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Journal articles on the topic 'FLUVIAL CHARACTERISTICS'

Author: Grafiati

Published: 18 May 2024

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1

Woronko, Barbara, Paweł Zieliński, and Robert Jan Sokołowski. "Climate evolution during the Pleniglacial and Late Glacial as recorded in quartz grain morphoscopy of fluvial to aeolian successions of the European Sand Belt." Geologos 21, no. 2 (2015): 89–103. http://dx.doi.org/10.1515/logos-2015-0005.

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Abstract We present results of research into fluvial to aeolian successions at four sites in the foreland of the Last Glacial Maximum, i.e., the central part of the “European Sand Belt”. These sites include dune fields on higher-lying river terraces and alluvial fans. Sediments were subjected to detailed lithofacies analyses and sampling for morphoscopic assessment of quartz grains. Based on these results, three units were identified in the sedimentary succession: fluvial, fluvio-aeolian and aeolian. Material with traces of aeolian origin predominate in these sediments and this enabled conclus

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Lin, Zhipeng, Le Chen, Jingfu Shan, Tan Zhang, Qianjun Sun, and Yiwu Wang. "A New Sequence Stratigraphic Framework of Terrestrial Fluvial." Studies in Engineering and Technology 4, no. 1 (2017): 85. http://dx.doi.org/10.11114/set.v4i1.2521.

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Currently, the recognition and research on the classification of fluvial types mainly focus on the description and results of a series of indicators, such as the plane shape and sediment characteristics. However, there is limited literacy about how to demonstrate the fluvial types from the depositional process, especially less on sequence model of inland fluvial. Thus, this paper aims o propose a new kind of sequence stratigraphic framework, which is able to reflect the fluvial processes under the perspective of sequence stratigraphy. Accordingly, we use the principle of concrete analysis for

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3

Hassan, Marwan A., Hal Voepel, Rina Schumer, Gary Parker, and Luigi Fraccarollo. "Displacement characteristics of coarse fluvial bed sediment." Journal of Geophysical Research: Earth Surface 118, no. 1 (2013): 155–65. http://dx.doi.org/10.1029/2012jf002374.

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4

Payenberg, T. H. D., and S. C. Lang. "RESERVOIR GEOMETRY OF FLUVIAL DISTRIBUTARY CHANNELS—IMPLICATIONS FOR NORTHWEST SHELF, AUSTRALIA, DELTAIC SUCCESSIONS." APPEA Journal 43, no. 1 (2003): 325. http://dx.doi.org/10.1071/aj02017.

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The exploration and development of stratigraphically trapped hydrocarbons requires detailed knowledge of the morphologies and reservoir characteristics of the stratigraphic body. Fluvial distributary channels are important exploration targets because they are typically isolated reservoirs, laterally and vertically sealed by delta plain and abandoned channel mudstone, and thus form excellent stratigraphic traps. The morphology and reservoir characteristics of fluvial distributary channels have been confused with fluvial channels in the past. Knowing the characteristics of fluvial distributary c

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Huang, Kai, Chunsheng Shen, Kai Kang, Libing Wang, Zhongbo Xu, and Lin Li. "Characteristics of Mudstone in Complex Fluvial Sedimentary System in Bohai L Oilfield." Earth Science Research 7, no. 2 (2018): 79. http://dx.doi.org/10.5539/esr.v7n2p79.

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Bohai L oilfield develops a complex fluvial sedimentary system, which includes many types of fluvial sedimentary facies. Based on the coring well of oil field, the distribution characteristics of mudstone are analyzed, it is shown that the mudstone has similar internal structure and can be classified into four types according to its color: gray to grayish, variegated, brown to gray-brown and khaki, the assemblage has a large gray to grayish mudstone section, large gray to grayish mudstone intercalated thin layer sandstone, gray to grayish mudstone associated with variegated (brown) mudstone, g

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ZHANG, Yuanfu, Xin DAI, Min WANG, and Xinxin LI. "The concept, characteristics and significance of fluvial fans." Petroleum Exploration and Development 47, no. 5 (2020): 1014–26. http://dx.doi.org/10.1016/s1876-3804(20)60113-6.

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Ferreira, Cesar Cardoso, Paulo César Rocha, Arnaldo Yoso Sakamoto, and Heloissa Gabriela Silva Sokolowski. "Análise Temporal da Dinâmica de Aspectos Físicos Fluviais no Rio Abobral-Pantanal-MS-BR." Revista Brasileira de Geografia Física 12, no. 7 (2020): 2672. http://dx.doi.org/10.26848/rbgf.v12.7.p2672-2684.

