Loading...
Please wait, while we are loading the content...
Similar Documents
Monitoring the vernal advancement and retrogradation (green wave effect) of natural vegetation (Document No: 19740008955)
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Copyright Year | 1974 |
| Description | The author has identified the following significant results. Primary emphasis during the period has been given to completing the resource and land use mask overlays for ultimate subsite MSS data extraction and analysis, refining the computer mask program, verifying resultant masks, and evaluating the initial subsite data. Standard deviations for the selected subsites were generally reduced significantly when compared to the values for the overall 7km x 7km test site areas. This indicates that the masking technique has been successful in reducing the variability of the ERTS-1 MSS data for ultimate subsite comparisons with ground data. The techniques used to locate the 7km x 7km test site areas and extract masked subsite data apparently limit the ability to reliably locate identical very small subsite areas for temporal comparisons. Current evidence indicates that areas which include less than about four pixel elements in either dimension are probably unreliable. |
| File Size | 250683 |
| Page Count | 10 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19740008955 |
| Archival Resource Key | ark:/13960/t47q3rn7f |
| Language | English |
| Publisher Date | 1974-01-27 |
| Access Restriction | Open |
| Subject Keyword | Geophysics Resources Management Multispectral Band Scanners Earth Resources Program Annual Variations Vegetation Agriculture Rangelands Great Plains Corridor North America Land Use 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 |
