File(s) not publicly available
Seafloor morphology and acoustic facies of the George V Land shelf
journal contribution
posted on 2023-05-16, 14:40 authored by Beaman, RJ, Harris, PTTo study the seafloor morphology on the George V Land shelf, East Antarctica, over 2000 km of high-frequency 3.5-27 kHz, echo-sounder data were collected between February and March 2000. The shelf can be divided into four acoustic facies: (a) Type IA-2 seabed is ice-keel turbate found on mid- to outer-shelf banks on seaftoor less than 500 m deep; (b) Type IB seabed is siliceous mud and diatom ooze drift, drape and fill deposits within the George V Basin between 750 and 850 m depth; (c) Type IIB seabed is smooth diamicton below 500 m depth, and occasionally has low-relief megaflutes or ridge and swale features; (d) Type IIIC seabed is high relief ridges and canyons from the coast to the deepest part of the George V Basin. The acoustic facies are explained in terms of glacial and oceanographic influences on the shelf since the Last Glacial Maximum. © 2003 Elsevier Science Ltd. All rights reserved.
History
Publication title
Deep Sea Research Part II: Topical Studies in OceanographyVolume
50Issue
8-9Pagination
1343-1355ISSN
0967-0645Department/School
School of Geography, Planning and Spatial SciencesPublisher
Pergamon-Elsevier Science LtdPlace of publication
Oxford, UKRepository Status
- Restricted