Contributions of Actual and Simulated Satellite SAR Data for Substrate Type Differentiation and Shoreline Mapping in the Canadian Arctic
Detailed information on the land cover types present and the horizontal position of the land–water interface is needed for sensitive coastal ecosystems throughout the Arctic, both to establish baselines against which the impacts of climate change can be assessed and to inform response operations in...
Published in: | Remote Sensing |
---|---|
Main Authors: | , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
MDPI AG
2017
|
Subjects: | |
Online Access: | https://doi.org/10.3390/rs9121206 https://doaj.org/article/f62e26098fb84be7a46f7858cc47eebf |
id |
ftdoajarticles:oai:doaj.org/article:f62e26098fb84be7a46f7858cc47eebf |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:f62e26098fb84be7a46f7858cc47eebf 2023-05-15T14:53:10+02:00 Contributions of Actual and Simulated Satellite SAR Data for Substrate Type Differentiation and Shoreline Mapping in the Canadian Arctic Sarah Banks Koreen Millard Amir Behnamian Lori White Tobias Ullmann Francois Charbonneau Zhaohua Chen Huili Wang Jon Pasher Jason Duffe 2017-11-01T00:00:00Z https://doi.org/10.3390/rs9121206 https://doaj.org/article/f62e26098fb84be7a46f7858cc47eebf EN eng MDPI AG https://www.mdpi.com/2072-4292/9/12/1206 https://doaj.org/toc/2072-4292 2072-4292 doi:10.3390/rs9121206 https://doaj.org/article/f62e26098fb84be7a46f7858cc47eebf Remote Sensing, Vol 9, Iss 12, p 1206 (2017) RADARSAT-2 RADARSAT Constellation Mission Random Forests Arctic shorelines Science Q article 2017 ftdoajarticles https://doi.org/10.3390/rs9121206 2022-12-31T11:23:00Z Detailed information on the land cover types present and the horizontal position of the land–water interface is needed for sensitive coastal ecosystems throughout the Arctic, both to establish baselines against which the impacts of climate change can be assessed and to inform response operations in the event of environmental emergencies such as oil spills. Previous work has demonstrated potential for accurate classification via fusion of optical and SAR data, though what contribution either makes to model accuracy is not well established, nor is it clear what shorelines can be classified using optical or SAR data alone. In this research, we evaluate the relative value of quad pol RADARSAT-2 and Landsat 5 data for shoreline mapping by individually excluding both datasets from Random Forest models used to classify images acquired over Nunavut, Canada. In anticipation of the RADARSAT Constellation Mission (RCM), we also simulate and evaluate dual and compact polarimetric imagery for shoreline mapping. Results show that SAR data is needed for accurate discrimination of substrates as user’s and producer’s accuracies were 5–24% higher for models constructed with quad pol RADARSAT-2 and DEM data than models constructed with Landsat 5 and DEM data. Models based on simulated RCM and DEM data achieved significantly lower overall accuracies (71–77%) than models based on quad pol RADARSAT-2 and DEM data (80%), with Wetland and Tundra being most adversely affected. When classified together with Landsat 5 and DEM data, however, model accuracy was less affected by the SAR data type, with multiple polarizations and modes achieving independent overall accuracies within a range acceptable for operational mapping, at 89–91%. RCM is expected to contribute positively to ongoing efforts to monitor change and improve emergency preparedness throughout the Arctic. Article in Journal/Newspaper Arctic Climate change Nunavut Tundra Directory of Open Access Journals: DOAJ Articles Arctic Canada Nunavut Remote Sensing 9 12 1206 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
RADARSAT-2 RADARSAT Constellation Mission Random Forests Arctic shorelines Science Q |
spellingShingle |
RADARSAT-2 RADARSAT Constellation Mission Random Forests Arctic shorelines Science Q Sarah Banks Koreen Millard Amir Behnamian Lori White Tobias Ullmann Francois Charbonneau Zhaohua Chen Huili Wang Jon Pasher Jason Duffe Contributions of Actual and Simulated Satellite SAR Data for Substrate Type Differentiation and Shoreline Mapping in the Canadian Arctic |
