Relevant bibliographies by topics / Volcanic ash soil

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Academic literature on the topic 'Volcanic ash soil'

Author: Grafiati
Published: 4 June 2021
Last updated: 5 February 2022

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Journal articles on the topic "Volcanic ash soil"

1

Fiantis, Dian, Frisa Ginting, Gusnidar, M. Nelson, and Budiman Minasny. "Volcanic Ash, Insecurity for the People but Securing Fertile Soil for the Future." Sustainability 11, no. 11 (May 31, 2019): 3072. http://dx.doi.org/10.3390/su11113072.

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Volcanic eruptions affect land and humans globally. When a volcano erupts, tons of volcanic ash materials are ejected to the atmosphere and deposited on land. The hazard posed by volcanic ash is not limited to the area in proximity to the volcano, but can also affect a vast area. Ashes ejected from volcano’s affect people’s daily life and disrupts agricultural activities and damages crops. However, the positive outcome of this natural event is that it secures fertile soil for the future. This paper examines volcanic ash (tephra) from a soil security view-point, mainly its capability. This paper reviews the positive aspects of volcanic ash, which has a high capability to supply nutrients to plant, and can also sequester a large amount of carbon out of the atmosphere. We report some studies around the world, which evaluated soil organic carbon (SOC) accumulation since volcanic eruptions. The mechanisms of SOC protection in volcanic ash soil include organo-metallic complexes, chemical protection, and physical protection. Two case studies of volcanic ash from Mt. Talang and Sinabung in Sumatra, Indonesia showed the rapid accumulation of SOC through lichens and vascular plants. Volcanic ash plays an important role in the global carbon cycle and ensures soil security in volcanic regions of the world in terms of boosting its capability. However, there is also a human dimension, which does not go well with volcanic ash. Volcanic ash can severely destroy agricultural areas and farmers’ livelihoods. Connectivity and codification needs to ensure farming in the area to take into account of risk and build appropriate adaptation and resilient strategy.
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2

Đorđević, Dragana, Sanja Sakan, Snežana Trifunović, Sandra Škrivanj, and David Finger. "Element Content in Volcano Ash, Soil and River Sediments of the Watershed in the Volcanic Area of South Iceland and Assessment of Their Mobility Potential." Water 13, no. 14 (July 13, 2021): 1928. http://dx.doi.org/10.3390/w13141928.

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In this work, we present the results of element content in river sediments and soil of the Rangárvellir river in southern Iceland as well as in the volcano ash from the Eyjafjallajökull eruption in 2010. Severe natural catastrophes have devastating impact on the environment. We selected the Rangárvellir area located in the vicinity of Mt Hekla, Iceland’s most active volcano, for our study. This study site is ideal to investigate wind and water erosion and sediment transport processes of two main glaciers rivers: the Eystri-Rangá and the Ytri-Rangá and the Hroarslækur River. Sediments of these rivers consist of volcano materials, ash and lava. In order to assess the sediment dynamics, we collected sediment, soil and volcanic ash. The fractioning of the elements was carried out using sequential extractions. The distribution of Si indicates that the sediments originate from the same geochemical basis. Li and partly B exist in the first phase of volcanic ash and river sediments but not in the mobile phases of soils. In the mobile phase of volcanic ash, P was found but it did not exist in the first phase of soil and sediments. These results suggest the different chemical fingerprints in the water sediments and surrounding soil.
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Ahmad, Asmita, Muchtar Salam Solle, and Christianto Lopulisa. "Soil Development from Volcanic Ash Based on Different Pyroclastic Composition." JOURNAL OF TROPICAL SOILS 24, no. 3 (February 19, 2020): 135. http://dx.doi.org/10.5400/jts.2019.v24i3.135-140.

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Potential volcano in several provinces in Indonesia played a significant role in the formation and quality of soil development. Soils that developed from the volcanic ashes often thought to contribute greatly to improve soil fertility, without regard to the nature and composition of the volcanic ash produced. Volcanic ash generated from the results in volcanic activity has a different composition, there are basaltic, andesitic and granitic, thereby affecting the process of formation and characteristics of the soil. The Objective of this study is to determine the soil development from different types of pyroclastic generated from Lokon volcano in North Sulawesi. The coordinates of research was in 1o 21' 18.0" N and 124o 49' 20.2"E. this research used ARL Quant X (EDXRF Analyzer) for X-Ray Fluorescence (XRF), Shimadzu XRD-7000 for X-Ray Diffractometer (XRD), geology map (scale 1:250,000), topographic map (scale 1:50,000), XRD software, GIS 10.3 software. Soil analysis for texture, pH, C-Organic, and cation exchange capacity (CEC). There are two types of pyroclastic as the source of soil development from volcanic ash, there are; 1) basaltic pyroclastic with 43.26% Si02 that are resulted from the first magmatic eruption and 2) andesitic pyroclastic with 5.09% Si02 that are resulted from the late magmatic eruption. Basaltic pyroclastic contains Fe 37.63%, Al 11.35%, Ca 13.17% and Mg 5.69%, while andesitic pyroclastic contains Fe 38.35%, Al 6.87%, and Ca 8.61%. Rainfall ranges from 2000-3500 mm/yr helped the soil formation and influenced the character of the soil, such as sandy loam of soil texture, 3.08% of soil C-organic content, 23.24 cmol+/kg of CEC and 148.93 cmol+/kg of clay CEC. Clay minerals content of the soil is vermiculite, kaolinite and, halloysite. Cation supply from basaltic pyroclastic influenced the formation of vermiculite mineral, whereas andesitic pyroclastic more influences the formation of the kaolinite mineral. Formation of soil texture with a predominance of the sand fraction is more influenced by the type of andesitic pyroclastic that more resistant to weathering processes.Keywords: Soil; volcanic ash; pyroclastic; vermiculite; kaolinite
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Tulin, Anabella. "Properties and Constraints of Red-Yellow and Volcanic Ash Soils Planted to Rootcrops in the Philippines." Science and Humanities Journal 07, no. 1 (December 2, 2007): 52–78. http://dx.doi.org/10.47773/shj.1998.071.4.

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Soil samples representing hightly weathered Red-Yellow and Volcanic Ash soils were collected from 45 pedons of different rootcrop producing provinces in the Philippines. This research was conducted to provide a comprehensive data on the properties and constraints of Red-yellow and Volcanic Ash soils planted to rootcrops through determination of the soils' various morphological, physical, and chemical properties. Some of the identified soil constraints associated with Red-Yellow and Volcanic Ash soils planted to rootcrops include : low organic matter, soil acidity, Al toxicity, low CEC, low amounts of exchangeable bases such as Ca, K, Mg, and Na, low P availability, high clay content, and highly compacted soils.
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Yatno, Edi, and Siti Zauyah. "PROPERTIES AND MANAGEMENT IMPLICATIONS OF SOILS FORMED FROM VOLCANIC MATERIALS IN LEMBANG AREA, WEST JAVA." Indonesian Journal of Agricultural Science 9, no. 2 (October 25, 2016): 44. http://dx.doi.org/10.21082/ijas.v9n2.2008.44-54.

