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@article{Lipp:2021:10.1029/2020gl091107,
author = {Lipp, AG and Roberts, GG},
doi = {10.1029/2020gl091107},
journal = {Geophysical Research Letters},
pages = {1--12},
title = {Scaledependent flow directions of rivers and the importance of subplate support},
url = {http://dx.doi.org/10.1029/2020gl091107},
volume = {48},
year = {2021}
}

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TY  - JOUR
AB  - Large rivers play crucial roles in determining locations of civilization, biodiversity, and efflux to the oceans. The paths they take across Earth's surface vary with scale. At longwavelengths rivers can have simple flow paths. At smaller scales, in meanders for example, their paths change rapidly as a consequence of lithology, biota, and other environmental variables. It is not straightforward to identify the scales at which river planforms are set. We overcome these issues by developing a spectral (wavelet) methodology to map flowdirections as a function of distance and scale. This methodology allows shortwavelength features (e.g., meanders) to be filtered from river flowpaths. With shortwavelength structure removed, the flowdirections of rivers in Western USA correlate with longwavelength gravity anomalies suggesting control by subplate support. This relationship is replicated by an ensemble of landscape evolution models. These results combined suggest that drainage at large scales, O(103) km, is set by subplate support.
AU  - Lipp,AG
AU  - Roberts,GG
DO  - 10.1029/2020gl091107
EP  - 12
PY  - 2021///
SN  - 0094-8276
SP  - 1
TI  - Scaledependent flow directions of rivers and the importance of subplate support
T2  - Geophysical Research Letters
UR  - http://dx.doi.org/10.1029/2020gl091107
UR  - http://hdl.handle.net/10044/1/86262
VL  - 48
ER  -

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