Relevant bibliographies by topics / Intrusión marina

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Academic literature on the topic 'Intrusión marina'

Author: Grafiati
Published: 4 June 2021
Last updated: 13 February 2022

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Journal articles on the topic "Intrusión marina"

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Sarango J., Douglas D. "ANALISIS DEL PROBLEMA DE INTRUSION MARINA DEL ACUIFERO DE CHILCA MEDIANTE MODELAMIENTO NUMERICO." Revista de Investigación de Física 9, no. 02 (December 29, 2006): 61–67. http://dx.doi.org/10.15381/rif.v9i02.8592.

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La presente investigación tiene como objetivo el análisis y la evaluación del problema actual de intrusión marina del acuífero de Chilca mediante la modelación númerica. Para cumplir con este objetivo es necesario contar con un manejo apropiado de este sistema acuífero y establecer politicas de operación, manejo y conservación, para lo cual se debe efectuar un estudio del comportamiento espacial y temporal de este recurso hídrico. En este sentido, se ha efectuado el modelamiento númerico del acuífero de Chilca en regimen permanente mediante la solución de las ecuaciones que gobiernan el flujo del agua subterránea en medios porosos, utilizandose para ello la técnica de elementos finitos con el uso de mallas triangulares desarrollado en el Modelo Micro-Fem V.3. Se genero 143 elementos triangulares y 100 nodos, asignando a cada elemento datos de piezometria, caudal de explotación, trasmisibilidad, etc. Con el modelo númerico calibrado se simulo las hipotesis de explotación futura plantedas por el sector agricultura, determinandose de esta forma la nueva posición del nivel del agua subterránea en el área del acuífero de Chilca. La ubicación de la interfase agua dulce – agua salada, que representa el problema de intrusión marina, fue determinada aplicando la condición de Ghyben-Herzberg a los resultados de los nuevos niveles del agua subterránea obtenidos al simular las hipotesis de explotación plantedas. Los resultados indican que en las zonas del valle de Chilca denominadas S2, S3, S4, S5 y S6 los pozos ubicados en ellas extraerian agua contaminada con alto contenido de cloruro de sodio. Mientras que la zona S1, solo podria ser explotada vía pozos para poder abastecer de agua potable a la ciudad de Chilca, ubicada a mitad del valle.
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Custodio, Emilio. "Consecuencias de la intrusión marina en la España mediterránea e insular según el informe SASMIE." BOLETÍN GEOLÓGICO Y MINERO 131, no. 4 (December 2020): 775–94. http://dx.doi.org/10.21701/bolgeomin.131.4.015.

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Nagaraju, Arveti, Arveti Thejaswi, and Yenamala Sreedhar. "Assessment of Groundwater Quality of Udayagiri area, Nellore District, Andhra Pradesh, South India Using Multivariate Statistical Techniques." Earth Sciences Research Journal 20, no. 4 (October 1, 2016): 1. http://dx.doi.org/10.15446/esrj.v20n4.54555.

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Hydrogeochemical studies were carried out in and around Udayagiri area of Andhra Pradesh in order to assess the chemistry of the groundwater and to identify the dominant hydrogeochemical processes and mechanisms responsible for the evolution of the chemical composition of the groundwater. Descriptive statistics, correlation matrices, principal component analysis (PCA), together with cluster analysis (CA) were used to gain an understanding of the hydrogeochemical processes in the study area. PCA has identified 4 main processes influencing the groundwater chemistry viz., mineral precipitation and dissolution, seawater intrusion, cation exchange, and carbonate balance. Further, three clusters C1, C2 and C3 were obtained. Samples from C1 contain high level of Cl− and may be due to the intensive evaporation and contamination from landfill leachate. Most of the samples from C2 are located closer to the sea and the high level of Na+ +K+ in these samples may be attributed to seawater intrusion. The geochemistry of water samples in C3 are more likely to originate from rock weathering. This has been supported by Gibbs diagram. The groundwater geochemistry in the study area is mostly of natural origin, but is influenced to some degree by human activity. Evaluación de la calidad del agua subterránea a través de técnicas estadísticas multivariadas en el área Udayagiri, distrito Nellore, Andhra Pradesh, en el sur de IndiaResumenSe realizaron estudios hidrogeoquímicos en y alrededor del área Udayagiri de Andhra Pradesh para evaluar la química del agua subterránea e identificar los procesos hidrogeoquímicos dominantes y los mecanismos responsables de la evolución en la composición química del agua subterránea. Se utilizaron estadísticas descriptivas, matrices de correlación, análisis de componentes principales, al igual que análisis de grupos, para obtener y entender los procesos hidrogeoquímicos en el área de estudio. Los análisis de componentes principales identificaron cuatro procesos determinantes que influenciaron la química del agua subterránea, estos son, la precipitación y disolución de minerales, l intrusión de agua marina, el intercambio de cationes y el equilibrio de carbonatos. De esta forma se obtuvieron tres grupos, C1, C2, y C3. Las muestras del grupo C1 contienen un alto nivel de Cl- , lo que podría deberse a la intensa evaporación y contaminación de los lixiviados de rellenos sanitarios. Muchas de las muestras del grupo C2 se ubican cerca del mar y el alto nivel de Na++K+ podría atriburise a la intrusión de agua marina. La geoquímica de las muestras de agua en el grupo C3 probablemente se desprende de la meteorización de rocas. El diagrama de Gibbs valida estos resultados. La geoquímica del agua subterránea en el área de estudio es principalmente de origen natural pero también está influenciado por la actividad humana en algún grado.
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Pino, Edwin, Lía Ramos, Oscar Avalos, Príncipe Tacora, Eduardo Chávarri, Oscar Angulo, David Ascensios, and Jesús Mejía. "Factores que inciden en el agotamiento y la contaminación por intrusión marina en el acuífero costero de La Yarada, Tacna, Perú." Tecnología y ciencias del agua 10, no. 5 (September 1, 2019): 177–213. http://dx.doi.org/10.24850/j-tyca-2019-05-07.

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Purca, Sara, and Aida Henostroza. "Presencia de microplásticos en cuatro playas arenosas de Perú." Revista Peruana de Biología 24, no. 1 (April 21, 2017): 101. http://dx.doi.org/10.15381/rpb.v24i1.12724.

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Se presenta el número y peso por metro cuadrado de fragmentos de microplásticos presentes en cuatro playas arenosas de la costa peruana. Las muestras fueron colectadas entre junio de 2014 y mayo 2015. Fragmentos de plástico duro mayores a 1 mm fueron encontrados en más del 80% de las muestras de las cuatro playas. La playa Costa Azul (~ 12°S) presentó 522 fragmentos por metro cuadrado (items/m2) de microplásticos, de los cuales, 463.33 items/m2 y 2.6 g/m2 fueron plásticos duros. La playa Albúfera de Medio Mundo (~ 11°S) presentó el menor número y peso de microplásticos (4.67 items/m2 y 0.50 g/m2). Una muestra aleatoria de la playa Costa Azul fue analizada por el espectroscopio FT-IR. Se encontró 5 fragmentos con poliuretano (PE), dos fragmentos con polipropileno (PP) y un fragmento con estireno (EPS). Pocos estudios mencionan al plástico duro como la mayor fracción de los microplásticos, se sugiere nuevas fuentes de intrusión y vías de microbasura en los hábitas, los cuales podrían estar afectando desde la base de trama trófica marina en el Perú.
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De Bustamante, Irene, Marco Cabrera, Lucila Candela, and Javier Lillo. "La reutilización de aguas regeneradas en España: ejemplos de aplicación en el marco del Proyecto Consolider-Tragua." Aqua-LAC 2, no. 1 (March 31, 2010): 01–17. http://dx.doi.org/10.29104/phi-aqualac/2010-v2-1-01.

