Cowie, P. A., Phillips, R. J., Roberts, G. P., McCaffrey, K., Zijerveld, L. J. J., Gregory, L. C., Walker, J. Faure, Wedmore, L. N. J., Dunai, T. J., Binnie, S. A., Freeman, S. P. H. T., Wilcken, K., Shanks, R. P., Huismans, R. S., Papanikolaou, I., Michetti, A. M. and Wilkinson, M. (2017). Orogen-scale uplift in the central Italian Apennines drives episodic behaviour of earthquake faults. Sci Rep, 7. LONDON: NATURE PUBLISHING GROUP. ISSN 2045-2322

Full text not available from this repository.

Abstract

Many areas of the Earth's crust deform by distributed extensional faulting and complex fault interactions are often observed. Geodetic data generally indicate a simpler picture of continuum deformation over decades but relating this behaviour to earthquake occurrence over centuries, given numerous potentially active faults, remains a global problem in hazard assessment. We address this challenge for an array of seismogenic faults in the central Italian Apennines, where crustal extension and devastating earthquakes occur in response to regional surface uplift. We constrain fault slip-rates since -18 ka using variations in cosmogenic Cl-36 measured on bedrock scarps, mapped using LiDAR and ground penetrating radar, and compare these rates to those inferred from geodesy. The Cl-36 data reveal that individual faults typically accumulate meters of displacement relatively rapidly over several thousand years, separated by similar length time intervals when slip-rates are much lower, and activity shifts between faults across strike. Our rates agree with continuum deformation rates when averaged over long spatial or temporal scales ( 10(4) yr; 10(2) km) but over shorter timescales most of the deformation may be accommodated by <30% of the across-strike fault array. We attribute the shifts in activity to temporal variations in the mechanical work of faulting.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Cowie, P. A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Phillips, R. J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Roberts, G. P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
McCaffrey, K.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Zijerveld, L. J. J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gregory, L. C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Walker, J. FaureUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Wedmore, L. N. J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Dunai, T. J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Binnie, S. A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Freeman, S. P. H. T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Wilcken, K.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Shanks, R. P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Huismans, R. S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Papanikolaou, I.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Michetti, A. M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Wilkinson, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-236435
DOI: 10.1038/srep44858
Journal or Publication Title: Sci Rep
Volume: 7
Date: 2017
Publisher: NATURE PUBLISHING GROUP
Place of Publication: LONDON
ISSN: 2045-2322
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
STATIC STRESS CHANGES; CL-36; DEFORMATION; EXTENSION; MAGNITUDE; MODEL; RATESMultiple languages
Multidisciplinary SciencesMultiple languages
Refereed: Yes
URI: http://kups.ub.uni-koeln.de/id/eprint/23643

Downloads

Downloads per month over past year

Altmetric

Export

Actions (login required)

View Item View Item