Method for detection of leads from Sentinel-1 SAR images
Source at https://doi.org/10.1017/aog.2018.6 . The presence of leads with open water or thin ice is an important feature of the Arctic sea ice cover. Leads regulate the heat, gas and moisture fluxes between the ocean and atmosphere and are areas of high ice growth rates during periods of freezing co...
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Online Access: | https://hdl.handle.net/10037/15023 https://doi.org/10.1017/aog.2018.6 |
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ftunivtroemsoe:oai:munin.uit.no:10037/15023 2023-05-15T13:29:14+02:00 Method for detection of leads from Sentinel-1 SAR images Murashkin, Dmitrii Spreen, Gunnar Huntemann, Marcus Dierking, Wolfgang Fritz Otto 2018-03-05 https://hdl.handle.net/10037/15023 https://doi.org/10.1017/aog.2018.6 eng eng Cambridge University Press (CUP) Annals of Glaciology Murashkin, D., Spreen, G., Huntemann, M. & Dierking, W.F.O. (2018). Method for detection of leads from Sentinel-1 SAR images. Annals of Glaciology, 59 (76), 124-136. https://doi.org/10.1017/aog.2018.6 FRIDAID 1627536 doi:10.1017/aog.2018.6 0260-3055 1727-5644 https://hdl.handle.net/10037/15023 openAccess VDP::Mathematics and natural science: 400::Geosciences: 450::Quaternary geology glaciology: 465 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Kvartærgeologi glasiologi: 465 ice/atmosphere interactions ice/ocean interactions remote sensing sea ice sea-ice dynamics Journal article Tidsskriftartikkel Peer reviewed 2018 ftunivtroemsoe https://doi.org/10.1017/aog.2018.6 2021-06-25T17:56:26Z Source at https://doi.org/10.1017/aog.2018.6 . The presence of leads with open water or thin ice is an important feature of the Arctic sea ice cover. Leads regulate the heat, gas and moisture fluxes between the ocean and atmosphere and are areas of high ice growth rates during periods of freezing conditions. Here, an algorithm providing an automatic lead detection based on synthetic aperture radar images is described that can be applied to a wide range of Sentinel-1 scenes. By using both the HH and the HV channels instead of single co-polarised observations the algorithm is able to classify more leads correctly. The lead classification algorithm is based on polarimetric features and textural features derived from the grey-level co-occurrence matrix. The Random Forest classifier is used to investigate the importance of the individual features for lead detection. The precision–recall curve representing the quality of the classification is used to define threshold for a binary lead/sea ice classification. The algorithm is able to produce a lead classification with more that 90% precision with 60% of all leads classified. The precision can be increased by the cost of the amount of leads detected. Results are evaluated based on comparisons with Sentinel-2 optical satellite data. Article in Journal/Newspaper Annals of Glaciology Arctic Sea ice University of Tromsø: Munin Open Research Archive Arctic Annals of Glaciology 59 76pt2 124 136 |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Mathematics and natural science: 400::Geosciences: 450::Quaternary geology glaciology: 465 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Kvartærgeologi glasiologi: 465 ice/atmosphere interactions ice/ocean interactions remote sensing sea ice sea-ice dynamics |
spellingShingle |
VDP::Mathematics and natural science: 400::Geosciences: 450::Quaternary geology glaciology: 465 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Kvartærgeologi glasiologi: 465 ice/atmosphere interactions ice/ocean interactions remote sensing sea ice sea-ice dynamics Murashkin, Dmitrii Spreen, Gunnar Huntemann, Marcus Dierking, Wolfgang Fritz Otto Method for detection of leads from Sentinel-1 SAR images |
topic_facet |
VDP::Mathematics and natural science: 400::Geosciences: 450::Quaternary geology glaciology: 465 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Kvartærgeologi glasiologi: 465 ice/atmosphere interactions ice/ocean interactions remote sensing sea ice sea-ice dynamics |
description |
Source at https://doi.org/10.1017/aog.2018.6 . The presence of leads with open water or thin ice is an important feature of the Arctic sea ice cover. Leads regulate the heat, gas and moisture fluxes between the ocean and atmosphere and are areas of high ice growth rates during periods of freezing conditions. Here, an algorithm providing an automatic lead detection based on synthetic aperture radar images is described that can be applied to a wide range of Sentinel-1 scenes. By using both the HH and the HV channels instead of single co-polarised observations the algorithm is able to classify more leads correctly. The lead classification algorithm is based on polarimetric features and textural features derived from the grey-level co-occurrence matrix. The Random Forest classifier is used to investigate the importance of the individual features for lead detection. The precision–recall curve representing the quality of the classification is used to define threshold for a binary lead/sea ice classification. The algorithm is able to produce a lead classification with more that 90% precision with 60% of all leads classified. The precision can be increased by the cost of the amount of leads detected. Results are evaluated based on comparisons with Sentinel-2 optical satellite data. |
format |
Article in Journal/Newspaper |
author |
Murashkin, Dmitrii Spreen, Gunnar Huntemann, Marcus Dierking, Wolfgang Fritz Otto |
author_facet |
Murashkin, Dmitrii Spreen, Gunnar Huntemann, Marcus Dierking, Wolfgang Fritz Otto |
author_sort |
Murashkin, Dmitrii |
title |
Method for detection of leads from Sentinel-1 SAR images |
title_short |
Method for detection of leads from Sentinel-1 SAR images |
title_full |
Method for detection of leads from Sentinel-1 SAR images |
title_fullStr |
Method for detection of leads from Sentinel-1 SAR images |
title_full_unstemmed |
Method for detection of leads from Sentinel-1 SAR images |
title_sort |
method for detection of leads from sentinel-1 sar images |
publisher |
Cambridge University Press (CUP) |
publishDate |
2018 |
url |
https://hdl.handle.net/10037/15023 https://doi.org/10.1017/aog.2018.6 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Annals of Glaciology Arctic Sea ice |
genre_facet |
Annals of Glaciology Arctic Sea ice |
op_relation |
Annals of Glaciology Murashkin, D., Spreen, G., Huntemann, M. & Dierking, W.F.O. (2018). Method for detection of leads from Sentinel-1 SAR images. Annals of Glaciology, 59 (76), 124-136. https://doi.org/10.1017/aog.2018.6 FRIDAID 1627536 doi:10.1017/aog.2018.6 0260-3055 1727-5644 https://hdl.handle.net/10037/15023 |
op_rights |
openAccess |
op_doi |
https://doi.org/10.1017/aog.2018.6 |
container_title |
Annals of Glaciology |
container_volume |
59 |
container_issue |
76pt2 |
container_start_page |
124 |
op_container_end_page |
136 |
_version_ |
1765999381718237184 |