Glaciological observations of Brúarjökull, Iceland, using synthetic aperture radar and thematic mapper satellite data
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Abstract
The first European Remote Sensing Satellite (ERS-1) synthetic aperture radar (SAR) images offer opportunities for studying glacier surface properties and near-surface features. Analysis of back-scatter values from digital SAR data from 18 January, 7 June, 1 September and 25 October 1993 of Brúarjökull, an outlet glacier on the northeastern margin of the Vatnajökull ice cap, Iceland, that has a history of episodic surges, reveals several back-scatter boundaries that may relate to glacier facies and, inferentially, to mass balance. For example, a strong back-scatter boundary on the 18 January image of the snow-covered glacier, representing a back-scatter coefficient, σ°, difference of 4.34dB, appears to coincide with the position of the transient snow line at the end of the 1990–91 budget year. The boundary is visible on the 7 September 1991 Landsat thematic mapper (TM) image. The terminus is very difficult to define because of back-wasting from the last surge (1963–64) but is most easily delineated on the 1 September 1993 SAR and the 7 September 1991 TM images, in part due to the presence of ice-margin lakes.
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Glaciological observations of Brúarjökull, Iceland, using synthetic aperture radar and thematic mapper satellite data |
| Series title | Annals of Glaciology |
| DOI | 10.3189/S0260305500015937 |
| Volume | 21 |
| Year Published | 1995 |
| Language | English |
| Publisher | International Glaciological Society |
| Contributing office(s) | Woods Hole Coastal and Marine Science Center |
| Description | 6 p. |
| First page | 271 |
| Last page | 276 |
| Country | Iceland |
| Other Geospatial | Brúarjökull |
| Google Analytic Metrics | Metrics page |