View in EDS

Predicting the Three‐Dimensional Stratigraphy of an Ice Rise.

Saved in:
Bibliographic Details
Title: Predicting the Three‐Dimensional Stratigraphy of an Ice Rise.
Authors: Henry, A. C. J.1,2,3,4 (AUTHOR) clara.henry@math.su.se, Schannwell, C.1 (AUTHOR), Višnjević, V.2,5 (AUTHOR), Millstein, J.6 (AUTHOR), Bons, P. D.2 (AUTHOR), Eisen, O.7,8 (AUTHOR), Drews, R.2 (AUTHOR)
Source: Journal of Geophysical Research. Earth Surface. Jul2025, Vol. 130 Issue 7, p1-17. 17p.
Subject Terms: *Climate change, Ground penetrating radar, Ice formation & growth, Three-dimensional imaging, Ice mechanics, Antarctic climate, Event stratigraphy
Geographic Terms: East Antarctica (Antarctica), Antarctica
Abstract: Ice rises located in ice shelves around Antarctica act as pinning points, impeding the flow of ice in ice shelves and in the upstream ice sheet. Ice rises preserve records of past climate and associated changes in ice flow in their stratigraphy. Typically, the flow of ice in ice rises is characterized by both converging and diverging patterns, experiencing transitions from contact with bathymetric features to floating on the ocean. In this study, we develop a three‐dimensional ice flow model that is capable of simulating the internal stratigraphy of ice rises. The modeled stratigraphy can be compared with observed stratigraphy inferred from ground‐penetrating radar observations. The model simulates three‐dimensional ice flow described by the Stokes equations and evolution of ice temperature described by an advection‐diffusion equation that impacts the non‐linear ice rheology. We use our model to simulate the observed stratigraphy of Derwael Ice Rise in Dronning Maud Land, East Antarctica. Our results show a close agreement with the observed ice stratigraphy and suggest that the ice at 5% above the base is approximately 8,000 years old. Our new model enables us to relate the observed ice‐rise stratigraphy to the ice flow and its changes. Plain Language Summary: Ice rises are features which form in coastal Antarctica when the ice shelf comes into contact with the ground. These features provide a force on the ice shelf and can influence the position of the grounding line. We simulate an ice rise in East Antarctica called Derwael Ice Rise, outlining the steps necessary to model the three‐dimensional layers of an ice rise and compare the modeled layers with observed layers obtained from radar measurements. Comparisons between the observed and modeled layers allow us to validate our model. Our simulations are a step forward in the calculation of ice layers in Antarctica, which will allow reconstruction of past ice‐flow patterns. Key Points: We develop a three‐dimensional model to simulate the age distribution of an ice rise and the surrounding iceWe compare the modeled stratigraphy of an ice rise with the stratigraphy inferred from radar observationsWe develop a new model initialization technique that results in simulated ice velocities closely matching observations [ABSTRACT FROM AUTHOR]
Copyright of Journal of Geophysical Research. Earth Surface is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: GreenFILE
FullText Text:
  Availability: 0
Header DbId: 8gh
DbLabel: GreenFILE
An: 186955151
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: Predicting the Three‐Dimensional Stratigraphy of an Ice Rise.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Henry%2C+A%2E+C%2E+J%2E%22">Henry, A. C. J.</searchLink><relatesTo>1,2,3,4</relatesTo> (AUTHOR)<i> clara.henry@math.su.se</i><br /><searchLink fieldCode="AR" term="%22Schannwell%2C+C%2E%22">Schannwell, C.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Višnjević%2C+V%2E%22">Višnjević, V.</searchLink><relatesTo>2,5</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Millstein%2C+J%2E%22">Millstein, J.</searchLink><relatesTo>6</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Bons%2C+P%2E+D%2E%22">Bons, P. D.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Eisen%2C+O%2E%22">Eisen, O.</searchLink><relatesTo>7,8</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Drews%2C+R%2E%22">Drews, R.</searchLink><relatesTo>2</relatesTo> (AUTHOR)
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Journal+of+Geophysical+Research%2E+Earth+Surface%22">Journal of Geophysical Research. Earth Surface</searchLink>. Jul2025, Vol. 130 Issue 7, p1-17. 17p.
