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groundwater resources survey of tongchuan city using the audio magnetotelluric method

Applied Geophysics 2020年第5期17卷 660-671,900页

作者： Xu Zhi-min Tang Jing-tian Li Guang Xin Hui-Cui Xu Zhang-jian Tan Xin-ping LI Jin Heibei Instrument&Meter Engineering Technology Research Center Chengde Petroleum CollegeChengde 067000China School of Geosciences and Info-Physics Central South UniversityChangsha 410083China Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring Ministry of Education(Central South University)Changsha 410083China Northwest Research Institution of Engineering Investigations and Design Xi’an 710003China School of Geophysics and Measurement-control Technology Nanchang 330013China College of Information Science and Engineering Hunan Normal UniversityChangsha 410081China

The development of Tongchuan City,Shaanxi Province,located in the northwestern region of China,is restricted by water *** direct current resistivity and induced polarization sounding methods are typically applied in finding urban *** methods,however,are not effective due to their complicated topography and geological *** application practice shows that the audio magnetotelluric(AMT)method has a large depth of exploration,high work effi ciency,and high lateral *** investigate the distribution of groundwater resources,we deployed three audio-frequency magnetotelluric profiles in the city *** impedance tensor information of AMT data is obtained using *** data dimension analysis reveals that the two-dimensional structural features of the observation area are *** main structure of the observation area is about 45°northeast,as indicated by structural trend analysis.A shallow two-dimensional electrical profile of 1 km in Tongchuan City is obtained by two-dimensional nonlinear conjugate gradient ***,combined with regional geological information,the geological structure characteristics reflected by the electrical profile were obtained along with the detailed characteristics of water-rich structures in the *** infl uence of the structure on the groundwater distribution was analyzed,and the water-rich areas were identifi *** work contributes to the prospective development of Tongchuan City.

关键词： urban geology audio magnetotelluric sounding method electrical structure groundwater resources

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Assessment of surface and subsurface waterlogging, water level fluctuations, and lithological variations for evaluating groundwater resources in Ganga Plains

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International Journal of Digital Earth 2013年第3期6卷 276-296页

作者： Arvind Chandra Pandey Suraj Kumar Singh M.S.Nathawat Dipankar Saha Department of Remote Sensing Birla Institute of TechnologyMesraRanchiIndia Central Ground Water Board Ministry of Water ResourcesPatnaIndia

In the present study,the multi-temporal satellite images of IRS P6 LISS III were used to map waterlogging dynamics over different *** area of 594.36 km2(6.75%)and 4.17 km^(2)(0.04%)was affected by surface waterlogging during pre and postmonsoon season,*** average annual groundwater level fluctuations were calculated using 18 years(1990-2007)pre and postmonsoon groundwater level data to identify the areas which are under groundwater induced waterlogging *** soil map clearly indicates that salinity and sodicity exhibit the highest severity and occur in areas with shallow groundwater *** hydrogeomorphical units mapped using IRS P6 LISS III satellite images are flood plain,alluvial plain,paleochannels,and oxbow *** study revealed that 44.65%areas have very good to excellent groundwater *** litholog data clearly indicate an alternating sequence of clay and sand in which deep aquifers made up of coarse sand would be best suited for adequate water supply and good groundwater *** integrated study utilizing digital spatial data pertaining to waterlogging,soil salinity,water level fluctuation,and lithological variation proved that planning of any surface and subsurface water resources development activity should be taken up after assessments of said parameters.

关键词： waterlogging salinity Ganga plain digital earth groundwater resources digital data

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THE IMPACT OF HUMAN ACTIVITIES ON groundwater resources IN THE SOUTH EDGE OF TARIM BASIN, XINJIANG

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Chinese Geographical Science 2002年第1期12卷 50-54页

作者： MAJin－zhu LAITian－wen 等 Collegeofresources＆Environment LanzhouUniversityLanzhou730000P.R.China SchoolofCivilConstruction LanzouRailwayUniversityLanzhou730070P.R.China