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O conhecimento de características geomorfológicas fluviais é de suma relevância para estudos voltados aos recursos hídricos, tanto do ponto de vista da hidráulica, da sedimentologia, como também do ponto de vista do planejamento regional. Nesse sentido, este artigo tem como objetivo individualizar e analisar sazonalmente a dinâmica fluvial do rio Abobral no Pantanal-MS situado na bacia do Alto Paraguai, compreendendo uma área composta por extensa superfície de acumulação sujeita a inundações periódicas. Para alcançar o objetivo supracitado, foram executados procedimentos divididos em quatro et

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Guo, Shao Lei, and Xuan Ying Guo. "The Fluvial Process of Wandering Reach in the Lower Yellow River." Applied Mechanics and Materials 438-439 (October 2013): 1309–13. http://dx.doi.org/10.4028/www.scientific.net/amm.438-439.1309.

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There are three characteristics of river channel which are wandering, transitional, bending in the Lower Yellow River. The fluvial process is complicated and variable. The channel characteristics of wandering reach was analyzed, and then based on the measured data and model test data, the formation conditions, basic characteristics and influencing factor of the fluvial process law in wandering river were analyzed. All of this can provide technical guidance and theoretical support for river regulation of the Lower Yellow River.

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Zheng, Dong-Yu, and Si-Xuan Wu. "Principal component analysis of textural characteristics of fluvio-lacustrine sandstones and controlling factors of sandstone textures." Geological Magazine 158, no. 10 (2021): 1847–61. http://dx.doi.org/10.1017/s0016756821000418.

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AbstractTextures are important features of sandstones; however, their controlling factors are not fully understood. We present a detailed textural analysis of fluvio-lacustrine sandstones and discuss the influences of provenance and depositional environments on sandstone textures. The upper Permian – lowermost Triassic Wutonggou sandstones in the Bogda Mountains, NW China, are the focus of this study. Sandstone thin-sections were studied by point counting and their textures were analysed using statistical and principal component analysis. Fluvial lithic, fluvial feldspathic, deltaic lithic, de

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Alexouli - Livaditi, A., K. Vouvalidis, G. Livaditis, and S. Pechlivanidou. "Drainage network characteristics of Athens plain at the end of the 19th century." Bulletin of the Geological Society of Greece 40, no. 4 (2007): 1513. http://dx.doi.org/10.12681/bgsg.17054.

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Kephissos River is the main fluvial system of the hydrological basin of Athens. It drains the central part of Attica and almost the entire urban area of the city of Athens. In this paper, we present the results of both the qualitative and quantitative analysis of the initial drainage network of the plain before the urbanization through the processing of digitised data with GIS software. The initial drainage network of the. basin, plotted with the use of a very detailed mosaic of maps, was constructed by German cartographers (Curtius E. and Kaupert J.) at the end of the 19' century. For the ana

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11

解, 超. "Research on Composite Sandbody Structure Characteristics of Fluvial Reservoirs." Advances in Geosciences 08, no. 03 (2018): 608–17. http://dx.doi.org/10.12677/ag.2018.83065.

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12

Yeh, Keh-Chia, Shian-Jang Li, and Wen-Lin Chen. "Modeling Non-Uniform-Sediment Fluvial Process by Characteristics Method." Journal of Hydraulic Engineering 121, no. 2 (1995): 159–70. http://dx.doi.org/10.1061/(asce)0733-9429(1995)121:2(159).

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13

Wang, Sui-ji, Jin-song Li, and Shou-peng Yin. "Basic characteristics and controlling factors of anastomsing fluvial systems." Chinese Geographical Science 10, no. 1 (2000): 30–37. http://dx.doi.org/10.1007/s11769-000-0033-6.

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14

Wang, Yuanjian, Xudong Fu, and Guangqian Wang. "Conceptual Model for Simulating the Adjustments of Bankfull Characteristics in the Lower Yellow River, China." Journal of Applied Mathematics 2014 (2014): 1–12. http://dx.doi.org/10.1155/2014/852174.

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We present a conceptual model for simulating the temporal adjustments in the banks of the Lower Yellow River (LYR). Basic conservation equations for mass, friction, and sediment transport capacity and the Exner equation were adopted to simulate the hydrodynamics underlying fluvial processes. The relationship between changing rates in bankfull width and depth, derived from quasiuniversal hydraulic geometries, was used as a closure for the hydrodynamic equations. On inputting the daily flow discharge and sediment load, the conceptual model successfully simulated the 30-year adjustments in the ba

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15

Lu, Zhiyuan, Zhiliang He, Shizhong Ma, and Yu He. "Sedimentary characteristics and sand-body distributions in the Lower Permian He 8 Member, Ordos Basin, China." Interpretation 10, no. 2 (2022): T223—T236. http://dx.doi.org/10.1190/int-2021-0101.1.

