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Application of Multitemporal Remotely Sensed Soil Moisture for the Estimation of Soil Physical PropertiesThis paper demonstrates the use of multitemporal soil moisture derived from microwave remote sensing to estimate soil physical properties. The passive microwave ESTAR instrument was employed during June 10-18, 1992, to obtain brightness temperature (TB) and surface soil moisture data in the Little Washita watershed, Oklahoma. Analyses of spatial and temporal variations of TB and soil moisture during the dry-down period revealed a direct relationship between changes in T and soil moisture and soil physical (viz. texture) and hydraulic (viz. saturated hydraulic conductivity, K(sat)) properties. Statistically significant regression relationships were developed for the ratio of percent sand to percent clay (RSC) and K(sat), in terms of change components of TB and surface soil moisture. Validation of results using field measured values and soil texture map indicated that both RSC and K(sat) can be estimated with reasonable accuracy. These findings have potential applications of microwave remote sensing to obtain quick estimates of the spatial distributions of K(sat), over large areas for input parameterization of hydrologic models.
Document ID
20000038130
Acquisition Source
Goddard Space Flight Center
Document Type
Reprint (Version printed in journal)
Authors
Mattikalli, N. M.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Engman, E. T.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Jackson, T. J.
(Agricultural Research Service Beltsville, MD United States)
Ahuja, L. R.
(Agricultural Research Service Fort Collins, CO United States)
Date Acquired
August 19, 2013
Publication Date
January 1, 1997
Publication Information
Publication: Laboratory for Hydrospheric Processes Research Publications
Subject Category
Earth Resources And Remote Sensing
Meeting Information
Meeting: Applications of Remote Sensing in Hydrology
Location: Greenbelt, MD
Country: United States
Start Date: October 16, 1996
End Date: October 18, 1996
Distribution Limits
Public
Copyright
Other

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