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Soils formed from volcanic materials have a high potential for agricultural development, especially for horticultural crops, tea, and pine trees. Data on the characteristics of these soils are important for the management planning. Six representative soil profiles developed on andesitic volcanic ash and tuff in Lembang area, West Java were studied to determine the soil physical, chemical, and mineralogical properties, to study the relationship between the soil properties, and to classify the soils according to the Soil Taxonomy. The results indicated that all the soils had very deep (>150 cm) solum. In general, the volcanic ash soils were darker colored, more granular, more friable, less sticky and less plastic than the volcanic tuff soils. Physically, the ash soils had lower bulk density (0.44-0.73 mg m-3) and higher available water content (13-33%) than the tuff soils. Bulk density decreased with increasing allophane. Chemically, the ash soils had higher pHNaF (mostly > 10), higher organic carbon (4.3-6.8% in upper horizons), higher CEC (20- 44 cmolc kg-1), and higher P retention (> 85%) than the tuff soils. P retention logarithmically increased with increasing oxalate extractable Al and allophane. The sand fractions of the ash soils were dominated by hornblende, while the tuff soils were predominantly composed of opaque minerals. In the clay fractions, the ash soils were dominated by allophane, whereas the tuff soils showed high contents of gibbsite and metahalloysite. Soils developed on volcanic ash were classified as Thaptic Hapludands and Typic Melanudands, while soils formed from volcanic tuff were classified as Andic Dystrudepts. The low bulk density and friable consistency of the soils contributed to favorable soil tilth. However, high P retention and Al saturation in most soils are limiting factors for plant growth. Application of P fertilizers and liming coupled with efficient placement can be recommended to enhance P availability and reduce Al toxicity. Organic matter can be used to reduce Al toxicity. Soil conservation needs to be considered, especially in the steep slope areas.
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Yatno, Edi, and Siti Zauyah. "PROPERTIES AND MANAGEMENT IMPLICATIONS OF SOILS FORMED FROM VOLCANIC MATERIALS IN LEMBANG AREA, WEST JAVA." Indonesian Journal of Agricultural Science 9, no. 2 (October 25, 2016): 44. http://dx.doi.org/10.21082/ijas.v9n2.2008.p44-54.

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Soils formed from volcanic materials have a high potential for agricultural development, especially for horticultural crops, tea, and pine trees. Data on the characteristics of these soils are important for the management planning. Six representative soil profiles developed on andesitic volcanic ash and tuff in Lembang area, West Java were studied to determine the soil physical, chemical, and mineralogical properties, to study the relationship between the soil properties, and to classify the soils according to the Soil Taxonomy. The results indicated that all the soils had very deep (>150 cm) solum. In general, the volcanic ash soils were darker colored, more granular, more friable, less sticky and less plastic than the volcanic tuff soils. Physically, the ash soils had lower bulk density (0.44-0.73 mg m-3) and higher available water content (13-33%) than the tuff soils. Bulk density decreased with increasing allophane. Chemically, the ash soils had higher pHNaF (mostly > 10), higher organic carbon (4.3-6.8% in upper horizons), higher CEC (20- 44 cmolc kg-1), and higher P retention (> 85%) than the tuff soils. P retention logarithmically increased with increasing oxalate extractable Al and allophane. The sand fractions of the ash soils were dominated by hornblende, while the tuff soils were predominantly composed of opaque minerals. In the clay fractions, the ash soils were dominated by allophane, whereas the tuff soils showed high contents of gibbsite and metahalloysite. Soils developed on volcanic ash were classified as Thaptic Hapludands and Typic Melanudands, while soils formed from volcanic tuff were classified as Andic Dystrudepts. The low bulk density and friable consistency of the soils contributed to favorable soil tilth. However, high P retention and Al saturation in most soils are limiting factors for plant growth. Application of P fertilizers and liming coupled with efficient placement can be recommended to enhance P availability and reduce Al toxicity. Organic matter can be used to reduce Al toxicity. Soil conservation needs to be considered, especially in the steep slope areas.
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Rifa’i, Ahmad, Noriyuki Yasufuku, and Kiyoshi Omine. "Characterization and Effective Utilization of Volcanic Ash for Soil Improvement." Applied Mechanics and Materials 248 (December 2012): 292–97. http://dx.doi.org/10.4028/www.scientific.net/amm.248.292.

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Volcanic ash becomes environmental important issues as waste material if it is not effectively reduced or reused. In engineering practice, utilization of volcanic ash as substitution material is limited. Indonesia has a large road on soft soil and volcanic ash. The objectives of this paper are focused to study the characterization, classification and utilization of volcanic ash as soil stabilization material which give benefit in engineering practice and also be environmental friendly material. Engineering properties, mineral composition and soil mixture characteristics involve physical and mechanical properties are discussed. Result shows that the effect of addition of volcanic ash after curing time 14 days can improve the engineering properties of soft soil, decrease liquid limit, change curve of grain size distribution, increase bearing capacity, and decrease swelling potential. The soil-volcanic ash mixture with 35% of volcanic ash and 5% of lime is obtained as optimum mixture design. This result is still early stage and need further study.
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Anda, Markus, Anny Mulyani, and Suparto Suparto. "MINERALOGICAL CHARACTERIZATION AND CHEMICAL PROPERTIES OF SOILS AS A CONSIDERATION FOR ESTABLISHING SUSTAINABLE SOIL MANAGEMENT STRATEGIES." Indonesian Journal of Agricultural Science 13, no. 2 (October 23, 2012): 54. http://dx.doi.org/10.21082/ijas.v13n2.2012.54-67.