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The Lower Permian He 8 Member (P1h8) in the Ordos Basin is a typical producing zone of tight lithologic gas reservoirs. Analyses of sedimentary characteristics, electrofacies, and sand-body distributions of P1h8, conducted on modern fluvial deposits, outcrops, cores, and well logs, revealed that braided rivers that developed in the Lower P1h8 and Upper P1h8 are characterized by meandering river. Within these fluvial deposits, the procedure consists of analyzing high-resolution sequence stratigraphy and sedimentary dynamics defined from calibrated logging curve signatures and depositional studi

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16

Gouw, Marc J. P., and Marc P. Hijma. "From apex to shoreline: fluvio-deltaic architecture for the Holocene Rhine–Meuse delta, the Netherlands." Earth Surface Dynamics 10, no. 1 (2022): 43–64. http://dx.doi.org/10.5194/esurf-10-43-2022.

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Abstract. Despite extensive research on alluvial architecture, there is still a pressing need for data from modern fluvio-deltaic environments. Previous research in the fluvial-dominated proximal and central Rhine–Meuse delta (the Netherlands) has yielded clear spatial trends in alluvial architecture. In this paper, we include the backwater length to establish architectural trends from apex to shoreline. Channel-belt sand body width / thickness ratios and interconnectedness were determined, and the proportions of fluvial channel-belt deposits, fluvial overbank deposits, organics and intertidal

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van den Berg, J. H., J. R. Boersma, and A. van Gelder. "Diagnostic sedimentary structures of the fluvial-tidal transition zone – Evidence from deposits of the Rhine and Meuse." Netherlands Journal of Geosciences 86, no. 3 (2007): 287–306. http://dx.doi.org/10.1017/s0016774600077866.

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AbstractIn mesotidal settings the transition of a coastal plain estuary to the river is marked by the change of a multiple ebb and flood channel configuration to a single channel system. At high river discharge fluvial processes operate, whereas in periods of low discharge the flow is complicated by a tidal component and a landward intrusion of the salt wedge. These hydraulic and morphological characteristics make the transitional zone different from the ‘pure’ fluvial and estuarine environment. Inspection of published and unpublished data from a number of outcrops of Recent and Tertiary depos

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Kiss, Tímea, György Sipos, and Róbert Vass. "Alluvial ridge development and structure: Case study on the Upper Tisza, Hungary." Geographica Pannonica 26, no. 3 (2022): 230–40. http://dx.doi.org/10.5937/gp26-38365.

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The juxtaposition of natural levees results in alluvial ridges with a unique fluvial record. Our aims were to (1) identify the alluvial ridges of the Upper Tisza (Hungary); (2) determine their morphological characteristics; and (3) reconstruct the Late Quaternary fluvial history of the region. The oldest paleo-meander was abandoned ca. 29 ka ago; referring to early avulsion of the Tisza. Five alluvial ridges were identified with intensive fluvial activity at ca. 12-13 ka, 7.7-8.6 ka, 6.1-6.6 ka, 4.8 and 2.9 ka ago. Moderate fluvial activity was indicated by early Atlantic and Subboreal paleoso

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Zhang, Qian, Mingming Tang, Shuangfang Lu, Xueping Liu, and Sichen Xiong. "Effects of Mud Supply and Hydrodynamic Conditions on the Sedimentary Distribution of Estuaries: Insights from Sediment Dynamic Numerical Simulation." Journal of Marine Science and Engineering 11, no. 1 (2023): 174. http://dx.doi.org/10.3390/jmse11010174.

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Estuaries are important sediment facies in the fluvial-to-marine transition zone, are strongly controlled by dynamic interactions of tides, waves, and fluvial flows, and show various changes in depositional processes and sediment distribution. Deep investigations on the sediment dynamic processes of the sand component of estuaries have been conducted; however, the understanding of how mud supply affects estuaries’ sedimentary characteristics and morphology is still in vague. Herein, the effects of mud concentration, mud transport properties, fluvial discharge, and tidal amplitude on the sedime

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20

Cong, Lin, Shi Zhong Ma, Yu Sun, and Ru Bin Li. "A Preliminary Study on Sedimentary Mode of Putaohua Oil Layer in the East of Sanzhao Depression." Advanced Materials Research 524-527 (May 2012): 3–9. http://dx.doi.org/10.4028/www.scientific.net/amr.524-527.3.

