| Title | Radar-derived bed roughness characterization of Institute and Möller ice streams, West Antarctica, and comparison with Sipple Coast ice streams |
| Author | Bingham, R.G.; Siegert, M.J. |
| Author Affil | Bingham, R.G., British Antarctic Survey, Natural Environment Research Council, Cambridge, United Kingdom. Other: University of Edinburgh, United Kingdom |
| Source | Geophysical Research Letters, 34(21), L21504. Publisher: American Geophysical Union, Washington, DC, United States. ISSN: 0094-8276 |
| Publication Date | Nov. 16, 2007 |
| Notes | In English. 31 refs. GeoRef Acc. No: 284348. CRREL Acc. No: 62004478 |
| Index Terms | solidification; erosion; glacial erosion; glacial geology; glacier flow; landforms; radar; sediments; Antarctica-- Filchner Ice Shelf; Antarctica--Ronne Ice Shelf; Antarctica--West Antarctica; Antarctica; consolidation; Filchner Ice Shelf; Filchner-Ronne Ice Shelf; ice movement; ice streams; Moller ice stream; outcrops; radar methods; Ronne Ice Shelf; roughness; Siple Coast; West Antarctica |
| Abstract | Subglacial bed conditions exert a significant control on ice stream behavior and evolution, and can be characterized by determining bed roughness from FFT analysis of radar-imaged basal reflectors. Here we assess bed roughness across Institute and Moller ice streams, West Antarctica, and compare our findings with bed roughness determined across the Siple Coast ice streams. We find that variations in bed roughness are spatially organized, and attribute this to the varying efficacy of subglacial erosion and deposition, with rougher regions largely manifesting preglacial topography, and smoother regions evincing significant postglacial modification to the subglacial landscape. (mod. journ. abst.) |
| URL | http://hdl.handle.net/10.1029/2007GL031483 |
| Publication Type | journal article |
| Record ID | 83980 |