Water balance of a tropical woodland ecosystem, Northern Australia: A combination of micro-meteorological, soil physical and groundwater chemical approaches

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dc.contributor.author Cook, PG
dc.contributor.author Hatton, TJ
dc.contributor.author Pidsley, D
dc.contributor.author Herczeg, AL
dc.contributor.author Held, A
dc.contributor.author O'Grady, A
dc.contributor.author Eamus, D
dc.date.accessioned 2011-02-07T06:19:47Z
dc.date.issued 1998-09
dc.identifier.citation Journal of Hydrology, 1998, 210 (1-4), pp. 161 - 177
dc.identifier.issn 0022-1694
dc.identifier.other C1UNSUBMIT en_US
dc.identifier.uri http://hdl.handle.net/10453/13213
dc.description.abstract A combination of micro-meteorological, soil physical and groundwater chemical methods enabled the water balance of a tropical eucalypt savanna ecosystem in Northern Australia to be estimated. Heat pulse and eddy correlation were used to determine overstory and total evapotranspiration, respectively. Measurements of soil water content, matric suction and water table variations were used to determine changes in soil moisture storage throughout the year. Groundwater dating with chlorofluorocarbons was used to estimate net groundwater recharge rates, and stream gauging was used to determine surface runoff. The wet season rainfall of 1585 mm is distributed as: evapotranspiration 810 mm, surface runoff (and shallow subsurface flow) into the river 410 mm, groundwater recharge 200 mm and increase in soil store 165 mm. Of the groundwater recharge, 160 mm enters the stream as baseflow in the wet season, 20 mm enters as baseflow in the dry season, and the balance (20 mm) is distributed to and used by minor vegetation types within the catchment or discharges to the sea. In the dry season, an evapotranspiration of 300 mm comprises 135 mm rainfall and 165 mm from the soil store. Because of the inherent errors of the different techniques, the water balance surplus (estimated at 20 mm) cannot be clearly distinguished from zero. It may also be as much as 140 min. To our knowledge, this is the first time that such diverse methods have been combined to estimate all components of a catchment's water balance.
dc.language eng
dc.publisher Elsevier Sci B.V.
dc.relation.isbasedon 10.1016/S0022-1694(98)00181-4
dc.title Water balance of a tropical woodland ecosystem, Northern Australia: A combination of micro-meteorological, soil physical and groundwater chemical approaches
dc.type Journal Article
dc.parent Journal of Hydrology
dc.journal.volume 1-4
dc.journal.volume 210
dc.journal.number 1-4 en_US
dc.publocation Amsterdam en_US
dc.identifier.startpage 161 en_US
dc.identifier.endpage 177 en_US
dc.cauo.name SCI.Environmental Sciences en_US
dc.conference Verified OK en_US
dc.for 0501 Ecological Applications
dc.personcode 000006
dc.percentage 100 en_US
dc.classification.name Ecological Applications en_US
dc.classification.type FOR-08 en_US
dc.edition en_US
dc.custom en_US
dc.date.activity en_US
dc.location.activity en_US
dc.description.keywords Evapotranspiration
dc.description.keywords Ground water
dc.description.keywords Hydrology
dc.description.keywords Recharge
dc.description.keywords Tropical environment
dc.description.keywords Water balance
pubs.embargo.period Not known
pubs.organisational-group /University of Technology Sydney
pubs.organisational-group /University of Technology Sydney/Faculty of Science
pubs.organisational-group /University of Technology Sydney/Faculty of Science/School of the Environment
utslib.copyright.status Closed Access
utslib.copyright.date 2015-04-15 12:17:09.805752+10
pubs.consider-herdc false

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