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Based on ten well cores, seventeen hundred logging data and initial potential data, sedimentary characteristics and mode of shallow lacustrine fluvial-dominated delta of Putaohua oil layer in the east of Sanzhao depression were analyzed. It is realized that distributary channel sandbodies as sand body framework of this delta system, which is abundant, closely and narrow, and the framework of sand body is in a large number of narrow banded shape (mostly 200 ~ 300m), and can extend hundreds of kilometers of continuous, dense, overall was SW, and combines well with other types sand surface to bec

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21

Sepulveda, Adam J., Warren T. Colyer, Winsor H. Lowe, and Mark R. Vinson. "Using nitrogen stable isotopes to detect long-distance movement in a threatened cutthroat trout (Oncorhynchus clarkii utah)." Canadian Journal of Fisheries and Aquatic Sciences 66, no. 4 (2009): 672–82. http://dx.doi.org/10.1139/f09-020.

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Interior cutthroat trout occupy small fractions of their historic ranges and existing populations often are relegated to headwater habitats. Conservation requires balancing protection for isolated genetically pure populations with restoration of migratory life histories by reconnecting corridors between headwater and mainstem habitats. Identification of alternative life history strategies within a population is critical to these efforts. We tested the application of nitrogen stable isotopes to discern fluvial from resident Bonneville cutthroat trout (BCT; Oncorhynchus clarkii utah ) in a headw

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Erkinaro, Jaakko, Eero Niemelä, Aila Saari, Yuri Shustov, and Lisbeth Jørgensen. "Timing of habitat shift by Atlantic salmon parr from fluvial to lacustrine habitat: analysis of age distribution, growth, and scale characteristics." Canadian Journal of Fisheries and Aquatic Sciences 55, no. 10 (1998): 2266–73. http://dx.doi.org/10.1139/f98-107.

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This study investigated the timing of a habitat shift from fluvial to lacustrine habitat of Atlantic salmon, Salmo salar, parr in a subarctic river in northern Finland and whether the individuals that shifted already had the best growth rate prior to the shift or, alternatively, whether the shift was triggered by competition-induced growth depression. The age distribution of parr indicated that most of the fish that shifted belonged to the age group 2+ and the proportion of 1+ fish was less than 3%. However, the analyses of somatic growth and scale characteristics reflected an earlier shift, a

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GUEDES, CARLOS C. F., ANDRE O. SAWAKUCHI, PAULO C. F. GIANNINI, REGINA DEWITT, and VITOR A. P. AGUIAR. "Luminescence characteristics of quartz from Brazilian sediments and constraints for OSL dating." Anais da Academia Brasileira de Ciências 85, no. 4 (2013): 1303–16. http://dx.doi.org/10.1590/0001-37652013104912.

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This study analyzes the optically stimulated luminescence (OSL) characteristics of quartz grains from fluvial, eolian and shallow marine sands of northeastern and southeastern Brazil, with especial focus on the applicability of the single-aliquot regenerative dose (SAR) dating protocol. All analyzed Brazilian sediments presented relatively high OSL sensitivity and good behavior regarding their luminescence characteristics relevant for radiation dose estimation. However, some samples from the Lençóis Maranhenses region in northeastern Brazil showed inadequate OSL sensitivity correction, hamperi

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Li, Jian-ping, Zi-ying Qiu, and Hong-yi Li. "Lithology and Lithofacies Characteristics of Deeply Buried Clastic Reservoirs in Alternating Wet-arid Climate and its Hydrocarbon Significance." Journal of Physics: Conference Series 2594, no. 1 (2023): 012039. http://dx.doi.org/10.1088/1742-6596/2594/1/012039.

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Abstract There have been series of HPHT (high temperature and high pressure) reservoirs with good quality and high productivity discovered in the Triassic Skagerrak Formation in the Central Graben of the UK North Sea. The bottlenecks for further E&P activity are the complicated depositional facies and high reservoir heterogeneity. The main reservoir space is a mixed porosity network composed of primary pores, micro-pores, secondary pores, secondary micro-pores and micro-fractures. Reservoirs of the Skagerrak Formation have greatly varied lateral connectivity as well as poor vertical connec

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Abdulkarim, Mubarak, Stoil Chapkanski, Damien Ertlen, et al. "Morpho-sedimentary characteristics of Holocene paleochannels in the Upper Rhine alluvial plain, France." E&G Quaternary Science Journal 71, no. 2 (2022): 191–212. http://dx.doi.org/10.5194/egqsj-71-191-2022.

