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Evaluate erts imagery for mapping and detection of changes of snowcover on land and on glaciers (Document No: 19730003610)
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Copyright Year | 1972 |
| Description | The author has identified the following significant results. Preliminary results on the feasibility of mapping snow cover extent have been obtained from a limited number of ERTS-1 images of mountains in Alaska, British Columbia, and Washington. The snowline on land can be readily distinguished, except in heavy forest where such distinction appears to be virtually impossible. The snowline on very large glaciers can also be distinguished remarkably easily, leading to a convenient way to measure glacier accumulation area ratios or equilibrium line altitude. Monitoring of large surging glaciers appears to be possible, but only through observation of a change in area and/or medial moraine extent. Under certain conditions, ERTS-1 imagery appears to have high potential for mapping snow cover in mountainous areas. Distinction between snow and clouds appears to require use of the human eye, but in a cloud-free scene the snow cover is sufficiently distinct to allow use of automated techniques. This technique may prove very useful as an aid in the monitoring of the snowpack water resource and the prediction of summer snowmelt runoff volume. |
| File Size | 136815 |
| Page Count | 4 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19730003610 |
| Archival Resource Key | ark:/13960/t5dc2sv05 |
| Language | English |
| Publisher Date | 1972-10-24 |
| Access Restriction | Open |
| Subject Keyword | Geophysics Multispectral Band Scanners Earth Resources Program Data Processing Mapping Imagery Washington Land Mountains Canada Cloud Cover Alaska Glaciers Snow Cover Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
