TY  - JOUR
A1  - Scherler, Dirk
A1  - Bookhagen, Bodo
A1  - Strecker, Manfred
T1  - Tectonic control on Be-10-derived erosion rates in the Garhwal Himalaya, India
JF  - Journal of geophysical research : Earth surface
N2  - Erosion in the Himalaya is responsible for one of the greatest mass redistributions on Earth and has fueled models of feedback loops between climate and tectonics. Although the general trends of erosion across the Himalaya are reasonably well known, the relative importance of factors controlling erosion is less well constrained. Here we present 25 Be-10-derived catchment-averaged erosion rates from the Yamuna catchment in the Garhwal Himalaya, northern India. Tributary erosion rates range between similar to 0.1 and 0.5mmyr(-1) in the Lesser Himalaya and similar to 1 and 2mmyr(-1) in the High Himalaya, despite uniform hillslope angles. The erosion-rate data correlate with catchment-averaged values of 5 km radius relief, channel steepness indices, and specific stream power but to varying degrees of nonlinearity. Similar nonlinear relationships and coefficients of determination suggest that topographic steepness is the major control on the spatial variability of erosion and that twofold to threefold differences in annual runoff are of minor importance in this area. Instead, the spatial distribution of erosion in the study area is consistent with a tectonic model in which the rock uplift pattern is largely controlled by the shortening rate and the geometry of the Main Himalayan Thrust fault (MHT). Our data support a shallow dip of the MHT underneath the Lesser Himalaya, followed by a midcrustal ramp underneath the High Himalaya, as indicated by geophysical data. Finally, analysis of sample results from larger main stem rivers indicates significant variability of Be-10-derived erosion rates, possibly related to nonproportional sediment supply from different tributaries and incomplete mixing in main stem channels.
KW  - Himalaya
KW  - erosion
KW  - tectonics
KW  - cosmogenic nuclides
KW  - channel steepness
KW  - stream power
Y1  - 2014
U6  - https://doi.org/10.1002/2013JF002955
SN  - 2169-9003
SN  - 2169-9011
VL  - 119
IS  - 2
SP  - 83
EP  - 105
PB  - American Geophysical Union
CY  - Washington
ER  - 
TY  - JOUR
A1  - Hoke, Gregory D.
A1  - Giambiagi, Laura B.
A1  - Garzione, Carmala N.
A1  - Mahoney, J. Brian
A1  - Strecker, Manfred
T1  - Neogene paleoelevation of intermontane basins in a narrow, compressional mountain range, southern Central Andes of Argentina
JF  - Earth & planetary science letters
KW  - Neogene
KW  - Andes
KW  - surface uplift
KW  - tectonics
KW  - paleoelevation
Y1  - 2014
U6  - https://doi.org/10.1016/j.epsl.2014.08.032
SN  - 0012-821X
SN  - 1385-013X
VL  - 406
SP  - 153
EP  - 164
PB  - Elsevier
CY  - Amsterdam
ER  -