Ocean Bottom Deformation Due To Present-Day Mass Redistribution and Its Impact on Sea Level Observations
Present-day mass redistribution increases the total ocean mass and, on average, causes the ocean bottom to subside elastically. Therefore, barystatic sea level rise is larger than the resulting global mean geocentric sea level rise, observed by satellite altimetry and GPS-corrected tide gauges. We u...
Published in: | Geophysical Research Letters |
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fttudelft:oai:tudelft.nl:uuid:9ca96469-6ca5-4df7-ae06-edf4b461e507 2024-04-28T08:10:32+00:00 Ocean Bottom Deformation Due To Present-Day Mass Redistribution and Its Impact on Sea Level Observations Frederikse, T. (author) Riva, R.E.M. (author) King, A. Matt (author) 2017-11-17 http://resolver.tudelft.nl/uuid:9ca96469-6ca5-4df7-ae06-edf4b461e507 https://doi.org/10.1002/2017GL075419 en eng http://www.scopus.com/inward/record.url?scp=85039557349&partnerID=8YFLogxK http://resolver.tudelft.nl/uuid:9ca96469-6ca5-4df7-ae06-edf4b461e507 Geophysical Research Letters--0094-8276--06456208-fd35-4a1a-bb03-32af520213ad https://doi.org/10.1002/2017GL075419 © 2017 T. Frederikse, R.E.M. Riva, A. Matt King Altimetry Elastic deformation GPS Ice mass loss Sea level Tide gauges journal article 2017 fttudelft https://doi.org/10.1002/2017GL075419 2024-04-09T23:48:09Z Present-day mass redistribution increases the total ocean mass and, on average, causes the ocean bottom to subside elastically. Therefore, barystatic sea level rise is larger than the resulting global mean geocentric sea level rise, observed by satellite altimetry and GPS-corrected tide gauges. We use realistic estimates of mass redistribution from ice mass loss and land water storage to quantify the resulting ocean bottom deformation and its effect on global and regional ocean volume change estimates. Over 1993-2014, the resulting globally averaged geocentric sea level change is 8% smaller than the barystatic contribution. Over the altimetry domain, the difference is about 5%, and due to this effect, barystatic sea level rise will be underestimated by more than 0.1 mm/yr over 1993-2014. Regional differences are often larger: up to 1 mm/yr over the Arctic Ocean and 0.4 mm/yr in the South Pacific. Ocean bottom deformation should be considered when regional sea level changes are observed in a geocentric reference frame. Physical and Space Geodesy Article in Journal/Newspaper Arctic Arctic Ocean Delft University of Technology: Institutional Repository Geophysical Research Letters 44 24 |
institution |
Open Polar |
collection |
Delft University of Technology: Institutional Repository |
op_collection_id |
fttudelft |
language |
English |
topic |
Altimetry Elastic deformation GPS Ice mass loss Sea level Tide gauges |
spellingShingle |
Altimetry Elastic deformation GPS Ice mass loss Sea level Tide gauges Frederikse, T. (author) Riva, R.E.M. (author) King, A. Matt (author) Ocean Bottom Deformation Due To Present-Day Mass Redistribution and Its Impact on Sea Level Observations |
topic_facet |
Altimetry Elastic deformation GPS Ice mass loss Sea level Tide gauges |
description |
Present-day mass redistribution increases the total ocean mass and, on average, causes the ocean bottom to subside elastically. Therefore, barystatic sea level rise is larger than the resulting global mean geocentric sea level rise, observed by satellite altimetry and GPS-corrected tide gauges. We use realistic estimates of mass redistribution from ice mass loss and land water storage to quantify the resulting ocean bottom deformation and its effect on global and regional ocean volume change estimates. Over 1993-2014, the resulting globally averaged geocentric sea level change is 8% smaller than the barystatic contribution. Over the altimetry domain, the difference is about 5%, and due to this effect, barystatic sea level rise will be underestimated by more than 0.1 mm/yr over 1993-2014. Regional differences are often larger: up to 1 mm/yr over the Arctic Ocean and 0.4 mm/yr in the South Pacific. Ocean bottom deformation should be considered when regional sea level changes are observed in a geocentric reference frame. Physical and Space Geodesy |
format |
Article in Journal/Newspaper |
author |
Frederikse, T. (author) Riva, R.E.M. (author) King, A. Matt (author) |
author_facet |
Frederikse, T. (author) Riva, R.E.M. (author) King, A. Matt (author) |
author_sort |
Frederikse, T. (author) |
title |
Ocean Bottom Deformation Due To Present-Day Mass Redistribution and Its Impact on Sea Level Observations |
title_short |
Ocean Bottom Deformation Due To Present-Day Mass Redistribution and Its Impact on Sea Level Observations |
title_full |
Ocean Bottom Deformation Due To Present-Day Mass Redistribution and Its Impact on Sea Level Observations |
title_fullStr |
Ocean Bottom Deformation Due To Present-Day Mass Redistribution and Its Impact on Sea Level Observations |
title_full_unstemmed |
Ocean Bottom Deformation Due To Present-Day Mass Redistribution and Its Impact on Sea Level Observations |
title_sort |
ocean bottom deformation due to present-day mass redistribution and its impact on sea level observations |
publishDate |
2017 |
url |
http://resolver.tudelft.nl/uuid:9ca96469-6ca5-4df7-ae06-edf4b461e507 https://doi.org/10.1002/2017GL075419 |
genre |
Arctic Arctic Ocean |
genre_facet |
Arctic Arctic Ocean |
op_relation |
http://www.scopus.com/inward/record.url?scp=85039557349&partnerID=8YFLogxK http://resolver.tudelft.nl/uuid:9ca96469-6ca5-4df7-ae06-edf4b461e507 Geophysical Research Letters--0094-8276--06456208-fd35-4a1a-bb03-32af520213ad https://doi.org/10.1002/2017GL075419 |
op_rights |
© 2017 T. Frederikse, R.E.M. Riva, A. Matt King |
op_doi |
https://doi.org/10.1002/2017GL075419 |
container_title |
Geophysical Research Letters |
container_volume |
44 |
container_issue |
24 |
_version_ |
1797578393123815424 |