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Abstract. The French Upper Rhine alluvial plain is characterized by a complex system of paleochannels inherited from Late Glacial to Holocene fluvial dynamics of the Rhine and Ill river systems, among other smaller rivers. These paleochannels represent valuable archives for understanding and reconstructing the fluvial and landscape evolution of the area. However, the Holocene temporal trajectories of the paleochannels, in response to a range of environmental changes, remain poorly understood. This study presents a detailed and systematic mapping and characterization of an extensive network of

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Hartley, A. J., G. S. Weissmann, G. J. Nichols, and G. L. Warwick. "Large Distributive Fluvial Systems: Characteristics, Distribution, and Controls on Development." Journal of Sedimentary Research 80, no. 2 (2010): 167–83. http://dx.doi.org/10.2110/jsr.2010.016.

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Lamouroux, Nicolas, Jean-Michel Olivier, Henri Persat, MarC PouilLy, YveS Souchon, and Bernhard Statzner. "Predicting community characteristics from habitat conditions: fluvial fish and hydraulics." Freshwater Biology 42, no. 2 (1999): 275–99. http://dx.doi.org/10.1046/j.1365-2427.1999.444498.x.

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Fongngern, Rattanaporn, Cornel Olariu, Ron Steel, David Mohrig, Csaba Krézsek, and Thomas Hess. "Subsurface and outcrop characteristics of fluvial‐dominated deep‐lacustrine clinoforms." Sedimentology 65, no. 5 (2018): 1447–81. http://dx.doi.org/10.1111/sed.12430.

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Li, Guofa, Jinliang Xiong, Hui Zhou, and Tongli Zhai. "Seismic reflection characteristics of fluvial sand and shale interbedded layers." Applied Geophysics 5, no. 3 (2008): 219–29. http://dx.doi.org/10.1007/s11770-008-0025-3.

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Walling, D. E., and P. W. Moorehead. "The particle size characteristics of fluvial suspended sediment: an overview." Hydrobiologia 176-177, no. 1 (1989): 125–49. http://dx.doi.org/10.1007/bf00026549.

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Cui, Kunning. "Characteristics of sedimentary system evolution and sequence stratigraphy boundary of Denglouku group in Xujiaweizi fault depression, Songliao Basin." IOP Conference Series: Earth and Environmental Science 1087, no. 1 (2022): 012073. http://dx.doi.org/10.1088/1755-1315/1087/1/012073.

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Abstract In the previous studies on this area, the sequence division is relatively rough. This study has improved the precision, and the Denglouku formation is divided into 10 fourth-order sequences, with the thickness of each small layer of about 70-80m. The characteristics of each small sequence boundary are described, and three third-order, four fourth-order sequence flooding surfaces are found. The stratigraphic framework is established. From bottom to top, the base level of all strata shows decline-rise-decline, which means regression-transformation-regression. The Denglouku 1st mainly in

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Santana, Camila Ignez, and Mônica Dos Santos Marçal. "Identificação de Estilos Fluviais na Bacia do Rio Macabu (RJ) a Serem Aplicados na Gestão dos Recursos Hídricos." Revista Brasileira de Geografia Física 13, no. 4 (2020): 1886. http://dx.doi.org/10.26848/rbgf.v13.4.p1886-1903.

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A pesquisa foi desenvolvida na Bacia do Rio Macabu que integra a Região Hidrográfica IX do Baixo Paraíba do Sul e Itabapoana e, assim como várias regiões hidrográficas fluminenses, apresenta longo histórico de intervenções antrópicas dentro e fora dos canais fluviais. O objetivo do trabalho é apresentar mapeamento dos Estilos Fluviais identificados na Bacia do rio Macabu, considerando-se a dinâmica atual dos processos geomorfológicos e hidrogeomorfológico a serem aplicados na gestão dos recursos hídricos. O mapeamento e classificação dos segmentos dos rios e suas tipologias foram realizados co

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Vandenberghe, Jef, Cornelis Kasse, Dragan Popov, et al. "Specifying the External Impact on Fluvial Lowland Evolution: The Last Glacial Tisza (Tisa) Catchment in Hungary and Serbia." Quaternary 1, no. 2 (2018): 14. http://dx.doi.org/10.3390/quat1020014.

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External impact on the development of fluvial systems is generally exerted by changes in sea level, climate and tectonic movements. In this study, it is shown that a regional to local differentiation of fluvial response may be caused by semi-direct effects of climate change and tectonic movement; for example, vegetation cover, frozen soil, snow cover and longitudinal gradient. Such semi-direct effects may be responsible for specific fluvial activity resulting in specific drainage patterns, sedimentation series and erosion–accumulation rates. These conclusions are exemplified by the study of th

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Alege, T. S., J. I. Omada, and K. Uchendu. "Field and Sedimentological Studies of Nataco-Banda Sediments of Lokoja Formation, Southern Bida Basin, Nigeria: Implication for Depositional Environment." Journal of Applied Sciences and Environmental Management 26, no. 11 (2022): 1835–42. http://dx.doi.org/10.4314/jasem.v26i11.15.

