Changes in hydrogeological properties of the River Choushui alluvial fan aquifer due to the 1999 Chi-Chi earthquake, Taiwan

被引：0
作者：
Cheng-Shin Jang
Chen-Wuing Liu
Yeeping Chia
Li-Hsin Cheng
You-Ching Chen
机构：
[1] Kainan University,Department of Leisure and Recreation Management
[2] National Taiwan University,Department of Bioenvironmental Systems Engineering
[3] National Taiwan University,Department of Geosciences
[4] Fooyin University,Department of Occupational Safety and Hygiene
来源：
Hydrogeology Journal | 2008年 / 16卷 / 2期
关键词：
Taiwan; Earthquake; Pumping test; Transmissivity; Storage coefficient;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Changes in hydrogeological properties of the River Choushui alluvial fan aquifer before and after the 1999 Chi-Chi earthquake, Taiwan, have been identified using pumping tests. Three wells, SH2, YL2 and SC2, located in a compressional zone with high coseismic groundwater levels, were tested. The threshold of the aquifer deformation with respect to transmissivity (T) is greater than that with respect to storage coefficient (S). Decreases in the post-earthquake S are approximately 60% at SH2 and SC2, indicating aquifer compression after the Chi-Chi earthquake. Changes in the post-earthquake T range from 61% increase to 0.8% decrease. Moreover, results from anisotropy analysis of T at SC2 further illustrate that normal stresses induced by the Chi-Chi earthquake have consolidated soil particles. Soil particles dilated laterally after the earthquake, resulting in an increase of the equivalent T. The changes in hydrogeological properties have a considerable influence on spatiotemporal fluid pressure and horizontal groundwater movement, resulting in different amounts of drawdown during post-earthquake pumping.
引用
收藏
页码：389 / 397
页数：8
相关论文
共 34 条
[1]  
Chia YP(2001)Changes of groundwater level due to the 1999 Chi-Chi earthquake in the Choshui River alluvial fan in Taiwan Bull Seismol Soc Am 91 1062-1068
[2]  
Wang YS(1946)A generalized graphical method for evaluation formation constants and summarizing well-field history Trans Am Geophys Union 27 243-256
[3]  
Chiu JJ(2005)On estimating the earthquake-induced changes in hydrogeological properties of the Choshuishi Alluvial Fan, Taiwan Hydrogeol J 13 467-480
[4]  
Liu CW(2004)A viscoelastic model for groundwater level changes in the Cho-Shui River alluvial fan after the Chi-Chi earthquake in Taiwan Water Resour Res 40 W04213-2049
[5]  
Cooper HH(2003)Streamflow and water well responses to earthquakes Science 300 2047-195
[6]  
Jacob CE(1996)Poroelastic techniques in the study of earthquake-related hydrologic phenomena Adv Geophys 37 135-229
[7]  
Hsu KC(1999)Modeling of earthquake-induced hydrological changes and possible permeability enhancement due to the 17 January 1995 Kobe earthquake, Japan J Hydrol 223 221-834
[8]  
Tung CC(2001)Coseismic hydrologic response of an alluvial fan to the 1999 Chi-Chi earthquake, Taiwan Geology 29 831-1012
[9]  
Lin YB(2001)Preseismic deformation and coseismic displacements associated with the 1999 Chi-Chi, Taiwan, earthquake Bull Seismol Soc Am 91 995-undefined
[10]  
Tan YC(undefined)undefined undefined undefined undefined-undefined
1234