In the modern times, the population growth, development of industrial andagricultural production and the petroleum exploitation, brought about the unceasing expansion ofartificial oasis and abrupt increase of water demand. The artificial hydraulic irrigationengineering took the place of the natural river system, the reservoirs took the place of naturallakes, which in turn enhanced the space-time redistribution of surface water based on the naturalevolution, and so did groundwater: The groundwater recharge reduced 26. 2% in 46 years from 1950 to1995 in the southern piedmont flood plain of Tarim Basin due to mean yearly population increase rateof 27. 7 per thousand and associated with the water use rate increasing from 24. 6% to 58. 4%. Atthe same time the artificial water system seepage give primary play to groundwater recharge, whichis up to 57. 6% whilst that of the natural system reduce to 33.7%. As a result, groundwater leveldrop 3 - 5m widespread except some irrigation area and surroundings of plain reservoir. Spring waterdischarge also reduce about 37. 6% and discharge zone continuously move away to the north with thevalue of 0. 5 - 1. 2km in the past 40 years.

关键词： human activities groundwater resources recharge tarim basin

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Climate change and groundwater resources in Thailand

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Journal of groundwater Science and Engineering 2017年第1期5卷 67-75页

作者： SRISUK Kriengsak NETTASANA Tussanee groundwater Research Center Faculty of Technology Khon Kaen University Department of groundwater resources Ministry of Natural Resources and Environment

The average temperature of Thailand is projected to increase by 2-3 °C, and the annual rainfall is projected to increase by 25% and up to 50% in certain areas. The climate change in future is expected to provide changes in hydrological cycle and therefore impacts the groundwater resources too. In this study, we analyzed the general climate change trends and reviewed the groundwater conditions of Thailand. The climate changes, hydrologic variability and the impact of climate change on groundwater sustainability are also discussed based on a national groundwater monitoring program. Currently, there are 864 groundwater monitoring stations and 1 524 monitoring wells installed in Thailand. Moreover, the impact of climate change on groundwater-dependent systems and sectors is also discussed according to certain case studies, such as saline water intrusion in coastal and inland areas. Managing aquifer recharge and other projects are examples of groundwater adaptation project for the future.

关键词： Climate change Hydrologic variability groundwater resources groundwater sustainability Thailand

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Exploitation of groundwater resources and protection of wetland in the Yuqia Basin

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Journal of groundwater Science and Engineering 2017年第3期5卷 222-234页

作者： ZHANG Chun-chao LI Xiang-quan GAO Ming HOU Xin-wei LIU Ling-xia WANG Zhen-xing MA Jian-fei Institute of Hydrogeology and Environmental Geology Shijiazhuang 050061 China

In Yuqia Basin, the climate is arid and the ecologic environment is fragile, and shortage of water resources has seriously restricted the sustainable development of local economy. In order to meet the needs of industrial and domestic water in the Yuqia Basin, numerical simulation was used to evaluate the groundwater resources and potential for exploitation. The results showed that the mathematical model and calculation parameters used were mainly in accordance with practical situation. The calculated value of the underground water level is consistent with measured value during the period of identification and validation. The total recharge of groundwater resources was 22.02×10~4 m^3/d, and the total drainage was 21.95×10~4 m^3/d at present. The Yuqia River leakage is the main supply source of groundwater. There is no significant effect on area of wetland when water source place exploited by 2.5×10~4 m^3/d at alluvial-diluvial fan of Yuqia River. After long-term exploitation, the spring flow reduces from 1.42×10~4 m^3/d to 1.01×10~4 m^3/d and wetland area reduces by 32.7% of original area. The calculation of water balance shows that it is safe to the Yuqia Basin, Da Qiadam Lake, the Mahai Basin at downstream of Yuqia River and wetland under the condition of water source place exploited by 2.5×10~4 m^3/d.

