English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
Add to Basket
 Local TagsRelease HistoryDetailsSummary
  Bathymetry-constrained impact of relative sea-level change on basal melting in Antarctica

Kreuzer, M., Albrecht, T., Nicola, L., Reese, R., & Winkelmann, R. (2025). Bathymetry-constrained impact of relative sea-level change on basal melting in Antarctica. The Cryosphere, 19(3): 19-1181-2025, pp. 1181-1203. doi:10.5194/tc-19-1181-2025.

Item is

 

show all

Basic

hide
Item Permalink: https://hdl.handle.net/21.11116/0000-0010-FEC4-3 Version Permalink: https://hdl.handle.net/21.11116/0000-0010-FEC5-2
Genre: Journal Article

Files

hide Files
:
gea0436.pdf (Publisher version), 6MB
View   Save
File Permalink:
https://hdl.handle.net/21.11116/0000-0010-FEC6-1
Name:
gea0436.pdf
Description:
-
OA-Status:
Gold
Visibility:
Public
MIME-Type / Checksum:
application/pdf / [MD5]
Technical Metadata:
View
Copyright Date:
-
Copyright Info:
-
License:
https://creativecommons.org/licenses/by/4.0/

Locators

hide
Locator:
Figure S1-S13, References (Supplementary material)
Description:
PDF. - (last seen: April 2025)
OA-Status:
Gold
Locator:
Data sets (Zenedo) (Supplementary material)
Description:
link. - (last seen: Aoril 2025)
OA-Status:
Gold
Locator:
Model code and software (Supplementary material)
Description:
link. - (last seen: Aoril 2025)
OA-Status:
Gold

Creators

hide
 Creators:
Kreuzer, Moritz, Author
Albrecht, Torsten1, Author           
Nicola, L., Author
Reese, R., Author
Winkelmann, Ricarda1, Author                 
Affiliations:
1Department of Integrative Earth System Science, Max Planck Institute of Geoanthropology, Max Planck Society, ou_3592376              

Content

hide
Free keywords: -
 Abstract: Relative sea level (local water depth) on the Antarctic continent is changing through the complex interplay of processes associated with glacial isostatic adjustment (GIA). This involves near-field viscoelastic bedrock displacement and gravitational effects in response to changes in Antarctic ice load but also far-field interhemispheric effects on the sea-level pattern. On glacial timescales, these changes can be of the order of several hundred meters, potentially affecting the access of ocean water masses at different depths to Antarctic grounding lines and ice-sheet margins. Due to strong vertical gradients in ocean temperature and salinity at the continental-shelf margin, basal melt rates of ice shelves have the potential to change just by variations in relative sea level alone. Based on simulated relative sea-level change from coupled ice-sheet–GIA model experiments and the analysis of topographic features such as troughs and sills that regulate the access of open-ocean water masses onto the continental shelf, we derive maximum estimates of Antarctic basal melt rate changes, solely driven by relative sea-level variations. Our results suggest that the effect of relative sea-level changes on basal melting is limited, especially compared to transient changes in the climate forcing.

Details

hide
Language(s): eng - English
 Dates: 2023-11-172024-11-062025-03-132025-03
 Publication Status: Issued
 Pages: 23
 Publishing info: -
 Table of Contents: 1 Introduction
2 Methods
2.1 Computation of RSL changes
2.1.1 Coupled ice-sheet–GIA model framework
2.1.2 RSL configurations
2.2 Identification of access depths
2.3 Calculation of marginal ocean properties
2.4 Computation of basal melt in ice-shelf cavities
2.5 Experiment design
3 Results
3.1 Changes in relative sea level
3.2 Changes in access depths
3.3 Present-day sensitivity experiments
3.4 Applied scenario experiments
4 Discussion
5 Conclusions
 Rev. Type: Peer
 Identifiers: DOI: 10.5194/tc-19-1181-2025
Other: gea0436
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

hide
Title: The Cryosphere
  Abbreviation : TC
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Copernicus Publications
Pages: - Volume / Issue: 19 (3) Sequence Number: 19-1181-2025 Start / End Page: 1181 - 1203 Identifier: ISSN: 1994-0416
Other: 1994-0424
CoNE: https://pure.mpg.de/cone/journals/resource/1994-0416