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Problems of soil limiting factors affecting crop growth were not fully understood owing to little attention has been given to soil mineralogy and its association to soil chemical properties. The objective of the study was to assess soil mineralogical and chemical properties of seven soils derived from different parent<br />materials as an integrated strategic consideration to establish soil management. Field study was carried out in 2009. Soils were sampled from each horizon of profiles. Results showed that primary and secondary minerals had a strong effect on soil chemical properties. The sand fraction of soils derived from basalt, gabbro, mica schist and serpentinite was dominated by resistant minerals (quartz or opaques), leading to very limited, if any, nutrients released from parent materials. The clay fraction was dominated by kaolinite for soils derived from<br />basalt, mica schist and gabbaro, and by amorphous materials for the soil derived from serpentinite resulting in low soil cation exchange capacity (CEC). For other three soils derived from volcanic tuff, volcanic basaltic andesite and volcanic ash, the easily weatherable minerals (feldspar and ferromagnesian) were dominant, suggesting the high reserved nutrients. The presence of halloysite and smectite minerals in the soil derived from volcanic tuff resulted in high soil CEC, while the dominance of amorphous materials in soils derived from volcanic basaltic andesite and volcanic ash was responsible for the low CEC. For<br />soils derived from basalt, serpentinite, mica schist and gabbro, therefore, the strategic management should be directed to restore soil CEC, pH, exchangeable cations and P content. For soils derived from volcanic tuff, volcanic basaltic andesite and volcanic ash, the presence of easily weatherable minerals indicated many reserved nutrients; hence the soil management is directed for replenishment of nutrients removed by crops. <br />
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Anda, Markus, Anny Mulyani, and Suparto Suparto. "MINERALOGICAL CHARACTERIZATION AND CHEMICAL PROPERTIES OF SOILS AS A CONSIDERATION FOR ESTABLISHING SUSTAINABLE SOIL MANAGEMENT STRATEGIES." Indonesian Journal of Agricultural Science 13, no. 2 (October 23, 2012): 54. http://dx.doi.org/10.21082/ijas.v13n2.2012.p54-67.

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Problems of soil limiting factors affecting crop growth were not fully understood owing to little attention has been given to soil mineralogy and its association to soil chemical properties. The objective of the study was to assess soil mineralogical and chemical properties of seven soils derived from different parent<br />materials as an integrated strategic consideration to establish soil management. Field study was carried out in 2009. Soils were sampled from each horizon of profiles. Results showed that primary and secondary minerals had a strong effect on soil chemical properties. The sand fraction of soils derived from basalt, gabbro, mica schist and serpentinite was dominated by resistant minerals (quartz or opaques), leading to very limited, if any, nutrients released from parent materials. The clay fraction was dominated by kaolinite for soils derived from<br />basalt, mica schist and gabbaro, and by amorphous materials for the soil derived from serpentinite resulting in low soil cation exchange capacity (CEC). For other three soils derived from volcanic tuff, volcanic basaltic andesite and volcanic ash, the easily weatherable minerals (feldspar and ferromagnesian) were dominant, suggesting the high reserved nutrients. The presence of halloysite and smectite minerals in the soil derived from volcanic tuff resulted in high soil CEC, while the dominance of amorphous materials in soils derived from volcanic basaltic andesite and volcanic ash was responsible for the low CEC. For<br />soils derived from basalt, serpentinite, mica schist and gabbro, therefore, the strategic management should be directed to restore soil CEC, pH, exchangeable cations and P content. For soils derived from volcanic tuff, volcanic basaltic andesite and volcanic ash, the presence of easily weatherable minerals indicated many reserved nutrients; hence the soil management is directed for replenishment of nutrients removed by crops. <br />
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Sun, Jongsun, Jae-kwang Ahn, Haseong Lee, Eui-Hong Hwang, and Duk Kee Lee. "Analysis of Japanese Volcanic Ash Dispersion on the Korean Peninsula using Satellite Imagery." Journal of the Korean Society of Hazard Mitigation 20, no. 3 (June 30, 2020): 269–75. http://dx.doi.org/10.9798/kosham.2020.20.3.269.

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A volcanic eruption is a kind of global natural disaster that can occur suddenly and cause great damage to humankind. During the eruption, the magma causes fatal damage to life and property in areas near the volcano, and nearby countries are affected by the spread of volcanic ash, causing secondary damage due to air and soil pollution. Near the Korean peninsula, there exists an active volcano that can spread volcanic ash over long distances by erupting above Volcanic Explosivity Index (VEI) 4. Volcanoes in Japan have been known to cause considerable volcanic ash damage on the Korean Peninsula during eruption. Accordingly, the Korea Meteorological Administration is developing technology to predict and monitor volcanic ash spread using satellite images. However, despite the fact that empirical models for volcanic ash diffusion range prediction are used during volcanic eruptions, continuous improvement is needed for accurate information prediction. In this study, satellite images were analyzed not for the predicted distance of volcanic ash clouds, but for the actual distance of volcanic ash dispersion in cases where the volcanic ashes dispersed in the direction of the Korean peninsula. Of the 3,880 volcanoes that erupted in Japan over the last four years, 111 cases were identified where the height and spread distance of the volcanic ash that erupted toward the Korean Peninsula can be confirmed. In addition, the actual volcanic eruption cases and modeling results were analyzed to determine the extent of volcanic ash spread, and a hypothetical scenario was tested to quantify the direct damage of the volcanic ash. From the analysis of the volcanic ash spread through the virtual simulations, it was found that the height of the volcanic ash, the direction of the wind, and wind speed during volcanic eruption were important factors.
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Dissertations / Theses on the topic "Volcanic ash soil"

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Mukai, Mana. "Differentiation of the vegetation-soil system through the interactions of soil N and P availabilities along an elevational gradient on Yakushima Island, Japan." Kyoto University, 2019. http://hdl.handle.net/2433/242919.

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Kyoto University (京都大学)
0048
新制・課程博士
博士(農学)
甲第21968号
農博第2358号
新制||農||1070(附属図書館)
学位論文||R1||N5219(農学部図書室)
京都大学大学院農学研究科地域環境科学専攻
(主査)教授 北山 兼弘, 教授 小杉 緑子, 教授 舟川 晋也
学位規則第4条第1項該当
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Blume, Theresa, Erwin Zehe, and Axel Bronstert. "Use of soil moisture dynamics and patterns at different spatio-temporal scales for the investigation of subsurface flow processes." Universität Potsdam, 2009. http://opus.kobv.de/ubp/volltexte/2010/4492/.

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Spatial patterns as well as temporal dynamics of soil moisture have a major influence on runoff generation. The investigation of these dynamics and patterns can thus yield valuable information on hydrological processes, especially in data scarce or previously ungauged catchments. The combination of spatially scarce but temporally high resolution soil moisture profiles with episodic and thus temporally scarce moisture profiles at additional locations provides information on spatial as well as temporal patterns of soil moisture at the hillslope transect scale. This approach is better suited to difficult terrain (dense forest, steep slopes) than geophysical techniques and at the same time less cost-intensive than a high resolution grid of continuously measuring sensors. Rainfall simulation experiments with dye tracers while continuously monitoring soil moisture response allows for visualization of flow processes in the unsaturated zone at these locations. Data was analyzed at different spacio-temporal scales using various graphical methods, such as space-time colour maps (for the event and plot scale) and binary indicator maps (for the long-term and hillslope scale). Annual dynamics of soil moisture and decimeterscale variability were also investigated. The proposed approach proved to be successful in the investigation of flow processes in the unsaturated zone and showed the importance of preferential flow in the Malalcahuello Catchment, a datascarce catchment in the Andes of Southern Chile. Fast response times of stream flow indicate that preferential flow observed at the plot scale might also be of importance at the hillslope or catchment scale. Flow patterns were highly variable in space but persistent in time. The most likely explanation for preferential flow in this catchment is a combination of hydrophobicity, small scale heterogeneity in rainfall due to redistribution in the canopy and strong gradients in unsaturated conductivities leading to self-reinforcing flow paths.
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Ferreira, Gabriela Ribeiro de Sena. "Arsenic Mobilization from Silicic Volcanic Rocks in the Southern Willamette Valley." PDXScholar, 2016. http://pdxscholar.library.pdx.edu/open_access_etds/2752.

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Volcanic tuffs and tuffaceous sediments are frequently associated with elevated As groundwater concentrations even though their bulk As contents (~ 5 mg kg-1; Savoie, 2013) are only marginally greater than the average crustal abundance of 4.8 mg g-1 (Rudnick & Gao, 2003). Thus, As mobilization must be facilitated by conditions particular to these rocks. Alkaline desorption, anionic competition, reactive glass dissolution, and reductive dissolution of iron oxides are proposed processes of As release from volcanic rocks. Geogenic As contamination of groundwater in the southern Willamette Valley in western Oregon has been well-documented since the early 1960s, and previous studies have identified the Little Butte Volcanics Series and Fisher and Eugene Formations as the source of As contamination. This study examines 19 samples from 10 units of ash flow tuffs and tuffaceous sediments within the Fisher Formation and Little Butte Volcanics Series, representing a range of weathering and devitrification, to determine conditions of mobilization and mineralogical constraints that control As release into solution. Leachate studies were conducted over a range of pH from 7 to 11, phosphate concentrations from 10 μM to 100 mM, and in time series from 4 to 196 hours. Results demonstrate that silicic volcanic tuffs are capable of mobilizing As in concentrations above regulatory limits at pH conditions produced naturally by the tuffs (pH 8-9) or with moderate concentrations of P (10-100 μM). Alteration products, e.g. zeolites and clays, appear to be the primary host phases for mobile As. Samples that do not contain these alteration products tend to produce concentrations of As well below regulatory limits and often below the instrument detection limits of this study. The type of alteration may influence As mobilization: tuffs containing more clays tend to mobilize As through surficial desorption, and tuffs containing more zeolites tend to mobilize As by dissolution or formation of colloids. Additionally, one volcaniclastic sample demonstrates that extremely elevated concentrations of As, up to 1000 μg/L are possible as a result of oxidative dissolution of As-bearing sulfide phases.
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Surtees, Alexander Peter Harrison. "Development of geochemical identification and discrimination by Raman spectroscopy : the development of Raman spectroscopic methods for application to whole soil analysis and the separation of volcanic ashes for tephrachronology." Thesis, University of Bradford, 2015. http://hdl.handle.net/10454/14409.

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Geochemistry plays a vital role in our understanding mechanisms behind major geological systems such as the Earth's crust and its oceans (Albarède, F. 2003). More recently, geo-chemistry has played a vital role in the field of forensic investigation and in period dating. Forensic soil samples have been traditionally analysed via examinations of colour, texture and mineral content by physical or chemical methods. However, these methods leave any organic or water-soluble fractions unexamined. Tephrochronology (the dating of sedimentary sequences using volcanic ash layers) is an important tool for the dating and correlation of sedimentary sequences containing archives and proxies of past environmental change. Its importance in this area has increased since the increased free carbon in out atmosphere has made radio-carbon dating unreliable. Tephrochronology requires successful geo-chemical identification of the tephras, a method reliant on electron probe micro-analysis (EPMA) to analyse major element composition. However, it is often impossible to differentiate key tephra layers using EPMA alone. Raman spectroscopy is commonly used in chemistry, since vibrational information is specific to the chemical bonds and symmetry of molecules, and can provide a fingerprint by which these can be identified. Here, we demonstrate how Raman spectroscopy can be used for the successful discrimination of mineral species in tephra through the analysis of individual glass shards. We further demonstrate how, with the use of oxidative preparation methods, Raman spectroscopy can be used to successfully discriminate between soil types using mineralogy as well as the organic and water-soluble fractions of soils.
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Surtees, Alexander P. H. "Development of geochemical identification and discrimination by Raman spectroscopy. The development of Raman spectroscopic methods for application to whole soil analysis and the separation of volcanic ashes for tephrachronology." Thesis, University of Bradford, 2015. http://hdl.handle.net/10454/14409.

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Geochemistry plays a vital role in our understanding mechanisms behind major geological systems such as the Earth's crust and its oceans (Albarède, F. 2003). More recently, geo-chemistry has played a vital role in the field of forensic investigation and in period dating. Forensic soil samples have been traditionally analysed via examinations of colour, texture and mineral content by physical or chemical methods. However, these methods leave any organic or water-soluble fractions unexamined. Tephrochronology (the dating of sedimentary sequences using volcanic ash layers) is an important tool for the dating and correlation of sedimentary sequences containing archives and proxies of past environmental change. Its importance in this area has increased since the increased free carbon in out atmosphere has made radio-carbon dating unreliable. Tephrochronology requires successful geo-chemical identification of the tephras, a method reliant on electron probe micro-analysis (EPMA) to analyse major element composition. However, it is often impossible to differentiate key tephra layers using EPMA alone. Raman spectroscopy is commonly used in chemistry, since vibrational information is specific to the chemical bonds and symmetry of molecules, and can provide a fingerprint by which these can be identified. Here, we demonstrate how Raman spectroscopy can be used for the successful discrimination of mineral species in tephra through the analysis of individual glass shards. We further demonstrate how, with the use of oxidative preparation methods, Raman spectroscopy can be used to successfully discriminate between soil types using mineralogy as well as the organic and water-soluble fractions of soils.
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Ayquipa, Espinoza Lorena Estefanny, and Benavente Branixa Nataly Vilca. "Propuesta de diseño de un pavimento rígido conformado de agregados marginales con presencia de cenizas volcánicas para el proyecto: Mejoramiento de carretera Moquegua – Omate - Arequipa, Tramo II, sector 1." Bachelor's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2020. http://hdl.handle.net/10757/652387.

