Seismic refraction data from Gordon Gulch, Boulder Creek Critical Zone Observatory
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...
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Colorado School of Mines.
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ftcolostateunidc:oai:mountainscholar.org:11124/170404 2023-05-15T17:57:50+02:00 Seismic refraction data from Gordon Gulch, Boulder Creek Critical Zone Observatory Kamini Singha and Aaron Bandler Singha, Kamini 2016-08-24T19:42:57Z application/vnd.openxmlformats-officedocument.spreadsheetml.sheet application/zip http://hdl.handle.net/11124/170404 https://doi.org/10.25676/11124/170404 English eng eng Colorado School of Mines. Bandler, Aaron and Kamini Singha, Geophysical constraints on critical zone architecture and subsurface hydrology of opposing montane hillslopes (unpublished master's thesis). Colorado School of Mines, 2016. http://hdl.handle.net/11124/170251 http://hdl.handle.net/11124/170404 http://dx.doi.org/10.25676/11124/170404 Copyright of the original work is retained by the author. Embargo expires: 2018-08-01 hydrogeophysics Dataset 2016 ftcolostateunidc https://doi.org/10.25676/11124/170404 2021-07-14T20:24:24Z 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. Dataset permafrost Digital Collections of Colorado (Colorado State University) Gulch ENVELOPE(-61.483,-61.483,-63.997,-63.997) |
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Open Polar |
collection |
Digital Collections of Colorado (Colorado State University) |
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ftcolostateunidc |
language |
English |
topic |
hydrogeophysics |
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hydrogeophysics Kamini Singha and Aaron Bandler Seismic refraction data from Gordon Gulch, Boulder Creek Critical Zone Observatory |
topic_facet |
hydrogeophysics |
description |
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 |
format |
Dataset |
author |
Kamini Singha and Aaron Bandler |
author_facet |
Kamini Singha and Aaron Bandler |
author_sort |
Kamini Singha and Aaron Bandler |
title |
Seismic refraction data from Gordon Gulch, Boulder Creek Critical Zone Observatory |
title_short |
Seismic refraction data from Gordon Gulch, Boulder Creek Critical Zone Observatory |
title_full |
Seismic refraction data from Gordon Gulch, Boulder Creek Critical Zone Observatory |
title_fullStr |
Seismic refraction data from Gordon Gulch, Boulder Creek Critical Zone Observatory |
title_full_unstemmed |
Seismic refraction data from Gordon Gulch, Boulder Creek Critical Zone Observatory |
title_sort |
seismic refraction data from gordon gulch, boulder creek critical zone observatory |
publisher |
Colorado School of Mines. |
publishDate |
2016 |
url |
http://hdl.handle.net/11124/170404 https://doi.org/10.25676/11124/170404 |
long_lat |
ENVELOPE(-61.483,-61.483,-63.997,-63.997) |
geographic |
Gulch |
geographic_facet |
Gulch |
genre |
permafrost |
genre_facet |
permafrost |
op_relation |
Bandler, Aaron and Kamini Singha, Geophysical constraints on critical zone architecture and subsurface hydrology of opposing montane hillslopes (unpublished master's thesis). Colorado School of Mines, 2016. http://hdl.handle.net/11124/170251 http://hdl.handle.net/11124/170404 http://dx.doi.org/10.25676/11124/170404 |
op_rights |
Copyright of the original work is retained by the author. Embargo expires: 2018-08-01 |
op_doi |
https://doi.org/10.25676/11124/170404 |
_version_ |
1766166333551017984 |