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Evaluate erts imagery for mapping and detection of changes of snowcover on land and on glaciers (Document No: 19730010647)
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Copyright Year | 1973 |
| Description | The author has identified the following significant results. The percentage of snow cover area on specific drainage basins was measured from ERTS-1 imagery by video density slicing with a repeatability of 4 percent of the snow covered area. Data from ERTS-1 images of the melt season snow cover in the Thunder Creek drainage basin in the North Cascades were combined with existing hydrologic and meteorologic observations to enable calculations of the time distribution of the water stored in this mountain snowpack. Similar data could be used for frequent updating of expected inflow to reservoirs. Equivalent snowline altitudes were determined from area measurements. Snowline altitudes were also determined by combining enlarged ERTS-1 images with maps. ERTS-1 imagery was also successfully used to measure glacier accumulation area ratios for a small test basin. |
| File Size | 131163 |
| Page Count | 3 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19730010647 |
| Archival Resource Key | ark:/13960/t91882j9q |
| Language | English |
| Publisher Date | 1973-02-27 |
| Access Restriction | Open |
| Subject Keyword | Geophysics Drainage Hydrology Earth Resources Program Cascade Range Ca-or-wa Mapping Glaciers Snow Cover Imagery River Basins Land 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 |
