Mapping of Bottomfast Lake Ice in the Northwest Territories Via Data Mining of Synthetic Aperture Radar Image Time Series
Changes in climate, warming temperatures and increased precipitation are impacting surface water resources in the Northwest Territories, Canada. Satellite remote sensing is an important tool to monitor variability in lake surface area, but monitoring depth is challenging. The distribution of bottomf...
Published in: | Canadian Journal of Remote Sensing |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English French |
Published: |
Taylor & Francis Group
2019
|
Subjects: | |
Online Access: | https://doi.org/10.1080/07038992.2019.1680278 https://doaj.org/article/b425f4b07f9d41b290768d034e9de48e |
id |
ftdoajarticles:oai:doaj.org/article:b425f4b07f9d41b290768d034e9de48e |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:b425f4b07f9d41b290768d034e9de48e 2023-11-12T04:23:30+01:00 Mapping of Bottomfast Lake Ice in the Northwest Territories Via Data Mining of Synthetic Aperture Radar Image Time Series Olivier W. Tsui M. Chiang A. Dean 2019-09-01T00:00:00Z https://doi.org/10.1080/07038992.2019.1680278 https://doaj.org/article/b425f4b07f9d41b290768d034e9de48e EN FR eng fre Taylor & Francis Group http://dx.doi.org/10.1080/07038992.2019.1680278 https://doaj.org/toc/1712-7971 1712-7971 doi:10.1080/07038992.2019.1680278 https://doaj.org/article/b425f4b07f9d41b290768d034e9de48e Canadian Journal of Remote Sensing, Vol 45, Iss 5, Pp 572-590 (2019) Environmental sciences GE1-350 Technology T article 2019 ftdoajarticles https://doi.org/10.1080/07038992.2019.1680278 2023-10-15T00:36:30Z Changes in climate, warming temperatures and increased precipitation are impacting surface water resources in the Northwest Territories, Canada. Satellite remote sensing is an important tool to monitor variability in lake surface area, but monitoring depth is challenging. The distribution of bottomfast ice within a lake provides an indicator of depth and previous research shows that as lake ice develops and becomes bottomfast it exhibits a distinct signature when observed using multi-temporal Synthetic Aperture Radar (SAR) data. This research proposes an efficient computational technique for identifying bottom-fast ice across lakes in the Northwest Territories using multi-temporal SAR backscatter images and applies a function called dynamic time warping (DTW), which provides a shape-based similarity metric for time series data. We used backscatter profiles from surveyed lakes with known bottomfast ice to generate a DTW similarity metric on a pixel by pixel basis for a set of lakes. The similarity metric was used to categorize ice status as bottomfast or floating ice with 89.1% accuracy. DTW is an effective technique to map bottomfast ice using SAR time series and has potential to address limitations of other approaches where certain ice structures over deep lakes can produce backscatter responses similar to bottomfast ice. Article in Journal/Newspaper Northwest Territories Directory of Open Access Journals: DOAJ Articles Canada Northwest Territories Canadian Journal of Remote Sensing 45 5 572 590 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English French |
topic |
Environmental sciences GE1-350 Technology T |
spellingShingle |
Environmental sciences GE1-350 Technology T Olivier W. Tsui M. Chiang A. Dean Mapping of Bottomfast Lake Ice in the Northwest Territories Via Data Mining of Synthetic Aperture Radar Image Time Series |
topic_facet |
Environmental sciences GE1-350 Technology T |
description |
Changes in climate, warming temperatures and increased precipitation are impacting surface water resources in the Northwest Territories, Canada. Satellite remote sensing is an important tool to monitor variability in lake surface area, but monitoring depth is challenging. The distribution of bottomfast ice within a lake provides an indicator of depth and previous research shows that as lake ice develops and becomes bottomfast it exhibits a distinct signature when observed using multi-temporal Synthetic Aperture Radar (SAR) data. This research proposes an efficient computational technique for identifying bottom-fast ice across lakes in the Northwest Territories using multi-temporal SAR backscatter images and applies a function called dynamic time warping (DTW), which provides a shape-based similarity metric for time series data. We used backscatter profiles from surveyed lakes with known bottomfast ice to generate a DTW similarity metric on a pixel by pixel basis for a set of lakes. The similarity metric was used to categorize ice status as bottomfast or floating ice with 89.1% accuracy. DTW is an effective technique to map bottomfast ice using SAR time series and has potential to address limitations of other approaches where certain ice structures over deep lakes can produce backscatter responses similar to bottomfast ice. |
format |
Article in Journal/Newspaper |
author |
Olivier W. Tsui M. Chiang A. Dean |
author_facet |
Olivier W. Tsui M. Chiang A. Dean |
author_sort |
Olivier W. Tsui |
title |
Mapping of Bottomfast Lake Ice in the Northwest Territories Via Data Mining of Synthetic Aperture Radar Image Time Series |
title_short |
Mapping of Bottomfast Lake Ice in the Northwest Territories Via Data Mining of Synthetic Aperture Radar Image Time Series |
title_full |
Mapping of Bottomfast Lake Ice in the Northwest Territories Via Data Mining of Synthetic Aperture Radar Image Time Series |
title_fullStr |
Mapping of Bottomfast Lake Ice in the Northwest Territories Via Data Mining of Synthetic Aperture Radar Image Time Series |
title_full_unstemmed |
Mapping of Bottomfast Lake Ice in the Northwest Territories Via Data Mining of Synthetic Aperture Radar Image Time Series |
title_sort |
mapping of bottomfast lake ice in the northwest territories via data mining of synthetic aperture radar image time series |
publisher |
Taylor & Francis Group |
publishDate |
2019 |
url |
https://doi.org/10.1080/07038992.2019.1680278 https://doaj.org/article/b425f4b07f9d41b290768d034e9de48e |
geographic |
Canada Northwest Territories |
geographic_facet |
Canada Northwest Territories |
genre |
Northwest Territories |
genre_facet |
Northwest Territories |
op_source |
Canadian Journal of Remote Sensing, Vol 45, Iss 5, Pp 572-590 (2019) |
op_relation |
http://dx.doi.org/10.1080/07038992.2019.1680278 https://doaj.org/toc/1712-7971 1712-7971 doi:10.1080/07038992.2019.1680278 https://doaj.org/article/b425f4b07f9d41b290768d034e9de48e |
op_doi |
https://doi.org/10.1080/07038992.2019.1680278 |
container_title |
Canadian Journal of Remote Sensing |
container_volume |
45 |
container_issue |
5 |
container_start_page |
572 |
op_container_end_page |
590 |
_version_ |
1782338245442404352 |