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<OAI-PMH schemaLocation=http://www.openarchives.org/OAI/2.0/ http://www.openarchives.org/OAI/2.0/OAI-PMH.xsd> <responseDate>2018-01-15T15:43:20Z</responseDate> <request identifier=oai:HAL:insu-00221380v1 verb=GetRecord metadataPrefix=oai_dc>http://api.archives-ouvertes.fr/oai/hal/</request> <GetRecord> <record> <header> <identifier>oai:HAL:insu-00221380v1</identifier> <datestamp>2018-01-11</datestamp> <setSpec>type:ART</setSpec> <setSpec>subject:sdu</setSpec> <setSpec>subject:sde</setSpec> <setSpec>collection:SDE</setSpec> <setSpec>collection:INSU</setSpec> <setSpec>collection:CNRS</setSpec> <setSpec>collection:GM</setSpec> <setSpec>collection:UNIV-RENNES1</setSpec> <setSpec>collection:OSUR</setSpec> <setSpec>collection:GIP-BE</setSpec> <setSpec>collection:GR9</setSpec> <setSpec>collection:GR</setSpec> <setSpec>collection:AGROPOLIS</setSpec> <setSpec>collection:UR1-SDLM</setSpec> <setSpec>collection:UR1-SDLMJONCH</setSpec> <setSpec>collection:UNIV-AG</setSpec> <setSpec>collection:UR1-HAL</setSpec> <setSpec>collection:GR-DIMENV</setSpec> <setSpec>collection:OSUR-OSU</setSpec> <setSpec>collection:B3ESTE</setSpec> <setSpec>collection:UNIV-MONTPELLIER</setSpec> </header> <metadata><dc> <publisher>HAL CCSD</publisher> <title lang=en>Comparison of alternative methodologies for identifying and characterizing preferential flow paths in heterogeneous aquifers</title> <creator>Le Borgne, Tanguy</creator> <creator>Bour, Olivier</creator> <creator>Riley, M.S.</creator> <creator>Gouze, Philippe</creator> <creator>Pezard, P.A.</creator> <creator>Belghoul, A.</creator> <creator>Lods, G.</creator> <creator>Le Provost, R.</creator> <creator>Al., Et</creator> <contributor>Géosciences Rennes (GR) ; Université de Rennes 1 (UR1) - Institut national des sciences de l'Univers (INSU - CNRS) - Centre Armoricain de Recherches en Environnement - Centre National de la Recherche Scientifique (CNRS)</contributor> <contributor>Géosciences Montpellier ; Université des Antilles et de la Guyane (UAG) - Institut national des sciences de l'Univers (INSU - CNRS) - Université de Montpellier (UM) - Centre National de la Recherche Scientifique (CNRS)</contributor> <description>International audience</description> <source>ISSN: 0022-1694</source> <source>Journal of Hydrology</source> <publisher>Elsevier</publisher> <identifier>insu-00221380</identifier> <identifier>https://hal-insu.archives-ouvertes.fr/insu-00221380</identifier> <source>https://hal-insu.archives-ouvertes.fr/insu-00221380</source> <source>Journal of Hydrology, Elsevier, 2007, 345 (3-4), pp.134-148. 〈10.1016/j.jhydrol.2007.07.007〉</source> <identifier>DOI : 10.1016/j.jhydrol.2007.07.007</identifier> <relation>info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jhydrol.2007.07.007</relation> <language>en</language> <subject lang=en>Fracture</subject> <subject lang=en>Connectivity</subject> <subject lang=en>Flowmeter</subject> <subject lang=en>Packer</subject> <subject lang=en>Geophysical measurements</subject> <subject>[SDU.STU.HY] Sciences of the Universe [physics]/Earth Sciences/Hydrology</subject> <subject>[SDE.MCG] Environmental Sciences/Global Changes</subject> <type>info:eu-repo/semantics/article</type> <type>Journal articles</type> <description lang=en>One of the main difficulties encountered when characterizing the hydrodynamic properties of a fractured aquifer is to identify the preferential flow paths within it. Different methods may be applied to determine the variability of the permeability at the borehole scale and to image the structure of the main flow zones between boreholes. In this paper, we compare the information obtained from different measurement techniques performed in a set of three 100 m depth wells (well-to-well spacing: 5­10 m) in a fractured crystalline rock setting. Geophysical logging and borehole-wall imaging are used to identify open and closed fractures intersecting the boreholes and their orientation. The comparison with flowmeter and single packer tests shows that few of the fractures interpreted as open from geophysical logs are significantly transmissive. Cross-borehole connectivity is first investigated from single packer tests with pressure monitoring in adjacent boreholes. To determine fracture zone connectivity, we propose a methodology simply based on the variation with packer depth of the ratio of the drawdown in the observation well and the drawdown in the pumping well. The results are compared to the analysis of cross-borehole flowmeter tests. We show that both methods provide consistent results with a similar level of information on connectivity.</description> <date>2007</date> </dc> </metadata> </record> </GetRecord> </OAI-PMH>