关键词： Yuqia Basin groundwater resources Numerical simulation Water source Wetland

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THE groundwater resources AND ITSSUSTAINABLE DEVELOPMENTIN THE SOUTH EDGE OF TARIM BASIN

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Chinese Geographical Science 2001年第1期11卷 57-62页

作者： MA Jin-zhu, LI Ji-jun (College of resources & Environment, Lanzhou University, Lanzhou 730000, P. R. China) College of resources & Environment Lanzhou University Lanzhou P. R. China

There is a potential to certain extend for groundwater development in the piedmont plain in south edge of Tarim Basin. If the surface water use keeps the scale as present, the maximum safe yield of groundwater is about 2.05 × 109m3/a that is 55.8% of the recharge. Thus the evapotranspiration discharge will reduce 60.4%, while spring water reducing 35.6%. If the surface water use rate is up to 80% and coefficient of canal water use increase to 0.55 in the future, the maximum safe yield of groundwater will reduce to 1.85 × 109m3/a with the recharge reducing to 3.1 × 109m3. However, the sustainable groundwater development is depended on the protection of the quality aspect linked with the quantity aspect. In particular, protection of the glaoier and water conservation forestry in the Kunlun Mountains and coordinating development of surface water and groundwater should be taken seriously. Besides, the legislation, administrative management and the technology construction, and ability construction are also critical important and necessary.

关键词： groundwater resources sustainable development safe yield Tarim Basin

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Changes in groundwater resources and their influencing factors in Songnen Plain, China

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地下水科学与工程:英文版 2023年第3期11卷 207-220页

作者： Qiang Liu Xiao-dong Guo Chang-qi Wang Nan Lin Hui-rong Zhang Lin Chen Yan Zhang Shenyang Geological Survey Center China Geological SurveyShenyang 110034China Jilin University of Architecture Changchun 130119China Liaoning Institute of Geology and Mineral Research Co LtdShenyang 110032China

The Songnen Plain is a crucial agricultural area in China,and in the past 20 years,a large number of dry fields have been developed into paddy fields in order to improve land output *** a result,the effective irrigation area of agriculture has increased annually,and the conversion mode and quantity between surface water and groundwater have changed *** is essential to identify the changes in groundwater resources and their influencing factors for the sustainable development of economy and *** study evaluates groundwater resources in the Songnen Plain using the water balance method based on meteorological,hydrological and groundwater monitoring data from 2000 to *** results 3 show that the groundwater resources in the region amount to 15.945 billion m with precipitation infiltration being the most important component,accounting for 73.09%,which is followed surface water irrigation infiltration and river and ditch infiltration,constituting 14.55%and 10.32%,*** factors influence groundwater resources in different *** to 1985,the increase of surface water irrigation infiltration is the primary factor responsible for the increase of groundwater resources,while other recharge sources have decreased during the same *** to 2005,all groundwater resources have increased,with the increase of surface water irrigation infiltration and river channel infiltration being the primary factors.

关键词： Songnen Plain groundwater resources Precipitation Irrigation Infiltration

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Risk Analysis on groundwater resources Carrying Capacity Based on Blind Number Theory

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Wuhan University Journal of Natural Sciences 2007年第4期12卷 669-676页

作者： ZHANG Ji1,2,YU Sujun31. Key Laboratory of Mountain Hazards and Surface Process,Chinese Academy of Sciences/Institute of Mountain Hazards and Environment,Chinese Academy of Sciences,Chengdu 610041,Sichuan,China 2. Graduate University of the Chinese Academy of Sciences,Beijing 100049,China 3. School of Environmental Science and Engineering,Southwest Jiaotong University,Chengdu 610041,Sichuan,China Key Laboratory of Mountain Hazards and Surface Process Chinese Academy of Sciences/Institute of Mountain Hazards and Environment Chinese Academy of Sciences Chengdu 610041 Sichuan China

Blind numbers of evaluation indices about groundwater resources carrying capacity are defined from the concomitancy of randomness, fuzziness, grey property and unascertainment of groundwater system. Based on fuzzy theory, a comprehensive evaluation model on groundwater resources carrying capacity is constructed with blind information. Then a risk assessment model of surcharge about groundwater resources carrying capacity is established on blind reliability theory. The probable value ＂＊＂ matrix of fuzzy membership degree about carrying capacity corresponding to each judgment level can be obtained with the aid of blind algorithm as well as the subjective reliability ＂×＂ matrix. And then a graph of ＂groundwater carrying capacity v.s. accumulative reliability＂ can be gained Based on the graph, fuzzy membership degree of groundwater resources carrying capacity to each judgment level under different risk probability can be got. Thus, a comparatively reasonable judgment to groundwater resources carrying capacity might be obtained, with comprehensive analysis to the state of society, economy technology and ecology.