– Name: Subject
  Label: Subject Terms
  Group: Su
  Data: *<searchLink fieldCode="DE" term="%22Climate+change%22">Climate change</searchLink><br /><searchLink fieldCode="DE" term="%22Ground+penetrating+radar%22">Ground penetrating radar</searchLink><br /><searchLink fieldCode="DE" term="%22Ice+formation+%26+growth%22">Ice formation & growth</searchLink><br /><searchLink fieldCode="DE" term="%22Three-dimensional+imaging%22">Three-dimensional imaging</searchLink><br /><searchLink fieldCode="DE" term="%22Ice+mechanics%22">Ice mechanics</searchLink><br /><searchLink fieldCode="DE" term="%22Antarctic+climate%22">Antarctic climate</searchLink><br /><searchLink fieldCode="DE" term="%22Event+stratigraphy%22">Event stratigraphy</searchLink>
– Name: SubjectGeographic
  Label: Geographic Terms
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22East+Antarctica+%28Antarctica%29%22">East Antarctica (Antarctica)</searchLink><br /><searchLink fieldCode="DE" term="%22Antarctica%22">Antarctica</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Ice rises located in ice shelves around Antarctica act as pinning points, impeding the flow of ice in ice shelves and in the upstream ice sheet. Ice rises preserve records of past climate and associated changes in ice flow in their stratigraphy. Typically, the flow of ice in ice rises is characterized by both converging and diverging patterns, experiencing transitions from contact with bathymetric features to floating on the ocean. In this study, we develop a three‐dimensional ice flow model that is capable of simulating the internal stratigraphy of ice rises. The modeled stratigraphy can be compared with observed stratigraphy inferred from ground‐penetrating radar observations. The model simulates three‐dimensional ice flow described by the Stokes equations and evolution of ice temperature described by an advection‐diffusion equation that impacts the non‐linear ice rheology. We use our model to simulate the observed stratigraphy of Derwael Ice Rise in Dronning Maud Land, East Antarctica. Our results show a close agreement with the observed ice stratigraphy and suggest that the ice at 5% above the base is approximately 8,000 years old. Our new model enables us to relate the observed ice‐rise stratigraphy to the ice flow and its changes. Plain Language Summary: Ice rises are features which form in coastal Antarctica when the ice shelf comes into contact with the ground. These features provide a force on the ice shelf and can influence the position of the grounding line. We simulate an ice rise in East Antarctica called Derwael Ice Rise, outlining the steps necessary to model the three‐dimensional layers of an ice rise and compare the modeled layers with observed layers obtained from radar measurements. Comparisons between the observed and modeled layers allow us to validate our model. Our simulations are a step forward in the calculation of ice layers in Antarctica, which will allow reconstruction of past ice‐flow patterns. Key Points: We develop a three‐dimensional model to simulate the age distribution of an ice rise and the surrounding iceWe compare the modeled stratigraphy of an ice rise with the stratigraphy inferred from radar observationsWe develop a new model initialization technique that results in simulated ice velocities closely matching observations [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Geophysical Research. Earth Surface is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=8gh&AN=186955151
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1029/2024JF007924
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 17
        StartPage: 1
    Subjects:
      – SubjectFull: Climate change
        Type: general
      – SubjectFull: Ground penetrating radar
        Type: general
      – SubjectFull: Ice formation & growth
        Type: general
      – SubjectFull: Three-dimensional imaging
        Type: general
      – SubjectFull: Ice mechanics
        Type: general
      – SubjectFull: Antarctic climate
        Type: general
      – SubjectFull: Event stratigraphy
        Type: general
      – SubjectFull: East Antarctica (Antarctica)
        Type: general
      – SubjectFull: Antarctica
        Type: general
    Titles:
      – TitleFull: Predicting the Three‐Dimensional Stratigraphy of an Ice Rise.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Henry, A. C. J.
      – PersonEntity:
          Name:
            NameFull: Schannwell, C.
      – PersonEntity:
          Name:
            NameFull: Višnjević, V.
      – PersonEntity:
          Name:
            NameFull: Millstein, J.
      – PersonEntity:
          Name:
            NameFull: Bons, P. D.
      – PersonEntity:
          Name:
            NameFull: Eisen, O.
      – PersonEntity:
          Name:
            NameFull: Drews, R.
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 01
              M: 07
              Text: Jul2025
              Type: published
              Y: 2025
          Identifiers:
            – Type: issn-print
              Value: 21699003
          Numbering:
            – Type: volume
              Value: 130
            – Type: issue
              Value: 7
          Titles:
            – TitleFull: Journal of Geophysical Research. Earth Surface
              Type: main
ResultId 1