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Mcginnis, D. F.

Wiesnet, D. R.

English

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Produced by the NASA Center for Aerospace Information (CASI) 
https://ntrs.nasa.gov/search.jsp?R=19760018530 2020-03-22T14:18:45+00:00Z
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Type II Progress Report	 6/16/76
"Made available under NASA sponsorship
in the interest of early and wide ds-
Evaluation of Lands al 	 Lain	
semination of Earth Resources Surveyfor
Selected Hydrologic Applications Program information and without liability
fOr any use made thereof,"
Donald R. Wiesnet, Principal Investigator
David F. McGinnis, Jr., Co?nvestigator
Michael C. McMillan, Associate
Michael Matson, Associate
NOAA/NESS/ESG
WWB, Room 810
Washington, D.C. 20233
(`'t-IJ1 73) EViL OAT IU 4 LF LA DSAT-2 DATA
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Landsat Investigation No. 23170
	 Contract No. NASL35991A
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iLandsat-2 Investigation No. 23170
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A. Problems
None
B. Accomplishments
1. Complete basic data set on March 1975 Phoenix test site soil
survey received from Texas A6M.
2. Landsat MSS 4 and MSS 6 digital data were compared with averaged
soil moisture values for bare and vegetated fields from the Phoenix
test site. Regression analyses produced a correlation coefficient of
r2 = 0.71 (r=.84) for a power fit of satellite MSS 4 radiance values
vs. averaged soil moisture for bare fields, and an r 2
 = .69 (r=.83) for
a similar fit of MSS 6 values. For vegetated fields, MSS 4 values
remained almost constant, not affected by vegetation type or soil
moisture. Using MSS 6 data, alfalfa fields increased in brightness as
soil moisture increased, providing an r 2
 = .88 (r=.94) for a parabolic
fit. Wheat field MSS 6 brightness varied little with moisture changes.
3. Aircraft M2S tapes received from NASA for October 1975 flight
over Luverne.
4. Snow mapping of American River basin for February 20, 1976 and
March 9, 1976 using Landsat imagery completed. Results and comparisons 	 1
are listed below:
% Snow Cover
Date	 MSS 5	 MSS 7	 SMS-2
Feb. 20, 1976
	 540
	
510
	
550
Mar. 9, 1976	 460
	
410
	
460
C. Significant Results
None
D. Publications
Received from Texas A6M
Blanchard, Bruce J., 1975, Ground Truth Report 1975 Phoenix
Microwave Experiment, Remote Sensing Center, College Station,
Texas
2Received from EG&G
Feimster, E.L. and Fritzsche, A.E., 1975, Soil Moisture Survey
Experiment at Luverne, Minnesota, EG&G, Las V egas, Nevada
E. Recommendations
None
F. Funds Expended
$7.6K remains of funds available for investigation.
G. Data Use
CCT tapes used in obtaining MSS 4 and MSS 7 radiance values for
Phoenix test site in March, 1975. 70 mm positive transparencies used
in mapping American River Basin snow cover for February 20, 1976 and
March 9, 1976.
poop
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Evaluation of LANDSAT-2 data for selected hydrologic applications

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