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Abstract

The epicentre of the destructive earthquake that devastated northern Armenia, the strongest in the region since historical times, is located within the Lesser Caucasus, a mountain country subjected to north–south compression by the push of the Arabian plate. A French-Soviet field expedition studied surface breaks and aftershock activity. The fault scarp could be followed for 13 kilometres and showed a reverse dislocation of 1.6 metres. Aftershocks are shallower than 13 kilometres, and delimit a ruptured surface of about 300km2.

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Affiliations

  1. Institutde Physique du Globe, Université Louis Pasteur, 5 rue René Descartes, 67084 Strasbourg, Cedex, France

    • A. Cisternas
    • , M. Cara
    • , L. Dorbath
    • , C. Dorbath
    • , H. Haessler
    • , E. Jimenez
    •  & L. Rivera
  2. Laboratoire de Géologic Structural, Université des Sciences et Techniques du Languedoc, Place E. Bataillon, 34060 Montpellier, France

    • H. Philip
    •  & J. C. Bousquet
  3. Institut de Physique du Globe, Université Pierre et Marie Curie, 4 place Jussieu, 75230 Paris Cedex 05, France

    • A. Deschamps
    • , A. Nercessian
    •  & B. Romanowicz
  4. Institut Français de Recherche Scientifique pour le Développement en Coopération, ORSTOM, 213 rue La Fayette, 75480 Paris Cedex 10, France

    • L. Dorbath
    •  & C. Dorbath
  5. Institute of Physics of the Earth, 10 Bolshaya Gruzinskaya, 123810 Moscow, USSR

    • A. Gvishiani
    • , N. V. Shebalin
    • , I. Aptekman
    • , S. Arefiev
    • , B. A. Borisov
    • , A. Gorshkov
    • , V. Graizer
    • , A. Lander
    • , K. Pletnev
    • , A. I. Rogozhin
    •  & R. Tatevossian

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https://doi.org/10.1038/339675a0

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