File Download
  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Uncertainties of Glacial Isostatic Adjustment Model Predictions in North America Associated With 3D Structure

TitleUncertainties of Glacial Isostatic Adjustment Model Predictions in North America Associated With 3D Structure
Authors
KeywordsGlacial Isostatic Adjustment
Uncertainties
3D structure
Lateral heterogeneity
North America
Issue Date2020
PublisherAmerican Geophysical Union. The Journal's web site is located at https://agupubs.onlinelibrary.wiley.com/journal/19448007
Citation
Geophysical Research Letters, 2020, v. 47 n. 10, p. article no. e2020GL087944 How to Cite?
AbstractWe quantify GIA prediction uncertainties of 250 1D and 3D glacial isostatic adjustment (GIA) models through comparisons with deglacial relative sea‐level (RSL) data from North America and rate of vertical land motion ( urn:x-wiley:00948276:media:grl60497:grl60497-math-0001) and gravity rate of change ( urn:x-wiley:00948276:media:grl60497:grl60497-math-0002) from GNSS and GRACE data, respectively. Spatially, the size of the RSL uncertainties varies across North America with the largest from Hudson Bay and near previous ice margins along the northern Atlantic and Pacific coasts, which suggests 3D viscosity structure in the lower mantle and laterally varying lithospheric thickness. Temporally, RSL uncertainties decrease from the Last Glacial Maximum to present except for west of Hudson Bay and the northeastern Pacific coast. The uncertainties of both these regions increase from 30 to 45 m between 15 and 11 ka BP, which may be due to the rapid decrease of surface loading at that time. Present‐day urn:x-wiley:00948276:media:grl60497:grl60497-math-0003 and urn:x-wiley:00948276:media:grl60497:grl60497-math-0004 uncertainties are largest in southwestern Hudson Bay with magnitudes of 2.4 mm/year and 0.4 μGal/year, mainly due to the 3D viscosity structure in the lower mantle.
Persistent Identifierhttp://hdl.handle.net/10722/286202
ISSN
2023 Impact Factor: 4.6
2023 SCImago Journal Rankings: 1.850
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorLi, T-
dc.contributor.authorWu, P-
dc.contributor.authorWang, H-
dc.contributor.authorSteffen, H-
dc.contributor.authorKhan, NS-
dc.contributor.authorEngelhart, SE-
dc.contributor.authorVacchi, M-
dc.contributor.authorShaw, TA-
dc.contributor.authorPeltier, WR-
dc.contributor.authorHorton, BP-
dc.date.accessioned2020-08-31T07:00:35Z-
dc.date.available2020-08-31T07:00:35Z-
dc.date.issued2020-
dc.identifier.citationGeophysical Research Letters, 2020, v. 47 n. 10, p. article no. e2020GL087944-
dc.identifier.issn0094-8276-
dc.identifier.urihttp://hdl.handle.net/10722/286202-
dc.description.abstractWe quantify GIA prediction uncertainties of 250 1D and 3D glacial isostatic adjustment (GIA) models through comparisons with deglacial relative sea‐level (RSL) data from North America and rate of vertical land motion ( urn:x-wiley:00948276:media:grl60497:grl60497-math-0001) and gravity rate of change ( urn:x-wiley:00948276:media:grl60497:grl60497-math-0002) from GNSS and GRACE data, respectively. Spatially, the size of the RSL uncertainties varies across North America with the largest from Hudson Bay and near previous ice margins along the northern Atlantic and Pacific coasts, which suggests 3D viscosity structure in the lower mantle and laterally varying lithospheric thickness. Temporally, RSL uncertainties decrease from the Last Glacial Maximum to present except for west of Hudson Bay and the northeastern Pacific coast. The uncertainties of both these regions increase from 30 to 45 m between 15 and 11 ka BP, which may be due to the rapid decrease of surface loading at that time. Present‐day urn:x-wiley:00948276:media:grl60497:grl60497-math-0003 and urn:x-wiley:00948276:media:grl60497:grl60497-math-0004 uncertainties are largest in southwestern Hudson Bay with magnitudes of 2.4 mm/year and 0.4 μGal/year, mainly due to the 3D viscosity structure in the lower mantle.-
dc.languageeng-
dc.publisherAmerican Geophysical Union. The Journal's web site is located at https://agupubs.onlinelibrary.wiley.com/journal/19448007-
dc.relation.ispartofGeophysical Research Letters-
dc.rightsGeophysical Research Letters. Copyright © American Geophysical Union.-
dc.rights©[2020]. American Geophysical Union. All Rights Reserved. This article is available at https://doi.org/10.1029/2020GL087944-
dc.rightsThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.-
dc.subjectGlacial Isostatic Adjustment-
dc.subjectUncertainties-
dc.subject3D structure-
dc.subjectLateral heterogeneity-
dc.subjectNorth America-
dc.titleUncertainties of Glacial Isostatic Adjustment Model Predictions in North America Associated With 3D Structure-
dc.typeArticle-
dc.identifier.emailKhan, NS: nskhan@hku.hk-
dc.identifier.authorityWu, P=rp01830-
dc.identifier.authorityKhan, NS=rp02561-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1029/2020GL087944-
dc.identifier.scopuseid_2-s2.0-85085505588-
dc.identifier.hkuros313248-
dc.identifier.volume47-
dc.identifier.issue10-
dc.identifier.spagearticle no. e2020GL087944-
dc.identifier.epagearticle no. e2020GL087944-
dc.identifier.isiWOS:000560372400001-
dc.publisher.placeUnited States-
dc.identifier.issnl0094-8276-

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats