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| Titel |
Stress field modeling of the Carpathian Basin based on compiled tectonic maps |
| VerfasserIn |
Albert Gáspár, Zsuzsanna Ungvári, Krisztián Szentpéteri |
| Konferenz |
EGU General Assembly 2014
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 16 (2014) |
| Datensatznummer |
250092977
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| Publikation (Nr.) |
 EGU/EGU2014-7343.pdf |
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| Zusammenfassung |
| The estimation of the stress field in the Carpathian Basin is tackled by several authors. Their
modeling methods usually based on measurements (borehole-, focal mechanism- and
geodesic data) and the result is a possible structural pattern of the region. Our method works
indirectly: the analysis is aimed to project a possible 2D stress field over the already
mapped/known/compiled lineament pattern. This includes a component-wise interpolation of
the tensor-field, which is based on the generated irregular point cloud in the puffer zone of the
mapped lineaments. The interpolated values appear on contour and tensor maps, and show the
relative stress field of the area.
In 2006 Horváth et al. compiled the ’Atlas of the present-day geodynamics of the
Pannonian basin’. To test our method we processed the lineaments of the 1:1 500 000 scale
’Map of neotectonic (active) structures’ published in this atlas. The geodynamic parameters
(i.e. normal, reverse, right- and left lateral strike-slip faults, etc.) of the lines on this map were
mostly explained in the legend. We classified the linear elements according to these
parameters and created a geo-referenced mapping database. This database contains
the polyline sections of the map lineaments as vectors (i.e. line sections), and the
directions of the stress field as attributes of these vectors. The directions of the
dip-parallel-, strike-parallel- and vertical stress-vectors are calculated from the
geodynamical parameters of the line section. Since we created relative stress field
properties, the eigenvalues of the vectors were maximized to one. Each point in
the point cloud inherits the stress property of the line section, from which it was
derived.
During the modeling we tried several point-cloud generating- and interpolation methods.
The analysis of the interpolated tensor fields revealed that the model was able to reproduce a
geodynamic synthesis of the Carpathian Basin, which can be correlated with the synthesis of
the Atlas published in 2006. The method was primarily aimed to reconstruct paleo-stress
fields.
References
Horváth, F., Bada, G., Windhoffer, G., Csontos, L., Dombrádi, E., Dövényi, P., Fodor, L.,
Grenerczy, G., Síkhegyi, F., Szafián, P., Székely, B., Timár, G., Tóth, L., Tóth, T. 2006: Atlas
of the present-day geodynamics of the Pannonian basin: Euroconform maps with explanatory
text. Magyar Geofizika 47, 133-137. |
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