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Monitoring the vernal advancement and retrogradation (green wave effect) of natural vegetationThe 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.
Document ID
19740008955
Document Type
Contractor Report (CR)
Authors
Rouse, J. W., Jr. (Texas A&M Univ. College Station, TX, United States)
Date Acquired
September 3, 2013
Publication Date
January 27, 1974
Subject Category
GEOPHYSICS
Report/Patent Number
E74-10274
PR-6
NASA-CR-136660
Funding Number(s)
CONTRACT_GRANT: NAS5-21857
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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NameType 19740008955.pdf STI