Details

Title

Rock glaciers in the Jutulsessen, Dronning Maud Land, East Antarctica

Journal title

Polish Polar Research

Yearbook

2018

Volume

vol. 39

Numer

No 1

Publication authors

Keywords

East Antarctica ; Jutulsessen ; rock glacier ; permafrost ; climate change

Divisions of PAS

Nauki o Ziemi

Abstract

Rock glaciers are lobate or tongue-shaped landforms which consist of rock debris and have either an ice core or an ice-cemented matrix. Characteristics such as the landscape setting, morphology, material and current geomorphological state are universally used to classify rock glaciers. In Antarctica, rock glaciers have only been surveyed on the Antarctic Peninsula, Ellsworth Mountains and in Victoria Land. This paper presents the first data on the identification and description of rock glaciers in the Jutulsessen nunataks, Dronning Maud Land, East Antarctica. The rock glaciers in the Jutulsessen exhibit a variety of morphologies and states. Our data suggests that the rock glaciers in Brugdedalen and Jutuldalen are active, while the features at Vassdalen and Grjotlia are considered inactive, and a feature at Grjotøyra is considered relict. The described rock glaciers do not fit into existing classification systems and appear to be different to alpine, Arctic and Andean rock glaciers. They further present examples that fit both the ‘glaciogenic’ and ‘permafrost’ development theories.

Publisher

Polish Academy of Sciences ; Committee on Polar Research

Date

2018.03.20

Type

Artykuły / Articles

Identifier

ISSN 0138-0338 ; eISSN 2081-8262

DOI

10.24425/118736

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