The geology, landforms and topography of Sub-Antarctic Macquarie Island, Australia, as revealed by AIRSAR

Ian Tapley*, Arjan H. Dijkstra, Henk Brolsma

*Corresponding author for this work

Research output: Contribution to conferencePaperAcademicpeer-review

3 Citations (Scopus)

Abstract

Enhancements of AIRSAR data are revealing an extraordinary amount of land-surface and geological information relevant to the island's genesis at a mid-ocean ridge, ongoing uplift and subsequent shaping of the surface by extensive faulting, wave action and active processes including freeze/thawing, wind and rain. Overlaying these enhancements on the TOPSAR DEM enables this active landscape to be analyzed in three dimensions. The level of detail indicates that the radar signals are penetrating the snow cover and being backscattered by the underlying surface of rock, lag gravels and vegetation. Drainage patterns, dammed lakes, levels of incision, fault structures, raised beach deposits and terraces, and possible evidence of glacial action can all be recognized in various enhancements of the AIRSAR data.

Original languageEnglish
Pages649-652
Number of pages4
DOIs
Publication statusPublished - 1 Dec 2004
Externally publishedYes
Event2004 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2004 - Anchorage, United States
Duration: 20 Sep 200424 Sep 2004

Conference

Conference2004 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2004
Abbreviated titleIGARSS 2004
CountryUnited States
CityAnchorage
Period20/09/0424/09/04

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