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Finite-Element-Berechnungen zur Auswertung herdmechanischer Daten und deren Beziehungen zum Störungsmuster des Ägäis-Raumes

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Zusammenfassung

Für den Ägäis-Raum liegt seitRitsema 1974 ein umfangreiches Material herdmechanischer Daten vor. In der vorliegenden Studie wird daher die Rekonstruktion der Spannungsfelder aus den Richtungen der maximalen Kompression über ein ebenes Finite-Element-Modell versucht. Die auf diese Weise simulierten Bruchstrukturen werden mit den aus Luftbild- und Satellitenbild-Interpretation ermittelten Photolineationen sowie mit den Ergebnissen bathymetrischer und reflexions-seismischer Untersuchungen verglichen, um zu Aussagen über symmetrologische Beziehungen zwischen rezentem bzw. subrezentem Störungsmuster und rezenten Spannungsverteilungen zu gelangen.

Abstract

SinceRitsema 1974 a large amount of focal plane data exists for the Aegean. In this study the reconstruction of the stress field due to the direction of maximum compression as found inRitsema is attempted in a Finite-Element model. The fracture patterns thus simulated are compared with the results of photolineations ascertained from airphotos and satellite images as well as bathymetric and reflection — seismic investigations, in order to determine if a relation exists between the recent or subrecent fracture pattern and the recent stress distribution.

Résumé

DepuisRitsema 1974 un matériel considerable de données existe sur les mécanismes aux foyers des tremblements de terre de la région égéenne. Dans l'étude présente nous essayons done de reconstruire le champ des contraintes à partir des directions de la compression maximale au moyen d'un modèle d'élément-finite. Afin d'arriver à une conclusion sur des relations symmétrologiques entre les directions des failles récentes, respectivement subrécentes, et les répartitions de contraintes récentes, on doit comparer les failles ainsi simulées avec des photolinéations déterminées au moyen de l'interprétation des photos aériennes et satellites d'une part, et des résultats obtenus des recherches bathymétriques et réflexion-sismiques d'autre part.

Краткое содержание

ля Эгеймкого региона со времени Krtsema 1974 г. собран обширный сейсмологи ческий материал. В дан ном опубликовании да ется реконструкция полей напряжения, идущих от точек макси мального сдавления, н а модели конечных элементов (Finite-Element-Modell). Pолученные т. о. структу ры разломов сравнива ли с данными аэросъемки и съемок с сателлитов, а также с данными батиметрических и ре флексионных сейсми ческих исследований, чтобы найти связь меж ду картиной рецентных нарушений и рецентн ым распределением на пряжений.

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Author notes

  1. Bernd Meissner,  Michael Shulman &  Wolfdietrich Skala

    Present address: Institut für Geologie der Freien Universität, Altensteinstr. 34 a, D 1 Berlin 33

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    1. Bernd Meissner
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    2. Michael Shulman
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    3. Wolfdietrich Skala
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    Meissner, B., Shulman, M. & Skala, W. Finite-Element-Berechnungen zur Auswertung herdmechanischer Daten und deren Beziehungen zum Störungsmuster des Ägäis-Raumes. Geol Rundsch 68, 225–235 (1979). https://doi.org/10.1007/BF01821129

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