Geophysical constraints on critical zone architecture and subsurface hydrology of opposing montane hillslopes
Includes bibliographical references. 2016 Spring. We investigate the relationship between slope aspect, subsurface hydrology, and critical zone (CZ) structure in a montane watershed by examining the orientations of foliation and fracturing and thicknesses of weathered material on north- and south-fa...
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ftmountainschol:oai:mountainscholar.org:11124/170251 2023-05-15T17:57:52+02:00 Geophysical constraints on critical zone architecture and subsurface hydrology of opposing montane hillslopes Bandler, Aaron J. Singha, Kamini Santi, Paul M. (Paul Michael), 1964- Swidinsky, Andrei 2016-06-15T20:47:33Z born digital masters theses application/pdf application/zip http://hdl.handle.net/11124/170251 English eng eng Colorado School of Mines. Arthur Lakes Library Bandler, Aaron and Kamini Singha, Gordon Gulch Data, 2016. http://hdl.handle.net/11124/170404 2016 - Mines Theses & Dissertations T 8062 http://hdl.handle.net/11124/170251 Copyright of the original work is retained by the author. Embargo Expires: 12/15/2016 aspect critical zone CZO hydrogeophysics optical borehole imaging seismic refraction Text 2016 ftmountainschol 2022-03-07T20:57:41Z Includes bibliographical references. 2016 Spring. We investigate the relationship between slope aspect, subsurface hydrology, and critical zone (CZ) structure in a montane watershed by examining the orientations of foliation and fracturing and thicknesses of weathered material on north- and south-facing aspects. Weathering models predict that north-facing slopes will have thicker and more porous saprolite due to colder, wetter conditions, which exacerbate frost damage and weathering along open fractures. Using borehole imaging and seismic refraction, we compare the seismic velocity and anisotropy of north- and south-facing slopes with the orientation of fracturing. Fracturing occurs in the same dominant orientations across slopes, but the north-facing slope has more developed and slightly thicker soil as predicted, while the south-facing slope has thicker and more intact saprolite that is highly anisotropic in the direction of fracturing. Our data support hypotheses that subsurface flow is matrix-driven on north-facing slopes and preferential on south-facing slopes. We attribute thicker saprolite on south-facing slopes to heterogeneity induced by competition between infiltration, topographic stress, and permafrost during Pleistocene glaciation. We provide new constraints on subsurface architecture to inform future models of CZ evolution. Text permafrost Mountain Scholar (Digital Collections of Colorado and Wyoming) |
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Open Polar |
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Mountain Scholar (Digital Collections of Colorado and Wyoming) |
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ftmountainschol |
language |
English |
topic |
aspect critical zone CZO hydrogeophysics optical borehole imaging seismic refraction |
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aspect critical zone CZO hydrogeophysics optical borehole imaging seismic refraction Bandler, Aaron J. Geophysical constraints on critical zone architecture and subsurface hydrology of opposing montane hillslopes |
topic_facet |
aspect critical zone CZO hydrogeophysics optical borehole imaging seismic refraction |
description |
Includes bibliographical references. 2016 Spring. We investigate the relationship between slope aspect, subsurface hydrology, and critical zone (CZ) structure in a montane watershed by examining the orientations of foliation and fracturing and thicknesses of weathered material on north- and south-facing aspects. Weathering models predict that north-facing slopes will have thicker and more porous saprolite due to colder, wetter conditions, which exacerbate frost damage and weathering along open fractures. Using borehole imaging and seismic refraction, we compare the seismic velocity and anisotropy of north- and south-facing slopes with the orientation of fracturing. Fracturing occurs in the same dominant orientations across slopes, but the north-facing slope has more developed and slightly thicker soil as predicted, while the south-facing slope has thicker and more intact saprolite that is highly anisotropic in the direction of fracturing. Our data support hypotheses that subsurface flow is matrix-driven on north-facing slopes and preferential on south-facing slopes. We attribute thicker saprolite on south-facing slopes to heterogeneity induced by competition between infiltration, topographic stress, and permafrost during Pleistocene glaciation. We provide new constraints on subsurface architecture to inform future models of CZ evolution. |
author2 |
Singha, Kamini Santi, Paul M. (Paul Michael), 1964- Swidinsky, Andrei |
format |
Text |
author |
Bandler, Aaron J. |
author_facet |
Bandler, Aaron J. |
author_sort |
Bandler, Aaron J. |
title |
Geophysical constraints on critical zone architecture and subsurface hydrology of opposing montane hillslopes |
title_short |
Geophysical constraints on critical zone architecture and subsurface hydrology of opposing montane hillslopes |
title_full |
Geophysical constraints on critical zone architecture and subsurface hydrology of opposing montane hillslopes |
title_fullStr |
Geophysical constraints on critical zone architecture and subsurface hydrology of opposing montane hillslopes |
title_full_unstemmed |
Geophysical constraints on critical zone architecture and subsurface hydrology of opposing montane hillslopes |
title_sort |
geophysical constraints on critical zone architecture and subsurface hydrology of opposing montane hillslopes |
publisher |
Colorado School of Mines. Arthur Lakes Library |
publishDate |
2016 |
url |
http://hdl.handle.net/11124/170251 |
genre |
permafrost |
genre_facet |
permafrost |
op_relation |
Bandler, Aaron and Kamini Singha, Gordon Gulch Data, 2016. http://hdl.handle.net/11124/170404 2016 - Mines Theses & Dissertations T 8062 http://hdl.handle.net/11124/170251 |
op_rights |
Copyright of the original work is retained by the author. Embargo Expires: 12/15/2016 |
_version_ |
1766166375639810048 |