Active Deformation in the Darjiling-Sikkim Himalaya based on 2000-2004 Geodetic Global Positioning System Measurements.
IR@C-MMACS: CSIR-Centre for Mathematical Modelling and Computer Simulation, Bangalore
View Archive Info| Field | Value | |
| Title |
Active Deformation in the Darjiling-Sikkim Himalaya based on 2000-2004 Geodetic Global Positioning System Measurements.
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| Creator |
Jade, Sridevi
Mukul, Malay |
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| Subject |
GNSS/GPS Geodesy
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| Description |
High precision Geodetic Global Positioning System measurements have become important for studying present-day tectonics in active orogenic belts such as the Himalaya. Geodetic Global Positioning System measurements in the Darjiling-Sikkim Himalaya (DSH) during 2000-2004 indicate that the frontal part of the Darjiling Himalaya is locked to the Indian plate and statistically negligible shortening is accumulating there at present. While this observation is in conformity with observations made in Nepal to the west of the DSH, it differs in the fact that about ~ 12 mm/yr of convergence is accommodated in the DSH and the western Bhutan Himalaya as opposed to about ~ 20 mm/yr in Nepal Himalaya. About 16 mm of convergence is accommodated in the Arunachal Himalaya to the east of DSH of which about 6 mm is accommodated in the Lesser Arunachal Himalaya. These observations indicate that there is a fair amount of heterogeneity in the way convergence is accommodated along the length of the Himalayan arc and Himalayan seismic hazard estimations need to account for this. Seismicity patterns in the DSH indicate that active deformation in the area is driven by strike-slip as well as thrust tectonics. Strain accumulation in the DSH during 2000-2004 appears to be dominated by strike-slip tectonics in the region and about ~ 4-5 mm/yr of sinistral strike-slip is observed along a NNE-SSW trending near-vertical fault identified in the area (named as the Gish Transverse Fault).
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| Publisher |
World Scientific Publisher, Singapore.
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| Date |
2008
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| Type |
Book Section
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://cir.cmmacs.ernet.in/127/1/Chapter1_Mukulrevjuly30.pdf
Jade, Sridevi and Mukul, Malay (2008) Active Deformation in the Darjiling-Sikkim Himalaya based on 2000-2004 Geodetic Global Positioning System Measurements. In: Recent Advances in Earth Science:Indian Statistical Institute Platinum Jubilee Volumes,. Recent Advances in Earth Science:Indian Statistical Institute Platinum Jubilee Volumes, . World Scientific Publisher, Singapore., Singapore., pp. 1-28. |
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| Relation |
http://cir.cmmacs.ernet.in/127/
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