ENVIRONMENTAL AUDITING: An Aquifer Vulnerability Assessment of the Paluxy Aquifer, Central Texas, USA, Using GIS and a Modified DRASTIC Approach.
Identifieur interne : 000493 ( PubMed/Checkpoint ); précédent : 000492; suivant : 000494ENVIRONMENTAL AUDITING: An Aquifer Vulnerability Assessment of the Paluxy Aquifer, Central Texas, USA, Using GIS and a Modified DRASTIC Approach.
Auteurs : Fritch [États-Unis] ; McKnight ; Yelderman ; ArnoldSource :
- Environmental management [ 1432-1009 ] ; 2000.
Abstract
/ The Paluxy aquifer in north-central Texas is composed primarily of Lower Cretaceous clastics. This aquifer provides water for both domestic and agricultural purposes in the region. The study area for this investigation incorporates the outcrop and recharge areas, as well as the confined and unconfined portions of the aquifer. The purpose of this investigation is to perform a groundwater vulnerability assessment on the Paluxy aquifer using the GRASS 4.1 geographic information system combined with a modified DRASTIC approach. DRASTIC is an acronym for the variables that control the groundwater pollution potential (Depth to water, net Recharge, Aquifer media, Soil media,Topography, Impact of the vadose zone, andConductivity of the aquifer). Using such an approach allows one to investigate the potential for groundwater contamination on a regional, rather than site-specific, scale. Based upon data from variables such as soil permeability, depth to water, aquifer hydraulic conductivity, and topography, subjective numerical weightings have been assigned according to the variable's relative importance in regional groundwater quality. The weights for each variable comprise a GIS map layer. These map layers are combined to formulate the final groundwater pollution potential map. Using this method of investigation, the pollution potential map for the study area classifies 47% of the area as having low pollution potential, 26% as having moderate pollution potential, 22% as having high pollution potential, and 5% as having very high pollution potential.
PubMed: 10629314
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Box 97354, Waco, Texas 76798-7354</wicri:regionArea><wicri:noRegion>Texas 76798-7354</wicri:noRegion></affiliation></author><author><name sortKey="Mcknight" sort="Mcknight" uniqKey="Mcknight" last="Mcknight">McKnight</name></author><author><name sortKey="Yelderman" sort="Yelderman" uniqKey="Yelderman" last="Yelderman">Yelderman</name></author><author><name sortKey="Arnold" sort="Arnold" uniqKey="Arnold" last="Arnold">Arnold</name></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2000">2000</date><idno type="RBID">pubmed:10629314</idno><idno type="pmid">10629314</idno><idno type="wicri:Area/PubMed/Corpus">000516</idno><idno type="wicri:explorRef" wicri:stream="PubMed" wicri:step="Corpus" wicri:corpus="PubMed">000516</idno><idno type="wicri:Area/PubMed/Curation">000516</idno><idno type="wicri:explorRef" wicri:stream="PubMed" wicri:step="Curation">000516</idno><idno type="wicri:Area/PubMed/Checkpoint">000516</idno><idno type="wicri:explorRef" wicri:stream="Checkpoint" wicri:step="PubMed">000516</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">ENVIRONMENTAL AUDITING: An Aquifer Vulnerability Assessment of the Paluxy Aquifer, Central Texas, USA, Using GIS and a Modified DRASTIC Approach.</title><author><name sortKey="Fritch" sort="Fritch" uniqKey="Fritch" last="Fritch">Fritch</name><affiliation wicri:level="1"><nlm:affiliation>Baylor University, Department of Geology, P.O. Box 97354, Waco, Texas 76798-7354, USA</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Baylor University, Department of Geology, P.O. Box 97354, Waco, Texas 76798-7354</wicri:regionArea><wicri:noRegion>Texas 76798-7354</wicri:noRegion></affiliation></author><author><name sortKey="Mcknight" sort="Mcknight" uniqKey="Mcknight" last="Mcknight">McKnight</name></author><author><name sortKey="Yelderman" sort="Yelderman" uniqKey="Yelderman" last="Yelderman">Yelderman</name></author><author><name sortKey="Arnold" sort="Arnold" uniqKey="Arnold" last="Arnold">Arnold</name></author></analytic><series><title level="j">Environmental management</title><idno type="eISSN">1432-1009</idno><imprint><date when="2000" type="published">2000</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">/ The Paluxy aquifer in north-central Texas is composed primarily of Lower Cretaceous clastics. This aquifer provides water for both domestic and agricultural purposes in the region. The study area for this investigation incorporates the outcrop and recharge areas, as well as the confined and unconfined portions of the aquifer. The purpose of this investigation is to perform a groundwater vulnerability assessment on the Paluxy aquifer using the GRASS 4.1 geographic information system combined with a modified DRASTIC approach. DRASTIC is an acronym for the variables that control the groundwater pollution potential (Depth to water, net Recharge, Aquifer media, Soil media,Topography, Impact