000059205 001__ 59205
000059205 005__ 20200221144248.0
000059205 0248_ $$2sideral$$a95507
000059205 037__ $$aART-2016-95507
000059205 041__ $$aeng
000059205 100__ $$0(orcid)0000-0002-1460-1590$$aPueyo Anchuela, Óscar$$uUniversidad de Zaragoza
000059205 245__ $$aIndirect geophysical characterization of geohazards in mantled karst environments in the Ebro Basin
000059205 260__ $$c2016
000059205 5060_ $$aAccess copy available to the general public$$fUnrestricted
000059205 5203_ $$aKarst hazards in the central Ebro Basin are related to subsidence and collapses owing to evaporitic rocks located several tens of metres below the surface. In this type of karst (mantle karst) cavities propagate upwards through a non-soluble rock, in this case Quaternary alluvial deposits. The typical geological series comprises a heterogeneous alluvial unit underlain by a soluble, mainly gypsiferous, substratum and several water tables that usually present high conductivity variations. The highest concentration of karstic evidence is identified along the fluvial flood plain of the Ebro River where clayey deposits dominate at the surface. These boundary conditions produce complex environments for the evaluation of geophysical data related to i) karst activity, ii) the presence of cavities below the water table and within the substratum and iii) the variable sedimentary architecture of fluvial deposits. During the past ten years different geophysical techniques have been used in order to characterize karst hazards in the Central Ebro Basin. These experiences have enabled the evaluation resolution, discrimination characterization and finding of karstic evidence using different approaches. The main success in the application of these geophysical techniques has been the quantification of karst hazards from the record of subsidence processes through changes in density, magnetic susceptibility, apparent conductivity and structure of the alluvial deposits. However, the identification of cavities below the alluvial series still represents a serious handicap wing to nonunivocal interpretations and low resolution or penetration of geophysical techniques
000059205 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttp://creativecommons.org/licenses/by/3.0/es/
000059205 592__ $$a0.736$$b2016
000059205 593__ $$aGeophysics$$c2016$$dQ2
000059205 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion
000059205 700__ $$0(orcid)0000-0003-3652-3527$$aCasas Sainz, Antonio María$$uUniversidad de Zaragoza
000059205 700__ $$0(orcid)0000-0003-3197-4177$$aPocoví Juan, Andrés$$uUniversidad de Zaragoza
000059205 7102_ $$12000$$2428$$aUniversidad de Zaragoza$$bDpto. Ciencias de la Tierra$$cÁrea Geodinámica Interna
000059205 773__ $$g34, 8 (2016), 79-86$$pFirst break$$tFirst break$$x0263-5046
000059205 85641 $$uhttp://earthdoc.eage.org/publication/publicationdetails/?publication=86177$$zTexto completo de la revista
000059205 8564_ $$s1689899$$uhttps://zaguan.unizar.es/record/59205/files/texto_completo.pdf$$yPostprint
000059205 8564_ $$s101864$$uhttps://zaguan.unizar.es/record/59205/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint
000059205 909CO $$ooai:zaguan.unizar.es:59205$$particulos$$pdriver
000059205 951__ $$a2020-02-21-13:26:39
000059205 980__ $$aARTICLE