关键词： blind number theory groundwater resources carrying capacity evaluation risk analysis

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Dynamic evaluation of groundwater resources in Zhangye Basin

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Research in Cold and Arid Regions 2016年第3期8卷 250-262页

作者： LiNa Mi HongLang Xiao ZhengLiang Yin ShengChun Xiao Key Laboratory of Ecohydrology of Inland River Basin Cold and Arid Regions Environmental and Engineering Research InstituteChinese Academy of Sciences/Heihe Key Laboratory of Ecohydrology and Integrated River Basin ScienceLanzhouGansu 730000China University of Chinese Academy of Sciences Beijing 100049China

groundwater resource is vital to the sustainable development of socio-economics in arid and semi-arid regions of Northwest China. An estimation of the groundwater resources variation in Zhangye Basin was made during 1985-2013 based on long-term groundwater observation data and geostatistical method. The results show that from 1985 to 2013, groundwater storage exhibited tremendous dissimilarity on temporal and spatial scale for the whole Zhangye Basin, especially before and after implementation of the water diversion policy. Trend of groundwater storage varied from quick to slow decline or increase. The accumulative groundwater storage decreased nearly 47.52~ 108 m3, and annual average depletion rate reached 1.64x 108 m3/a. Among which, the accumulative groundwater storage of the river and well water mixed irrigation district decreased by 37.48x 108 m3, accounting for about 78.87% of the total groundwater depletion of the Zhangye Basin. Accumulative depletion of groundwater storage varied in respective irrigation districts. Though groundwater resources depletion rate slowed down from 2005, the overall storage in the whole basin and re- spective districts during 1985-2013 was still in a severe deficit such that, the groundwater resource was in a rather negative balance, which could threaten the local aquifer. This is the joint effect of climate change and human activities, however human activities, such as water diversion policy and groundwater exploitation, became increasingly intense. Our research results could provide a reasonable estimation for the groundwater balance in Zhangye Basin, providing a scientific basis for water resources unified planning and, this method can provide a relatively reliable way of estimation for large scale groundwater resources.

关键词： groundwater resources dynamic evaluation grotmdwater storage Zhangye Basin

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Stratigraphic Data and groundwater resources in the Coastal Sedimentary Basin of the Pointe-Noire Region (Republic of Congo)

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Journal of Water Resource and Protection 2020年第12期12卷 1019-1033页

作者： Guy Dieudonne Moukandi N’Kaya Louis Okotaka Ebale Christian Tathy Jean De Dieu Nzila Jean Luc Mouthou Bernard Mabiala LMEI/CUSI/Ecole Nationale Supérieure Polytechnique Marien Ngouabi University Brazzaville Congo LARGEN/Ecole Normale Supérieure Marien Ngouabi University Brazzaville Congo Faculté des Lettres et des Sciences Humaines Département de Géographie Université Marien Ngouabi Brazzaville Congo

The synthesis of geological and petroleum research undertaken in the coastal Sedimentary Basin of the Pointe-Noire region enabled the establishment of a lithostratigraphic scale. It has been observed that the order in which the series observed in outcrop and those encountered by deep wells succeed each other has allowed a value to be given to this relative scale. The study area corresponds to a longitudinal tectonic accident, fault or flexure. It belongs to the Cretaceous and Tertiary coastal sedimentary basin covered by the Plio-Pleistocene age formations (series of circuses), formed of highly permeable sands comprising multiple resistant horizons that store large bodies of water whose reserves are considered very important. Hydrographic network is composed of four main basins with a mediocre size. The quality of this groundwater is considered to be satisfactory for household consumption, but the sustainable management of these reserves requires constant checks on their quality as well as on the level of the reserves. All these resources put the agglomeration of Pointe-Noire close to large exploitable water reserves that meet the need for drinking water, even if, on the whole, the agglomeration is still experiencing many difficulties in terms of its drinking water supply.

关键词： Geological Stratigraphic Scale groundwater resources Coastal Aquifers Sedimentary Basin Pointe-Noire

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