The Global Fingerprint of Modern Ice‐Mass Loss on 3‐D Crustal Motion
Abstract Crustal motion generated by rapid ice‐mass loss from Earth's glaciers and ice sheets has previously been considered in Global Navigational Satellite System (GNSS) analyses and numerical models across regions of ice retreat. However, the fingerprint of ice‐mass loss is not limited to gl...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2021-08-01
|
| Series: | Geophysical Research Letters |
| Online Access: | https://doi.org/10.1029/2021GL095477 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850177807101984768 |
|---|---|
| author | Sophie Coulson Mila Lubeck Jerry X. Mitrovica Evelyn Powell James L. Davis Mark J. Hoggard |
| author_facet | Sophie Coulson Mila Lubeck Jerry X. Mitrovica Evelyn Powell James L. Davis Mark J. Hoggard |
| author_sort | Sophie Coulson |
| collection | DOAJ |
| description | Abstract Crustal motion generated by rapid ice‐mass loss from Earth's glaciers and ice sheets has previously been considered in Global Navigational Satellite System (GNSS) analyses and numerical models across regions of ice retreat. However, the fingerprint of ice‐mass loss is not limited to glaciated areas, but is characterized by a global pattern of 3‐D crustal deformation. We compute “far‐field” vertical and horizontal deformation rates that occurred in response to early 21st century mass flux from the Greenland and Antarctic Ice Sheets, global glaciers and ice caps, and associated ocean loading. We demonstrate that mass changes in the Greenland Ice Sheet and high latitude glacier systems each generated average crustal motion of 0.1–0.4 mm/yr across much of the Northern Hemisphere, with significant year‐to‐year variability in magnitude and direction. Horizontal motions associated with ice‐mass loss exceed vertical rates in many far‐field areas, and both should be considered in future analysis of GNSS measurements. |
| format | Article |
| id | doaj-art-db3f8ba3e4bb4a22b975191b6752b1cf |
| institution | OA Journals |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2021-08-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| spelling | doaj-art-db3f8ba3e4bb4a22b975191b6752b1cf2025-08-20T02:18:54ZengWileyGeophysical Research Letters0094-82761944-80072021-08-014816n/an/a10.1029/2021GL095477The Global Fingerprint of Modern Ice‐Mass Loss on 3‐D Crustal MotionSophie Coulson0Mila Lubeck1Jerry X. Mitrovica2Evelyn Powell3James L. Davis4Mark J. Hoggard5Department of Earth and Planetary Sciences Harvard University Cambridge MA USADepartment of Earth and Planetary Sciences Harvard University Cambridge MA USADepartment of Earth and Planetary Sciences Harvard University Cambridge MA USADepartment of Earth and Planetary Sciences Harvard University Cambridge MA USALamont‐Doherty Earth Observatory Columbia University Palisades NY USADepartment of Earth and Planetary Sciences Harvard University Cambridge MA USAAbstract Crustal motion generated by rapid ice‐mass loss from Earth's glaciers and ice sheets has previously been considered in Global Navigational Satellite System (GNSS) analyses and numerical models across regions of ice retreat. However, the fingerprint of ice‐mass loss is not limited to glaciated areas, but is characterized by a global pattern of 3‐D crustal deformation. We compute “far‐field” vertical and horizontal deformation rates that occurred in response to early 21st century mass flux from the Greenland and Antarctic Ice Sheets, global glaciers and ice caps, and associated ocean loading. We demonstrate that mass changes in the Greenland Ice Sheet and high latitude glacier systems each generated average crustal motion of 0.1–0.4 mm/yr across much of the Northern Hemisphere, with significant year‐to‐year variability in magnitude and direction. Horizontal motions associated with ice‐mass loss exceed vertical rates in many far‐field areas, and both should be considered in future analysis of GNSS measurements.https://doi.org/10.1029/2021GL095477 |
| spellingShingle | Sophie Coulson Mila Lubeck Jerry X. Mitrovica Evelyn Powell James L. Davis Mark J. Hoggard The Global Fingerprint of Modern Ice‐Mass Loss on 3‐D Crustal Motion Geophysical Research Letters |
| title | The Global Fingerprint of Modern Ice‐Mass Loss on 3‐D Crustal Motion |
| title_full | The Global Fingerprint of Modern Ice‐Mass Loss on 3‐D Crustal Motion |
| title_fullStr | The Global Fingerprint of Modern Ice‐Mass Loss on 3‐D Crustal Motion |
| title_full_unstemmed | The Global Fingerprint of Modern Ice‐Mass Loss on 3‐D Crustal Motion |
| title_short | The Global Fingerprint of Modern Ice‐Mass Loss on 3‐D Crustal Motion |
| title_sort | global fingerprint of modern ice mass loss on 3 d crustal motion |
| url | https://doi.org/10.1029/2021GL095477 |
| work_keys_str_mv | AT sophiecoulson theglobalfingerprintofmodernicemasslosson3dcrustalmotion AT milalubeck theglobalfingerprintofmodernicemasslosson3dcrustalmotion AT jerryxmitrovica theglobalfingerprintofmodernicemasslosson3dcrustalmotion AT evelynpowell theglobalfingerprintofmodernicemasslosson3dcrustalmotion AT jamesldavis theglobalfingerprintofmodernicemasslosson3dcrustalmotion AT markjhoggard theglobalfingerprintofmodernicemasslosson3dcrustalmotion AT sophiecoulson globalfingerprintofmodernicemasslosson3dcrustalmotion AT milalubeck globalfingerprintofmodernicemasslosson3dcrustalmotion AT jerryxmitrovica globalfingerprintofmodernicemasslosson3dcrustalmotion AT evelynpowell globalfingerprintofmodernicemasslosson3dcrustalmotion AT jamesldavis globalfingerprintofmodernicemasslosson3dcrustalmotion AT markjhoggard globalfingerprintofmodernicemasslosson3dcrustalmotion |