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La reutilización de aguas depuradas en España se realiza desde hace décadas, siendo uno de los países en los que esta práctica está más extendida. Sin embargo, no se llega a reutilizar más del 5% del total de las aguas residuales recogidas, aunque en algunos casos, como en Canarias, el agua depurada ha llegado a suponer un 20% del agua consumida. En este artículo se presentan tres ejemplos de reutilización de aguas depuradas con una importante incidencia en los aspectos ambientales y asociados a condiciones hídricas diversas. Los estudios se están llevando a cabo dentro del Proyecto CONSOLIDER-TRAGUA cuyo objetivo es abordar de manera integrada los aspectos implicados en la reutilización de aguas residuales procedentes de las estaciones depuradoras de aguas residuales urbanas. Las zonas seleccionadas para los estudios de campo se sitúan en Andalucía donde el agua regenerada se aplica a filtros verdes y riego de cultivos para la obtención de biodiesel; Canarias para riego de campos de Golf y Cataluña donde el agua es inyectada para generar una barrera hidráulica contra la intrusión marina del acuífero. En los tres casos estudiados se incide en los aspectos suelo-agua-planta y sus impactos en el medio.
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Rojas Gonzáles, E., H. Herrera Pamo, and Douglas D. Sarango. "Desarrollo e implementación de un modelo matemático para la evaluación del impacto ambiental de la intrusión marina en el acuífero del rio Caplina, Tacna Perú." Revista de Investigación de Física 13, no. 01 (July 15, 2010): 1–9. http://dx.doi.org/10.15381/rif.v13i01.8922.

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La sobreexplotación de los acuíferos costeros de nuestro país para el abastecimiento de la demanda de agua para uso doméstico y agrícola ha producido en los últimos años un incremento del problema de la intrusión marina en estos acuíferos. Una forma de diagnosticar y diseñar la solución a este problema, es la modelación matemática en régimen transitorio; que consiste en la solución numérica de las ecuaciones que gobiernan el flujo de agua en un acuífero del rio Caplina en Tacna-Perú. En la etapa de calibración mensual del modelo, se logró reproducir el comportamiento del acuífero para el año 2000 con un 95% de aproximación; es decir un 5% de error entre las piezometrías históricas y las piezometrías obtenidas por el modelo desarrollado. Considerando el futuro incrementado del área agrícola para el periodo 2000-2004, se simularon dos caudales de explotación, que dan una nueva posición de la interface agua dulce-agua salada. Al simularse con el primer caudal de explotación, los resultados indican que no representa un peligro para la zona del litoral del valle del Caplina, mientras que al simularse con el segundo caudal de explotación los resultados indican que está en peligro la reserva de agua del acuífero.
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Delgado, Valeria, Heyddy Calderón, Yelba Flores, and Thelma Salvatierra. "Calidad y Disponibilidad de los Recursos Hídricos en tres Microcuencuas Costeras del Municipio de Tola, Nicaragua." Universidad y Ciencia 5, no. 8 (May 23, 2011): 13–21. http://dx.doi.org/10.5377/uyc.v5i8.314.

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Las actividades económicas, el crecimiento de la población en general; así como los cambios climáticos globales, han aumentado la presión sobre los recursos hídricos en el país. Esto se refleja tanto en una disminución en la disponibilidad, así como en la pérdida de calidad de estos recursos. En consecuencia, los gobiernos municipales han formado alianzas estratégicas con organismos internacionales e instituciones académicas para producir información base necesaria para la creación y ejecución de planes de ordenamiento territorial, a fin de planificar futuras demandas de agua. El desarrollo turístico en la franja costera del Municipio de Tola ha generado cambios en el uso del suelo, desprotección de las zonas de recarga de los acuíferos, posible riesgo de intrusión marina por el bombeo excesivo en la zona costera, y ha creado problemas con la disposición de residuos sólidos. Los resultados indican que hay disponibilidad de agua, tanto superficial como subterránea en las tres microcuencas costeras estudiadas; sin embargo su calidad se ha afectado por la presencia de heces fecales en las aguas de los pozos y por residuos de carbamatos en los ríos. El Índice Biótico de Familias de Hilsenhoff arrojó que el agua es relativamente mala en la parte alta y media de las 3 microcuencas. Fue identificada una especie nueva para el Pacífico Sur de Nicaragua (Theodoxus sp.) y una reportada por primera vez en 1972 en San Juan del Sur (Trinectes fonsecensis). Aunque el agua está disponible en cantidad, su calidad restringe su uso para consumo humano; por lo que es necesario concientizar a la población del municipio en cuanto a la protección, limpieza y uso adecuado de los recursos hídricos.DOI: http://dx.doi.org/10.5377/uyc.v5i8.314Universidad y Ciencia No 8 Año 5 2010 13-21
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Gandhi, S. S., J. K. Mortensen, N. Prasad, and O. van Breemen. "Magmatic evolution of the southern Great Bear continental arc, northwestern Canadian Shield: geochronological constraints." Canadian Journal of Earth Sciences 38, no. 5 (May 1, 2001): 767–85. http://dx.doi.org/10.1139/e00-094.

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The calc-alkaline Great Bear continental arc in the Wopmay Orogen developed after a collision ca. 1890 Ma of the Archean Slave craton with the Paleoproterozoic Hottah terrane to the west. U–Pb zircon dating of three volcanic and six intrusive rocks from the southern part of the arc shows four stages of development: (i) intrusion of a few small sodic leucogranite plutons at 1873 ± 2 Ma into a previously folded metasedimentary sequence; (ii) abundant calc-alkaline felsic volcanism and subvolcanic intrusions during the period 1870–1866 Ma, bracketed by five ages; (iii) intrusion of large calc-alkaline granitic plutons, including the Marian River batholith, dated by zircon and titanite from two samples at 1866 +2–3 Ma; and (iv) emplacement of the potassic Faber Lake rapakivi granite at 1856 +2–3 Ma. The arc was developed on the Hottah terrane due to easterly subduction of an oceanic plate under the amalgamated Slave craton – Hottah terrane. The oldest exposed rocks in the southern part of the arc are remnants of a Paleoproterozoic platformal sequence. They were regarded previously as equivalents of the initial passive margin sequence on the Slave craton, but are interpreted here as part of the Hottah terrane. The ages reported here are comparable with earlier data from the northern part of the arc, which show an age range from 1875 to 1840 Ma and also identify two suites of compositionally and temporally distinct granites. The age constraints show that the Great Bear arc evolved rapidly in time from sodic through calc-alkaline, and then, with a pause, to potassic composition.
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Passow, Uta, and Edward B. Overton. "The Complexity of Spills: The Fate of the Deepwater Horizon Oil." Annual Review of Marine Science 13, no. 1 (January 3, 2021): 109–36. http://dx.doi.org/10.1146/annurev-marine-032320-095153.

