Relation between planimetric and volumetric measurements of permafrost coast erosion: a case study from Herschel Island, western Canadian Arctic
Ice-rich permafrost coasts often undergo rapid erosion, which results in land loss and release of considerable amounts of sediment, organic carbon and nutrients, impacting the near-shore ecosystems. Because of the lack of volumetric erosion data, Arctic coastal erosion studies typically report on pl...
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WILEY-BLACKWELL PUBLISHING
2016
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Online Access: | https://epic.awi.de/id/eprint/41800/ https://epic.awi.de/id/eprint/41800/1/Obu_et_al_2016_Relation_between_planimetric_and_volumetric_measurements_of_permafrost_coast_erosion.pdf https://epic.awi.de/id/eprint/41800/2/Obu_et_al_2016_Supplement_Polar_Research.pdf https://hdl.handle.net/10013/epic.48633 https://hdl.handle.net/10013/epic.48633.d001 https://hdl.handle.net/10013/epic.48633.d002 |
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ftawi:oai:epic.awi.de:41800 2023-05-15T14:27:52+02:00 Relation between planimetric and volumetric measurements of permafrost coast erosion: a case study from Herschel Island, western Canadian Arctic Obu, Jaroslav Lantuit, Hugues Fritz, Michael Pollard, W. H. Sachs, Torsten Günther, Frank 2016-09-23 application/pdf https://epic.awi.de/id/eprint/41800/ https://epic.awi.de/id/eprint/41800/1/Obu_et_al_2016_Relation_between_planimetric_and_volumetric_measurements_of_permafrost_coast_erosion.pdf https://epic.awi.de/id/eprint/41800/2/Obu_et_al_2016_Supplement_Polar_Research.pdf https://hdl.handle.net/10013/epic.48633 https://hdl.handle.net/10013/epic.48633.d001 https://hdl.handle.net/10013/epic.48633.d002 unknown WILEY-BLACKWELL PUBLISHING https://epic.awi.de/id/eprint/41800/1/Obu_et_al_2016_Relation_between_planimetric_and_volumetric_measurements_of_permafrost_coast_erosion.pdf https://hdl.handle.net/10013/epic.48633.d001 https://epic.awi.de/id/eprint/41800/2/Obu_et_al_2016_Supplement_Polar_Research.pdf https://hdl.handle.net/10013/epic.48633.d002 Obu, J. , Lantuit, H. orcid:0000-0003-1497-6760 , Fritz, M. orcid:0000-0003-4591-7325 , Pollard, W. H. , Sachs, T. and Günther, F. orcid:0000-0001-8298-8937 (2016) Relation between planimetric and volumetric measurements of permafrost coast erosion: a case study from Herschel Island, western Canadian Arctic , Polar Research, 35 , p. 30313 . doi:10.3402/polar.v35.30313 <https://doi.org/10.3402/polar.v35.30313> , hdl:10013/epic.48633 EPIC3Polar Research, WILEY-BLACKWELL PUBLISHING, 35, pp. 30313, ISSN: 0800-0395 Article NonPeerReviewed 2016 ftawi https://doi.org/10.3402/polar.v35.30313 2022-08-14T23:12:30Z Ice-rich permafrost coasts often undergo rapid erosion, which results in land loss and release of considerable amounts of sediment, organic carbon and nutrients, impacting the near-shore ecosystems. Because of the lack of volumetric erosion data, Arctic coastal erosion studies typically report on planimetric erosion. Our aim is to explore the relationship between planimetric and volumetric coastal erosion measurements and to update the coastal erosion rates on Herschel Island in the Canadian Arctic. We used high-resolution digital elevation models to compute sediment release and compare volumetric data to planimetric estimations of coastline movements digitized from satellite imagery. Our results show that volumetric erosion is locally less variable and likely corresponds better with environmental forcing than planimetric erosion. Average sediment release volumes are in the same range as sediment release volumes calculated from coastline movements combined with cliff height. However, the differences between these estimates are significant for small coastal sections. We attribute the differences between planimetric and volumetric coastal erosion measurements to mass wasting, which is abundant along the coasts of Herschel Island. The average recorded coastline retreat on Herschel Island was 0.68 m a^-1 for the period 2000-2011. Erosion rates increased by more than 50% in comparison with the period 1970-2000, which is in accordance with a recently observed increase along the Alaskan Beaufort Sea. The estimated annual sediment release was 28.2 m³ m^-1 with resulting fluxes of 590 kg C m^-1 and 104 kg N m^-1. Article in Journal/Newspaper Arctic Arctic Beaufort Sea Herschel Island Ice permafrost Polar Research Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Arctic Herschel Island ENVELOPE(-139.089,-139.089,69.583,69.583) Polar Research 35 1 30313 |
institution |
Open Polar |
collection |
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
