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SAVI (Soil Adjusted Vegetation Index) Image of 1985 Landsat Thematic Mapper Image
Identifier:86_1
Publication date:2001
Author(s):
William Stefanov
Abstract:
SAVI (Soil Adjusted Vegetation Index) map produced from the 1990 Landsat Thematic Mapper image,
Keywords:
Phoenix, Arizona, Sonoran Desert, caplter, Central Arizona Phoenix Longterm Ecological Research, urban, metropolitan area, Landsat TM, SAVI, Land-Use and Land-Cover Change, Database Remote Sensing GIS Applications, Land Use Changes, Project id 20, caplter created, gis, remote sensing, Primary Production
Temporal Coverage:
1985-05-01
Geographic Coverage:
Geographic Description:Phoenix metropolitan area
Bounding Coordinates:
Longitude:-112.78858 to -111.574142
Latitude:33.838126 to 33.186465
Contact:
Data Manager, Global Institute of Sustainability,
Arizona State University,PO Box 875401,Tempe
caplter.data@asu.edu
Methods used in producing this dataset:
SAVI computation
The raw Landsat image was clipped to CAPLTER, georeferenced to NAD27 datum and UTM zone 12 coordinate system. Additional preprocessing include atmospheric correction and radiometric calibration. The model of the following form is then applied: ( (NIR-RED) / (NIR+RED+L))*(1+L), where NIR (Near Infra-Red) is the TM band 4 (0.76-0.9 micrometers), RED is band 3 (0.78-0.82 micrometers), and L is the correction factor whose values range from 0 (high vegetation cover) to 1 (low vegetation). L=0.5 was used. The range of possible values is -1.4 to +1.4
Entities:
Raster: TM3737_5_85_savi
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Attributes:
Attribute:Value
Description:Index of vegetation density
Measurement Unit:dimensionless
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