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dc.creatorAraya, Luis
dc.creatorBunster Weitzmann, Claudio Moises
dc.creatorCasassa Rogazinski, Gino
dc.creatorMella Pineda, Ronald Andres
dc.creatorNeira, Guillermo
dc.creatorOrdenes Silva, Fernando Ruben
dc.creatorRivera Ibañez, Sergio Andres
dc.creatorZamora Maric, Rodrigo Eduardo
dc.date.accessioned2016-12-27T21:51:01Z
dc.date.available2016-12-27T21:51:01Z
dc.date.issued2007
dc.identifier.isbn1901502392
dc.identifier.isbn978-1901502398
dc.identifier.urihttp://hdl.handle.net/10533/165740
dc.description.abstractDetection of crevasses is critical for safe travelling on glaciers. Here we present the use of a Ground Penetrating Radar (GPR) for crevasse detection. Experiments were made in temperate ice on Glaciar Mocho, Volcán Mocho-Choshuenco, southern Chile (39°25'S) and in cold ice in East Antarctica (87°30'S). In southern Chile the radar was hand-carried 1.2 m in front of the operator who was walking over the glacier at a speed of ~0.5 m s -1 , while in Antarctica it was mounted on a 7 m-long rod in front of a tractor convoy travelling at a speed of ~2 m s -1 . In both geographical sites profiles were made perpendicularly to crevasses ranging in width from 0.1 m to 1.0 m. Buried crevasses clearly show as apexes of diffraction hyperbolae, which could be detected down to a depth of 15 m. Show as discontinuities in the firn stratigraphy which have a width equal to the crevasse width, and associated diffraction hyperbolae to each side of the crevasse. The GPR proved to be a valuable tool for detecting crevasses, allowing for a reaction time of ~9 s (equivalent to ~4.5 m on the ground) in the case of the hand-carried system and ~5 s (or ~10 m on the ground) for the tractor system.
dc.language.isoeng
dc.relationinstname: Conicyt
dc.relationreponame: Repositorio Digital RI2.0
dc.relationinstname: Conicyt
dc.relationreponame: Repositorio Digital RI 2.0
dc.titleCREVASSE DETECTION IN GLACIERS OF SOUTHERN CHILE AND ANTARCTICA BY MEANS OF GROUND PENETRATING RADAR
dc.typeCapitulo de libro
dc.bibliographicCitation.stpage153
dc.bibliographicCitation.endpage162
dc.identifier.folio1040515
dc.description.conicytprogramFONDECYT
dc.relation.projectidinfo:eu-repo/grantAgreement/Fondecyt/1040515
dc.relation.setinfo:eu-repo/semantics/dataset/hdl.handle.net/10533/93479
dc.rights.driverinfo:eu-repo/semantics/openAccess
dc.type.driverinfo:eu-repo/semantics/bookPart
dc.description.shortconicytprogramFONDECYT
dc.title.libroGLACIER MASS BALANCE CHANGES AND MELTWATER DISCHARGE
dc.creator.libroGinot, Patrick
dc.creator.libroSicart, Jean-Emmanuel
dc.description.libropages216
dc.publisher.editorialIAHS PRESS


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