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Movement of the Ross Ice Shelf Near Scott Base

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Abstract:

The rate of movement of the Ross Ice Shelf has been determined at its terminal face to the south-east of Scott Base. An average rate of movement of 23 cm./day in a direction 270° True was determined for the period March 1957 to October 1958. The terminating face of the ice shelf in McMurdo Sound is only about 3 metres thick compared with a thickness of several hundred metres in the Ross Sea. Altimeter heights are used to demonstrate a thinning of the shelf which is attributed to melting from below.

Résumé.La vitesse de mouvement du Ross Ice Shelf a été determinée à son front au Sud-Est de la Base Scott. La vitesse moyenne est de 23 cm par jour en direction du gisement de 270° pour la période de mars 1957 à octobre 1958. L' épaisseur du front de l'ice-shelf à McMurdo Sound n'est que de trois mètres, alors qu'elle est de plusieurs centaines de mètres dans Ie Ross Sea. Les altitudes déterminées avec des altimèters sont utilisées pour démontrer un amincissement du shelf, attribué à la fonte sous-glaciaire.

Zusammenfassung.Die Bewegung des Ross Icc Shelfist in der Nähe seines Endes südöstlich der Scott Base gemessen worden. Es ergab sich eine durchschnittliche Bewegung von 23 cm/Tag in der Richtung 270° genau nach Nord für die Periode März 1957–Oktober 1958. Am Ende des Eisshelfs an der Scott Base ist die Front nur 3 m stark im Verhältnis zu mehreren Hundert Metern in der Ross Sea. Barometrische Höhen wurden gem essen urn die Verringerung der Dicke des Eisshelfs nachzuweisen. Diese Verringcrung der Dicke ist einem Schmelzen von unten her züzuschreiben.

Document Type: Research Article

Publication date: March 1, 1961

More about this publication?
  • The Journal of Glaciology is published six times per year. It accepts submissions from any discipline related to the study of snow and ice. All articles are peer reviewed. The Journal is included in the ISI Science Citation Index.
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