topic_facet |
RADARSAT-2 RADARSAT Constellation Mission Random Forests Arctic shorelines Science Q |
description |
Detailed information on the land cover types present and the horizontal position of the land–water interface is needed for sensitive coastal ecosystems throughout the Arctic, both to establish baselines against which the impacts of climate change can be assessed and to inform response operations in the event of environmental emergencies such as oil spills. Previous work has demonstrated potential for accurate classification via fusion of optical and SAR data, though what contribution either makes to model accuracy is not well established, nor is it clear what shorelines can be classified using optical or SAR data alone. In this research, we evaluate the relative value of quad pol RADARSAT-2 and Landsat 5 data for shoreline mapping by individually excluding both datasets from Random Forest models used to classify images acquired over Nunavut, Canada. In anticipation of the RADARSAT Constellation Mission (RCM), we also simulate and evaluate dual and compact polarimetric imagery for shoreline mapping. Results show that SAR data is needed for accurate discrimination of substrates as user’s and producer’s accuracies were 5–24% higher for models constructed with quad pol RADARSAT-2 and DEM data than models constructed with Landsat 5 and DEM data. Models based on simulated RCM and DEM data achieved significantly lower overall accuracies (71–77%) than models based on quad pol RADARSAT-2 and DEM data (80%), with Wetland and Tundra being most adversely affected. When classified together with Landsat 5 and DEM data, however, model accuracy was less affected by the SAR data type, with multiple polarizations and modes achieving independent overall accuracies within a range acceptable for operational mapping, at 89–91%. RCM is expected to contribute positively to ongoing efforts to monitor change and improve emergency preparedness throughout the Arctic. |
format |
Article in Journal/Newspaper |
author |
Sarah Banks Koreen Millard Amir Behnamian Lori White Tobias Ullmann Francois Charbonneau Zhaohua Chen Huili Wang Jon Pasher Jason Duffe |
author_facet |
Sarah Banks Koreen Millard Amir Behnamian Lori White Tobias Ullmann Francois Charbonneau Zhaohua Chen Huili Wang Jon Pasher Jason Duffe |
author_sort |
Sarah Banks |
title |
Contributions of Actual and Simulated Satellite SAR Data for Substrate Type Differentiation and Shoreline Mapping in the Canadian Arctic |
title_short |
Contributions of Actual and Simulated Satellite SAR Data for Substrate Type Differentiation and Shoreline Mapping in the Canadian Arctic |
title_full |
Contributions of Actual and Simulated Satellite SAR Data for Substrate Type Differentiation and Shoreline Mapping in the Canadian Arctic |
title_fullStr |
Contributions of Actual and Simulated Satellite SAR Data for Substrate Type Differentiation and Shoreline Mapping in the Canadian Arctic |
title_full_unstemmed |
Contributions of Actual and Simulated Satellite SAR Data for Substrate Type Differentiation and Shoreline Mapping in the Canadian Arctic |
title_sort |
contributions of actual and simulated satellite sar data for substrate type differentiation and shoreline mapping in the canadian arctic |
publisher |
MDPI AG |
publishDate |
2017 |
url |
https://doi.org/10.3390/rs9121206 https://doaj.org/article/f62e26098fb84be7a46f7858cc47eebf |
geographic |
Arctic Canada Nunavut |
geographic_facet |
Arctic Canada Nunavut |
genre |
Arctic Climate change Nunavut Tundra |
genre_facet |
Arctic Climate change Nunavut Tundra |
op_source |
Remote Sensing, Vol 9, Iss 12, p 1206 (2017) |
op_relation |
https://www.mdpi.com/2072-4292/9/12/1206 https://doaj.org/toc/2072-4292 2072-4292 doi:10.3390/rs9121206 https://doaj.org/article/f62e26098fb84be7a46f7858cc47eebf |
op_doi |
https://doi.org/10.3390/rs9121206 |
container_title |
Remote Sensing |
container_volume |
9 |
container_issue |
12 |
container_start_page |
1206 |
_version_ |
1766324585476653056 |