NDLI: Hcmm: soil moisture in relation to geologic structure and lithology, northern california. [sacramento valley, california

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Hcmm: soil moisture in relation to geologic structure and lithology, northern california. [sacramento valley, california

Content Provider	NASA Technical Reports Server (NTRS)
Copyright Year	1980
Description	The author has identified the following significant results. Empirical observations on the ground and examination of aerial color IR photographs indicate that in grassland terrain, the vegetation overlying sandstone tends to become less vigorous sooner in the late spring season than does the area overlain by an adjacent shale unit. The reverse relationship obtains in the fall. These relationships are thought to be a reflection of the relative porosity of each of the units and hence of their ability to retain or lose soil moisture. A comparison of the optically enlarged day and nite IR imagery of the Late Mesozoic interbedded sandstone and shale units along the western margin of the Sacramento Valley, California, taken at seasonally critical times of the year (late spring/early summer and late fall/early winter) reveals subtle seasonal variations of graytone which tend to support the empirical observations after consideration of Sun angle and azimuth, and the internal consistency of the data on each set of satellite imagery.
File Size	91079
Page Count	2
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19800017241
Archival Resource Key	ark:/13960/t6g20st8m
Language	English
Publisher Date	1980-04-21
Access Restriction	Open
Subject Keyword	Earth Resources And Remote Sensing Grasslands Earth Resources Program Soil Moisture Shales Aerial Photography California Heat Capacity Mapping Mission Infrared Imagery Thermal Mapping Sandstones Sacramento Valley Ca Structural Properties Geology Lithology Annual Variations Vegetation Signature Analysis 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

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