Mapping subglacial surfaces of temperate valley glaciers by two-pass migration of a radio-echo sounding survey
High-resolution maps of the glacier bed are developed through a pseudo-three-dimensional migration of a dense array of radio-echo sounding profiles. Resolution of three-dimensional maps of sub-glacial surfaces is determined by the radio-echo sounding wavelength, data spacing in the field, and migrat...
| Main Authors: | , , , |
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| Format: | Text |
| Language: | unknown |
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ScholarWorks at University of Montana
1998
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| Subjects: | |
| Online Access: | https://scholarworks.umt.edu/geosci_pubs/23 https://scholarworks.umt.edu/context/geosci_pubs/article/1035/viewcontent/igs_journal_vol44_issue146_pg164_170.pdf |
| Summary: | High-resolution maps of the glacier bed are developed through a pseudo-three-dimensional migration of a dense array of radio-echo sounding profiles. Resolution of three-dimensional maps of sub-glacial surfaces is determined by the radio-echo sounding wavelength, data spacing in the field, and migration. Based on synthetic radio-echo sounding profile experiments, the maximum resolution of the final map cannot exceed one half-wavelength. A methodology of field and processing techniques is outlined to develop a maximum-resolution map of the glacier bed. The field and processing techniques valley glacier in south-central Alaska. The field techniques and the processing steps used on the glacier result in a map of 20 m x 20 m resolution. |
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