000070736 001__ 70736 000070736 005__ 20190709135435.0 000070736 0247_ $$2doi$$a10.1002/esp.4069 000070736 0248_ $$2sideral$$a99359 000070736 037__ $$aART-2017-99359 000070736 041__ $$aeng 000070736 100__ $$aZarroca, Mario 000070736 245__ $$aThe application of GPR and ERI in combination with exposure logging and retrodeformation analysis to characterize sinkholes and reconstruct their impact on fluvial sedimentation 000070736 260__ $$c2017 000070736 5060_ $$aAccess copy available to the general public$$fUnrestricted 000070736 5203_ $$aThis work illustrates the practicality of investigating sinkholes integrating data gathered by ground penetrating radar(GPR), electrical resistivity imaging (ERI) and trenching or direct logging of the subsidence-affected sediments in combination withretrodeformation analysis. This mutidisciplinary approach has been tested in a large paleosinkhole developed during the depositionof a Quaternary terrace on salt-bearing evaporites. The subsidence structure, exposed in an artificial excavation, is located next toPuilatos, a village that was abandoned in the 1970s due to severe subsidence damage. Detailed logging of the exposure revealedthat the subsidence structure corresponds to an asymmetric sagging and collapse paleosinkhole with no clear evidence of recent ac-tivity. The sedimentological and structural relationships together with the retrodeformation analysis indicate that synsedimentary sub-sidence controlled channel location, the development of a palustrine environment and local changes in the channel pattern. GPRprofiles were acquired using an array of systems with different antenna frequencies, including some recently developed shielded an-tennas with improved vertical resolution and penetration depth. Although radargrams imaged the faulted sagging structure and pro-vided valuable data on fault throw, they did not satisfactorily image the complex architecture of the fluvial deposit. ERI showed lowerresolution but higher penetration depth when compared to GPR, roughly capturing the subsidence structure and yielding informationon the thickness of the high-resistivity alluvium and the nature of the underlying low-resistivity karstic residue developed on top ofthe halite-bearing evaporitic bedrock. Data comparison allows the assessment of the advantages and limitations of these comple-mentary techniques, highly useful for site-specific sinkhole risk management. 000070736 536__ $$9info:eu-repo/grantAgreement/ES/MINECO/CGL2013-40867-P 000070736 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc-nd$$uhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/ 000070736 590__ $$a3.722$$b2017 000070736 591__ $$aGEOGRAPHY, PHYSICAL$$b10 / 49 = 0.204$$c2017$$dQ1$$eT1 000070736 591__ $$aGEOSCIENCES, MULTIDISCIPLINARY$$b28 / 189 = 0.148$$c2017$$dQ1$$eT1 000070736 592__ $$a1.493$$b2017 000070736 593__ $$aEarth and Planetary Sciences (miscellaneous)$$c2017$$dQ1 000070736 593__ $$aGeography, Planning and Development$$c2017$$dQ1 000070736 593__ $$aEarth-Surface Processes$$c2017$$dQ1 000070736 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion 000070736 700__ $$aComas, Xavier 000070736 700__ $$0(orcid)0000-0002-5407-940X$$aGutiérrez, Francisco$$uUniversidad de Zaragoza 000070736 700__ $$0(orcid)0000-0001-6175-0364$$aCarbonel, Domingo$$uUniversidad de Zaragoza 000070736 700__ $$aLinares, Rogelio 000070736 700__ $$aRoqué, Carles 000070736 700__ $$aMortezza, Mozafari 000070736 700__ $$0(orcid)0000-0003-2181-732X$$aGuerrero, Jesús$$uUniversidad de Zaragoza 000070736 700__ $$aPellicer, Xavier M. 000070736 7102_ $$12000$$2427$$aUniversidad de Zaragoza$$bDpto. Ciencias de la Tierra$$cÁrea Geodinámica Externa 000070736 773__ $$g42, 7 (2017), 1049-1064$$pEarth surf. processes landf.$$tEARTH SURFACE PROCESSES AND LANDFORMS$$x0197-9337 000070736 8564_ $$s991343$$uhttps://zaguan.unizar.es/record/70736/files/texto_completo.pdf$$yPostprint 000070736 8564_ $$s41942$$uhttps://zaguan.unizar.es/record/70736/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint 000070736 909CO $$ooai:zaguan.unizar.es:70736$$particulos$$pdriver 000070736 951__ $$a2019-07-09-11:33:41 000070736 980__ $$aARTICLE