GPS-derived deformation rates in northwestern Himalaya and Ladakh
IR@C-MMACS: CSIR-Centre for Mathematical Modelling and Computer Simulation, Bangalore
View Archive Info| Field | Value | |
| Title |
GPS-derived deformation rates in northwestern Himalaya
and Ladakh
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| Creator |
Jade, Sridevi
M S M, Vijayan Gaur, V K M B, Ananda P, Dileep Kumar |
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| Subject |
Global Positioning System
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| Description |
Deformation rates derived from GPS measurements
made at two continuously operating stations at
Leh (34.1_N, 77.6_E) and Hanle (32.7_N, 78.9_E), and
eight campaign sites in the trans-Himalayan Ladakh
spanning 11 years (1997–2008), provide a clear picture of
the kinematics of this region as well as the convergence
rate across northwestern Himalaya. All the Ladakh sites
move 32–34 mm/year NE in the ITRF2005 reference
frame, and their relative velocities are 13–16 mm/year SW
in the Indian reference frame and *19 mm/year W with
reference to the Lhasa IGS station in southeastern Tibet.
The results indicate that there is no statistically significant
deformation in the 200-km stretch between the continuous
sites Leh and Hanle as well as between Leh and Nubra
valley sites along the Karakoram fault, whereas the sites in
and around the splayed Karakoram fault region indicate
surface deformation of 2.5 mm/year. Campaign sites along
the Karakoram fault zone indicate a fault parallel surface
motion of 1.4–2.5 mm/year in the Tangste and western
Panamik segment of the Karakoram fault, which quantifies
the best possible GPS-derived dextral slip rate of 3 mm/
year along this fault during this 11-year period. Baselines
of Ladakh sites show convergence rates of 15–18 mm/year
with respect to south India and 12–15 mm/year with
respect to Delhi in north India and Almora in the Himalaya
*400 km north-northeast of Delhi. These constitute an arc
normal convergence of 12–15 mm/year across the western
Himalaya, which is consistent with arc normal convergence
all along the Himalayan arc from west to east. Baseline
extension rates of 14–16 mm/year between Lhasa and
Ladakh sites are consistent with the east–west extension
rate of Tibetan Plateau.
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| Publisher |
Springer
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| Date |
2011-03-26
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://cir.cmmacs.ernet.in/138/1/IJRS2010.pdf
Jade, Sridevi and M S M, Vijayan and Gaur, V K and M B, Ananda and P, Dileep Kumar (2011) GPS-derived deformation rates in northwestern Himalaya and Ladakh. Internation Journal for Earth Sciences, 100 (6). pp. 1293-1301. ISSN ISSN: 1437-3254 (print version) , 1437-3262 (electronic version) |
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| Relation |
http://www.springerlink.com
http://cir.cmmacs.ernet.in/138/ |
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