Controls on advance of tidewater glaciers: results from numerical modeling applied to Columbia Glacier
This is the published version, also available here: http://dx.doi.org/10.1029/2006JF000551. A one-dimensional numerical ice flow model is used to study the advance of a tidewater glacier into deep water. Starting with ice-free conditions, the model simulates glacier growth at higher elevations follo...
Published in: | Journal of Geophysical Research |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
American Geophysical Union
2015
|
Subjects: | |
Online Access: | http://hdl.handle.net/1808/17321 https://doi.org/10.1029/2006JF000551 |
id |
ftunivkansas:oai:kuscholarworks.ku.edu:1808/17321 |
---|---|
record_format |
openpolar |
spelling |
ftunivkansas:oai:kuscholarworks.ku.edu:1808/17321 2023-05-15T16:20:25+02:00 Controls on advance of tidewater glaciers: results from numerical modeling applied to Columbia Glacier Nick, F. M. van der Veen, Cornelis J. Oerlemans, J. 2015-04-06T19:52:03Z http://hdl.handle.net/1808/17321 https://doi.org/10.1029/2006JF000551 unknown American Geophysical Union Nick, F. M., C. J. van der Veen, and J. Oerlemans (2007), Controls on advance of tidewater glaciers: Results from numerical modeling applied to Columbia Glacier, J. Geophys. Res., 112, F03S24, http://dx.doi.org/10.1029/2006JF000551. http://hdl.handle.net/1808/17321 doi:10.1029/2006JF000551 openAccess tidewater glaciers calving proglacial moraine bank Article 2015 ftunivkansas https://doi.org/10.1029/2006JF000551 2022-08-26T13:16:46Z This is the published version, also available here: http://dx.doi.org/10.1029/2006JF000551. A one-dimensional numerical ice flow model is used to study the advance of a tidewater glacier into deep water. Starting with ice-free conditions, the model simulates glacier growth at higher elevations followed by advance on land to the head of the fjord. Once the terminus reaches a bed below sea level, calving is initiated. A series of simulations was carried out with various boundary conditions and parameterizations of the annual mass balance. The results suggest that irrespective of the calving criterion and accumulation rate in the catchment area, it is impossible for the glacier terminus to advance into deeper water (>300 m water depth) unless sedimentation at the glacier front is included. The advance of Columbia Glacier, Alaska, is reproduced by the model by including “conveyor belt” recycling of subglacial sediment and the formation of a sediment bank at the glacier terminus. Results indicate slow advance through the deep fjord and faster advance in shallow waters approaching the terminal moraine shoal and the mouth of the fjord. Article in Journal/Newspaper glacier glaciers Tidewater Alaska The University of Kansas: KU ScholarWorks Journal of Geophysical Research 112 F3 |
institution |
Open Polar |
collection |
The University of Kansas: KU ScholarWorks |
op_collection_id |
ftunivkansas |
language |
unknown |
topic |
tidewater glaciers calving proglacial moraine bank |
spellingShingle |
tidewater glaciers calving proglacial moraine bank Nick, F. M. van der Veen, Cornelis J. Oerlemans, J. Controls on advance of tidewater glaciers: results from numerical modeling applied to Columbia Glacier |
topic_facet |
tidewater glaciers calving proglacial moraine bank |
description |
This is the published version, also available here: http://dx.doi.org/10.1029/2006JF000551. A one-dimensional numerical ice flow model is used to study the advance of a tidewater glacier into deep water. Starting with ice-free conditions, the model simulates glacier growth at higher elevations followed by advance on land to the head of the fjord. Once the terminus reaches a bed below sea level, calving is initiated. A series of simulations was carried out with various boundary conditions and parameterizations of the annual mass balance. The results suggest that irrespective of the calving criterion and accumulation rate in the catchment area, it is impossible for the glacier terminus to advance into deeper water (>300 m water depth) unless sedimentation at the glacier front is included. The advance of Columbia Glacier, Alaska, is reproduced by the model by including “conveyor belt” recycling of subglacial sediment and the formation of a sediment bank at the glacier terminus. Results indicate slow advance through the deep fjord and faster advance in shallow waters approaching the terminal moraine shoal and the mouth of the fjord. |
format |
Article in Journal/Newspaper |
author |
Nick, F. M. van der Veen, Cornelis J. Oerlemans, J. |
author_facet |
Nick, F. M. van der Veen, Cornelis J. Oerlemans, J. |
author_sort |
Nick, F. M. |
title |
Controls on advance of tidewater glaciers: results from numerical modeling applied to Columbia Glacier |
title_short |
Controls on advance of tidewater glaciers: results from numerical modeling applied to Columbia Glacier |
title_full |
Controls on advance of tidewater glaciers: results from numerical modeling applied to Columbia Glacier |
title_fullStr |
Controls on advance of tidewater glaciers: results from numerical modeling applied to Columbia Glacier |
title_full_unstemmed |
Controls on advance of tidewater glaciers: results from numerical modeling applied to Columbia Glacier |
title_sort |
controls on advance of tidewater glaciers: results from numerical modeling applied to columbia glacier |
publisher |
American Geophysical Union |
publishDate |
2015 |
url |
http://hdl.handle.net/1808/17321 https://doi.org/10.1029/2006JF000551 |
genre |
glacier glaciers Tidewater Alaska |
genre_facet |
glacier glaciers Tidewater Alaska |
op_relation |
Nick, F. M., C. J. van der Veen, and J. Oerlemans (2007), Controls on advance of tidewater glaciers: Results from numerical modeling applied to Columbia Glacier, J. Geophys. Res., 112, F03S24, http://dx.doi.org/10.1029/2006JF000551. http://hdl.handle.net/1808/17321 doi:10.1029/2006JF000551 |
op_rights |
openAccess |
op_doi |
https://doi.org/10.1029/2006JF000551 |
container_title |
Journal of Geophysical Research |
container_volume |
112 |
container_issue |
F3 |
_version_ |
1766008336692543488 |