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The study area falls within the Lokoja Formation of the Southern Bida Basin. The objective of this study was to evaluate the field characteristics and sedimentological parameters of depositional environment of the Nataco-Banda Sediments of Lokoja Formation, Southern Bida Basin, Nigeria using appropriate techniques such as granulometric and pebble morphometric analysis. Field studies revealed a repeated alternating sequence of conglomeratic and pebbly to coarse-grained sandstone and overbank fine sediment that is indicative of a braided fluvial source while the presence of crossbedding is sugge

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Schwartz, Theresa M., Marieke Dechesne, and Kristine L. Zellman. "Evidence for variable precipitation and discharge from Upper Cretaceous–Paleogene fluvial deposits of the Raton Basin, Colorado–New Mexico, U.S.A." Journal of Sedimentary Research 91, no. 6 (2021): 571–94. http://dx.doi.org/10.2110/jsr.2020.081.

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ABSTRACT The Raton Basin of Colorado–New Mexico, USA, is the southeasternmost basin of the Laramide intraforeland province of North America. It hosts a thick succession (4.5 km or 15,000 ft) of Upper Cretaceous to Paleogene marine and continental strata that were deposited in response to the final regression of the Western Interior Seaway and the onset of Laramide intraforeland deformation. The Upper Cretaceous–Paleogene Raton and Poison Canyon formations were previously described as meandering river and braided river deposits that represented distal and proximal members of rivers that drained

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Vestena, Leandro Redin, and Alessandro Kominecki. "Hidrogeomorfologia em confluência fluvial obtusa, Guarapuava, Paraná." Revista Brasileira de Geografia Física 14, no. 4 (2021): 2131–48. http://dx.doi.org/10.26848/rbgf.v14.4.p2131-2148.

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Solid and liquid mixtures in river courses intensify in areas of river confluence, conditioned mainly by the angular opening of the junction. Knowledge of hydrosedimentological dynamics in bedrock junctions with different angular openings is essential for understanding morphological adjustment at confluences and for supporting actions for the preservation and conservation of river ecosystems. For this reason, this article presents the results of a hydrogeomorphologic study on a river confluence with an obtuse junction angle (>100º), in a plateau bedrock river, in the Serra Geral Formation.

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Liu, Yuming, Luxing Dou, Xiaoxu Ren, and Jiagen Hou. "Sedimentary characteristics of muddy deposits in sandy braided fluvial system: A case study from outcrops of the Jurassic Yungang Formation in the Datong Basin, Central China." Interpretation 8, no. 3 (2020): SM139—SM149. http://dx.doi.org/10.1190/int-2019-0174.1.

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The sandbodies within braided fluvial deposits are important reservoirs for the oil fields in China, and they usually have complex sedimentary architecture. A lot of research has been concentrated on characterizing the architecture of the sandbodies. Based on the observation that muddy deposits are commonly well preserved in fluvial deposits, we find that understanding the contact relationship between the muddy deposits and surrounding sand bodies can help characterize the depositional process of sandy braided fluvial systems. We have determined the effectiveness of this idea by characterizing

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Meyer, Patricia A., and Carolyn H. Eyles. "Nature and origin of sediments infilling poorly defined buried bedrock valleys adjacent to the Niagara Escarpment, southern Ontario, Canada." Canadian Journal of Earth Sciences 44, no. 1 (2007): 89–105. http://dx.doi.org/10.1139/e06-085.

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The buried Paleozoic bedrock surface of southern Ontario is dissected by an interconnected system of valleys. These buried valleys are infilled with thick successions of glacial, interglacial, and fluvial sediments that contain a lengthy record of changing environmental conditions during the late Quaternary. Detailed logging of over 500 m of sediment recovered from 11 continuously cored boreholes provides the basis for this study. The boreholes were drilled within two poorly defined bedrock valleys located east of the Niagara Escarpment in southern Ontario as part of a groundwater exploration

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Sun, Yu, Xiu Li Zhang, Jin Yan Zhang, and Chen Chen. "Analysis on Grain-Size Characteristics and Sedimentary Environment of Conglomerate Reservoirs in Ying-4 Section of Xingcheng Gas Field of Songliao Basin." Advanced Materials Research 734-737 (August 2013): 286–89. http://dx.doi.org/10.4028/www.scientific.net/amr.734-737.286.

