Trace elements and environmental isotopes as tracers of surface water–groundwater interaction: a case study at Xin’an karst water system, Shanxi Province, Northern China

2009 ◽  
Vol 59 (6) ◽  
pp. 1223-1234 ◽  
Author(s):  
Xubo Gao ◽  
Yanxin Wang ◽  
Penglin Wu ◽  
Qinghai Guo
Keyword(s):  
Trace Elements ◽  
Surface Water ◽  
Water System ◽  
Environmental Isotopes ◽  
Northern China ◽  
Shanxi Province ◽  
Karst Water

Identification of Double-layered Water-filled Zones Using TEM: A Case Study in China

2018 ◽  
Vol 23 (3) ◽  
pp. 297-304
Author(s):  
Guoqiang Xue ◽  
Dongyang Hou ◽  
Weizhong Qiu
Keyword(s):  
Field Survey ◽  
Coal Mines ◽  
Northern China ◽  
Shanxi Province ◽  
Well Drilling ◽  
Borehole Logging ◽  
Transient Electromagnetic ◽  
Geophysical Technique ◽  
Instrument Sensitivity

At present in China, the use of the transient electromagnetic method (TEM) is emerging as a leading geophysical technique for exploration of water-filled zones in coal mines. These zones are more conductive than the host coal and are easy targets to map. However, there is a growing interest for the investigations of double-layered or multi-layered mined-out zones. Therefore, it is necessary to study the feasibility of TEM's abilities to detect double-layered, water-filled voids. In this study, the basic hydrogeological conditions of a survey area, located in the northern China, are described. The corresponding geophysical models of the single- and double-layered water-filled zones are developed from borehole logging data. Then, forward calculations of different models are carried out with 1D numerical simulations. The modeling results show that it is feasible for TEM to identify these types of targets under certain conditions, including instrument sensitivity, low resistivity for the water-filled zones, and shallower depths. Moreover, the field survey for locating double-layered water-filled zones in coal mines in the Datong region of Shanxi Province is verified by well drilling.

Sources and pollution path identification of PAHs in karst aquifers: an example from Liulin karst water system, northern China

2021 ◽  
Vol 241 ◽  
pp. 103810
Author(s):  
Xiao Wu ◽  
Xubo Gao ◽  
Ting Tan ◽  
Chengcheng Li ◽  
Ruyao Yan ◽  
...  
Keyword(s):  
Water System ◽  
Northern China ◽  
Karst Water ◽  
Karst Aquifers

Dynamic evolution of karst water levels and its controlling and influencing factors in Northern China: a case study in the Dawu water source area

2020 ◽  
Vol 35 (2) ◽  
Author(s):  
Zongjun Gao ◽  
Hongying Zhang ◽  
Jianguo Feng ◽  
Tongmin Lu ◽  
Lizhi Yang ◽  
...  
Keyword(s):  
Influencing Factors ◽  
Source Area ◽  
Water Source ◽  
Northern China ◽  
Water Levels ◽  
Dynamic Evolution ◽  
Karst Water
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