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The Deepwater Horizon oil spill was the largest, longest-lasting, and deepest oil accident to date in US waters. As oil and natural gas jetted from release points at 1,500-m depth in the northern Gulf of Mexico, entrainment of the surrounding ocean water into a buoyant plume, rich in soluble hydrocarbons and dispersed microdroplets of oil, created a deep (1,000-m) intrusion layer. Larger droplets of liquid oil rose to the surface, forming a slick of mostly insoluble, hydrocarbon-type compounds. A variety of physical, chemical, and biological mechanisms helped to transform, remove, and redisperse the oil and gas that was released. Biodegradation removed up to 60% of the oil in the intrusion layer but was less efficient in the surface slick, due to nutrient limitation. Photochemical processes altered up to 50% (by mass) of the floating oil. The surface oil expression changed daily due to wind and currents, whereas the intrusion layer flowed southwestward. A portion of the weathered surface oil stranded along shorelines. Oil from both surface and intrusion layers were deposited onto the seafloor via sinking marine oil snow. The biodegradation rates of stranded or sedimented oil were low, with resuspension and redistribution transiently increasing biodegradation. The subsequent research efforts increased our understanding of the fate of spilled oil immensely, with novel insights focusing on the importance of photooxidation, the microbial communities driving biodegradation, and the formation of marine oil snow that transports oil to the seafloor.
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Dissertations / Theses on the topic "Intrusión marina"

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Zúñiga, Calderón María José, and Infante Abdul Galvez. "Modelamiento y evaluación de la intrusión marina en el acuífero Chilca, Lima." Bachelor's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2019. http://hdl.handle.net/10757/628080.

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La demanda de agua en Chilca ha aumentado considerablemente en la última década, debido al aumento de la población y el desarrollo económico en la zona, y a la falta de recursos hídricos disponibles en la cuenca. Esta situación ha incrementado la sobre explotación de los recursos hídricos subterráneos. Estudios actuales revisados arrojaron evidencias de la contaminación del agua extraída. Por lo tanto, esta investigación plantea determinar el grado de extensión de la intrusión marina en la zona costera de Chilca, Lima. Para tal efecto, se modela numéricamente el flujo del agua subterránea con MODFLOW, que incluyen parámetros hidrogeológicos e hidrodinámicos del acuífero. Asimismo, se representa la dinámica de la intrusión marina con el modelo numérico SEAWATER INTRUSION. Se utilizaron datos de cargas hidráulicas en una red de pozos desde el 2005 al 2014, los que se usaron para calibrar el modelo y realizar un análisis de sensibilidad. Con el modelo calibrado, se simuló la intrusión marina en 10, 20 y 40 años. Los resultados muestran que la extensión en longitud de la intrusión podría avanzar hasta 4350 m con respecto al litoral para el año 2057.
The water demand in Chilca has increased considerably in the last decade, due to the increase in population and economic development in the area, and the lack of available water resources in the basin. This situation has increased the overexploitation of groundwater resources. Current studies reviewed showed evidence of contamination of extracted water. Therefore, this research proposes to estimate the extent of the marine intrusion in the coastal zone of Chilca, Lima. For this purpose, first, the groundwater flow is represented using MODFLOW model, which include hydrogeological and hydrodynamic parameters of the aquifer. Second, the dynamics of the marine intrusion is represented with the numerical model SEAWATER INTRUSION. Hydraulics heads from 2005 to 2014 were used from a network wells, which were used to calibrate the model and perform a sensitivity analysis. With the calibrated model, the marine intrusion was simulated in 10, 20 and 40 year-periods. The results show that the extension in terms of length of the intrusion could advance up to 4350 m from the coast line by the year 2057.
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Núñez, Lafitte Manuel. "Escenarios relacionados con la intrusión marina. Caso de estudio Cuenca Artemisa – Quivicán, Provincia Habana. La Habana – Cuba." Pontificia Universidad Católica del Perú. Centro de Investigación en Geografía Aplicada, 2013. http://repositorio.pucp.edu.pe/index/handle/123456789/119470.

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Sea water intrusion is the process by which the sea water in an aquifer displaces the sweet water as consequence of a sensitive reduction of the hydraulic head, either for natural actions or for anthropic activity Sea water intrusion takes place in the coastal aquifers mainly independently to the predominant lithology. In this work the scenario analysis is approached by studying the effects that sea water intrusion in dry years would produce to the supply of underground water to the City of Havana and Havana Province, when there would be high exploitation of the aquifers without maintenance of recharge works such as in South Dike.There would be a cartography of the scenario in danger to show the presage of the penetration expressed in the longitude of the marine intrusion wedge, taking as contour conditions the variable that may be unfavorable for their temporal variation, such as precipitation and depression. The thickness of the sheet of sweet water is considered constant.
La intrusión marina es el proceso por el cual el agua de mar desplaza en un acuífero el agua dulce como consecuencia de una reducción sensible de la carga hidráulica, ya sea por acciones naturales o por actividad antrópica.La intrusión marina tiene lugar principalmente en los acuíferos costeros independientemente a la litología predominante.En este trabajo se aborda el análisis del escenario que en el abasto de agua subterránea a la Ciudad de La Habana y Provincia Habana produciría la intrusión marina durante la ocurrencias de años secos, simultaneados, con altas explotaciones del acuífero y el no mantenimiento de obras de recarga como es el caso del Dique Sur.Se cartografía el escenario de peligro que muestra el pronóstico de la penetración expresada en longitud de la cuña de intrusión marina tomando como condiciones de contorno las variables que pueden ser desfavorables por su variación temporal, tales como la precipitación, explotación y abatimiento. Se considera constante el espesor de la lámina de agua dulce.
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Abarca, Cameo Elena. "Seawater intrusion in complex geological environments." Doctoral thesis, Universitat Politècnica de Catalunya, 2006. http://hdl.handle.net/10803/6243.

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Modelling seawater intrusion (SWI) has evolved from a tool for understanding to a water management need. Yet, it remains a challenge. Difficulties arise from the assessment of dispersion coefficients and the complexity of natural systems that results in complicated aquifer geometries and heterogeneity in the hydraulic parameters. Addressing such difficulties is the objective of this thesis. Specifically, factors that may affect the flow and transport in coastal aquifers and produce heterogeneous salinity distributions are studied.

First, a new paradigm for seawater intrusion is proposed since the current paradigm (the Henry problem) fails to properly reproduce observed SWI wedges. Mixing is represented by means of a velocity dependent dispersion tensor in the new proposed problem. Thereby, we denote it as "dispersive Henry problem". SWI is characterized in terms of the wedge penetration, width of the mixing zone and influx of seawater. We find that the width of the mixing zone depends basically on dispersion, with longitudinal and transverse dispersion controlling different parts of the mixing zone but displaying similar overall effects. The wedge penetration is mainly controlled by the horizontal permeability and by the geometric mean of the dispersivities. Transverse dispersivity and the geometric mean of the hydraulic conductivity are the leading parameters controlling the amount of salt that enters the aquifer.

