Small-scale spatial variability of soil moisture and hydraulic conductivity in a semi-arid rangeland soil in Arizona.

Persistent Link:
http://hdl.handle.net/10150/192081
Title:
Small-scale spatial variability of soil moisture and hydraulic conductivity in a semi-arid rangeland soil in Arizona.
Author:
Whitaker, Martha Patricia Lee,1965-
Issue Date:
1993
Publisher:
The University of Arizona.
Rights:
Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
Abstract:
The correlation scales of soil moisture and hydraulic conductivity were investigated within a 4.4 hectare semi-arid rangeland watershed using measurements obtained from time domain reflectometry and disc permeameters, respectively. Soil moisture measurements were collected at four different times in 1991 to yield a varied set of natural soil moisture conditions. Soil moisture was sampled over a 30 meter grid, two perpendicular transects at 5 meter intervals, once at 1 meter intervals, and once at intervals of — 0.10 m within a 1 xl meter plot. Variogram functions showed evidence of spatial correlation only when the grid and perpendicular transect data were combined. A total of 30 measurements each of saturated and unsaturated hydraulic conductivity were collected along a 300 meter curvilinear transect at approximately 10 meter intervals. Although spatial correlation was evident, variogram resolution may possibly be improved by obtaining more measurements.
Type:
Thesis-Reproduction (electronic); text
LCSH Subjects:
Hydrology.; Soil moisture -- Arizona.; Soils -- Arid regions.
Degree Name:
M.S.
Degree Level:
masters
Degree Program:
Hydrology and Water Resources; Graduate College
Degree Grantor:
University of Arizona
Committee Chair:
Goodrich, David C.; Sully, Michael J.

Full metadata record

DC FieldValue Language
dc.language.isoenen_US
dc.titleSmall-scale spatial variability of soil moisture and hydraulic conductivity in a semi-arid rangeland soil in Arizona.en_US
dc.creatorWhitaker, Martha Patricia Lee,1965-en_US
dc.contributor.authorWhitaker, Martha Patricia Lee,1965-en_US
dc.date.issued1993en_US
dc.publisherThe University of Arizona.en_US
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.en_US
dc.description.abstractThe correlation scales of soil moisture and hydraulic conductivity were investigated within a 4.4 hectare semi-arid rangeland watershed using measurements obtained from time domain reflectometry and disc permeameters, respectively. Soil moisture measurements were collected at four different times in 1991 to yield a varied set of natural soil moisture conditions. Soil moisture was sampled over a 30 meter grid, two perpendicular transects at 5 meter intervals, once at 1 meter intervals, and once at intervals of — 0.10 m within a 1 xl meter plot. Variogram functions showed evidence of spatial correlation only when the grid and perpendicular transect data were combined. A total of 30 measurements each of saturated and unsaturated hydraulic conductivity were collected along a 300 meter curvilinear transect at approximately 10 meter intervals. Although spatial correlation was evident, variogram resolution may possibly be improved by obtaining more measurements.en_US
dc.description.notehydrology collectionen_US
dc.typeThesis-Reproduction (electronic)en_US
dc.typetexten_US
dc.subject.lcshHydrology.en_US
dc.subject.lcshSoil moisture -- Arizona.en_US
dc.subject.lcshSoils -- Arid regions.en_US
thesis.degree.nameM.S.en_US
thesis.degree.levelmastersen_US
thesis.degree.disciplineHydrology and Water Resourcesen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.chairGoodrich, David C.en_US
dc.contributor.chairSully, Michael J.en_US
dc.identifier.oclc221706928en_US
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