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Topography as a proxy for inter-plate coupling

Published on Nov 1, 2018in Journal of Geodynamics2.81
· DOI :10.1016/j.jog.2018.09.007
Debasis Pal1
Estimated H-index: 1
(NITR: National Institute of Technology, Rourkela),
Debasis Pal (NITR: National Institute of Technology, Rourkela)+ 0 AuthorsM. Santosh82
Estimated H-index: 82
(University of Adelaide)
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Abstract
Abstract The topography of active mountain belts is shaped by long-term crustal deformation and strain from tectonic plates. To test this hypothesis, we correlated mean topography, topographic slope and GPS derived strain rates along the active orogenic belts of South America (Ecuador and northern Peru segments), where relatively rapid convergence occurs between the Nazca and South America plates. Our results show that the Ecuador and northern Peru segments follow well-defined power-law relation with distinct exponents that are consistent with the nonlinear deformation associated with dislocation-creep occurring at depth. We propose that the depth of dislocation-creep and distinct power-law exponents have first order control over mean topography, and that the topographic slope can be used as proxy for inter-plate coupling.
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References54
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#1Muthuvairavasamy Ramkumar (Periyar University)H-Index: 7
#2David Menier (CNRS: Centre national de la recherche scientifique)H-Index: 12
Last.Numair Ahmed Siddiqui (UTP: Universiti Teknologi Petronas)H-Index: 6
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#1Mu. Ramkumar (Periyar University)H-Index: 7
#2David Menier (CNRS: Centre national de la recherche scientifique)H-Index: 4
Last.M. Santosh (University of Adelaide)H-Index: 82
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#1Susan L. Beck (UA: University of Arizona)H-Index: 40
#2George Zandt (UA: University of Arizona)H-Index: 50
Last.Alissa Scire (UA: University of Arizona)H-Index: 5
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#1Greg Hirth (WHOI: Woods Hole Oceanographic Institution)H-Index: 49
#2D. L. Kohlstedt (UMN: University of Minnesota)H-Index: 63
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