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dc.contributor.authorGrützner, Christophen
dc.contributor.authorFischer, Peteren
dc.contributor.authorReicherter, Klausen
dc.date.accessioned2016-01-08T17:44:21Z
dc.date.available2016-01-08T17:44:21Z
dc.date.issued2016-01-28en
dc.identifier.citationGrützner et al. Geophysical Journal International (2016) Vol. 204, Issue 3, pp. 1662-1677. doi: 10.1093/gji/ggv558en
dc.identifier.issn0956-540X
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/253186
dc.description.abstractThe Lower Rhine Embayment in Central Europe hosts a rift system that has very low deformation rates. The faults in this area have slip rates of less than 0.1 mm/yr, which does not allow to investigate ongoing tectonic deformation with geodetic techniques, unless they cover very long time spans. Instrumental seismicity does only cover a small fraction of the very long earthquake recurrence intervals of several thousands of years. Paleoseismological studies are needed to constrain slip rates and the earthquake history of such faults. Destructive earthquakes are rare in the study area, but did occur in historic times. In 1755/56, a series of strong earthquakes caused significant destruction in the city of Düren (Germany) and the surrounding areas. In this study we document paleoseismological data from the nearby Rurrand Fault. In contrast to earlier studies on the same fault, we found evidence for a surface rupturing earthquake in the Holocene, and we identified at least one more surface rupturing event. Our study shows that the Rurrand Fault currently accommodates deformation in earthquakes rather than by creeping. The coseismic offsets were determined to be between less than 0.5 m per event. We assign maximum possible magnitudes of MW5.9-6.8 for the Rurrand Fault and a slip rate of at least 0.02-0.03 mm/yr for the last ~130-50 kyr. The surface ruptures did not occur at the main fault trace that has a clear morphological expression due to older tectonic motions, but on a younger fault strand in the hanging wall of the main fault. Terrain analyses based on 1 m resolution airborne LiDAR data have been used to image the subtle morphological expression of this young fault zone. Georadar and electric resistivity tomography were applied to image the fault zone at depth and to test if these shallow geophysical methods can be used to identify and trace the fault zone. Georadar failed to produce reliable results, but geoelectrics were successfully applied and allowed us to retrieve slip rate estimates. Our results indicate that the Düren 1755/56 earthquakes did not produce surface ruptures at the Rurrand Fault, either because they did not rupture the surface at all, or because they occurred at another, neighboring fault.
dc.languageEnglishen
dc.language.isoenen
dc.publisherOxford University Press
dc.subjectRurrand Faulten
dc.subjectpaleoseismologyen
dc.subjectRoer Valley Grabenen
dc.subjectslow active faulten
dc.titleHolocene surface ruptures of the Rurrand Fault, Germany – insights from paleoseismology, remote sensing and shallow geophysicsen
dc.typeArticle
dc.description.versionThis is the author accepted manuscript. The final version is available from Oxford University Press via http://dx.doi.org/10.1093/gji/ggv558en
prism.endingPage1677
prism.publicationDate2016en
prism.publicationNameGeophysical Journal Internationalen
prism.startingPage1662
prism.volume204en
rioxxterms.versionofrecord10.1093/gji/ggv558en
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserveden
rioxxterms.licenseref.startdate2016-01-28en
dc.identifier.eissn1365-246X
rioxxterms.typeJournal Article/Reviewen
cam.orpheus.successThu Jan 30 12:55:26 GMT 2020 - The item has an open VoR version.*
rioxxterms.freetoread.startdate2300-01-01


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