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
    info
    Universidad de Salamanca

    Salamanca, España

    ROR https://ror.org/02f40zc51

    Geographic location of the organization Universidad de Salamanca
  2. 2 Instituto Geológico y Minero de España
    info
    Instituto Geológico y Minero de España

    Madrid, España

    ROR https://ror.org/04cadha73

    Geographic location of the organization Instituto Geológico y Minero de España
  3. 3 Universidad Politécnica, Madrid, España
  4. 4 Universidad Autónoma de Madrid
    info
    Universidad Autónoma de Madrid

    Madrid, España

    ROR https://ror.org/01cby8j38

    Geographic location of the organization Universidad Autónoma de Madrid
  5. 5 Universidad de Alcalá
    info
    Universidad de Alcalá

    Alcalá de Henares, España

    ROR https://ror.org/04pmn0e78

    Geographic location of the organization Universidad de Alcalá
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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