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http://hdl.handle.net/2122/5225
Authors: | Mullick, M.* Riguzzi, F.* Mukhopadhyay, D.* |
Title: | Estimates of motion and strain rates across active faults in the frontal part of eastern Himalayas in North Bengal from GPS measurements | Journal: | Terra Nova | Series/Report no.: | 5/21 (2009) | Publisher: | Blackwell | Issue Date: | Oct-2009 | DOI: | 10.1111/j.1365-3121.2009.00898.x | Keywords: | GPS Himalayas North Bengal Gish fault strain rate ITRF2005 |
Subject Classification: | 04. Solid Earth::04.03. Geodesy::04.03.01. Crustal deformations | Abstract: | Within the 2500 km stretch of the Himalayas, a narrow window between longitudes 88.185 E and 88.936 E in the frontal Himalayas in North Bengal, crisscrossed by several active fault traces, presents an interesting region for crustal deformation study. We have estimated velocities of 8 GPS stations located in this area and the accumulating strain rate by two different methods. A total shortening of 11.1 ± 1.5 mm yr)1 is occurring across a set of four E–W running faults: Gorubathan, Matiali, Chalsa and Baradighi. The strain rate becomes higher in the NE part of the network, reaching )(0.25 ± 0.12) lstrain yr)1 with azimuth 21 . A statistically significant extension of 10.9 ± 1.6 mm yr)1 is estimated across the Gish transverse fault with a maximum strain rate of 0.36 ± 0.08 lstrain yr)1 with azimuth 103 . The accumulating strain will be probably released through future earthquakes. |
Appears in Collections: | Article published / in press |
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