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|Authors: ||Kastelic, V.*|
Tiberti, M. M.*
|Title: ||Towards a seismogenic source model of the Dinarides|
|Issue Date: ||9-Sep-2009|
|Keywords: ||seismogenic source model|
|Abstract: ||Geology-based seismogenic source models are becoming the fundamental input for seismic hazard assessment
at the scale of an entire country. In this work, we will illustrate in simple steps the complex process that leads
from basic data to a fully-fledged seismogenic source model of the Dinaride thrust belt, running along coastal
Croatia, Montenegro and part of Albania.
We started from a layer of basic geological and structural data and explored a wide range of indicators of recent
tectonic activity, such as drainage anomalies/diversions and displaced or warped geological markers. We then
analyzed the interplay of these indicators with known or prospective tectonic structures. To the picture thus
obtained, we added a layer with a revised historical seismic catalog and selected a few earthquakes for which
we re-estimate epicenter and magnitude. At the end of our analyses we combined all these data in a structured
GIS database. With these data at hand, we also compared the longer-term indicators with present-day
stress/strain data such as GPS velocities and earthquake focal solutions.
Following the approach already developed for the construction of the Database of Individual Seismogenic
Sources for Italy, we developed a seismogenic source model for the Dinarides in which the better constrained
seismogenic faults have been mapped and parameterized and made ready for use in seismic hazard practice.
We believe that our experience in the Dinarides will become useful in unifying and formalizing the process of
constructing seismic source models in other countries.|
|Appears in Collections:||Conference materials|
04.04.09. Structural geology
04.06.03. Earthquake source and dynamics
04.04.01. Earthquake geology and paleoseismology
04.06.01. Earthquake faults: properties and evolution
04.06.05. Historical seismology
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