The Application of Optical Filtering in Coherent Light to the Study of Aerial Photographs of Greenland Glaciers

Author:

Bauer A.,Fontanel A.,Grau G.

Abstract

The principles that underlie the analysis of aerial photographs using the coherent light from a laser are summarized, and then a study of such a filtering technique applied to an aerial photograph of Jakobshavn Isbræ is given as an example. Two systems of crevasses, respectively parallel and perpendicular to the direction of flow of the southern lobe of the glacier can be detected after filtering. These two crevasse systems were not apparent at first sight on the original photograph as they were obliterated by a network of curved crevasses. It appears that this latter network are not true crevasses, but surface undulations formed by differential ablation of bands of black (or blue) and white ice.

Publisher

Cambridge University Press (CUP)

Subject

Earth-Surface Processes

Cited by 7 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. THE AIR PHOTOGRAPH REQUIREMENTS OF GEOLOGISTS;The Photogrammetric Record;2006-08-26

2. The Jakobshanvs effect;Geophysical Research Letters;1986-01

3. Spectral and spatial image processing for remote sensing;International Journal of Remote Sensing;1980-10

4. Possible applications of photogeology to the study of rock mechanics;Quarterly Journal of Engineering Geology and Hydrogeology;1974-05

5. Bibliography;Holography;1974

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