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En el Perú existen zonas afectadas por la geología volcánica ya que disponen de insumos naturales llamados cenizas volcánicas. Este es un material formado por pequeños fragmentos de lavas silíceas de granos finos de colores blanquecinos, blandos y deleznables. Suelen presentar diversos grados de cementación, de tipo fisil, lo que los identifica en la categoría de suelos colapsables. Es por ello, que para la construcción del pavimento se requiere realizar la estabilización o mejoramiento de la subrasante para el siguiente proyecto que se desarrolla entre Arequipa y Moquegua. La presente investigación tiene como objetivo evaluar el uso de agregados marginales con cenizas volcánicas para el diseño de losa de concreto hidráulico referida, la misma que como estructura será evaluada con los resultados del módulo de flexión y esfuerzo crítico. Los resultados demostraron que, en la caracterización de agregados finos al contener cenizas volcánicas, no cumplan con todos los requerimientos propuestos en la norma peruana (EG-2013) del manual de carreteras. Sin embargo, el American Concrete Institute (ACI) incorpora excepciones para condiciones particulares de los áridos, posibilitando su uso a partir del cumplimiento de la resistencia y durabilidad requerida. Se propuso realizar el diseño de una mezcla de concreto para una resistencia teórica de f´c= 280 kg/cm2. Sin embargo, al ensayar las probetas a los 28 días de curado se obtuvo una resistencia de f´c= 380 kg/cm2 esto se debe a la estrecha relación positiva que presenta la ceniza volcánica con el cemento puzolánico empleado para la mezcla.
In Peru there are areas affected by volcanic geology and that have natural inputs called volcanic ash. This is a material formed by small fragments of siliceous lavas of fine grains of whitish, soft and delectable colors. They usually present varying degrees of cementation, of the fisile type, which identifies them in the category of collapsible soils. That is why, for the construction of the pavement it is necessary to perform the stabilization or improvement of the subgrade for the next project that is developed between Arequipa and Moquegua. The purpose of this research is to evaluate the use of marginal aggregates with volcanic ash for the design of the loss of referred hydraulic concrete, which will be determined as a structure with the results of the flexural and critical stress module. The results showed that, in the characterization of fine aggregates containing volcanic ash, they do not require all the requirements proposed in the Peruvian standard (EG-2013) of the road manual. However, the American Concrete Institute (ACI) incorporates the specific conditions of the aggregates, which allows its use based on compliance with the required strength and durability. It was proposed to design a concrete mix for a theoretical strength of f´c = 280 kg / cm2. However, when testing the probes after 28 days of curing, a resistance of f'c = 380 kg / cm2 was obtained, due to the close positive relationship between volcanic ash and the pozzolanic cement used for the mixture.
Tesis
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Casimir, Al-Mario. "From volcanic ash to allophanic dust : understanding phosphorous behaviour in Dominican soils." Thesis, Bangor University, 2015. https://research.bangor.ac.uk/portal/en/theses/from-volcanic-ash-to-allophanic-dust--understanding-phosphorous-behaviour-in-dominican-soils(cc56436e-015b-4489-b926-fd62dd25fb7c).html.

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The economy of the Commonwealth of Dominica is primarily agrarian based with banana production as one of the key export commodities, notwithstanding its preferential loss in the European Union market. However, banana productivity like most other crops has been severely impacted by a general low native soil nutrient status coupled with low application rates of phosphate (P) fertilizers in particular. The latter can be partly attributed to the low purchasing power on the international market as is evident in the long term trends of increaseprices for nitrogenous and phosphate fertilizers. The volcanic soils of the Commonwealth of Dominica were first studied in a relatively detailed way in 1967 with these soils showing high phosphate retention capacities. As a consequence, although P application is an integral part of profitable agricultural systems, improving soil fertility and plant nutrient management is a complex challenge. This challenge is amplified by the fact that a high ability to adsorb P is one of the characteristics of volcanic soils making P sparingly available for plant uptake. Hence although the world’s high reserves of phosphate ores are declining the demand for P fertilizers in the humid tropics are constantly increasing. If not managed properly, increase and continued input of P fertilizers and manure P may eventually lead to environmental rather than agronomic concerns. This research examines the influence of soil properties from some major agricultural soils in the Commonwealth of Dominica in order to obtain an improved comprehension of soil fertility limitations with the goal of developing nutrient management and farm developmental strategies geared towards increased crop production and overall farm productivity. In this regard special attention is given to the use of pyroligenous acid as a low molecular weight organic acid (LMWOA) in catalysing the dissolution of secondary P minerals. Hence the aim is to understand how native P stocks as well as applied fertilizer can potentially become more plant available thus reducing P fertilizer applications to a required minimum.
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Geddis, A. M. "Rapid estimate of solid volume in large tuff cores using a gas pycnometer." Thesis, The University of Arizona, 1996. http://etd.library.arizona.edu/etd/GetFileServlet?file=file:///data1/pdf/etd/azu_e9791_1994_473_sip1_w.pdf&type=application/pdf.

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Blume, Theresa. "Hydrological processes in volcanic ash soils : measuring, modelling and understanding runoff generation in an undisturbed catchment." Phd thesis, Universität Potsdam, 2008. http://opus.kobv.de/ubp/volltexte/2008/1655/.

