Evaluation of the use of very high resolution aerial imagery for accurate ice-wedge polygon mapping (Adventdalen, Svalbard)
The main objective of this paper is to verify the accuracy of delineating and characterizing ice-wedge polygonal networks with features exclusively extracted from remotely sensed images of very high resolution. This kind of mapping plays a key role for quantifying ice-wedge degradation in warming pe...
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Online Access: | http://hdl.handle.net/10451/39115 https://doi.org/10.1016/j.scitotenv.2017.09.153 |
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ftunivlisboa:oai:repositorio.ul.pt:10451/39115 2023-05-15T13:05:37+02:00 Evaluation of the use of very high resolution aerial imagery for accurate ice-wedge polygon mapping (Adventdalen, Svalbard) Lousada, Maura Pina, Pedro Vieira, Gonçalo Bandeira, Lourenço Mora, Carla 2019-07-16T09:56:26Z http://hdl.handle.net/10451/39115 https://doi.org/10.1016/j.scitotenv.2017.09.153 eng eng Elsevier https://www.sciencedirect.com/science/article/pii/S0048969717324993?via%3Dihub Lousada, M., Pina, P., Vieira, G., Bandeira, L., Mora, C. (2018). Evaluation of the use of very high resolution aerial imagery for accurate ice-wedge polygon mapping (Adventdalen, Svalbard). Science of the Total Environment, 615, p. 1574-1583. DOI:10.1016/j.scitotenv.2017.09.153. 0048-9697 http://hdl.handle.net/10451/39115 doi:10.1016/j.scitotenv.2017.09.153 closedAccess Ice-wedge polygons Permafrost Delineation Mapping Remote sensing Geometry Topology article 2019 ftunivlisboa https://doi.org/10.1016/j.scitotenv.2017.09.153 2022-05-25T18:39:56Z The main objective of this paper is to verify the accuracy of delineating and characterizing ice-wedge polygonal networks with features exclusively extracted from remotely sensed images of very high resolution. This kind of mapping plays a key role for quantifying ice-wedge degradation in warming permafrost. The evaluation of mapping a network is performed in this study with two sets of aerial images that are compared to ground reference data determined by fieldwork on the same network, located in Adventdalen, Svalbard (78°N). One aerial dataset is obtained from a photogrammetric survey with RGB+NIR imagery of 20cm/pixel, the other from an UAV (Unmanned Aerial Vehicle) survey that acquired RGB images of 6cm/pixel of spatial resolution. Besides evaluating the degree of matching between the delineations, the morphometric and topological features computed for the differently mapped versions of the network are also confronted, to have a more solid basis of comparison. The results obtained are similar enough to admit that remotely sensed images of very high resolution are an adequate support to provide extensive characterizations and classifications of this kind of patterned ground. info:eu-repo/semantics/publishedVersion Article in Journal/Newspaper Adventdalen Ice permafrost Svalbard wedge* Universidade de Lisboa: repositório.UL Svalbard Adventdalen ENVELOPE(16.264,16.264,78.181,78.181) Science of The Total Environment 615 1574 1583 |
institution |
Open Polar |
collection |
Universidade de Lisboa: repositório.UL |
op_collection_id |
ftunivlisboa |
language |
English |
topic |
Ice-wedge polygons Permafrost Delineation Mapping Remote sensing Geometry Topology |
spellingShingle |
Ice-wedge polygons Permafrost Delineation Mapping Remote sensing Geometry Topology Lousada, Maura Pina, Pedro Vieira, Gonçalo Bandeira, Lourenço Mora, Carla Evaluation of the use of very high resolution aerial imagery for accurate ice-wedge polygon mapping (Adventdalen, Svalbard) |
topic_facet |
Ice-wedge polygons Permafrost Delineation Mapping Remote sensing Geometry Topology |
description |
The main objective of this paper is to verify the accuracy of delineating and characterizing ice-wedge polygonal networks with features exclusively extracted from remotely sensed images of very high resolution. This kind of mapping plays a key role for quantifying ice-wedge degradation in warming permafrost. The evaluation of mapping a network is performed in this study with two sets of aerial images that are compared to ground reference data determined by fieldwork on the same network, located in Adventdalen, Svalbard (78°N). One aerial dataset is obtained from a photogrammetric survey with RGB+NIR imagery of 20cm/pixel, the other from an UAV (Unmanned Aerial Vehicle) survey that acquired RGB images of 6cm/pixel of spatial resolution. Besides evaluating the degree of matching between the delineations, the morphometric and topological features computed for the differently mapped versions of the network are also confronted, to have a more solid basis of comparison. The results obtained are similar enough to admit that remotely sensed images of very high resolution are an adequate support to provide extensive characterizations and classifications of this kind of patterned ground. info:eu-repo/semantics/publishedVersion |
format |
Article in Journal/Newspaper |
author |
Lousada, Maura Pina, Pedro Vieira, Gonçalo Bandeira, Lourenço Mora, Carla |
author_facet |
Lousada, Maura Pina, Pedro Vieira, Gonçalo Bandeira, Lourenço Mora, Carla |
author_sort |
Lousada, Maura |
title |
Evaluation of the use of very high resolution aerial imagery for accurate ice-wedge polygon mapping (Adventdalen, Svalbard) |
title_short |
Evaluation of the use of very high resolution aerial imagery for accurate ice-wedge polygon mapping (Adventdalen, Svalbard) |
title_full |
Evaluation of the use of very high resolution aerial imagery for accurate ice-wedge polygon mapping (Adventdalen, Svalbard) |
title_fullStr |
Evaluation of the use of very high resolution aerial imagery for accurate ice-wedge polygon mapping (Adventdalen, Svalbard) |
title_full_unstemmed |
Evaluation of the use of very high resolution aerial imagery for accurate ice-wedge polygon mapping (Adventdalen, Svalbard) |
title_sort |
evaluation of the use of very high resolution aerial imagery for accurate ice-wedge polygon mapping (adventdalen, svalbard) |
publisher |
Elsevier |
publishDate |
2019 |
url |
http://hdl.handle.net/10451/39115 https://doi.org/10.1016/j.scitotenv.2017.09.153 |
long_lat |
ENVELOPE(16.264,16.264,78.181,78.181) |
geographic |
Svalbard Adventdalen |
geographic_facet |
Svalbard Adventdalen |
genre |
Adventdalen Ice permafrost Svalbard wedge* |
genre_facet |
Adventdalen Ice permafrost Svalbard wedge* |
op_relation |
https://www.sciencedirect.com/science/article/pii/S0048969717324993?via%3Dihub Lousada, M., Pina, P., Vieira, G., Bandeira, L., Mora, C. (2018). Evaluation of the use of very high resolution aerial imagery for accurate ice-wedge polygon mapping (Adventdalen, Svalbard). Science of the Total Environment, 615, p. 1574-1583. DOI:10.1016/j.scitotenv.2017.09.153. 0048-9697 http://hdl.handle.net/10451/39115 doi:10.1016/j.scitotenv.2017.09.153 |
op_rights |
closedAccess |
op_doi |
https://doi.org/10.1016/j.scitotenv.2017.09.153 |
container_title |
Science of The Total Environment |
container_volume |
615 |
container_start_page |
1574 |
op_container_end_page |
1583 |
_version_ |
1766389151820677120 |