Remote sensing of runoff variability along the Texas Coast

dc.acquisition-srcDownloaded from-Aquatic Sciences and Fisheries Abstractsen_US
dc.call-noen_US
dc.contract-noen_US
dc.contributor.authorWalker HAen_US
dc.contributor.authorKeith DJen_US
dc.contributor.authorGodshall FAen_US
dc.contributor.authorBowen RDen_US
dc.contributor.authorEnvironmental Research Institute of Michigan Uen_US
dc.contributor.otheren_US
dc.date.accessioned2010-02-15T17:13:49Z
dc.date.available2010-02-15T17:13:49Z
dc.date.issued1997en_US
dc.degreeen_US
dc.description-en_US
dc.description-otheren_US
dc.description.abstractCoastal Texas contains numerous small rivers, lacustrine areas, and coastal lagoons which drain into local land areas. Seasonal and inter-annual variability in runoff from local land areas have important influences on the estuarine ecology in this region. Typically, such runoff variability is characterized utilizing river flow data from specific gauging stations; however, non-channelized water flow, regulated through variability in precipitation and evaporation may be of equal importance. Using biweekly Normalized Difference Vegetation Index (NDVI) data derived from the Advanced Very High Resolution Radiometer (A VHRR), the spatial and temporal variability of vegetation greeness in this region can be determined. Since NDVI is a synoptic measure that also incorporates many factors of land hydrology, additional correlative information on spatial and temporal variability in hydrology, not captured in the river flow data, may be derived. This pilot study investigated spatial and temporal relationships among precipitation, ground cover vegetation characteristics, NDVI, and river flow in relation to salinity changes in Galveston Bay during 1985 thru 1991. These relationships suggested that a large portion of the freshwater inflow to Galveston Bay must be from unchannelized flows that are related to land hydrology. Crosscorrelation of NDVI and salinity indicated that year-to-year changes in the monthly NDVI preceded variability in monthly salinity of Galveston Bay by several months. In contrast, gauged flow from the Trinity River, which empties directly into Galveston Bay was found to be more of a coincident indicator and it explained less of the observed variance in salinity. From these analyses, we conclude that variance in NDVI provides a correlative measure of non-channelized runoff in this region, and may have utility in other coastal areasen_US
dc.description.urihttp://gbic.tamug.edu/request.htmen_US
dc.historyen_US
dc.identifier.urihttp://hdl.handle.net/1969.3/22990
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dc.locationen_US
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dc.notes4. International Conference Remote Sensing for Marine and Coastal Environment: Technology and Applications, Orlando, Florida (USA), 17-19 Mar 1997Physical medium: Printed matter; Summary onlyEnglishBook Monograph; Conference; SummaryMarineKE1997en_US
dc.placeMichigan (USA)en_US
dc.publisheren_US
dc.relation.ispartofseries50512.00en_US
dc.relation.urien_US
dc.scaleen_US
dc.seriesProceedings of the Fourth International Conference on Remote Sensing for Marine and Coastal Environment: Technology and Applications. Vol. 2en_US
dc.subjectASW,USA,Texasen_US
dc.subjectCoastal lagoonsen_US
dc.subjectData Acquisitionen_US
dc.subjectEchosoundingen_US
dc.subjectEcologyen_US
dc.subjectElectromagnetic radiationen_US
dc.subjectEnvironmental effectsen_US
dc.subjectEnvironmental protectionen_US
dc.subjectGalveston Bayen_US
dc.subjectGeosensingen_US
dc.subjectHydrologyen_US
dc.subjectImageryen_US
dc.subjectInflowen_US
dc.subjectInfrared detectorsen_US
dc.subjectPrecipitationen_US
dc.subjectQ2 02167 Tides,surges and sea levelen_US
dc.subjectRadio oceanographyen_US
dc.subjectRemote sensing equipmenten_US
dc.subjectRiver Flowen_US
dc.subjectRiversen_US
dc.subjectRunoffen_US
dc.subjectSalinityen_US
dc.subjectTexasen_US
dc.subjectUSAen_US
dc.subjectVariabilityen_US
dc.subjectvegetationen_US
dc.subjectwateren_US
dc.titleRemote sensing of runoff variability along the Texas Coasten_US
dc.typeCONFen_US
dc.universityen_US
dc.vol-issue()en_US
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