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Rajendran, Kusala
- Seismicity of the North-East India Region
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Authors
Affiliations
1 Centre for Earth Science Studies, Trivandrum 695 010, IN
1 Centre for Earth Science Studies, Trivandrum 695 010, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 28, No 5 (1986), Pagination: 345-365Abstract
The north-east India region is seismically one of the most active regions In the world. An earthquake data base for the region from the earliest time to 1984 is presented here. These data would be utilized for investigating the earthquake phenomenon in the region.- Mechanism of Microseismic Activity in Kerala - A Suggestion
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Authors
Affiliations
1 Centre For Earth Science Studies, Trivandrum-695 031, IN
1 Centre For Earth Science Studies, Trivandrum-695 031, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 47, No 4 (1996), Pagination: 467-476Abstract
The occasional incidences of microearthquakes in Kerala have been interpreted to be caused by the reactivation of ancient preexisting faults. While not negating the traditional wisdom, we propose an unconventional approach to analyze the mechanism of microseismicity in Kerala. A moot point considered here is the perceptive increase in the frequency of the microearthquakes in the state over the last decade, quite often coinciding with periods of increased rainfall. Although the occurrence of rain may not be a sufficient or necessary condition for the increase in the level of seismic activity, the correspondence between the two appears to be more than casual. On the basis of this observation. we suggest here that the tremors in Kerala may have been caused by transient increase in the hydrostatic pressure at shallow crustal depths. The mechanism of shallow earthquakes may be similar to what is proposed in the "hydroseismicity" model. Changing land use patterns, deforestation, soil erosion and increased siltation in the drainage basins are the robust parameters in this model.Keywords
Micro- and Hydroseismicity, Rainfall, Kerala.- Mild Tremors Near Thalasseri (November, 2003): Evidence For a Seismic Source in North Kerala
Abstract Views :222 |
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Authors
Affiliations
1 Centre for Earth Science Studies, Akkulam, Thiruvananthapuram - 695 031, IN
1 Centre for Earth Science Studies, Akkulam, Thiruvananthapuram - 695 031, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 64, No 2 (2004), Pagination: 233-235Abstract
This note deals with the mild earth tremors that occurred near Thalasseri, Kannur District on November 8,2003. Based on the activity detected by the broadband observatory at Peechi (PCH), we suggest an additional source zone in Kerala.- Earth Day at the Indian Institute of Science, Bangalore
Abstract Views :183 |
PDF Views:140
Authors
Affiliations
1 Centre for Earth Sciences, IISc, Bangalore - 560 012, IN
1 Centre for Earth Sciences, IISc, Bangalore - 560 012, IN