Second, the effect of heterogeneity was studied by incorporating heterogeneity in the hydraulic permeability into the modified Henry problem. Results show that heterogeneity causes the toe to recede while increases both the width and slope of the mixing zone. The shape of the interface and the saltwater flux depends on the distribution of the permeability in each realization. However, the toe penetration and the width of the mixing zone do not show large fluctuations. Both variables are satisfactorily reproduced, in cases of moderate heterogeneity, by homogeneous media with equivalent permeability and either local or effective dispersivities.

Third, the effect of aquifer geometry in horizontally large confined aquifers was analyzed. Lateral slope turned out to be a critical factor. Lateral slopes in the seaside boundary of more than 3% cause the development of horizontal convection cells. The deepest zones act as preferential zones for seawater to enter the aquifer and preferential discharging zones are developed in the upwards lateral margins. A dimensionless number, Nby, has been defined to estimate the relative importance of this effect.

All these factors can be determinant to explain the evolution of salinity in aquifers such as the Main aquifer of the Llobregat delta. Finally, a management model of this aquifer is developed to optimally design corrective measures to restore the water quality of the aquifer. The application of two different optimization methodologies, a linear and a non-linear optimization method, allowed (1) to quantify the hydraulic efficiency of two potential corrective measures: two recharge ponds and a seawater intrusion barrier; (2) to determine the water necessary to be injected in each of these measures to restore the water quality of the aquifer while minimizing changes in the pumping regime and (3) to assess the sustainable pumping regime (with and without the implementation of additional measures) once the water quality has been restored. Shadow prices obtained from linear programming become a valuable tool to quantify the hydraulic efficiency of potential corrective measures to restore water quality in the aquifer.
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García, Menéndez Olga. "Evaluación multiparamétrica de un esquema MAR (Managed Aquifer Recharge) en un acuífero costero salinizado (Plana de Castellón, España)." Doctoral thesis, Universitat Jaume I, 2018. http://hdl.handle.net/10803/620641.

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En el acuífero de la Plana de Castellón (área de La Rambleta) se ha implantado, como medida de lucha contra la intrusión marina, una actuación de recarga artificial de acuíferos. La caracterización de los efectos y de los procesos que tienen lugar en el acuífero como consecuencia de la recarga artificial se ha realizado con la utilización conjunta de técnicas hidrogeoquímicas y geofísicas. Las velocidades de flujo se han calculado a partir de las variaciones de la CE, de los cloruros y nitratos, y de los isótopos estables del agua. Los procesos hidrogeoquímicos se han identificado y cuantificado a partir de las concentraciones de los iones mayoritarios y sus deltas iónicos. La distribución del agua de recarga en el acuífero se ha estudiado a partir de tomografías de resistividad eléctrica (ERT), obteniéndose una triple relación entre valores de ER, litología de los sedimentos y CE del agua subterránea.
A managed aquifer recharge (MAR) has been implemented as a measure to face marine intrusion in the southern half of the Plana de Castellón aquifer (​​Rambleta area). The characterization of the effects and processes that occur in the aquifer as a consequence of artificial recharge has been carried out from the combination of hydrochemical and geophysical techniques. The flow rates have been calculated from the variations of the EC, chlorides and nitrates, and stable isotopes of water. The hydrogeochemical processes have been identified and quantified from the concentrations of the major ions and their ionic deltas. The distribution of recharge water in the aquifer has been studied from electrical resistivity tomography (ERT), obtaining a triple relationship between ER values, sediment lithology and groundwater EC. This multiparametric treatment has allowed to define the shape and extension of the recharge plume.
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Renau, Pruñonosa Arianna. "Nueva herramienta para la gestión de las aguas subterráneas en acuíferos costeros. Volumen ecológico de remediación (VER). Metodología y aplicación a la Plana de Oropesa-Torreblanca (MASub 080.110)." Doctoral thesis, Universitat Jaume I, 2013. http://hdl.handle.net/10803/110878.

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Los acuíferos costeros mediterráneos, en su mayoría, presentan un grado de explotación muy elevado, que ha dado lugar a la presencia de procesos de salinización por intrusión marina. Si bien el proceso de intrusión marina puede ser hidrodinámicamente muy complejo, puede asumirse que debe existir relación directa entre los caudales de descarga subterránea al mar y la intrusión marina.

En los últimos años, propiciado por la entrada en vigor de la Directiva Marco del Agua (UE-DMA, 2000; UE-DMA,2006), están proliferando los estudios referidos a la gestión y uso sostenible de las aguas subterráneas (IGME - UJI, 2009b; Gómez et al., 2012; Meléndez et al., 2012). Dichos informes tienden a definir y cuantificar las salidas subterráneas al mar de los acuíferos costeros y presentan propuestas metodológicas interesantes para su determinación. Pero es sabido que el caudal subterráneo de salida al mar es el resultado de todas las acciones llevadas a cabo en un acuífero; por tanto, la contención de la intrusión marina no debería centrarse exclusivamente en determinar el caudal de salida sino en cuantificar, y rectificar en la medida de lo posible, las acciones desencadenantes del problema. En esta tesis se propone una nueva metodología para determinar el volumen ecológico de remediación (VER), definido como el volumen en que hay que reducir los bombeos en un acuífero o sector del mismo para que la recuperación piezométrica alcanzada comporte una intrusión menor o igual a la estimada en régimen natural para el sistema (intrusión de referencia).

La metodología propuesta para el cálculo del VER parte de un modelo matemático de flujo de densidad constante calibrado en régimen estacionario. Consiste en reducir de forma iterativa los bombeos involucrados en el proceso de intrusión, hasta que la superficie piezométrica obtenida sea menor o igual a la intrusión estimada en régimen natural para el sistema (intrusión de referencia). Para su aplicación se propone seguir los siguientes pasos:

FASE 1: Simular la situación del sistema en régimen natural para conocer la intrusión de referencia. Al modelo resultante se le denominará modelo de referencia en régimen natural (modelo RN).
FASE 2: Delimitar las áreas afectadas por la intrusión marina e intentar disminuir su superficie mediante la reducción iterativa de los bombeos involucrados en el proceso, hasta que la superficie piezométrica obtenida presente una intrusión igual o menor a la estimada en régimen natural. El modelo de partida en esta fase se denominará modelo base en régimen influenciado (modelo RI).
FASE 3: Cálculo del VER a partir del modelo RI y del último escenario contemplado en la Fase 2 (el que se asocia a una intrusión igual o menor a la estimada en régimen natural)

El volumen ecológico de remediación (VER) se puede calcular para años húmedos (VERh), medios (VERm) y secos (VERs). La aplicación de esta metodología en la Plana de Oropesa – Torreblanca (MASub 080.110) pone de manifiesto que el avance en la intrusión marina (respecto a la existente en régimen natural), en cualquiera de los tres casos (año húmedo, medio o seco) es debida principalmente a la acción de los bombeos. En término medio, en los años húmedos el sector afectado por el avance de la intrusión es el Sur y el VERh correspondiente es de 1 hm3/año. En los años medios, el VERm es de 1,6 hm3/año y el proceso afecta únicamente al sector Sur. En los años secos el proceso afecta al sector Sur y al sector Central; en este caso el VERs sería de 2,8 y 0,9 hm3/año para cada sector respectivamente.

Previamente a la aplicación de la metodología propuesta a la Plana de Oropesa - Torreblanca (MASub 080.110), ha sido necesario profundizar en el conocimiento de las características del acuífero y su funcionamiento.

