IDEAS home Printed from https://ideas.repec.org/a/spr/nathaz/v102y2020i3d10.1007_s11069-020-03943-8.html
   My bibliography  Save this article

Evidence of site amplification from ground motion of the last two large crustal earthquakes in central-western Argentina

Author

Listed:
  • Patricia Alvarado

    (Centro de Investigaciones de la Geósfera y Biósfera CIGEOBIO (CONICET-Universidad Nacional de San Juan UNSJ)
    Universidad Nacional de San Juan)

  • Rodolfo Christiansen

    (Universidad Nacional de San Juan
    Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET))

  • Salvador Daniel Gregori

    (Universidad Nacional de San Juan
    Universidad Nacional de San Juan)

  • Mauro Saez

    (Centro de Investigaciones de la Geósfera y Biósfera CIGEOBIO (CONICET-Universidad Nacional de San Juan UNSJ)
    Universidad Nacional de San Juan)

Abstract

The present study has investigated site amplification effects from the analysis of peak ground accelerations (PGA) and spectral accelerations (SA) of the last two major crustal earthquakes in central-western Argentina. These data were obtained from 15 accelerometers and 57 seismoscopes, which recorded ground motions during the 1977 (Mw 7.5) San Juan earthquake, and the 1985 (Mw 5.9) Mendoza earthquake. PGA and SA measurements were compared with average values predicted by global attenuation empirical relationships for the same type of crustal earthquakes. The amplifications in ground accelerations were analyzed according to their distribution and compared with the average shear wave velocities at 30 m depth (Vs30) where the stations are located. Our results definitively show that site effects and direction of maximum surface wave radiation strongly amplify the ground acceleration during moderate to large earthquakes near San Juan and Mendoza (Argentina); this is of importance in seismic hazard analyses.

Suggested Citation

  • Patricia Alvarado & Rodolfo Christiansen & Salvador Daniel Gregori & Mauro Saez, 2020. "Evidence of site amplification from ground motion of the last two large crustal earthquakes in central-western Argentina," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 102(3), pages 1011-1031, July.
    • Handle: RePEc:spr:nathaz:v:102:y:2020:i:3:d:10.1007_s11069-020-03943-8
    DOI: 10.1007/s11069-020-03943-8
    as

    Download full text from publisher

    File URL: http://link.springer.com/10.1007/s11069-020-03943-8
    File Function: Abstract
    Download Restriction: Access to the full text of the articles in this series is restricted.
    File URL: https://libkey.io/10.1007/s11069-020-03943-8?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:spr:nathaz:v:102:y:2020:i:3:d:10.1007_s11069-020-03943-8. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Sonal Shukla or Springer Nature Abstracting and Indexing (email available below). General contact details of provider: http://www.springer.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.