WP 4 A model of the release of the two June 2000 earthquakes based on all available observations

Start date or starting event:

M0

Lead contractor:

IMOR

Participants:                                                IMOR, NVI, SIUI, UNIVTS-DST  

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Objectives:

To model the source process in time and space of the two large earthquakes based on multidisciplinary information.

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Inputs:

Results and deliverables of WP 4.1, 4.2, 4.3 and 4.4.

Results from other WP like the modelling packages 6.1 and 6.2 as well as 5.5.

Methodology / work description:

A significant part of the modelling is a dynamic modelling based on teleseismic data, local seismometer data and acceleration data as described in WP 4.1 and 4.2 which will carry out a full moment tensor inversion assuming point sources and slip distribution on a fault, respectively, i.e. related to the short (several seconds) earthquake process.

Observations by microearthquakes and by geological methods will reveal independently the size and the orientation of the fault plane, as well as the detailed postseismic slip and possibly volume changes.  Although these observations express process over a longer period of time, they will as well as the various deformation measurements put extra constraints on the short- lived earthquake modelling.

Another part of modelling the earthquakes is based on observations of the earthquake process as a process lasting say for weeks, i.e. including besides the short process of release if seismic waves,  pre- and postseismic process. This involves the possibility of a significant role of fluids,

shallow or from great depth in the earthquake process. Such a modelling is very significant in light of the possibility that such strike-slip earthquakes can be considered a part of a large and longer lasting aseismic process.

WP 4 is a forum with representatives from WP 4.1–4.4 as well as from other workpackages in the project, to merge together results and discuss interactively the progress in revealing the overall source process during the project period.

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Deliverables including cost of deliverable as percentage of total cost of the proposed project:

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Milestones: Delivery of the above items at the date indicated.