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

• Main Authors: Elizabeth M. Rudolph, K. Ian Meiklejohn, Christel D. Hansen, David W. Hedding, Werner Nel
• Format: Article in Journal/Newspaper
• Language: English
• Published: Polish Academy of Sciences 2018
• Subjects: east antarctica; jutulsessen; rock glacier; permafrost; climate change; Geology; QE1-996.5; Arctic; Antarctic; The Antarctic; Antarctic Peninsula; East Antarctica; Dronning Maud Land; Victoria Land; Ellsworth Mountains; Jutulsessen; Brugdedalen; Grjotlia; Grjotøyra; Jutuldalen; Vassdalen; Antarc*; Antarctica; Climate change; Ice; ice core; Polar Research
• Online Access: https://doi.org/10.24425/118736; https://doaj.org/article/613ff2d549f4402ea34da9aa0b621614

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.