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Unterschätzte Unbekannte – Aktive Störungen in der Oberplatte großer Subduktionssysteme

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/persons/resource/pvictor

Victor,  Pia
Vol. 6, Issue 2 (2016), GFZ Journal 2016, System Erde : GFZ Journal, Deutsches GeoForschungsZentrum;
4.1 Lithosphere Dynamics, 4.0 Geomaterials, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;
IPOC, External Organizations;

/persons/resource/kemter

Kemter,  Matthias
Vol. 6, Issue 2 (2016), GFZ Journal 2016, System Erde : GFZ Journal, Deutsches GeoForschungsZentrum;
4.1 Lithosphere Dynamics, 4.0 Geomaterials, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;
IPOC, External Organizations;

Ewiak,  Oktawian
Vol. 6, Issue 2 (2016), GFZ Journal 2016, System Erde : GFZ Journal, Deutsches GeoForschungsZentrum;
External Organizations;
IPOC, External Organizations;

/persons/resource/thz

Ziegenhagen,  T.
Vol. 6, Issue 2 (2016), GFZ Journal 2016, System Erde : GFZ Journal, Deutsches GeoForschungsZentrum;
4.1 Lithosphere Dynamics, 4.0 Geomaterials, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;
IPOC, External Organizations;

/persons/resource/oncken

Oncken,  O.
Vol. 6, Issue 2 (2016), GFZ Journal 2016, System Erde : GFZ Journal, Deutsches GeoForschungsZentrum;
4.1 Lithosphere Dynamics, 4.0 Geomaterials, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;
IPOC, External Organizations;

Gonzalez,  Gabriel
Vol. 6, Issue 2 (2016), GFZ Journal 2016, System Erde : GFZ Journal, Deutsches GeoForschungsZentrum;
External Organizations;
IPOC, External Organizations;

Externe Ressourcen
Volltexte (frei zugänglich)

GFZ_syserde.06.02.05.pdf
(Verlagsversion), 6MB

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Zitation

Victor, P., Kemter, M., Ewiak, O., Ziegenhagen, T., Oncken, O., Gonzalez, G. (2016): Unterschätzte Unbekannte – Aktive Störungen in der Oberplatte großer Subduktionssysteme. - System Erde, 6, 2, 30-35.
https://doi.org/10.2312/GFZ.syserde.06.02.5


Zitierlink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_1917911
Zusammenfassung
The Atacama Fault System (AFS) is an active trench-parallel fault system, located in the forearc of N-Chile directly above the subduction zone interface. Due to its well-exposed position in the hyper arid forearc of N-Chile it is the perfect target to investigate the interaction between the deformation cycle in the overriding forearc and the subduction zone seismic cycle of the underlying megathrust. Although the AFS and large parts of the upper crust are devoid of any noteworthy seismicity or historically documented earthquakes, at least three M=7 earthquakes in the past 10 ky have been documented in the paleoseismological record, demonstrating the potential of large events in the future. We apply a two-fold approach to explore fault activation and reactivation patterns through time and to investigate the triggering potential of upper crustal faults. 1) A new methodology using high-resolution topographic data allows us to investigate the number of past earthquakes for any given segment of the fault system as well as the amount of vertical displacement of the last increment. This provides us with a detailed dataset of past earthquake rupture of upper plate faults which is potentially linked to large subduction zone earthquakes. 2) The IPOC Creepmeter array provides us with high-resolution time series of fault displacement accumulation for eleven stations along the four most active branches of the AFS.