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Book Chapter

Investigations of continued reservoir triggered seismicity at Koyna, India

By
Harsh K. Gupta
Harsh K. Gupta
CSIR, National Geophysical Research Institute, Hyderabad, India
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Kusumita Arora
Kusumita Arora
CSIR, National Geophysical Research Institute, Hyderabad, India
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N. Purnachandra Rao
N. Purnachandra Rao
CSIR, National Geophysical Research Institute, Hyderabad, India
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Sukanta Roy
Sukanta Roy
Borehole Geophysical Research Laboratory, Maharashtra, India
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V. M. Tiwari
V. M. Tiwari
CSIR, National Geophysical Research Institute, Hyderabad, India
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Prasanta K. Patro
Prasanta K. Patro
CSIR, National Geophysical Research Institute, Hyderabad, India
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H. V. S. Satyanarayana
H. V. S. Satyanarayana
CSIR, National Geophysical Research Institute, Hyderabad, India
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D. Shashidhar
D. Shashidhar
CSIR, National Geophysical Research Institute, Hyderabad, India
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C. R. Mahato
C. R. Mahato
CSIR, National Geophysical Research Institute, Hyderabad, India
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K. N. S. S. S. Srinivas
K. N. S. S. S. Srinivas
CSIR, National Geophysical Research Institute, Hyderabad, India
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M. Srihari
M. Srihari
CSIR, National Geophysical Research Institute, Hyderabad, India
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N. Satyavani
N. Satyavani
CSIR, National Geophysical Research Institute, Hyderabad, India
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Y. Srinu
Y. Srinu
CSIR, National Geophysical Research Institute, Hyderabad, India
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D. Gopinadh
D. Gopinadh
CSIR, National Geophysical Research Institute, Hyderabad, India
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Haris Raza
Haris Raza
CSIR, National Geophysical Research Institute, Hyderabad, India
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Monikuntala Jana
Monikuntala Jana
CSIR, National Geophysical Research Institute, Hyderabad, India
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Vyasulu V. Akkiraju
Vyasulu V. Akkiraju
Borehole Geophysical Research Laboratory, Maharashtra, India
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Deepjyoti Goswami
Deepjyoti Goswami
Borehole Geophysical Research Laboratory, Maharashtra, India
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Digant Vyas
Digant Vyas
Borehole Geophysical Research Laboratory, Maharashtra, India
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C. P. Dubey
C. P. Dubey
National Centre for Earth Science Studies, Thiruvananthapuram, India
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D. Ch. V. Raju
D. Ch. V. Raju
CSIR, National Geophysical Research Institute, Hyderabad, India
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Ujjal Borah
Ujjal Borah
CSIR, National Geophysical Research Institute, Hyderabad, India
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Kashi Raju
Kashi Raju
CSIR, National Geophysical Research Institute, Hyderabad, India
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K. Chinna Reddy
K. Chinna Reddy
CSIR, National Geophysical Research Institute, Hyderabad, India
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Narendra Babu
Narendra Babu
CSIR, National Geophysical Research Institute, Hyderabad, India
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B. K. Bansal
B. K. Bansal
Ministry of Earth Sciences, New Delhi, India
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Shailesh Nayak
Shailesh Nayak
Ministry of Earth Sciences, New Delhi, India
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Published:
January 01, 2017

Abstract

Koyna, located in the Deccan Volcanic Province in western India, is the most significant site of reservoir triggered seismicity (RTS) globally. The largest RTS event of M 6.3 occurred here on December 10, 1967. RTS at Koyna has continued. This includes 22 M ≥ 5.0 and thousands of smaller events over the past 50 years. The annual loading and unloading cycles of the Koyna Reservoir and the nearby Warna Reservoir influence RTS. Koyna provides an excellent natural laboratory to comprehend the mechanism of RTS because earthquakes here occur in a small area, mostly at depths of 2–7 km, which are accessible for monitoring. A deep borehole laboratory is therefore planned to study earthquakes in the near-field to understand their genesis, especially in an RTS environment. Initially, several geophysical investigations were carried out to characterize the seismic zone, including 5000 line kilometres of airborne gravity gradiometry and magnetic surveys, high-quality magnetotelluric data from 100 stations, airborne LiDAR surveys over 1064 km2, drilling of 8 boreholes of approximately 1500 m depth and geophysical logging. To improve the earthquake locations a unique network of borehole seismometers was installed in six of these boreholes. These results, along with a pilot borehole drilling plan, are presented here.

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Contents

Geological Society, London, Special Publications

Tectonics of the Deccan Large Igneous Province

S. Mukherjee
S. Mukherjee
Department of Earth Sciences, Indian Institute of Technology Bombay, Mumbai 400 076, Maharashtra, India
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A. A. Misra
A. A. Misra
Exploration, Reliance Industries Ltd, Mumbai 400 701, Maharashtra, India
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G. Calvès
G. Calvès
Université Toulouse 3, Paul Sabatier, Géosciences Environnement Toulouse, 14 avenue Edouard Belin, 31400, Toulouse, France
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M. Nemčok
M. Nemčok
EGI at University of Utah, 423 Wakara Way, Suite 300, Salt Lake City, UT 84108, USAEGI Laboratory at SAV, Dúbravskácesta 9, 840 05 Bratislava, Slovakia
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Geological Society of London
Volume
445
ISBN electronic:
9781786203281
Publication date:
January 01, 2017

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