of the vadose zone, andConductivity of the aquifer). Using such an approach allows one to investigate the potential for groundwater contamination on a regional, rather than site-specific, scale. Based upon data from variables such as soil permeability, depth to water, aquifer hydraulic conductivity, and topography, subjective numerical weightings have been assigned according to the variable's relative importance in regional groundwater quality. The weights for each variable comprise a GIS map layer. These map layers are combined to formulate the final groundwater pollution potential map. Using this method of investigation, the pollution potential map for the study area classifies 47% of the area as having low pollution potential, 26% as having moderate pollution potential, 22% as having high pollution potential, and 5% as having very high pollution potential.</div></front></TEI><pubmed><MedlineCitation Status="Publisher" Owner="NLM"><PMID Version="1">10629314</PMID><DateCreated><Year>2000</Year><Month>01</Month><Day>11</Day></DateCreated><DateRevised><Year>2000</Year><Month>01</Month><Day>11</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Electronic">1432-1009</ISSN><JournalIssue CitedMedium="Internet"><Volume>25</Volume><Issue>3</Issue><PubDate><Year>2000</Year><Month>Mar</Month></PubDate></JournalIssue><Title>Environmental management</Title><ISOAbbreviation>Environ Manage</ISOAbbreviation></Journal><ArticleTitle>ENVIRONMENTAL AUDITING: An Aquifer Vulnerability Assessment of the Paluxy Aquifer, Central Texas, USA, Using GIS and a Modified DRASTIC Approach.</ArticleTitle><Pagination><MedlinePgn>337-345</MedlinePgn></Pagination><Abstract><AbstractText>/ The Paluxy aquifer in north-central Texas is composed primarily of Lower Cretaceous clastics. This aquifer provides water for both domestic and agricultural purposes in the region. The study area for this investigation incorporates the outcrop and recharge areas, as well as the confined and unconfined portions of the aquifer. The purpose of this investigation is to perform a groundwater vulnerability assessment on the Paluxy aquifer using the GRASS 4.1 geographic information system combined with a modified DRASTIC approach. DRASTIC is an acronym for the variables that control the groundwater pollution potential (Depth to water, net Recharge, Aquifer media, Soil media,Topography, Impact of the vadose zone, andConductivity of the aquifer). Using such an approach allows one to investigate the potential for groundwater contamination on a regional, rather than site-specific, scale. Based upon data from variables such as soil permeability, depth to water, aquifer hydraulic conductivity, and topography, subjective numerical weightings have been assigned according to the variable's relative importance in regional groundwater quality. The weights for each variable comprise a GIS map layer. These map layers are combined to formulate the final groundwater pollution potential map. Using this method of investigation, the pollution potential map for the study area classifies 47% of the area as having low pollution potential, 26% as having moderate pollution potential, 22% as having high pollution potential, and 5% as having very high pollution potential.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Fritch</LastName><Initials>TG</Initials><AffiliationInfo><Affiliation>Baylor University, Department of Geology, P.O. Box 97354, Waco, Texas 76798-7354, USA</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>McKnight</LastName><Initials>CL</Initials></Author><Author ValidYN="Y"><LastName>Yelderman</LastName><Initials>JC</Initials><Suffix>Jr</Suffix></Author><Author ValidYN="Y"><LastName>Arnold</LastName><Initials>JG</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType></PublicationTypeList></Article><MedlineJournalInfo><Country>United States</Country><MedlineTA>Environ Manage</MedlineTA><NlmUniqueID>7703893</NlmUniqueID><ISSNLinking>0364-152X</ISSNLinking></MedlineJournalInfo></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="pubmed"><Year>2000</Year><Month>1</Month><Day>12</Day></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2000</Year><Month>1</Month><Day>12</Day></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2000</Year><Month>1</Month><Day>12</Day><Hour>0</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">10629314</ArticleId><ArticleId IdType="pii">9910026</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>États-Unis</li></country></list><tree><noCountry><name sortKey="Arnold" sort="Arnold" uniqKey="Arnold" last="Arnold">Arnold</name><name sortKey="Mcknight" sort="Mcknight" uniqKey="Mcknight" last="Mcknight">McKnight</name><name sortKey="Yelderman" sort="Yelderman" uniqKey="Yelderman" last="Yelderman">Yelderman</name></noCountry><country name="États-Unis"><noRegion><name sortKey="Fritch" sort="Fritch" uniqKey="Fritch" last="Fritch">Fritch</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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