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Streamflow dynamics in mountainous environments are controlled by runoff generation processes in the basin upstream. Runoff generation processes are thus a major control of the terrestrial part of the water cycle, influencing both, water quality and water quantity as well as their dynamics. The understanding of these processes becomes especially important for the prediction of floods, erosion, and dangerous mass movements, in particular as hydrological systems often show threshold behavior. In case of extensive environmental changes, be it in climate or in landuse, the understanding of runoff generation processes will allow us to better anticipate the consequences and can thus lead to a more responsible management of resources as well as risks. In this study the runoff generation processes in a small undisturbed catchment in the Chilean Andes were investigated. The research area is characterized by steep hillslopes, volcanic ash soils, undisturbed old growth forest and high rainfall amounts. The investigation of runoff generation processes in this data scarce area is of special interest as a) little is known on the hydrological functioning of the young volcanic ash soils, which are characterized by extremely high porosities and hydraulic conductivities, b) no process studies have been carried out in this area at either slope or catchment scale, and c) understanding the hydrological processes in undisturbed catchments will provide a basis to improve our understanding of disturbed systems, the shift in processes that followed the disturbance and maybe also future process evolution necessary for the achievement of a new steady state. The here studied catchment has thus the potential to serve as a reference catchment for future investigations. As no long term data of rainfall and runoff exists, it was necessary to replace long time series of data with a multitude of experimental methods, using the so called "multi-method approach". These methods cover as many aspects of runoff generation as possible and include not only the measurement of time series such as discharge, rainfall, soil water dynamics and groundwater dynamics, but also various short term measurements and experiments such as determination of throughfall amounts and variability, water chemistry, soil physical parameters, soil mineralogy, geo-electrical soundings and tracer techniques. Assembling the results like pieces of a puzzle produces a maybe not complete but nevertheless useful picture of the dynamic ensemble of runoff generation processes in this catchment. The employed methods were then evaluated for their usefulness vs. expenditures (labour and financial costs). Finally, the hypotheses - the perceptual model of runoff generation generated from the experimental findings - were tested with the physically based model Catflow. Additionally the process-based model Wasim-ETH was used to investigate the influence of landuse on runoff generation at the catchment scale. An initial assessment of hydrologic response of the catchment was achieved with a linear statistical model for the prediction of event runoff coefficients. The parameters identified as best predictors give a first indication of important processes. Various results acquired with the "multi-method approach" show that response to rainfall is generally fast. Preferential vertical flow is of major importance and is reinforced by hydrophobicity during the summer months. Rapid lateral water transport is necessary to produce the fast response signal, however, while lateral subsurface flow was observed at several soil moisture profiles, the location and type of structures causing fast lateral flow on the hillslope scale is still not clear and needs to be investigated in more detail. Surface runoff has not been observed and is unlikely due to the high hydraulic conductivities of the volcanic ash soils. Additionally, a large subsurface storage retains most of the incident rainfall amount during events (>90%, often even >95%) and produces streamflow even after several weeks of drought. Several findings suggest a shift in processes from summer to winter causing changes in flow patterns, changes in response of stream chemistry to rainfall events and also in groundwater-surface water interactions. The results of the modelling study confirm the importance of rapid and preferential flow processes. However, due to the limited knowledge on subsurface structures the model still does not fully capture runoff response. Investigating the importance of landuse on runoff generation showed that while peak runoff generally increased with deforested area, the location of these areas also had an effect. Overall, the "multi-method approach" of replacing long time series with a multitude of experimental methods was successful in the identification of dominant hydrological processes and thus proved its applicability for data scarce catchments under the constraint of limited resources.
Die Abflussdynamik in Mittel- und Hochgebirgen wird durch die Abflussbildungsprozesse im Einzugsgebiet bestimmt. Diese Prozesse kontrollieren damit zu großen Teilen den terrestrischen Teil des Wasserkreislaufs und beeinflussen sowohl Wasserqualität als auch -quantität. Das Verständnis von Abflussbildungsprozessen ist besonders wichtig für die Vorhersage von Hochwasser, Erosion und Massenbewegungen (z.B. Erdrutsche) da hydrologische Systeme oft Schwellenwertverhalten aufweisen. Im Falle weit reichender Umweltveränderungen, wie z.B. Klima- oder Landnutzungsänderungen kann das Verständnis der Abflussbildungsprozesse ein verantwortungsvolleres Management sowohl der Ressourcen als auch der Risiken ermöglichen. In dieser Studie wurden die Abflussbildungsprozesse in einem kleinen, anthropogen unbeeinflussten Einzugsgebiet in den Chilenischen Anden untersucht. Das Untersuchungsgebiet ist durch steile Hänge, vulkanische Ascheböden, ungestörten Naturwald und hohe Niederschlagsmengen charakterisiert. Die Erforschung von Abflussbildungsprozessen ist hier von besonderem Interesse, da a) wenig über das hydrologische Verhalten der hochporösen und hochleitfähigen jungen Ascheböden bekannt ist, b) in dieser Region bisher keine Studien auf Hang- oder Einzugsgebietsskala durchgeführt wurden, und c) das Prozessverständnis in ungestörten Einzugsgebieten als Basis zum besseren Verständnis bereits anthropogen beeinflusster Gebiete dienen kann. Das hier untersuchte Gebiet hat daher das Potential zum Referenzgebiet für zukünftige Studien und Forschungsprojekte. Bedingt durch die Kürze der vorliegenden Abfluss- und Niederschlagszeitreihen war es nötig, den bestehenden Datenmangel durch eine Vielzahl von experimentellen Methoden und Ansätzen auszugleichen. Dieser Ansatz wird im Folgenden der "Multi-Methoden-Ansatz" genannt. Die ausgewählten Methoden sollten dabei so viele Aspekte der Abflussbildung abdecken wie möglich. Es wurden daher nicht nur Zeitreihen von Abfluss, Niederschlag, Bodenfeuchte- und Grundwasserdynamik gemessen, sondern auch eine große Zahl an Kurzzeitmessungen und Experimenten durchgeführt. Diese beinhalteten u.a. Messung des Bestandesniederschlags, Bestimmung der Wasserchemie, Bestimmung bodenphysikalischer Parameter und der Bodenmineralogie, sowie geophysikalische Messungen und Tracermethoden. Die Synthese der Resultate gleicht dem Zusammensetzen eines Puzzles. Das so entstandene Bild des dynamischen Prozess-Ensembles ist trotz möglicher fehlender Puzzlestücke hochinformativ. In einem nächsten Schritt wurden die ausgewählten Methoden im Hinblick auf Erkenntnisgewinn und Kosten (d.h. finanzielle Kosten und Arbeitszeit) evaluiert. Das durch die experimentellen Ergebnisse gewonnene Bild der Abflussbildung wurde anschließend mit Hilfe des physikalisch basierten Modells Catflow überprüft. Weiterhin wurde mit dem prozessbasierten Modell Wasim-ETH der Einfluss der Landnutzung auf die Abflussbildung auf Einzugsgebietsskala untersucht. Die Ergebnisse des "Multi-Methoden-Ansatzes" zeigen, dass die Abflussreaktion in diesem Gebiet sehr schnell erfolgt. Vertikales präferenzielles Fliessen ist hier von großer Bedeutung und wird in den Sommermonaten noch durch Hydrophobizitätseffekte verstärkt. Schneller lateraler Fluss im Untergrund ist eine weitere Vorraussetzung für die schnelle Reaktion des Abflusses (Oberflächenabfluss ist hier aufgrund der hohen hydraulischen Leitfähigkeiten unwahrscheinlich). Obwohl bei der Untersuchung der Bodenfeuchtedynamik in einigen Profilen laterale Fließmuster beobachtet wurden, ist die Art und Lage der Untergrundstrukturen, die auf der Hangskala schnellen lateralen Fluss verursachen, noch unklar und sollte genauer untersucht werden. Die Tatsache, dass bei Niederschlagsereignissen der Großteil der Niederschlagsmenge nicht zum Abfluss kommt (>90%, oft auch >95%), sowie der kontinuierliche Abfluss selbst nach Wochen der Trockenheit, lassen auf einen großen unterirdischen Speicher schließen. Der Wechsel von Winter (nass) zu Sommer (trocken) scheint Veränderungen im Prozess-Ensemble hervorzurufen, die sich in der Änderung von Fließmustern, von Grundwasser-Oberflächenwasser-Interaktionen, sowie veränderter Reaktion der Wasserchemie auf Niederschlagsereignisse beobachten ließ. Die Modellstudie bestätigte die Bedeutung der schnellen Fließwege. Als Folge von Informationsdefiziten über die Strukturen des Untergrunds ließ sich jedoch die Abflussbildung noch nicht vollständig reproduzieren. Die Untersuchung zur Bedeutung der Landnutzung für die Abflussbildung mit Hilfe eines Einzugsgebietsmodells zeigte die Zunahme der maximalen Abflüsse mit zunehmender Entwaldung. Weiterhin erwies sich auch die Lage der abgeholzten Flächen als ein wichtiger Faktor für die Abflussreaktion. Der "Multi-Methoden-Ansatz" lieferte wichtige Erkenntnisse zum Verständnis der Abflussbildungspozesse in den Anden Südchiles und zeigte sich als adäquates Mittel für hydrologische Prozess-Studien in datenarmen Gebieten.
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Drijber, Rhae Alda. "The influence of a combined elevation-vegetation site factor on the nature of the stable humus formed in soils derived from volcanic ash." Thesis, University of British Columbia, 1986. http://hdl.handle.net/2429/25870.

