Timing and duration of ephemeral Antarctic water tracks and wetlands using high temporal–resolution satellite imagery, high spatial–resolution satellite imagery, and ground-based sensors in the McMurdo Dry Valleys
Antarctic water tracks and ephemeral wetlands are a primary location for biogeochemical soil processes driving cold desert soil formation. Though the spatial extent of water tracks and wetted soils has been mapped in the McMurdo Dry Valleys (MDV) on the basis of mapping darkened pixels in high-resol...
Published in: | Arctic, Antarctic, and Alpine Research |
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Language: | English |
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Taylor & Francis Group
2022
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Online Access: | https://doi.org/10.1080/15230430.2022.2123858 https://doaj.org/article/0cc6ba1861e44c15b26f075092959428 |
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fttriple:oai:gotriple.eu:oai:doaj.org/article:0cc6ba1861e44c15b26f075092959428 2023-05-15T14:04:10+02:00 Timing and duration of ephemeral Antarctic water tracks and wetlands using high temporal–resolution satellite imagery, high spatial–resolution satellite imagery, and ground-based sensors in the McMurdo Dry Valleys Lily Kuentz Joseph Levy Mark Salvatore 2022-12-01 https://doi.org/10.1080/15230430.2022.2123858 https://doaj.org/article/0cc6ba1861e44c15b26f075092959428 en eng Taylor & Francis Group doi:10.1080/15230430.2022.2123858 1938-4246 1523-0430 https://doaj.org/article/0cc6ba1861e44c15b26f075092959428 undefined Arctic, Antarctic, and Alpine Research, Vol 54, Iss 1, Pp 538-561 (2022) Antarctica water track wetland hydroperiod remote sensing geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2022 fttriple https://doi.org/10.1080/15230430.2022.2123858 2023-01-22T18:11:22Z Antarctic water tracks and ephemeral wetlands are a primary location for biogeochemical soil processes driving cold desert soil formation. Though the spatial extent of water tracks and wetted soils has been mapped in the McMurdo Dry Valleys (MDV) on the basis of mapping darkened pixels in high-resolution commercial satellite imagery, the timescale over which water tracks and wetlands form and the duration of these biogeochemically active environments remain unknown. Here, we determine the start date and end dates and the duration of wetted soils at ten sites located across the MDV using a combination of in situ soil sensors and two complementary remote imaging platforms (Planet and WorldView) to understand the hydroclimatic processes that drive water track and wetland formation. Our remote sensing employs a terrain correction workflow that removes the contribution of differential direct illumination and small-scale shadowing on pixel brightness, reducing false positives (soils identified as wetted when in fact they are shadowed or darkened as a consequence of high phase angle). Our findings extend the water track and wetland hydroperiod by over a month, showing darkening occurring from November to March, suggesting hydrological contributions from ground ice thaw, snowmelt, and salt deliquescence and soil brine growth. Article in Journal/Newspaper Antarc* Antarctic Antarctic and Alpine Research Antarctica Arctic McMurdo Dry Valleys Unknown Antarctic McMurdo Dry Valleys Arctic, Antarctic, and Alpine Research 54 1 538 561 |
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Open Polar |
collection |
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op_collection_id |
fttriple |
language |
English |
topic |
Antarctica water track wetland hydroperiod remote sensing geo envir |
spellingShingle |
Antarctica water track wetland hydroperiod remote sensing geo envir Lily Kuentz Joseph Levy Mark Salvatore Timing and duration of ephemeral Antarctic water tracks and wetlands using high temporal–resolution satellite imagery, high spatial–resolution satellite imagery, and ground-based sensors in the McMurdo Dry Valleys |
topic_facet |
Antarctica water track wetland hydroperiod remote sensing geo envir |
description |
Antarctic water tracks and ephemeral wetlands are a primary location for biogeochemical soil processes driving cold desert soil formation. Though the spatial extent of water tracks and wetted soils has been mapped in the McMurdo Dry Valleys (MDV) on the basis of mapping darkened pixels in high-resolution commercial satellite imagery, the timescale over which water tracks and wetlands form and the duration of these biogeochemically active environments remain unknown. Here, we determine the start date and end dates and the duration of wetted soils at ten sites located across the MDV using a combination of in situ soil sensors and two complementary remote imaging platforms (Planet and WorldView) to understand the hydroclimatic processes that drive water track and wetland formation. Our remote sensing employs a terrain correction workflow that removes the contribution of differential direct illumination and small-scale shadowing on pixel brightness, reducing false positives (soils identified as wetted when in fact they are shadowed or darkened as a consequence of high phase angle). Our findings extend the water track and wetland hydroperiod by over a month, showing darkening occurring from November to March, suggesting hydrological contributions from ground ice thaw, snowmelt, and salt deliquescence and soil brine growth. |
format |
Article in Journal/Newspaper |
author |
Lily Kuentz Joseph Levy Mark Salvatore |
author_facet |
Lily Kuentz Joseph Levy Mark Salvatore |
author_sort |
Lily Kuentz |
title |
Timing and duration of ephemeral Antarctic water tracks and wetlands using high temporal–resolution satellite imagery, high spatial–resolution satellite imagery, and ground-based sensors in the McMurdo Dry Valleys |
title_short |
Timing and duration of ephemeral Antarctic water tracks and wetlands using high temporal–resolution satellite imagery, high spatial–resolution satellite imagery, and ground-based sensors in the McMurdo Dry Valleys |
title_full |
Timing and duration of ephemeral Antarctic water tracks and wetlands using high temporal–resolution satellite imagery, high spatial–resolution satellite imagery, and ground-based sensors in the McMurdo Dry Valleys |
title_fullStr |
Timing and duration of ephemeral Antarctic water tracks and wetlands using high temporal–resolution satellite imagery, high spatial–resolution satellite imagery, and ground-based sensors in the McMurdo Dry Valleys |
title_full_unstemmed |
Timing and duration of ephemeral Antarctic water tracks and wetlands using high temporal–resolution satellite imagery, high spatial–resolution satellite imagery, and ground-based sensors in the McMurdo Dry Valleys |
title_sort |
timing and duration of ephemeral antarctic water tracks and wetlands using high temporal–resolution satellite imagery, high spatial–resolution satellite imagery, and ground-based sensors in the mcmurdo dry valleys |
publisher |
Taylor & Francis Group |
publishDate |
2022 |
url |
https://doi.org/10.1080/15230430.2022.2123858 https://doaj.org/article/0cc6ba1861e44c15b26f075092959428 |
geographic |
Antarctic McMurdo Dry Valleys |
geographic_facet |
Antarctic McMurdo Dry Valleys |
genre |
Antarc* Antarctic Antarctic and Alpine Research Antarctica Arctic McMurdo Dry Valleys |
genre_facet |
Antarc* Antarctic Antarctic and Alpine Research Antarctica Arctic McMurdo Dry Valleys |
op_source |
Arctic, Antarctic, and Alpine Research, Vol 54, Iss 1, Pp 538-561 (2022) |
op_relation |
doi:10.1080/15230430.2022.2123858 1938-4246 1523-0430 https://doaj.org/article/0cc6ba1861e44c15b26f075092959428 |
op_rights |
undefined |
op_doi |
https://doi.org/10.1080/15230430.2022.2123858 |
container_title |
Arctic, Antarctic, and Alpine Research |
container_volume |
54 |
container_issue |
1 |
container_start_page |
538 |
op_container_end_page |
561 |
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1766275182526201856 |