Skip to main content Accessibility help
×
Home

Contents:

Information:

  • Access

Actions:

      • Send article to Kindle

        To send this article to your Kindle, first ensure no-reply@cambridge.org is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about sending to your Kindle. Find out more about sending to your Kindle.

        Note you can select to send to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be sent to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.

        Find out more about the Kindle Personal Document Service.

        Computer Simulation of the Ice Sheet in the Shirase Basin, Antarctica (Abstract)
        Available formats
        ×

        Send article to Dropbox

        To send this article to your Dropbox account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Dropbox.

        Computer Simulation of the Ice Sheet in the Shirase Basin, Antarctica (Abstract)
        Available formats
        ×

        Send article to Google Drive

        To send this article to your Google Drive account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Google Drive.

        Computer Simulation of the Ice Sheet in the Shirase Basin, Antarctica (Abstract)
        Available formats
        ×
Export citation

A three-dimensional numerical model is developed to simulate the variation with time of the form of the ice sheet in the Shirase basin, Antarctica (Fig.1). The model is composed of two-dimensional grids on which the mass flux of ice is computed so as to satisfy the equation of continuity. Local conditions of the flow of ice, particularly the effect of the depth profile of temperature, are considered. Adopting a simple method for calculating the mass flux developed by the” same authors (Nagao and others 1982) procedures of numerical calculations are simplified. Areal grids of 50 km distances covering the basin are used, paying special attention to the boundary conditions at its margin and glacier tongue.

Results of the calculations show that a nearly stable form of the ice sheet could be obtained after approximately 10 ka when started from 1000 m ice thickness all over the basin. The obtained stable surface topography shows its sensitive dependence on the bedrock topography. There was a tendency for the bottom temperature of the glacier downstream to be higher than the melting point, which may confirm the suggested instability of the ice sheet near the central stream line of Shirase Glacier (Mae 1979).

References

Mae, S 1979 The basal sliding of a thinning ice sheet, Mizuko Plateau, East Antarctica. Journal of Glaciology 24(90): 5361
Nagao, M, Nakawo, M, Higashi, A 1982 A simple method for calculating mass flux in an ice sheet, with a consideration of its temperature profile. Memoirs of National Institute of Polar Research. Special Issue 24: 192200