Coseismic spring flow changes associated with the 1995 Kobe earthquake

被引：60

作者：

Sato, T

Sakai, R

Furuya, K

Kodama, T

机构：

[1] Geol Survey Japan, Earthquake Res Dept, Tsukuba, Ibaraki 3058567, Japan

[2] Tono Geosci Ctr, Gifu, Japan

[3] Sato Kogyo Co Ltd, Chuo Ku, Tokyo 1030023, Japan

来源：

GEOPHYSICAL RESEARCH LETTERS | 2000年 / 27卷 / 08期

关键词：

D O I：

10.1029/1999GL011187

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Flow rate in many springs increased rapidly after the 1995 Kobe earthquake, which is likely caused by permeability enhancement. The flow rates at nine springs on Awaji Island near Kobe from 1995 to 1998 reveals that the enhancement of how rate gradually decreased exponentially within two years. The enhanced hydraulic diffusivity of the aquifer is estimated at from 130 to 2,300 cm(2)/s by using a very simple diffusional model. About seven-fold increase in spring flow rate and permeability due to the earthquake is inferred from the analysis.

引用

页码：1219 / 1222

页数：4

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