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Aimed at difficulty of conglomerate in Ying-4 Section of Xingcheng Gas Field, Songliao Basin, which it is impossible to be carried out, using routine granularity analysis methods, and the iconic grain-size analysis is carried out. According to iconic two-dimension grain-size analysis, and contacting to fundamental sedimentary characteristics of conglomerate, sedimentary environment analysis is carried out. It is thought that this area is Shallow gravel-bed braided fluvial fan deltas, to braided fluvial delta transition, which supported an important geological foundation for the next dispositio

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Birchler, Justin, Courtney Harris, Christopher Sherwood, and Tara Kniskern. "Sediment Transport Model Including Short-Lived Radioisotopes: Model Description and Idealized Test Cases." Journal of Marine Science and Engineering 6, no. 4 (2018): 144. http://dx.doi.org/10.3390/jmse6040144.

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Geochronologies derived from sediment cores in coastal locations are often used to infer event bed characteristics such as deposit thicknesses and accumulation rates. Such studies commonly use naturally occurring, short-lived radioisotopes, such as Beryllium-7 (7Be) and Thorium-234 (234Th), to study depositional and post-depositional processes. These radioisotope activities, however, are not generally represented in sediment transport models that characterize coastal flood and storm deposition with grain size patterns and deposit thicknesses. We modified the Community Sediment Transport Modeli

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Wei, Jie, and Shaohua Li. "Application of Convolutional Neural Network in Quantifying Reservoir Channel Characteristics." Applied Sciences 14, no. 6 (2024): 2241. http://dx.doi.org/10.3390/app14062241.

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After many years of exploitation in the petroleum field, most of the oil fields are in advanced stages of development, with a strong non-homogeneity of the reservoir, more residual oil, and low recovery efficiency. Therefore, research on various methods has been carried out by scholars to improve the rate of recovery and to understand the distribution pattern of residual oil in reservoirs. Among the whole clastic reservoirs, fluvial reservoirs occupy a large proportion, so fluvial reservoirs will be the priority for future reservoir research in China. The key to the fine characterization of fl

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Wang, Yang Jun, Tai Ju Yin, and Zhi Hao Deng. "A Study on the Evolution of Distributary Channels in River-Dominated Deltas Using Numerical Simulations of Hydrodynamic Behaviors." Applied Mechanics and Materials 744-746 (March 2015): 1050–55. http://dx.doi.org/10.4028/www.scientific.net/amm.744-746.1050.

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The Fluvial-dominated delta is one of the extremely important deposition systems in oil and gas exploration. In this paper, the three-dimensional numerical simulation of hydrodynamics has been applied to the precise analysis of the formation of fluvial-dominated deltas and the evolution of their distributary channels. The model has been created using the Delft3D program, and the conditions of the numerical model have been set according to the hydrodynamic characteristics of modern rivers and deltas. The calculation field was 20.5 km in length by 10 km in width. With the Mor-Factor set to 60, t

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TSUJIMOTO, Tetsuro, Toshiharu OKADA, and Takashi MURASE. "Vegetation and River-Morphological Characteristics in a River in Fluvial Fan." PROCEEDINGS OF HYDRAULIC ENGINEERING 37 (1993): 207–14. http://dx.doi.org/10.2208/prohe.37.207.

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Nagy-László, Zsolt, Judit Padisák, Gábor Borics, András Abonyi, Viktória B-Béres, and Gábor Várbíró. "Analysis of niche characteristics of phytoplankton functional groups in fluvial ecosystems." Journal of Plankton Research 42, no. 3 (2020): 355–67. http://dx.doi.org/10.1093/plankt/fbaa020.

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Abstract Assigning species to functional response groups in phytoplankton ecology reduces the number of functional units, which helps understand the processes that shape diversity and functioning of planktonic assemblages. Although the concept has become widespread in recent years, numerical characterization of the groups’ positions in the niche space remained a challenging task. Using a large river phytoplankton dataset, we characterized the functional groups (FGs) of phytoplankton by their niche position and niche breadth in the niche space defined by the relevant environmental variables usi

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Lv, Yingbo, Yifei Liang, and HongXue Wang. "Research on variogram analysis method for 3D modeling of sandstone reservoir." E3S Web of Conferences 416 (2023): 01018. http://dx.doi.org/10.1051/e3sconf/202341601018.

