Extending Airborne Electromagnetic Surveys for Regional Active Layer and Permafrost Mapping with Remote Sensing and Ancillary Data, Yukon Flats Ecoregion, Central Alaska
Machine‐learning regression tree models were used to extrapolate airborne electromagnetic resistivity data collected along flight lines in the Yukon Flats Ecoregion, central Alaska, for regional mapping of permafrost. This method of extrapolation (r = 0.86) used subsurface resistivity, Landsat Thema...
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crwiley:10.1002/ppp.1775 2024-09-15T17:34:53+00:00 Extending Airborne Electromagnetic Surveys for Regional Active Layer and Permafrost Mapping with Remote Sensing and Ancillary Data, Yukon Flats Ecoregion, Central Alaska Pastick, Neal J. Jorgenson, M. Torre Wylie, Bruce K. Minsley, Burke J. Ji, Lei Walvoord, Michelle A. Smith, Bruce D. Abraham, Jared D. Rose, Joshua R. USGS Climate Effects Network Yukon River Basin 2013 http://dx.doi.org/10.1002/ppp.1775 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.1775 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.1775 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Permafrost and Periglacial Processes volume 24, issue 3, page 184-199 ISSN 1045-6740 1099-1530 journal-article 2013 crwiley https://doi.org/10.1002/ppp.1775 2024-08-06T04:13:55Z Machine‐learning regression tree models were used to extrapolate airborne electromagnetic resistivity data collected along flight lines in the Yukon Flats Ecoregion, central Alaska, for regional mapping of permafrost. This method of extrapolation (r = 0.86) used subsurface resistivity, Landsat Thematic Mapper (TM) at‐sensor reflectance, thermal, TM‐derived spectral indices, digital elevation models and other relevant spatial data to estimate near‐surface (0–2.6‐m depth) resistivity at 30‐m resolution. A piecewise regression model (r = 0.82) and a presence/absence decision tree classification (accuracy of 87%) were used to estimate active‐layer thickness (ALT) (< 101 cm) and the probability of near‐surface (up to 123‐cm depth) permafrost occurrence from field data, modelled near‐surface (0–2.6 m) resistivity, and other relevant remote sensing and map data. At site scale, the predicted ALTs were similar to those previously observed for different vegetation types. At the landscape scale, the predicted ALTs tended to be thinner on higher‐elevation loess deposits than on low‐lying alluvial and sand sheet deposits of the Yukon Flats. The ALT and permafrost maps provide a baseline for future permafrost monitoring, serve as inputs for modelling hydrological and carbon cycles at local to regional scales, and offer insight into the ALT response to fire and thaw processes. Published 2013. This article is a U.S. Government work and is in the public domain in the USA. Article in Journal/Newspaper Active layer thickness permafrost Permafrost and Periglacial Processes Alaska Yukon Wiley Online Library Permafrost and Periglacial Processes 24 3 184 199 |
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Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Machine‐learning regression tree models were used to extrapolate airborne electromagnetic resistivity data collected along flight lines in the Yukon Flats Ecoregion, central Alaska, for regional mapping of permafrost. This method of extrapolation (r = 0.86) used subsurface resistivity, Landsat Thematic Mapper (TM) at‐sensor reflectance, thermal, TM‐derived spectral indices, digital elevation models and other relevant spatial data to estimate near‐surface (0–2.6‐m depth) resistivity at 30‐m resolution. A piecewise regression model (r = 0.82) and a presence/absence decision tree classification (accuracy of 87%) were used to estimate active‐layer thickness (ALT) (< 101 cm) and the probability of near‐surface (up to 123‐cm depth) permafrost occurrence from field data, modelled near‐surface (0–2.6 m) resistivity, and other relevant remote sensing and map data. At site scale, the predicted ALTs were similar to those previously observed for different vegetation types. At the landscape scale, the predicted ALTs tended to be thinner on higher‐elevation loess deposits than on low‐lying alluvial and sand sheet deposits of the Yukon Flats. The ALT and permafrost maps provide a baseline for future permafrost monitoring, serve as inputs for modelling hydrological and carbon cycles at local to regional scales, and offer insight into the ALT response to fire and thaw processes. Published 2013. This article is a U.S. Government work and is in the public domain in the USA. |
author2 |
USGS Climate Effects Network Yukon River Basin |
format |
Article in Journal/Newspaper |
author |
Pastick, Neal J. Jorgenson, M. Torre Wylie, Bruce K. Minsley, Burke J. Ji, Lei Walvoord, Michelle A. Smith, Bruce D. Abraham, Jared D. Rose, Joshua R. |
spellingShingle |
Pastick, Neal J. Jorgenson, M. Torre Wylie, Bruce K. Minsley, Burke J. Ji, Lei Walvoord, Michelle A. Smith, Bruce D. Abraham, Jared D. Rose, Joshua R. Extending Airborne Electromagnetic Surveys for Regional Active Layer and Permafrost Mapping with Remote Sensing and Ancillary Data, Yukon Flats Ecoregion, Central Alaska |
author_facet |
Pastick, Neal J. Jorgenson, M. Torre Wylie, Bruce K. Minsley, Burke J. Ji, Lei Walvoord, Michelle A. Smith, Bruce D. Abraham, Jared D. Rose, Joshua R. |
author_sort |
Pastick, Neal J. |
title |
Extending Airborne Electromagnetic Surveys for Regional Active Layer and Permafrost Mapping with Remote Sensing and Ancillary Data, Yukon Flats Ecoregion, Central Alaska |
title_short |
Extending Airborne Electromagnetic Surveys for Regional Active Layer and Permafrost Mapping with Remote Sensing and Ancillary Data, Yukon Flats Ecoregion, Central Alaska |
title_full |
Extending Airborne Electromagnetic Surveys for Regional Active Layer and Permafrost Mapping with Remote Sensing and Ancillary Data, Yukon Flats Ecoregion, Central Alaska |
title_fullStr |
Extending Airborne Electromagnetic Surveys for Regional Active Layer and Permafrost Mapping with Remote Sensing and Ancillary Data, Yukon Flats Ecoregion, Central Alaska |
title_full_unstemmed |
Extending Airborne Electromagnetic Surveys for Regional Active Layer and Permafrost Mapping with Remote Sensing and Ancillary Data, Yukon Flats Ecoregion, Central Alaska |
title_sort |
extending airborne electromagnetic surveys for regional active layer and permafrost mapping with remote sensing and ancillary data, yukon flats ecoregion, central alaska |
publisher |
Wiley |
publishDate |
2013 |
url |
http://dx.doi.org/10.1002/ppp.1775 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.1775 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.1775 |
genre |
Active layer thickness permafrost Permafrost and Periglacial Processes Alaska Yukon |
genre_facet |
Active layer thickness permafrost Permafrost and Periglacial Processes Alaska Yukon |
op_source |
Permafrost and Periglacial Processes volume 24, issue 3, page 184-199 ISSN 1045-6740 1099-1530 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/ppp.1775 |
container_title |
Permafrost and Periglacial Processes |
container_volume |
24 |
container_issue |
3 |
container_start_page |
184 |
op_container_end_page |
199 |
_version_ |
1810432026045579264 |