Combining terrestrial, air-, and space-borne remote sensing for permafrost thaw subsidence change detection in Arctic Alaska
The unique feature of permafrost in the Arctic is the presence of a large amount of ice below the earth surface. Thermal degradation and subsequent permafrost destabilization causes thaw subsidence and thermokarst development. Because these processes are difficult to detect due to the lack of timely...
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American Geophysical Union
2017
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ftawi:oai:epic.awi.de:45446 2024-09-15T17:51:42+00:00 Combining terrestrial, air-, and space-borne remote sensing for permafrost thaw subsidence change detection in Arctic Alaska Günther, Frank Grosse, Guido Ulrich, Mathias Nitze, Ingmar Sachs, Torsten Jones, Benjamin M. 2017-12-12 https://epic.awi.de/id/eprint/45446/ https://agu.confex.com/agu/fm17/meetingapp.cgi/Paper/287620 https://hdl.handle.net/10013/epic.62e5ab23-1766-436f-bc00-003ef849304f unknown American Geophysical Union Günther, F. orcid:0000-0001-8298-8937 , Grosse, G. orcid:0000-0001-5895-2141 , Ulrich, M. , Nitze, I. orcid:0000-0002-1165-6852 , Sachs, T. and Jones, B. M. (2017) Combining terrestrial, air-, and space-borne remote sensing for permafrost thaw subsidence change detection in Arctic Alaska , AGU Fall Meeting 2017, Ernest N. Morial Convention Center, New Orleans, Louisiana, USA, 11 December 2017 - 15 December 2017 . hdl:10013/epic.62e5ab23-1766-436f-bc00-003ef849304f info:eu-repo/semantics/openAccess EPIC3AGU Fall Meeting 2017, Ernest N. Morial Convention Center, New Orleans, Louisiana, USA, 2017-12-11-2017-12-15New Orleans, Louisiana, USA, American Geophysical Union Conference notRev info:eu-repo/semantics/conferenceObject 2017 ftawi 2024-06-24T04:18:50Z The unique feature of permafrost in the Arctic is the presence of a large amount of ice below the earth surface. Thermal degradation and subsequent permafrost destabilization causes thaw subsidence and thermokarst development. Because these processes are difficult to detect due to the lack of timely and accurate elevation datasets they have received not much attention, despite their potentially global significance through the permafrost carbon feedback. Thanks to remote sensing pioneering works in Alaska and Siberia, widespread thaw subsidence has been documented and is increasingly perceived as a potentially widespread permafrost landscape response to contemporary climate change. Clearly, however, detailed local inventories are required to calibrate regional long and short-term assessments for measuring surface deformation due to permafrost thaw. The objective of our study is to analyze time series of repeat terrestrial, air-, and space borne laser scanning (rLiDAR) for quantification of land surface lowering due to permafrost thaw, which is poorly resolved in terms of recent landscape development in the Arctic. Our work aims at finding commonalities and differences of change or no change on ground-ice-rich primary surfaces that are preserved as uplands, which cover 15 to 20% of the Teshekpuk Lake Special Area on the Arctic Coastal Plain of northern Alaska. Our approach focuses on quantifying modern thaw subsidence and thermokarst rates with high spatial resolution data over several decades as well as high temporal resolution data of inter-annual intervals. Multi-annual measurements of rLiDAR over Arctic Alaska have been made by aircraft in 2016 and in 2015+2017 through on-site surveys during field expeditions. These in situ data serve as a basis for large scale surface change assessments using time series of photogrammetrically derived elevation data from very high resolution historical aerial photographs and modern satellite imagery. The synergistic data fusion approach enhances permafrost degradation ... Conference Object Arctic Climate change Ice permafrost Thermokarst Alaska Siberia Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
