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Periglacial Processes on Heard island, Southern Indian Ocean
Citation
Kiernan, K and McConnell, A, Periglacial Processes on Heard island, Southern Indian Ocean, Papers and Proceedings of the Royal Society of Tasmania, 142, (2) pp. 1-12. ISSN 0080-4703 (2008) [Refereed Article]
Abstract
Periglacial activity on Heard Island is manifested by intense physical weathering of the longest-exposed surfaces, and hillslope forms by a variety of cold-climate mass-wasting processes. Microrelief features include rudimentary sorted steps, terraces and polygons. No evidence of deep cryoturbation was obtained from excavations at 14 sites in moraines and no landforms indicative of discontinuous permafrost were identified. Periglacial landform development has been inhibited by the maritime climate and is more restricted than on other islands in the region due to the low alitude of the ice-free terrain, limited extent of glacier-free ground, and relatively recent deglaciation
Item Details
| Item Type: | Refereed Article |
|---|---|
| Keywords: | Periglacial processes; Cryoturbation; Frost action; Sorted polygons; Sorted terraces; Climatic warming |
| Research Division: | Earth Sciences |
| Research Group: | Physical Geography and Environmental Geoscience |
| Research Field: | Geomorphology and Regolith and Landscape Evolution |
| Objective Division: | Expanding Knowledge |
| Objective Group: | Expanding Knowledge |
| Objective Field: | Expanding Knowledge in the Earth Sciences |
| UTAS Author: | Kiernan, K (Dr Kevin Kiernan) |
| UTAS Author: | McConnell, A (Ms Anne McConnell) |
| ID Code: | 55108 |
| Year Published: | 2008 |
| Deposited By: | Geography and Environmental Studies |
| Deposited On: | 2009-03-05 |
| Last Modified: | 2009-03-19 |
| Downloads: | 0 |
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