Diurnal chemistry of two contrasting stream types, Taylor Valley, McMurdo Dry Valley Region, Antarctica
Numerous ephemeral streams flow within the McMurdo Dry Valley Region of Antarctica that transport glacial meltwater to perennially ice-covered, closed-basin lakes during the austral summer. The diurnal behavior for two Taylor Valley streams of different character was examined during the summer of 20...
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EDP Sciences
2019
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fttriple:oai:gotriple.eu:oai:doaj.org/article:341d2cc7dad54cc589a3373912ed5b0a 2023-05-15T14:03:52+02:00 Diurnal chemistry of two contrasting stream types, Taylor Valley, McMurdo Dry Valley Region, Antarctica Harmon Russell S. Leslie Deborah L. Lyons W. Berry Welch Kathleen A. McKnight Diane M. 2019-01-01 https://doi.org/10.1051/e3sconf/20199801020 https://www.e3s-conferences.org/articles/e3sconf/pdf/2019/24/e3sconf_wri-162018_01020.pdf https://doaj.org/article/341d2cc7dad54cc589a3373912ed5b0a en fr eng fre EDP Sciences 2267-1242 doi:10.1051/e3sconf/20199801020 https://www.e3s-conferences.org/articles/e3sconf/pdf/2019/24/e3sconf_wri-162018_01020.pdf https://doaj.org/article/341d2cc7dad54cc589a3373912ed5b0a undefined E3S Web of Conferences, Vol 98, p 01020 (2019) geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2019 fttriple https://doi.org/10.1051/e3sconf/20199801020 2023-01-22T17:53:05Z Numerous ephemeral streams flow within the McMurdo Dry Valley Region of Antarctica that transport glacial meltwater to perennially ice-covered, closed-basin lakes during the austral summer. The diurnal behavior for two Taylor Valley streams of different character was examined during the summer of 2010-11. Andersen Creek is a short, 1st-order proglacial stream, whereas Von Guerard Stream is a long, high-order stream with an extensive hyporheic zone that has a substantial cyanobacterial algal mat community in its middle reaches. Both streams display strong daily cycles for temperature, electrical conductivity, dissolved oxygen, and pH. Conductivity varies in concert with flow, with solute dilution occurring during the daily high-flow pulse. Dissolved oxygen co-varies strongly with pH at Andersen Creek but not for Von Guerard Stream. Each stream has a distinct geochemical character that for Andersen Creek is a direct reflection of its glacial source, unmodified by secondary effects, whereas that for Von Guerard Stream is modulated by its resident algal mat community and through extensive hyporheic zone interaction and exchange. Article in Journal/Newspaper Antarc* Antarctica Unknown Andersen Creek ENVELOPE(162.900,162.900,-77.617,-77.617) Austral Taylor Valley ENVELOPE(163.000,163.000,-77.617,-77.617) Von Guerard Stream ENVELOPE(163.250,163.250,-77.617,-77.617) E3S Web of Conferences 98 01020 |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
English French |
topic |
geo envir |
spellingShingle |
geo envir Harmon Russell S. Leslie Deborah L. Lyons W. Berry Welch Kathleen A. McKnight Diane M. Diurnal chemistry of two contrasting stream types, Taylor Valley, McMurdo Dry Valley Region, Antarctica |
topic_facet |
geo envir |
description |
Numerous ephemeral streams flow within the McMurdo Dry Valley Region of Antarctica that transport glacial meltwater to perennially ice-covered, closed-basin lakes during the austral summer. The diurnal behavior for two Taylor Valley streams of different character was examined during the summer of 2010-11. Andersen Creek is a short, 1st-order proglacial stream, whereas Von Guerard Stream is a long, high-order stream with an extensive hyporheic zone that has a substantial cyanobacterial algal mat community in its middle reaches. Both streams display strong daily cycles for temperature, electrical conductivity, dissolved oxygen, and pH. Conductivity varies in concert with flow, with solute dilution occurring during the daily high-flow pulse. Dissolved oxygen co-varies strongly with pH at Andersen Creek but not for Von Guerard Stream. Each stream has a distinct geochemical character that for Andersen Creek is a direct reflection of its glacial source, unmodified by secondary effects, whereas that for Von Guerard Stream is modulated by its resident algal mat community and through extensive hyporheic zone interaction and exchange. |
format |
Article in Journal/Newspaper |
author |
Harmon Russell S. Leslie Deborah L. Lyons W. Berry Welch Kathleen A. McKnight Diane M. |
author_facet |
Harmon Russell S. Leslie Deborah L. Lyons W. Berry Welch Kathleen A. McKnight Diane M. |
author_sort |
Harmon Russell S. |
title |
Diurnal chemistry of two contrasting stream types, Taylor Valley, McMurdo Dry Valley Region, Antarctica |
title_short |
Diurnal chemistry of two contrasting stream types, Taylor Valley, McMurdo Dry Valley Region, Antarctica |
title_full |
Diurnal chemistry of two contrasting stream types, Taylor Valley, McMurdo Dry Valley Region, Antarctica |
title_fullStr |
Diurnal chemistry of two contrasting stream types, Taylor Valley, McMurdo Dry Valley Region, Antarctica |
title_full_unstemmed |
Diurnal chemistry of two contrasting stream types, Taylor Valley, McMurdo Dry Valley Region, Antarctica |
title_sort |
diurnal chemistry of two contrasting stream types, taylor valley, mcmurdo dry valley region, antarctica |
publisher |
EDP Sciences |
publishDate |
2019 |
url |
https://doi.org/10.1051/e3sconf/20199801020 https://www.e3s-conferences.org/articles/e3sconf/pdf/2019/24/e3sconf_wri-162018_01020.pdf https://doaj.org/article/341d2cc7dad54cc589a3373912ed5b0a |
long_lat |
ENVELOPE(162.900,162.900,-77.617,-77.617) ENVELOPE(163.000,163.000,-77.617,-77.617) ENVELOPE(163.250,163.250,-77.617,-77.617) |
geographic |
Andersen Creek Austral Taylor Valley Von Guerard Stream |
geographic_facet |
Andersen Creek Austral Taylor Valley Von Guerard Stream |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
E3S Web of Conferences, Vol 98, p 01020 (2019) |
op_relation |
2267-1242 doi:10.1051/e3sconf/20199801020 https://www.e3s-conferences.org/articles/e3sconf/pdf/2019/24/e3sconf_wri-162018_01020.pdf https://doaj.org/article/341d2cc7dad54cc589a3373912ed5b0a |
op_rights |
undefined |
op_doi |
https://doi.org/10.1051/e3sconf/20199801020 |
container_title |
E3S Web of Conferences |
container_volume |
98 |
container_start_page |
01020 |
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1766274734570340352 |