En cuanto a la intrusión marina de la Plana, la evolución del proceso y su situación actual se han estudiado a partir de la información recogida en las redes de control de intrusión y calidad de la Confederación Hidrográfica del Júcar (CHJ, www.chj.es). Se ha aplicado una metodología para valorar los impactos y la vulnerabilidad del sistema frente a la intrusión (índice SITE), concluyéndose que, a finales del siglo XX, el proceso afectaba a la totalidad del acuífero y la presión debida a la intrusión se clasifica como alta.

El desarrollo de un modelo matemático de flujo subterráneo (MODFLOW), para el periodo 1973 – 2009, ha permitido evaluar las acciones que afectan al sistema, calibrar los parámetros y acciones que lo conforman y observar la evolución de la piezometría a lo largo de la simulación. Al final del periodo considerado, año 2009, se estima que la intrusión, que durante el año 1993 llega a afectar a dos tercios de la franja costera con un caudal de entrada de 2,3 hm3/año, se concentra únicamente en el sector Sur y se cuantifica en 0,05 hm3/año.

Se ha simulado un escenario futuro plausible (2010 – 2035), definido a partir de las ordenaciones urbanísticas proyectadas a corto y medio plazo en la zona: el Plan General de Ordenación Urbana 2009 (PGOU Torreblanca, 2009) dentro del cual se desarrolla el Programa de Actuación Integrada (PAI) Doña Blanca Golf y el PAI Marina d´Or Golf (en los términos municipales de Cabanes y Oropesa). Esto ha permitido valorar el impacto de los cambios del uso del suelo en la piezometría de la zona, observándose que a partir del año 2018 los niveles piezométricos por debajo del nivel del mar son inexistentes.

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Renau, Llorens Elisa Alejandra. "Elementos minoritarios y traza en la masa de agua subterranea 080.021 (Plana de Castelló). Origen y procesos asociados." Doctoral thesis, Universitat Jaume I, 2010. http://hdl.handle.net/10803/80652.

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El acuifero costero de la Plana de Castelló presenta unas características hidrogeoquimicas de gran complejidad, como consecuencia de la de la superposición de procesos tanto naturales como antrópicos, como son la intrusión marina, la contaminación de origen agrícola e industrial y la descarga de aguas sulfatadas desde los acuíferos triásicos de borde. De ellos, el que condiciona en mayor grado las características físico-químicas del agua subterranea es, sin duda, la intrusión marina, que es notable en la mitad meridional y en el extremo septentrional de la Plana.

El más relevante proceso modificador asociado a la mezcla de agua dulce y agua salada es el intercambio iónico, que afecta principalmente al calcio y al sodio, y no tanto al magnesio, cuya aparente ganancia está relacionada con aportes de agua de recarga lateral subterranea desde los acuiferos triásicos de la Serra d'Espadà este mismo mecanismo es el responsable del aumento de sulfatos que se acompaña de aportes de litio, estroncio y boro. Las mayores concentraciones se encuentran en los alrededores de la población de Xilxes, donde parecen existir flujos locales intensos, probablemente asociados a altos estructurales del sustrato triásico.

Se ha detectado la presencia de elementos minoritarios y traza en concentraciones apreciables. Estos elementos son boro, estroncio, litio, manganeso, hierro, bario,arsénico, selenio, vanadio, flúor, mercurio y cromo. Algunos de estos elementos tienen clara procedencia geoquímica pero otros pueden estar asociados a procesos contaminantes.

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Overton, Keith B. "Salt Water Intrusion in Cape Coral, Florida 1980-1999." NSUWorks, 2000. http://nsuworks.nova.edu/occ_stuetd/311.

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The purpose of this study was to determine the change in water surface elevation and chloride concentration in the surficial, Mid Hawthorn, and Lower Hawthorn aquifers in the Cape Coral peninsula between 1980 and 1999. Seawater intrusion is a major concern in the Cape Coral area because the city is surrounded by open bodies of saline or brackish waters: Matlacha Pass to the west, San Carlos Bay to the south and Caloosahatchee River to the east. Prior to 1980, the principal groundwater withdrawals were from the Mid Hawthorn aquifer, with some smaller withdrawals from the surficial and Lower Hawthorn aquifers. Since 1980, many wells in the City of Cape Coral have been plugged and capped, decreasing the movement of water between the aquifers. In addition, withdrawals have primarily shifted to the Lower Hawthorn, which is now the principal water supply for the City of Cape Coral. Between 1980 and 1999 the water surface elevation in the surficial aquifer has remained relatively stable and chloride concentrations have decreased. During the same period, chloride concentrations have remained stable within the Mid Hawthorn aquifer. However, the potentiometric surface of the Mid and Lower Hawthorn has decreased and the chloride concentrations in the Lower Hawthorn in the vicinity of the City's wellfield have increased as a direct result of increased withdrawals. In addition, the area of highest chloride concentration within the City has moved west from its historic location, toward the City's reverse osmosis plant. The facility is roughly at the center of the wellfield that supplies water to the plant from the Lower Hawthorn. The potentiometric surface of the Mid Hawthorn has also decreased in the outlying areas of the Cape, mostly to the south and east, due to downward seepage into the Lower Hawthorn and well field pumping to the south in Ft. Myers, and east of Cape Coral along US 41.
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McKay, Thomas Duncan. "Diagnostic indicators for shipboard mechanical systems using non-intrusive load monitoring." Thesis, Monterey, California. Naval Postgraduate School, 2006. http://hdl.handle.net/10945/2344.

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CIVINS
This thesis examines the use of Non-intrusive Load Monitoring (NILM) in auxiliary shipboard systems, such as a low pressure air system, to determine the state of equipment in larger connected systems, such as the main propulsion engines. Using data collected on previously installed NILM's at the Naval Surface Warfare Center, Philadelphia DDG-51 Land Based Engineering Site (LBES), major event changes were analyzed and diagnosed using power data collected from the in-service low pressure air compressor (LPAC) and the in-service fuel oil pump. Events investigated include main propulsion engine starts and loadings, gas turbine generators starts, major electrical load shifts, and leak insertions into the low pressure air system. An additional NILM was installed on the General Electric LM2500 Universal Engine Controller (UEC) in order to assist in the diagnosis of various state changes. The UEC provides the appropriate interfaces to monitor and control each LM2500 GTM. The UEC controls the application of starter air, ignition power, and fuel to the engine while also receiving feedback of engine parameters from sensors on the engine. Using the combined data received by the LPAC, fuel oil pump, and UEC, a diagnosis system is derived that can detect major events in the engineering plant described above.
CIVINS
US Navy (USN) author
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Gámez, Torrent Desiré. "Sequence Stratigraphy as a tool for water resources management in alluvial coastal aquifers: application to the Llobregat delta (Barcelona, Spain)." Doctoral thesis, Universitat Politècnica de Catalunya, 2007. http://hdl.handle.net/10803/6255.

