TEM investigations of aquifers in the southwest coast of Taiwan

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题名:	TEM investigations of aquifers in the southwest coast of Taiwan
作者:	Chen,CS
贡献者:	地球物理研究所
关键词:	GROUNDWATER
日期:	1999
上传时间:	2010-06-29 18:41:27 (UTC+8)
出版者:	中央大學
摘要:	A large data set of more than 330 transient electromagnetic (TEM) soundings was collected in the southwest coast of Taiwan, The aims of the study were (1) to define the shallow geoelectrical structure, and (2) locate large bodies of ground water by integrating electrical anomalies and data from more than 140 wells, A one-dimensional, smooth-model inversion of TEM data was used, and trend surface analysis of those results was employed to refine the results for interpretation, A resistive zone (15 to 160 ohm-m resistivity) at elevations 20 to 120 m below sea level in the northern part of the survey area is interpreted as fresh water saturated sand or gravel, The southern part has extremely low resistivity, less than 1 ohm-m, indicating a widespread sea water intrusion. The divide between these two parts is located at about the middle of the study area. This study demonstrates that TEM investigation can help resolve ambiguities, even in an area with many wells, and thereby increase the likelihood of success in ground water exploration.
關聯:	GROUND WATER
显示于类别:	[地球物理研究所] 期刊論文

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