The unique feature of permafrost in the Arctic is the presence of a large amount of ice below the earth surface. Thermal degradation and subsequent permafrost destabilization causes thaw subsidence and thermokarst development. Because these processes are difficult to detect due to the lack of timely and accurate elevation datasets they have received not much attention, despite their potentially global significance through the permafrost carbon feedback. Thanks to remote sensing pioneering works in Alaska and Siberia, widespread thaw subsidence has been documented and is increasingly perceived as a potentially widespread permafrost landscape response to contemporary climate change. Clearly, however, detailed local inventories are required to calibrate regional long and short-term assessments for measuring surface deformation due to permafrost thaw. The objective of our study is to analyze time series of repeat terrestrial, air-, and space borne laser scanning (rLiDAR) for quantification of land surface lowering due to permafrost thaw, which is poorly resolved in terms of recent landscape development in the Arctic. Our work aims at finding commonalities and differences of change or no change on ground-ice-rich primary surfaces that are preserved as uplands, which cover 15 to 20% of the Teshekpuk Lake Special Area on the Arctic Coastal Plain of northern Alaska. Our approach focuses on quantifying modern thaw subsidence and thermokarst rates with high spatial resolution data over several decades as well as high temporal resolution data of inter-annual intervals. Multi-annual measurements of rLiDAR over Arctic Alaska have been made by aircraft in 2016 and in 2015+2017 through on-site surveys during field expeditions. These in situ data serve as a basis for large scale surface change assessments using time series of photogrammetrically derived elevation data from very high resolution historical aerial photographs and modern satellite imagery. The synergistic data fusion approach enhances permafrost degradation ... |
format |
Conference Object |
author |
Günther, Frank Grosse, Guido Ulrich, Mathias Nitze, Ingmar Sachs, Torsten Jones, Benjamin M. |
spellingShingle |
Günther, Frank Grosse, Guido Ulrich, Mathias Nitze, Ingmar Sachs, Torsten Jones, Benjamin M. Combining terrestrial, air-, and space-borne remote sensing for permafrost thaw subsidence change detection in Arctic Alaska |
author_facet |
Günther, Frank Grosse, Guido Ulrich, Mathias Nitze, Ingmar Sachs, Torsten Jones, Benjamin M. |
author_sort |
Günther, Frank |
title |
Combining terrestrial, air-, and space-borne remote sensing for permafrost thaw subsidence change detection in Arctic Alaska |
title_short |
Combining terrestrial, air-, and space-borne remote sensing for permafrost thaw subsidence change detection in Arctic Alaska |
title_full |
Combining terrestrial, air-, and space-borne remote sensing for permafrost thaw subsidence change detection in Arctic Alaska |
title_fullStr |
Combining terrestrial, air-, and space-borne remote sensing for permafrost thaw subsidence change detection in Arctic Alaska |
title_full_unstemmed |
Combining terrestrial, air-, and space-borne remote sensing for permafrost thaw subsidence change detection in Arctic Alaska |
title_sort |
combining terrestrial, air-, and space-borne remote sensing for permafrost thaw subsidence change detection in arctic alaska |
publisher |
American Geophysical Union |
publishDate |
2017 |
url |
https://epic.awi.de/id/eprint/45446/ https://agu.confex.com/agu/fm17/meetingapp.cgi/Paper/287620 https://hdl.handle.net/10013/epic.62e5ab23-1766-436f-bc00-003ef849304f |
genre |
Arctic Climate change Ice permafrost Thermokarst Alaska Siberia |
genre_facet |
Arctic Climate change Ice permafrost Thermokarst Alaska Siberia |
op_source |
EPIC3AGU Fall Meeting 2017, Ernest N. Morial Convention Center, New Orleans, Louisiana, USA, 2017-12-11-2017-12-15New Orleans, Louisiana, USA, American Geophysical Union |
op_relation |
Günther, F. orcid:0000-0001-8298-8937 , Grosse, G. orcid:0000-0001-5895-2141 , Ulrich, M. , Nitze, I. orcid:0000-0002-1165-6852 , Sachs, T. and Jones, B. M. (2017) Combining terrestrial, air-, and space-borne remote sensing for permafrost thaw subsidence change detection in Arctic Alaska , AGU Fall Meeting 2017, Ernest N. Morial Convention Center, New Orleans, Louisiana, USA, 11 December 2017 - 15 December 2017 . hdl:10013/epic.62e5ab23-1766-436f-bc00-003ef849304f |
op_rights |
info:eu-repo/semantics/openAccess |
_version_ |
1810293665516486656 |