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Most coastal aquifers undergo seawater intrusion. Mitigating this risk depends on a sound knowledge of flow mechanisms, well located and constructed wells, an effective management, suitable policies and the desire to conserve the aquifer. To this end, a comprehensive geological model is essential. The single most important question that the geological model should address is the degree and nature of the connection of the aquifer to the sea. Differences in the connection explain why apparently similar coastal aquifers display very different salinitzation behavior. Some aquifers salinize with moderate pumping (eg. Tordera and Llobregat deltas) whereas others sustain large extractions with lower vulnerability to seawater intrusion (eg. Ter delta). However, the characterization of such a connection is not easy given the lack of onshore-offshore geological mapping potential pathways for seawater contamination.
This thesis is focused on sequence stratigraphy, which is necessary to understand the onshore-offshore aquifer connection, thus modifying the classical hydrogeological conceptual models. The methodology of sequence stratigraphy offers a perspective of delta architecture based on geological controls and processes. Sequence stratigraphic concepts are used in Western Mediterranean deltas in addition to local factors, such as subsidence, uplift and the rate of sediment supply to account for differences in Pleistocene stratigraphic patterns and aquifer preservation. These local factors exert an influence over the shape, slope and thickness of aquifers. Together with the width of the continental shelf, the presence of submarine canyons, faults and thin prodelta layers conditions vulnerability to seawater intrusion.
The Quaternary Mediterranean shelf is characterized by high-frequency depositional sequences mainly composed of large-scale regressive wedges with poor or poorly preserved transgressive to highstand intervals. Although the Llobregat delta is an anomaly, it serves as a paradigm of deltaic architecture because of its well preserved transgressive and highstand intervals. The well preserved coarse transgressive deposits are important from hydrogeological point of view. They act as aquifers with high lateral continuity from onshore to offshore providing paths for seawater intrusion.
The excellent preservation in the Llobregat delta may be a consequence of Quaternary growth faults, which caused high accommodation space, limiting the action of wave and storm events. The identification of different seismic units and deformation features along the coast makes it possible to distinguish two main morpho-structural sectors. These sectors can be influenced by tectonic movements, which may be intensified by sediment supply changes.
Detailed sedimentological, age and paleontological (foraminifera and ostracods) data display a cyclic vertical pattern of facies, including a high degree of reworked sediments. Available ages together with high sediment preservation due to constant subsidence and sediment supply during sea level rises allow us to establish a chronostratigraphic framework. The most significant and widespread erosion were interpreted as occurring during gradual sea-level falls with a frequency of 100 Kyr. glacial-interglacial cycles. However, most of the regressive deposits display complex internal architectures, which suggest the imprint of higher-frequency cycles.
The stacking pattern of the modern Holocene delta is controlled by changes in the relative sea-level and in the sediment supply. Paleofloods frequencies controlled by climatic changes and intensified by anthropic activity caused an important progradational pulses in the Llobregat delta and the channel switching with the rapid abandonment of the delta lobes.
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Gatti, Julie. "Intrusions du courant Nord méditerranéen sur la partie Est du plateau continental du Golfe du Lion." Aix-Marseille 2, 2008. http://theses.univ-amu.fr.lama.univ-amu.fr/2008AIX22095.pdf.

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Le Courant Nord Méditerranéen est la branche nord de la circulation cyclonique en Méditerranée occidentale. Il longe le talus continental d’est en ouest de sa zone de formation, la mer Ligure, jusqu’en mer catalane en passant au large du Golfe du Lion. Des intrusions du Courant Nord ont été observées, occasionnellement, à plusieurs endroits du plateau continental du Golfe du Lion. Les objectifs de cette thèse sont alors de décrire et caractériser les intrusions sur la partie est du plateau, ainsi que d’identifier leurs processus de génération, au moyen de mesures in situ et, conjointement, de la modélisation numérique. [. . . ]
The Mediterranean Northern Current (NC) is the northern branch of the general cyclonic circulation in the western Mediterranean basin. The NC flows southwestward along the Gulf of Lion (GoL) continental slope, from the Ligurian Sea to the Catalan Sea, and sometimes intrudes on the continental shelf. This PhD work focuses on describing and caracterizing the NC’s intrusions on the eastern part of the shelf, and identifying their generating processes, through both in situ measurements and numerical modelling. [. . . ]
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Books on the topic "Intrusión marina"

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Edwards, B. D. Saltwater intrusion in Los Angeles area coastal aquifers: The marine connection. [Reston, Va.]: U.S. Dept. of the Interior, U.S. Geological Survey, 2002.

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Evangelista, Ignacio Morell. Salinización por intrusión marina: Aspectos teóricos y metodológicos : aplicación a los acuíferos costeros de la Provincia de Castellón. Castelló: Diputació de Castelló, 1989.

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Boutin, Aimée. Aural Flânerie. University of Illinois Press, 2017. http://dx.doi.org/10.5406/illinois/9780252039218.003.0002.

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This chapter establishes that scholarly approaches to flâneurs have downplayed the broader impact of the urban experience on the senses and underappreciated their aural acuity. From the type's early formulations by Honoré de Balzac, Auguste de Lacroix, and Victor Fournel, the flâneur is attuned to city sounds, and flâneur-writing arranges them to portray the city as concert. The art of flânerie consists of transforming the empirical confusion of city sounds into a unified musical composition. As the clamor of the streets promoted selective hearing, street musicians were targeted as major contributors to the city as concert. Close readings of verbal and visual sketches by Delphine de Girardin, Maria d'Anspach, Bertall, and Old Nick show that class-biased ideas about concert music influenced their often humorous reactions to street noise; nevertheless, the neurasthenic bourgeois ear was often less than receptive to the intrusive noise of foreign street performers. In contrast, Victor Fournel waxed enthusiastic about the people's love of music. A close reading of his Ce qu'on voit dans les rues de Paris makes sense of his distinctive appreciation for street music.
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Book chapters on the topic "Intrusión marina"

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Taylor, Rex N., Michael S. Marlow, Lynn E. Johnson, Brian Taylor, Sherman H. Bloomer, and John G. Mitchell. "Intrusive volcanic rocks in western Pacific forearcs." In Active Margins and Marginal Basins of the Western Pacific, 31–43. Washington, D. C.: American Geophysical Union, 1995. http://dx.doi.org/10.1029/gm088p0031.

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Delgado-Garcia, J., and M. Chica-Olmo. "Non Linear Approach to the Marine Intrusion Process Modelling." In Quantitative Geology and Geostatistics, 685–94. Dordrecht: Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-1739-5_54.

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Schmidt, Sabine. "A 14-Year Multi-sites and High-Frequency Monitoring of Salinity in the Tidal Garonne River (S-W France) Reveals Marked Inter-annual Variability in Marine Intrusion." In Springer Water, 3–11. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-2081-5_1.

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Migon, Piotr. "Geological Controls in the Evolution of Granite Areas." In Granite Landscapes of the World. Oxford University Press, 2006. http://dx.doi.org/10.1093/oso/9780199273683.003.0016.

