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dc.contributorDepartment of Land Surveying and Geo-Informaticsen_US
dc.creatorLai, WWLen_US
dc.creatorChang, RKWen_US
dc.creatorSham, JFCen_US
dc.creatorPang, Ken_US
dc.date.accessioned2016-06-07T06:37:55Z-
dc.date.available2016-06-07T06:37:55Z-
dc.identifier.issn0886-7798en_US
dc.identifier.urihttp://hdl.handle.net/10397/44090-
dc.language.isoenen_US
dc.publisherPergamon Pressen_US
dc.rights© 2015 Elsevier Ltd. All rights reserved.en_US
dc.rights© 2015. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/en_US
dc.rightsThe following publication Lai, W. W., Chang, R. K., Sham, J. F., & Pang, K. (2016). Perturbation mapping of water leak in buried water pipes via laboratory validation experiments with high-frequency ground penetrating radar (GPR). Tunnelling and Underground Space Technology, 52, 157-167 is available at https://doi.org/10.1016/j.tust.2015.10.017.en_US
dc.subjectGround penetrating radaren_US
dc.subjectWater leaken_US
dc.subjectWater perturbation patternsen_US
dc.titlePerturbation mapping of water leak in buried water pipes via laboratory validation experiments with high-frequency ground penetrating radar (GPR)en_US
dc.typeJournal/Magazine Articleen_US
dc.identifier.spage157en_US
dc.identifier.epage167en_US
dc.identifier.volume52en_US
dc.identifier.doi10.1016/j.tust.2015.10.017en_US
dcterms.abstractThis paper studies the perturbation patterns of GPR images as a tool for water leakage detection in buried water pipes with laboratory experiments. Different perturbations patterns on GPR signals due to a water leak of metallic and PVC pipes buried in a sand box, were mapped and studied with controlled water injection and leak volume, as well as a fixed leak position in the pipes. These perturbation patterns of signal strength include the tale-tell signs of a central leak point and propagation of the radial wetting front vortex centered around the leak point at different injection times. These patterns, compared to the no-leak dry condition, were interpreted with the conventional principles of dielectric contrast and reflection coefficients, and the associated reflection and absorption mechanisms. It is believed that this set of data will serve as an image matching fingerprint to identify and map water leaks in the field.en_US
dcterms.accessRightsopen accessen_US
dcterms.bibliographicCitationTunnelling and underground space technology, Feb. 2016, v. 52, p. 157-167en_US
dcterms.isPartOfTunnelling and underground space technologyen_US
dcterms.issued2016-02-
dc.identifier.isiWOS:000369201700016-
dc.identifier.scopus2-s2.0-84949882989-
dc.identifier.rosgroupid2015004550-
dc.description.ros2015-2016 > Academic research: refereed > Publication in refereed journalen_US
dc.description.oaAccepted Manuscripten_US
dc.identifier.FolderNumberLSGI-0460-
dc.description.fundingSourceRGCen_US
dc.description.pubStatusPublisheden_US
dc.identifier.OPUS6600600-
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