Recorded displacements in a landslide slope due to regional and teleseismic earthquakes

L. Lenti, S. Martino, A. Paciello, A. Prestininzi, S. Rivellino

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Abstract

Regional and teleseismic earthquakes can induce displacements along joints in a landslideinvolved rocky slope in Central Italy. The rarity of these effects is due to specific physical properties of the seismic signals associated with: (i) the energy content, (ii) the distribution of relative energy and peak of ground acceleration related to the ground motion components and (iii) the spectral amplitude distribution in the frequency domain; these properties allow the triggering earthquakes to be distinguished from the others. The observed effects are relevant when compared to the direction of the landslide movement and the dimensions of the involved rock mass volume. The landslide movement is less constrained in the direction parallel to the dip of the slope and the landslide dimensions are associated with characteristic periods that control the landslide deformational response in relation to the spectral content of the ground motion. The earthquake-induced displacements are significant because they have the same order of magnitude as the average annual cumulative displacement based on a decade of strain measurements within the slope.
Original languageEnglish
Pages (from-to)1335 - 1345
Number of pages11
JournalGeophysical Journal International
Volume201
Issue number3
DOIs
Publication statusPublished - 11 Mar 2015
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Geophysics
  • Geochemistry and Petrology

Cite this

Lenti, L., Martino, S., Paciello, A., Prestininzi, A., & Rivellino, S. (2015). Recorded displacements in a landslide slope due to regional and teleseismic earthquakes. Geophysical Journal International, 201(3), 1335 - 1345. https://doi.org/10.1093/gji/ggv063