Macroseismic analysis of slope movements triggered by the 2011 Lorca Earthquake (Mw 5.1)application of the ESI-07 scale

  1. P. G. Silva 1
  2. R. Pérez-López 2
  3. M.A. Rodríguez-Pascua 2
  4. E. Roquero 3
  5. J.L. Giner Robles 4
  6. P. Huerta 1
  7. A. Martínez-Graña 1
  8. T. Bardají 5
  1. 1 Universidad de Salamanca, España
  2. 2 Instituto Geológico y Minero de España
    info

    Instituto Geológico y Minero de España

    Madrid, España

    ROR https://ror.org/04cadha73

  3. 3 Universidad Politécnica, Madrid, España
  4. 4 Universidad Autónoma de Madrid, España
  5. 5 Universidad de Alcalá, España
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Journal:
Geogaceta

ISSN: 0213-683X

Year of publication: 2015

Issue Title: Comunicaciones presentadas en la LVII Sesión Científica / Madrid, 27-28 de Noviembre de 2014

Issue: 57

Pages: 35-38

Type: Article

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Abstract

256 slope movements were triggered during the 2011 Lorca earthquake (Mw 5.1). They mainly are rock falls and rock avalanches with maximum volumes of 1000 m3 for 11 cases. Box counting analysis indicate that the total area affected by slope movements is of 135 km2, but only 85 km2 contain recorded events. The larger slope movement occurred along the main structural reliefs, deep rambla-valleys, and badlands of the zone. Box-counting also identifies a zone of ca. 9-10 km2 in the epicentral area (Barranco Hondo) in which about the 23%of the cases occurred.The performed analysis allows to delineate and refine the intensity zones in sparsely populated zones without EMS intensity data, identifying VIII ESI-07 intensity from secondary and primary earthquake environmental effects, no detected in previous macroseismic analyses of the zone.

Data source: Dialnet