Ice-rich permafrost coasts often undergo rapid erosion, which results in land loss and release of considerable amounts of sediment, organic carbon and nutrients, impacting the near-shore ecosystems. Because of the lack of volumetric erosion data, Arctic coastal erosion studies typically report on planimetric erosion. Our aim is to explore the relationship between planimetric and volumetric coastal erosion measurements and to update the coastal erosion rates on Herschel Island in the Canadian Arctic. We used high-resolution digital elevation models to compute sediment release and compare volumetric data to planimetric estimations of coastline movements digitized from satellite imagery. Our results show that volumetric erosion is locally less variable and likely corresponds better with environmental forcing than planimetric erosion. Average sediment release volumes are in the same range as sediment release volumes calculated from coastline movements combined with cliff height. However, the differences between these estimates are significant for small coastal sections. We attribute the differences between planimetric and volumetric coastal erosion measurements to mass wasting, which is abundant along the coasts of Herschel Island. The average recorded coastline retreat on Herschel Island was 0.68 m a^-1 for the period 2000-2011. Erosion rates increased by more than 50% in comparison with the period 1970-2000, which is in accordance with a recently observed increase along the Alaskan Beaufort Sea. The estimated annual sediment release was 28.2 m³ m^-1 with resulting fluxes of 590 kg C m^-1 and 104 kg N m^-1. |
format |
Article in Journal/Newspaper |
author |
Obu, Jaroslav Lantuit, Hugues Fritz, Michael Pollard, W. H. Sachs, Torsten Günther, Frank |
spellingShingle |
Obu, Jaroslav Lantuit, Hugues Fritz, Michael Pollard, W. H. Sachs, Torsten Günther, Frank Relation between planimetric and volumetric measurements of permafrost coast erosion: a case study from Herschel Island, western Canadian Arctic |
author_facet |
Obu, Jaroslav Lantuit, Hugues Fritz, Michael Pollard, W. H. Sachs, Torsten Günther, Frank |
author_sort |
Obu, Jaroslav |
title |
Relation between planimetric and volumetric measurements of permafrost coast erosion: a case study from Herschel Island, western Canadian Arctic |
title_short |
Relation between planimetric and volumetric measurements of permafrost coast erosion: a case study from Herschel Island, western Canadian Arctic |
title_full |
Relation between planimetric and volumetric measurements of permafrost coast erosion: a case study from Herschel Island, western Canadian Arctic |
title_fullStr |
Relation between planimetric and volumetric measurements of permafrost coast erosion: a case study from Herschel Island, western Canadian Arctic |
title_full_unstemmed |
Relation between planimetric and volumetric measurements of permafrost coast erosion: a case study from Herschel Island, western Canadian Arctic |
title_sort |
relation between planimetric and volumetric measurements of permafrost coast erosion: a case study from herschel island, western canadian arctic |
publisher |
WILEY-BLACKWELL PUBLISHING |
publishDate |
2016 |
url |
https://epic.awi.de/id/eprint/41800/ https://epic.awi.de/id/eprint/41800/1/Obu_et_al_2016_Relation_between_planimetric_and_volumetric_measurements_of_permafrost_coast_erosion.pdf https://epic.awi.de/id/eprint/41800/2/Obu_et_al_2016_Supplement_Polar_Research.pdf https://hdl.handle.net/10013/epic.48633 https://hdl.handle.net/10013/epic.48633.d001 https://hdl.handle.net/10013/epic.48633.d002 |
long_lat |
ENVELOPE(-139.089,-139.089,69.583,69.583) |
geographic |
Arctic Herschel Island |
geographic_facet |
Arctic Herschel Island |
genre |
Arctic Arctic Beaufort Sea Herschel Island Ice permafrost Polar Research |
genre_facet |
Arctic Arctic Beaufort Sea Herschel Island Ice permafrost Polar Research |
op_source |
EPIC3Polar Research, WILEY-BLACKWELL PUBLISHING, 35, pp. 30313, ISSN: 0800-0395 |
op_relation |
https://epic.awi.de/id/eprint/41800/1/Obu_et_al_2016_Relation_between_planimetric_and_volumetric_measurements_of_permafrost_coast_erosion.pdf https://hdl.handle.net/10013/epic.48633.d001 https://epic.awi.de/id/eprint/41800/2/Obu_et_al_2016_Supplement_Polar_Research.pdf https://hdl.handle.net/10013/epic.48633.d002 Obu, J. , Lantuit, H. orcid:0000-0003-1497-6760 , Fritz, M. orcid:0000-0003-4591-7325 , Pollard, W. H. , Sachs, T. and Günther, F. orcid:0000-0001-8298-8937 (2016) Relation between planimetric and volumetric measurements of permafrost coast erosion: a case study from Herschel Island, western Canadian Arctic , Polar Research, 35 , p. 30313 . doi:10.3402/polar.v35.30313 <https://doi.org/10.3402/polar.v35.30313> , hdl:10013/epic.48633 |
op_doi |
https://doi.org/10.3402/polar.v35.30313 |
container_title |
Polar Research |
container_volume |
35 |
container_issue |
1 |
container_start_page |
30313 |
_version_ |
1766301919990513664 |