TY  - JOUR
ID  - epos1466
UR  - http://dx.doi.org/10.1029/2002GL016694
IS  - 7
A1  - Chadha, Rajender Kumar
A1  - Pandey, Prabha
A1  - Kuempel, Hans Joachim
Y1  - 2003/04//
N2  - Four cases of coseismic changes are observed in water
levels recorded at a close network of wells around
seismically active Koyna-Warna region in western India
during 1997?2000. While coseismic increase of 2?7 cm in
water levels is observed for earthquakes of M 4.3?4.7 in
three cases, a trough like decrease of 0.4?8 cm is observed
at 7 wells for an M 5.2 earthquake. All these earthquakes
occurred within the network of wells drilled for the study.
Our results suggest that decrease in water levels prior to
these earthquakes may be premonitory in nature. We show
that magnitude of the earthquake and epicentral distance are
two vital parameters to record anomalous changes. In our
study local earthquakes of M ? 4.3 are recorded at a
maximum distance of about 24 km. Our studies provide first
observations from a unique experiment in India, which will
have implications in developing earthquake prediction
models. INDEX TERMS: 7230 Seismology: Seismicity and
seismotectonics; 7223 Seismology: Seismic hazard assessment and
prediction; 1899 Hydrology: General or miscellaneous.
Citation: Chadha, R. K., A. P. Pandey, and H. J. Kuempel,
Search for earthquake precursors in well water levels in a
localized seismically active area of Reservoir Triggered
Earthquakes in India, Geophys. Res. Lett., 30(7), 1416,
PB  - American Geophysical Union
JF  - Geophysical Research Letters
VL  - 30
SN  - 0094-8276
TI  - Search for earthquake precursors in well water levels in a localized seismically active area of Reservoir Triggered Earthquakes in India
SP  - 1416
AV  - none
EP  - 1422
ER  -