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An elevational sequence of soils on the volcano Iztaccihuatl was selected to study the effect of a combined elevation-vegetation site factor on the nature of the stable humus formed in soils developed from recent volcanic ash. One sample plot was selected in each of three vegetation zones; Abies religiosa, Pinus hartwegii and Zacatonal, an alpine grassland. In Part 1, non-parametric statistics were used to evaluate several parameters measured on the Ah₁ and Ah₂ soil horizons. In Part 2, composite samples were prepared and the polymeric humic acid and fraction A were bulk isolated. The results from Part 1 indicated that the soils were at an early stage in their development. The degree of mineral weathering increased with elevation and with depth in the profile. In the surface mineral horizons humus-Al complexes were dominant with insignificant formation of "amorphous" aluminosilicate clay minerals. Horizon differences in organic matter characteristics were not apparent in the Abies religiosa and Zacatonal zones, but were present in the Pinus hartwegii zone. The humus content differed little among the three zones, although qualitative differences related to the vegetation site factor were apparent in the kinds of organic components in the fulvic acid fraction. The Ch/Cf ratio 1% was related to the regional climate. E 1%/400 HA indicated that the humic acids from the three vegetation zones were similar in maturity; hence, zonal differences in E 1%/600 HA and E₄/E₆ HA were related to the average polymer molecular weight which increased from the Abies religiosa to the Zacatonal zone. In Part 2, elemental and infrared analysis failed to detect any zonal differences in the humic acid and fraction A. However, the data supported the rapid formation of a high molecular weight, highly aliphatic humic acid fraction rich in nitrogen. Four major phenolic acids of lignin origin were identified in the humic acid and fraction A hydrolysates -protocatechuic acid, p-hydroxybenzoic acid, vanillic acid and syringic acid - which established a lignin-derived component of the polymeric humus fractions. The source of vegetation for humus formation could be clearly distinguished from the ratios of the major phenolic acids identified.
Land and Food Systems, Faculty of
Graduate
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Books on the topic "Volcanic ash soil"

1

Stark, Nellie. Nutrient release from Mount St. Helens volcanic ash and retention by western Montana soil. Ogden, UT: U.S. Dept. of Agriculture, Forest Service, Intermountain Forest and Range Experiment Station, 1985.

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Rattray, Gordon W. Adsorption of sulfur hexafluoride onto crushed tuffs from the Yucca Mountain area, Nye County, Nevada. Denver, Colo: U.S. Dept. of the Interior, U.S. Geological Survey, 1995.

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Shoji, Sadao. Volcanic ash soils: Genesis, properties, and utilization. Amsterdam: Elsevier, 1993.

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Congreso Internacional de Suelos Volcánicos (1984 La Laguna, Canary Islands). Volcanic soils: Weathering and landscape relationships of soils on tephra and basalt : selected papers of the "Congreso Internacional de Suelos Volcánicos" : La Laguna, Tenerife, Canary Islands, Spain, July 1984. Edited by Fernández Caldas E and Yaalon Dan H. Cremlingen, W. Germany: Catena Verlag, 1985.

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Intermountain Research Station (Ogden, Utah), ed. Susceptibility of volcanic ash-influenced soil in northern Idaho to mechanical compaction. Ogden, UT (324 25th Street, Ogden 84401): U.S. Dept. of Agriculture, Forest Service, Intermountain Research Station, 1993.

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Soil interpretations, andic soil materials: Proceedings, November 2-4, 1993, Portland, Oregon. [Portland, Ore.?: s.n., 1993.

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Single- and cross-hole pneumatic tests in unsaturated fractured tuffs at the Apache Leap Research Site: Phenomenology, spatial variability, connectivity and scale. Washington, DC: Division of Regulatory Applications, Office of Nuclear Regulatory Research, U.S. Nuclear Regulatory Commission, 1998.

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Rocky Mountain Research Station (Fort Collins, Colo.), ed. Volcanic-ash-derived forest soils of the inland northwest: Properties and implications for management and restoration, 9-10 November 2005 Coeur d'Alene, ID. Fort Collins, Colo: U.S. Dept. of Agriculture, Forest Service, Rocky Mountain Research Station, 2007.

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Volcanic Ash Soils - Genesis, Properties and Utilization. Elsevier, 1993. http://dx.doi.org/10.1016/s0166-2481(08)x7013-8.

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Silvestri, Francesco, Tatiana Rotonda, Manuela Cecconi, and Paolo Tommasi. Volcanic Rocks and Soils. Taylor & Francis Group, 2015.

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Book chapters on the topic "Volcanic ash soil"

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Nimlos, T. J. "Reclamation of Indurated, Volcanic-Ash Materials in Latin America." In Advances in Soil Science, 153–70. New York, NY: Springer New York, 1992. http://dx.doi.org/10.1007/978-1-4612-2820-2_6.

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Kano, Ichiro. "A Pedological Investigation of Japanese Volcanic-Ash Soils." In Selected Papers in Soil Formation and Classification, 150–53. Madison, Wisconsin, USA: Soil Science Society of America, Inc., 2015. http://dx.doi.org/10.2136/sssaspecpub1.c13.

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Oyuntsetseg, Bolormaa, Nobuo Sakagami, Khulan Nyamsanjaa, and Makiko Watanabe. "Chemical Characterization of Sclerotia Grains Collected from a Volcanic Ash Soil Profile in Japan." In Progress in Soil Science, 77–89. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-33-4252-1_5.

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Devnita, Rina, Ridha Hudaya, Rija Sudirja, Ade Setiawan, Mega F. Rosana, and Hemanta Hazarika. "Remediation of Volcanic Ash Soil in Related to Soil Erodibility Against the Heavy Rainfall." In Geotechnical Hazards from Large Earthquakes and Heavy Rainfalls, 619–27. Tokyo: Springer Japan, 2016. http://dx.doi.org/10.1007/978-4-431-56205-4_56.