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The preceding chapters have already indicated that granite properties and structures play a key role in the progress of rock weathering, the development of many medium and small-scale landforms, and in the patterns of mass movement phenomena on slopes. But the influence of geological factors sensu lato is by no means limited to these, rather restricted spatial scales. Geotectonic settings, modes of emplacement, and long-term geological histories are all relevant to the understanding of the diversity of granite landforms and landscapes. The aim of this section is show the variety of geological controls and how they are reflected in granite landscapes, moving progressively from large to small spatial scales. If plate tectonics is used as a framework, then granite intrusions form in two major settings: orogenic, including transitional, and anorogenic (see Chapter 2). Geographically, the former take place at convergent plate margins, whereas the latter take place at divergent plate margins (rift zones) and within continental interiors, at hot spots. However, for the purpose of a geomorphological approach to granite landscapes of the world, the time-independent plate tectonics framework is less useful. This is because many granite intrusions occur in settings different than those in which they formed millions of years ago, and it is their post-emplacement long-term geological history and current location that are crucial to understanding the landscapes that have developed upon them. For example, late Paleozoic granite intrusions in central and western Europe took place within the Hercynian orogenic belt, hence in a convergent plate margin setting, but their present-day morphology is mainly the legacy of long-term evolution in an anorogenic regime and late Cainozoic rejuvenation, including plateau uplift and faulting. In a somewhat similar manner, ancient orogenic granite intrusions have been incorporated into shield interiors and passive margins. Figure 8.1 is an attempt to relate the tectonic settings of granite intrusions to the distribution of granite areas, as we see them today, against the background of global tectonics. From this point of view, granite landscapes occur within the following five main geodynamic settings: (1) orogenic zones along convergent plate margins, (2) eroded and rejuvenated ancient orogenic belts, subject to geologically recent plateau uplift, (3) passive margins at divergent plate boundaries, (4) stable shield interiors, and (5) oceanic islands.
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Yincan et al, Ye. "Sea Level Change, Sea Water Intrusion, and Coastal Land Subsidence." In Marine Geo-Hazards in China, 587–656. Elsevier, 2017. http://dx.doi.org/10.1016/b978-0-12-812726-1.00014-0.

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Shimada, J., K. Kojima, K. Ohara, and M. Yamakawa. "Evaluation of seawater intrusion accompanying the coastal coalmine excavation in the Joban coalfield area, Japan." In Land and Marine Hydrogeology, 77–91. Elsevier, 2003. http://dx.doi.org/10.1016/b978-044451479-0/50018-2.

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Wei, Wu, Xia Ji-Hong, and Yan Zhong-Min. "2-D numerical simulation of saline intrusion in marine sewage outfalls." In Environmental Hydraulics and Sustainable Water Management, Two Volume Set, 461–66. CRC Press, 2004. http://dx.doi.org/10.1201/b16814-75.

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"Joint Effects of Marine Intrusion and Climate Change on the Mexican Avifauna." In Geography of Climate Change, 201–9. Routledge, 2013. http://dx.doi.org/10.4324/9780203723364-18.

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Goudouna, Sozita. "Investigating the Materiality of Respiration in Different Media." In Beckett's Breath. Edinburgh University Press, 2018. http://dx.doi.org/10.3366/edinburgh/9781474421645.003.0008.

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The chapter juxtaposes Beckett's Breath with breath-related artworks by prominent visual artists who investigate the far-reaching potential of the representation of respiration by challenging modernist essentialism. The chapter examines the pneumatic readymades by Duchamp, Beuys, Manzoni, Weseler, Navridis' Difficult Breaths, Gary Hill’s Circular Breathing, Kanarinka It Takes 154,000 Breaths to Evacuate Boston, Lygia Clark's Respire Comigo (Breathe with Me), John Latham’s The Big Breather Project, Gabriel Orozco’s Breath on Piano, Giuseppe Penone’s To Breathe The Shadow, Bill Viola’s Fire, Water, Breath, Marina Abramović’s (With Ulay) Breathing In Breathing Out, VALIE EXPORT’s Breath Text: Love Poem so as to investigate points of intersection (connections, linkages, overlaps) between different artistic media (intermediality) and aims to put on view breath’s intrusive actuality and immediacy into the field of representation, by means of an inquiry into the ways that these different aesthetic practices depict the human respiratory system, as the zone of evaporation that separates formlessness from form and life from inertness.
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Vélez, Karin. "Holy House Builders." In The Miraculous Flying House of Loreto, 117–52. Princeton University Press, 2018. http://dx.doi.org/10.23943/princeton/9780691174006.003.0005.

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This chapter first considers Bishop Casal's failed attempt to take a stone from the Holy House and its repercussions. It then surveys multiple iterations of the Holy House of Loreto that were built from blueprints distributed at the Loreto shrine in the seventeenth and early eighteenth centuries. It closes by honing in on the replicas of the Jesuits, especially a diverse string of Holy Houses left by one Jesuit, Juan Maria Salvatierra, across Mexico. Individually and as a group, holy house builders in Europe and on the American frontiers wavered between creating accurate, rooted copies that were thoughtfully integrated into their new surroundings, and making imperfect, drifting copies that were unmodified and intrusive to their new settings. This variety suggests that what mattered most in spreading the Loreto devotion was felt intent (mood) rather than following instructions (mind).
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Conference papers on the topic "Intrusión marina"

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Bhoyar, A., S. Sharma, S. Barve, and R. Kumar Rana. "Intelligent Control of Autonomous Vessels: Bayesian Estimation Instead of Statistical Learning?" In International Conference on Marine Engineering and Technology Oman. London: IMarEST, 2019. http://dx.doi.org/10.24868/icmet.oman.2019.008.

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Marine vessels have been recently considered for redesign with a view towards autonomous operation. This brings forth a number of safety concerns as regards malware attacks on intra-vehicle communications systems as well as on sensor based communication with their environment. Designing suitable hybrid systems or cyber physical systems as the above, which are data driven, involves a challenge by way of difficulty in abstraction. The current modeling paradigm for cyber physical systems is based upon the abstract idea of a hybrid automaton which involves discrete as well as continuous mathematical models for the physical device (marine vessel/s) Incorporating statistical inference techniques to introduce an element of autonomy in this has been recently proposed in literature. An engineering situation is explored in which a pair of marine vessels is being deployed to navigate avoiding collision with the help of deterministic control as well as with a particle filtering state estimator. A security intrusion is considered to occur in the communication channels and the robustness of the system is studied with the state estimation. Such intrusions can indeed be expected to defeat the collision protection design if sufficiently intense. However, better protection is offered by such Bayesian estimation based intelligent control as compare to statistical learning base control. Our results suggest that the hybrid automaton modeling paradigm with autonomy incorporated needs to be suitably abstracted in order to better design their defence against cyber-attacks.
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Vásconez-Maza, M. D., M. A. Martínez-Segura, and M. C. Garcîa-Nieto. "Geometrical Characterisation of a Marine Intrusion by Utilising Electrical Resistivity Tomography." In 25th European Meeting of Environmental and Engineering Geophysics. European Association of Geoscientists & Engineers, 2019. http://dx.doi.org/10.3997/2214-4609.201902413.

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Joung, Kyu-Kang, Suk-Chul Kang, Ki-Seok Paeng, No-Gill Park, Ho-Jin Choi, Young-Jun You, and Andy von Flotow. "Analysis of Vibration of the Turbine Blades Using Non-Intrusive Stress Measurement System." In ASME 2006 Power Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/power2006-88239.

