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Short Introduction
The project TIPTEQ (The Incoming Plate to mega-Thrust EarthQuake processes) was a multi-disciplinary programme, whose aim is a quantitative understanding of megathrust earthquake seismicity in subduction zones and its relation to processes at depth and at the surface. The study area of the ongoing TIPTEQ programme was the site of the largest ever recorded Valdivia earthquake of 1960 (red star, upper Figure).
In our institute we have improved a three-dimensional density model of the investigated area originally developed in the framework of the Collaborative Research Centre 267 "Deformation Processes in the Andes". Also, the gravity field was analysed by means of optimised filtering techniques in order to locate relevant geological features (lower Figure).
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Principal Investigators: H.-J. Götze, U. Meyer (BGR Hannover)
Participants: R. Hackney, P. Alasonati, Z. Alasonati Tasárová
Leader: O. Oncken (GFZ Potsdam)
Partners:
GeoForschungsZentrum Potsdam - Sektion 3.1
Leibniz-Institut für Meereswissenschaften IfM-GEOMAR Kiel - FB 4/Dynamik des Ozeanbodens
Freie Universität Berlin - Institut für Geologische Wissenschaften/Fachrichtung Geophysik)
Universität Potsdam - Institut für Geowissenschaften
Universität Hamburg - Institut für Geophysik
Universität Bremen - Fachbereich Geowissenschaften/ Fachgebiet Meerestechnik/Sensorik
Universität Freiburg - Geologisches Institut
Bundesanstalt für Geowissenschaften und Rohstoffe Hannover - Referat B3.23
Funded by:
BMBF Geotechnology - program "Continental Margins"
Link in EN
Link in DEU
Contact:
R. Hackney (now at Geoscience Australia), Email: Ron.Hackney[at]ga.gov.au
H.-J. Götze, Email: hajo[at]geophysik.uni-kiel.de
P. Alasonati, Email: palasonati[at]geophysik.uni-kiel.de
U. Meyer, Email: Uwe.Meyer[at]bgr.de
Z. Tasárová, Email: tasarova[at]geophysik.uni-kiel.de
Links:
» http://www.gfz-potsdam.de
» http://www.bmbf.de
Duration: 2004 - 2007
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Gravity field and its horizontal gradient
Gravity anomaly (Bouguer onshore and free-air offshore) of the investigated area (above) and its computed horizontal gradient after filtering (below).
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