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Analysis of variogram is a necessary step in 3D stochastic modeling, and different settings of variograms can directly affect the final distribution of model attribute. How to optimize the setting of variogram parameters by unit and facies type has become a key step in geological modeling. This article focuses on the reservoir within sedimentary background of fluvial-deltas in the layer SII7+8 which develops multiple sedimentary microfacies, such as fluvial channels, abandoned fluvial channels, flood plains, and natural levee with strong heterogeneity, so as to study the impact of changes of t

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Wei, Xing, Jinlong Zhou, Yinzhu Zhou, Yanyan Zeng, and Yunfei Chen. "Hydrochemistry and Environmental Isotope Characteristics of Groundwater in the Kashgar Delta Area, Xinjiang, China." E3S Web of Conferences 98 (2019): 09032. http://dx.doi.org/10.1051/e3sconf/20199809032.

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The hydrochemistry and isotope characteristics of groundwater of different geomorphological types in the Kashgar Delta in Xinjiang, China were studied using isotopic analyses. Results showed that groundwater in the study area was mainly recharged by precipitation, and that groundwater ions were mainly affected by weathering-leaching of rock salt and evaporite as well as cation exchange and adsorption. The hydrochemical type of phreatic water in the alluvial-proluvial gravel plain on the piedmont slope was mainly SO4·Cl-Na·Ca type, with an average age of 28a. The phreatic water in the fluvial p

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Kale, Vishwas S. "Fluvial geomorphology of Indian rivers: an overview." Progress in Physical Geography: Earth and Environment 26, no. 3 (2002): 400–433. http://dx.doi.org/10.1191/0309133302pp343ra.

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The rivers of India reveal certain special characteristics because they undergo large seasonal fluctuations in flow and sediment load. The rivers are adjusted to an array of discharges, and most rivers exhibit morphologies that are related to high-magnitude floods. In the last 100 years primarily hydraulic engineers have contributed to the understanding of the fluvial forms and processes. Though this trend has continued even today, in recent decades some interesting fluvial research has also been carried out by earth scientists. Four large rivers, namely Brahmaputra, Kosi, Indus and Narmada, h

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Carranza-Edwards, Arturo, Leticia Rosales-Hoz, and Susana Santiago-Pérez. "Provenance memories and maturity of holocene sands in northwest Mexico." Canadian Journal of Earth Sciences 31, no. 10 (1994): 1550–56. http://dx.doi.org/10.1139/e94-137.

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Beach and fluvial sediments from the region around Todos Santos Bay, Baja California, have been studied to determine their maturity, provenance, chemical alteration, and tectonic relationships. Analysis of the CaO–Na2O–K2O content of several samples demonstrated a difference between those from a beach environment and those from a fluvial environment. Transport affects the characteristics of the sediment, producing an enrichment of material resistant to chemical and physical attack on the beach area. The beach sand samples are mineralogically and chemically more mature than those from the fluvi

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Fambrini, Gelson Luís, Diego da Cunha Silvestre, José Acioli Bezerra de Menezes-Filho, Ian Cavalcanti da Costa, and Virgínio Henrique de Miranda Lopes Neumann. "Architectural and facies characterization of the Aptian fluvial Barbalha Formation, Araripe Basin, NE Brazil." Geological Society, London, Special Publications 488, no. 1 (2019): 119–50. http://dx.doi.org/10.1144/sp488-2017-275.

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AbstractThe Aptian Barbalha Formation records the beginning of the post-rift stage of the Araripe Basin. It consists predominantly of sandstones and mudstones interbedded with thin layers of bituminous black shales and conglomerates. The depositional and architectural features of the alluvial succession of the Barbalha Formation were characterized by detailed study and descriptions of the selected outcrops and analysis of well core data. In this study, two main depositional sequences were identified. The lower depositional sequence is more than 100 m thick and comprises a vertical facies succe

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Zhang, Yong Qing, Shi Zhong Ma, Yu Sun, and Jin Yan Zhang. "Sedimentary Characteristics of Fuyu Oil Layer in the Southern Fuxin Uplift of Songliao Basin." Advanced Materials Research 868 (December 2013): 164–67. http://dx.doi.org/10.4028/www.scientific.net/amr.868.164.

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Based on 22 well cores and logging data of nearly 800 well, sedimentary characteristics of Fuyu oil layer in the southern Fuxin uplift was analyzed. It is shown that types of sandstone in the Fuyu oil layer are main feldspathic litharenite, debris arkose and minor litharenite. Granularity probability curve is displayed as a typical of two-stage or three-stage. A large number of parallel bedding, one-way oblique bedding, small-scale cross bedding, the bottom scour structure and syngenetic deformation structure can be seen in the Fuyu oil layer. Mudstone color is main fuchsia, grey purple massiv

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