Volume XLII-5
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLII-5, 451-454, 2018
https://doi.org/10.5194/isprs-archives-XLII-5-451-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLII-5, 451-454, 2018
https://doi.org/10.5194/isprs-archives-XLII-5-451-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

  19 Nov 2018

19 Nov 2018

GPS-BASED MONITORING OF CRUSTAL DEFORMATION IN GARHWAL-KUMAUN HIMALAYA

Y. Sharma1, S. Pasari1, O. Dikshit2, and K. E. Ching3 Y. Sharma et al.
  • 1Birla Institute of Technology & Science, Pilani, India
  • 2Indian Institute of Technology Kanpur, India
  • 3National Cheng Kung University, Tainan, Taiwan

Keywords: Earthquakes, GPS, GAMIT-GLOBK, Garhwal-Kumaun Himalaya, Slip rate

Abstract. The Himalayan region has experienced a number of large magnitude earthquakes in the past. Seismicity is mainly due to tectonic activity along the thrust faults that trend parallel to the Himalayan mountain belt. In order to study the ongoing tectonic process, we report Global Positioning System (GPS) measurements of crustal deformation in the Garhwal-Kumaun Himalaya through two continuous and 21 campaign stations. We collect GPS data since 2013 and analyze with the GAMIT/GLOBK suite of postprocessing software. Our estimated surface velocities in ITRF2008, India-fixed, and Eurasia-fixed reference frame lie in the range of 42–52mm/yr, 1–6mm/yr, and 31–37mm/yr, respectively. We observe insignificant slip rate (∼1mm/yr) of HFT that indicates its locking behavior. The slip rates of MBT and MCT, however, are consistent with the seismic activity of the study region.