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A Non-intrusive Stress Measurement (NSMS) was developed to measure coupled vibration on turbine blades. These systems can report the actual stresses seen on the blades; detect synchronous resonances that are the source of High Cycle Fatigue (HCF) in blades; measure individual blade mistuning and even help separate complicated, coupled resonances in bladed disks. Tests were successfully performed at high temperature and measured both tip timing and tip clearance of all blades. Non-Intrusive Stress Measurement Systems (NSMS) was used successfully in measuring bladed disk vibration, and was consistent over many runs. The SDOF curve fit and Circumferential Fourier fit were used to identify resonance amplitudes, resonance RPM and damping for all blades. The results of the two data-reduction methods matched well. Because tip deflection for every blade can be obtained with NSMS system, it might be possible to reduce the fatigue margin relative to the fatigue margin based upon strain gage data from a few blades.
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Shifler, David A., Dennis M. Russom, and Bruce E. Rodman. "Evaluation of Alternative High Temperature Coatings to Improve Hot Corrosion Resistance in a Shipboard Environment." In ASME Turbo Expo 2003, collocated with the 2003 International Joint Power Generation Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/gt2003-38332.

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501-K34 marine gas turbine engines serve as auxiliary power sources for the U.S. Navy’s DDG-51 Class. It is desired that 501-K34 marine gas turbine engines have a mean time between removal of 20K hours. While some engines have approached this goal, others have fallen significantly short. A primary reason for this shortfall is hot corrosion (Type I and Type II) damage in the turbine area (more specifically the first row turbine hardware) due to both intrusion of salts from the marine air and from sulfur in the gas turbine combustion fuels. In order to improve the durability of hot section components with more corrosion resistant coatings, low velocity, atmospheric-pressure burner-rig (LVBR) tests were conducted for up to 2000 hours to evaluate several alternative high-temperature coatings in both Type I and Type II hot corrosion environments. The objectives of this paper are to report the results of: (1) the hot corrosion performance of these alternative high temperature coating systems for the 1st stage vane of a given gas turbine engine; (2) compare the performance of these alternative coating systems to the current, baseline 1st stage vane coating and (3) downselect the best performing coating systems (in terms of their LVBR hot corrosion and thermal cycling resistance) to install as rainbow arrays into the first stage vanes of several engines for Fleet evaluation.
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A. Martin Sánchez, D., J. Diaz Curiel, A. Maldonado, and N. Caparrini. "Control network (/T for the investigation of the marine intrusion in Castell de Ferro (Granada, Spain)." In 4th EEGS Meeting. European Association of Geoscientists & Engineers, 1998. http://dx.doi.org/10.3997/2214-4609.201407089.

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Drake, Dillon, and Mark K. Reagan. "CONSTRAINTS ON MAGMA SERIES AND MELTING CONDITIONS FOR INTRUSIVE ROCKS FROM THE MARIANA FOREARC." In GSA 2020 Connects Online. Geological Society of America, 2020. http://dx.doi.org/10.1130/abs/2020am-356953.

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Shifler, David A., Dennis M. Russom, and Bruce E. Rodman. "Performance Evaluation of High Temperature Coatings for Hot Section Turbine Components." In ASME Turbo Expo 2005: Power for Land, Sea, and Air. ASMEDC, 2005. http://dx.doi.org/10.1115/gt2005-68975.

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Abstract:
501-K34 marine gas turbine engines serve as auxiliary power sources for the U.S. Navy’s DDG-51 Class ships. It is desired that 501-K34 marine gas turbine engines have a mean time between removal of 20K hours. While some engines have approached this goal, others have fallen significantly short. A primary reason for this shortfall is hot corrosion (Type I and Type II) damage in the hot section turbine area due to both intrusion of salts from the marine air and from sulfur in the gas turbine combustion fuels. Previous metallographic examination of several unfailed blades removed from a marine gas turbine engine after 18000 operating hours showed that the coating thickness under the platform and in the curved area of transition between the platform to the blade stem was either very thin, porous, and in a few cases, non-existent on each unfailed blade. Type II hot corrosion was evident at these locations under the platform. Corrosion fatigue cracks initiated at several hot corrosion sites and had advanced through the blade stems to varying degrees. Cracking in a few blades had advanced to the point that blade failure was imminent. The objectives of this paper are to: (1) report the hot corrosion results of alternative high temperature coating systems on Alloy M247 and Alloy 792 for hot section components of the 501-K34 gas turbine engine using a low velocity, atmospheric-pressure burner-rig (LVBR), (2) compare and rank hot corrosion performance of these coatings systems to the baseline coating/substrate system (2) down select the best performing coating systems (in terms of LVBR hot corrosion and thermal cycling resistance) to implement on future hot section components in the 501-K34 engine for the Fleet.
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McClay*, Kenneth R., and Nicola Scarselli. "Igneous Intrusions and Volcanic Complexes in the North West Shelf Passive Margin." In International Conference and Exhibition, Melbourne, Australia 13-16 September 2015. Society of Exploration Geophysicists and American Association of Petroleum Geologists, 2015. http://dx.doi.org/10.1190/ice2015-2209057.

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Çoban, K. H., A. E. Babacan, E. Durmaz, and S. Ceylan. "The Use of Slingram Method to Map the Marine Water Intrusion: A Case Study from the Trabzon, Turkey." In 23rd European Meeting of Environmental and Engineering Geophysics. Netherlands: EAGE Publications BV, 2017. http://dx.doi.org/10.3997/2214-4609.201701990.

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Smith, Lukas R., and Kyle R. Mayborn. "INVESTIGATION OF A MARGINAL REVERSAL AT THE BASE OF THE MINERAL LAKE INTRUSION, NORTHERN WISCONSIN." In 50th Annual GSA North-Central Section Meeting. Geological Society of America, 2016. http://dx.doi.org/10.1130/abs/2016nc-275256.

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Reports on the topic "Intrusión marina"

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Francis, D. The Marginal Rocks of the Muskox Intrusion. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1992. http://dx.doi.org/10.4095/133326.

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Francis, D. Chemical interaction between picritic magmas and upper crust along the margins of the Muskox intrusion, Northwest Territories. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1994. http://dx.doi.org/10.4095/194071.

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Hervet, M., O. van Breemen, and M. D. Higgins. U-Pb igneous crystallization ages of intrusive rocks near the southeastern margin of the Lac-St-Jean Anorthosite Complex, Grenville Province, Quebec. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1994. http://dx.doi.org/10.4095/195177.

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Nixon, G. T., J. S. Scoates, D. Milidragovic, J. Nott, N. Moerhuis, T J Ver Hoeve, M. J. Manor, and I M Kjarsgaard. Convergent margin Ni-Cu-PGE-Cr ore systems: U-Pb petrochronology and environments of Cu-PGE versus Cr-PGE mineralization in Alaskan-type intrusions. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2020. http://dx.doi.org/10.4095/326897.

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Jackson-Brown, S., J. S. Scoates, G. T. Nixon, and D. E. Ames. Geology, mineralogy, and geochemistry of the Cu-PGE (DJ/DB) zone of the Turnagain Alaskan-type intrusion, north-central British Columbia: Supporting databases for the convergent-margin Ni-Cu-PGE study. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2015. http://dx.doi.org/10.4095/297472.

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Delineation of saltwater intrusion in the surficial aquifer system in eastern Palm Beach, Martin, and St. Lucie counties, Florida, 1997-98. US Geological Survey, 1999. http://dx.doi.org/10.3133/wri994214.

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