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Nomiyama, Hikaru, and Satoshi Murakami. "Spatial Distribution of Volcanic Ash Soil Layers by Cokriging Interpolation Method in Mashiki Town, Kumamoto." In Lecture Notes in Civil Engineering, 1081–85. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-15-2184-3_140.

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Farmer, V. C., and J. D. Russell. "Structures and Genesis of Allophanes and Imogolite and their Distribution in Non-Volcanic Soils." In NATO ASI Series, 165–78. Boston, MA: Springer US, 1990. http://dx.doi.org/10.1007/978-1-4899-2611-1_8.

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Okamoto, Tamotsu, Kiyomi Kamiyama, and Kiyoshi Wachi. "Background levels of heavy metals in kanagawa prefecture farm soils impacted by volcanic ash from Mt. Fuji." In Plant Nutrition for Sustainable Food Production and Environment, 553–54. Dordrecht: Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-009-0047-9_174.

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Hernández, Z., G. Almendros, J. Sanz, J. P. Pérez-Trujillo, J. A. González-Pérez, and F. J. González-Vila. "Assessment of Agricultural Practices on Volcanic Ash Soils Assisted by Automated Interpretation of Mid-Infrared Spectra and Partial Least Squares Multivariate Statistical Approach." In Functions of Natural Organic Matter in Changing Environment, 255–58. Dordrecht: Springer Netherlands, 2012. http://dx.doi.org/10.1007/978-94-007-5634-2_46.

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"volcanic ash soil." In Dictionary Geotechnical Engineering/Wörterbuch GeoTechnik, 1493. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-41714-6_220870.

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Shoji, S., R. Dahlgren, and M. Nanzyo. "Chapter 2 Morphology of Volcanic Ash Soils." In Developments in Soil Science, 7–35. Elsevier, 1993. http://dx.doi.org/10.1016/s0166-2481(08)70263-0.

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Conference papers on the topic "Volcanic ash soil"

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Kim, J., M. G. Dunn, A. J. Baran, D. P. Wade, and E. L. Tremba. "Deposition of Volcanic Materials in the Hot Sections of Two Gas Turbine Engines." In ASME 1992 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1992. http://dx.doi.org/10.1115/92-gt-219.

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This paper reports the results of a series of tests designed to determine the melting and subsequent deposition behavior of volcanic ash cloud materials in modern gas turbine engine combustors and high pressure turbine vanes. The specific materials tested were Mt. St. Helens ash and a soil blend containing volcanic ash (black scoria) from Twin Mountain, New Mexico. Hot section test systems were built using actual engine combustors, fuel nozzles, ignitors, and high pressure turbine vanes from an Allison T56 engine can-type combustor and a more modern Pratt and Whitney F-100 engine annular-type combustor. A rather large turbine inlet temperature range can be achieved using these two combustors. The deposition behavior of volcanic materials as well as some of the parameters that govern whether or not these volcanic ash materials melt and subsequently deposit are discussed.
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Kajita, Yukihide, Taiji Mazda, Kunihiko Uno, and Takeshi Kitahara. "2-dimensional effective stress analysis for a damaged bridge located in the caldera of Mount Aso in 2016 Kumamoto earthquake." In IABSE Congress, Christchurch 2021: Resilient technologies for sustainable infrastructure. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2021. http://dx.doi.org/10.2749/christchurch.2021.1142.

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<p>In this paper, we conducted a two-dimensional effective stress analysis in consideration of the interaction between the ground and the structure for the Kurumakaeri Bridge which is located in the caldera of Mount Aso. From the results of the analyses, it is confirmed that the ground around the abutment subsided by about 26 cm due to the deformation of the soft volcanic ash soil. Furthermore, it is confirmed that the collision between the superstructure and the abutment happened because the abutment moved to the front side. Due to this movement, the deformation of about 34 cm occurred at the rubber bearing after the earthquake ended.</p>
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Rifa'i, A., and N. Yasufuku. "Effect of Volcanic Ash Utilization As Substitution Material for Soil Stabilization in View Point of Geo-Environment." In Geo-Shanghai 2014. Reston, VA: American Society of Civil Engineers, 2014. http://dx.doi.org/10.1061/9780784413401.014.

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Syahril, S., A. Suyono, and I. R. Prajudi. "Study of Soft Soil Stabilization on Slope Using Volcanic Ash and Phosphoric Acid Concerning of Plasticity Index." In International Seminar of Science and Applied Technology (ISSAT 2020). Paris, France: Atlantis Press, 2020. http://dx.doi.org/10.2991/aer.k.201221.075.

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Syahril, S., A. Suyono, and I. R. Prajudi. "Reinforcement of Soft Soil on Slope Using Volcanic Ash and Phosphoric Acid Stabilization for Subgrade of Rigid Pavement." In International Seminar of Science and Applied Technology (ISSAT 2020). Paris, France: Atlantis Press, 2020. http://dx.doi.org/10.2991/aer.k.201221.076.

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Nyachoti, Syprose, Segun Adebayo, and Tewodros Godebo. "Metals and Trace Elements Composition of Maize, Wheat, and Teff Grown in Volcanic-Ash Rich Soils of the Main Ethiopian Rift Valley." In Goldschmidt2020. Geochemical Society, 2020. http://dx.doi.org/10.46427/gold2020.1957.

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Yuniarti, Anni, Mahfud Arifin, Emma Trinurasi Sofyan, Betty Natalie, Rija Sudirja, and Dewi Dahliani. "The effect of Sinabung volcanic ash and rock phosphate nanoparticle on CEC (cation exchange capacity) base saturation exchange (K, Na, Ca, Mg) and base saturation at Andisol soils Ciater, West Java." In THE 1ST INTERNATIONAL CONFERENCE AND EXHIBITION ON POWDER TECHNOLOGY INDONESIA (ICePTi) 2017. Author(s), 2018. http://dx.doi.org/10.1063/1.5021196.

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Reports on the topic "Volcanic ash soil"

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Page-Dumroese, Deborah S. Susceptibility of volcanic ash-influenced soil in northern Idaho to mechanical compaction. Ogden, UT: U.S. Department of Agriculture, Forest Service, Intermountain Research Station, 1993. http://dx.doi.org/10.2737/int-rn-409.

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Sleep, Matthew, and Morgan Masley. The Use of Mt. Mazama Volcanic Ash as Natural Pozzolans for Sustainable Soil and Unpaved Road Improvement. Transportation Research and Education Center, 2018. http://dx.doi.org/10.15760/trec.202.

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Geist, J. Michael, John W. Hazard, and Kenneth W. Seidel. Juvenile tree growth on some volcanic ash soils disturbed by prior forest harvest. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station, 2008. http://dx.doi.org/10.2737/pnw-rp-573.

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