TITLE:
Aseismic Layer Detected in the Mid-Crust of Nubra-Siachen Region, India Using Local Seismic Data
AUTHORS:
Rajinder Parshad, Snehmani, Pankaj Kumar Srivastva, Reeta Rani, Ashwagosha Ganju
KEYWORDS:
Shear Zone, Karakorum, Local Events, Aseismic, Nubra-Siachen
JOURNAL NAME:
International Journal of Geosciences,
Vol.6 No.9,
September
22,
2015
ABSTRACT: The local seismicity
observed by seismic network in siachen-nubra region during January 2010-December
2012 shows that the middle part of the crust (17 - 40 km) is aseismic. This
aseismic layer (17 - 40 km) is sandwiched between two seismically active layers
and depicts a good spatial correlation with the observations of low resistivity
reported from magnetotelluric studies for the same region. The local seismicity
shows a trend along the Karakoram fault and clustering of events in Shyok
Suture zone and Karakoram shear zone. The moment magnitude of these events lies
between 1.3 and 4.3. Most of these events have been originated in upper crust.