IDEAS home Printed from https://ideas.repec.org/a/gam/jlands/v12y2023i1p172-d1025314.html
   My bibliography  Save this article

Rockfall Intensity under Seismic and Aseismic Conditions: The Case of Lefkada Island, Greece

Author

Listed:
  • Aikaterini Servou

    (Department of Geology, University of Patras, 26504 Patras, Greece)

  • Nikolaos Vagenas

    (Department of Geology, University of Patras, 26504 Patras, Greece)

  • Nikolaos Depountis

    (Department of Geology, University of Patras, 26504 Patras, Greece)

  • Zafeiria Roumelioti

    (Department of Geology, University of Patras, 26504 Patras, Greece)

  • Efthimios Sokos

    (Department of Geology, University of Patras, 26504 Patras, Greece)

  • Nikolaos Sabatakakis

    (Department of Geology, University of Patras, 26504 Patras, Greece)

Abstract

Rockfall analysis is a multiparametric procedure with many uncertainties and the outputs are largely dependent on some critical engineering geological parameters involved in the used simulation model. In this paper, three completely different limestone rock sequences, named Pantokratoras, Vigla, and Paxos limestones along the western coastal slopes of Lefkada island, in Greece, are examined regarding their rockfall susceptibility as expressed by produced kinetic energy, under aseismic and seismic conditions. A rockfall inventory was prepared through detailed field measurements after the extensive rockfalls which were caused by the strong earthquake of November 2015, while engineering geological surveys were systematically conducted on the limestone rock masses. Two case scenarios were adopted for the rockfall simulations: one without the horizontal initial velocity of the detached rock boulder and the other with an estimated value obtained from the peak ground velocity (PGV) of the main seismic shock. Two-dimensional rockfall simulations were performed in selected cross-sections for each rock mass, and spatial distribution maps of the intensity (kinetic energy) were generated. A comparison of the maps has shown a strong maximum variation in the intensity levels among the three rock masses mainly due to the differential size of the detached boulders because of the inherent engineering geological characteristics of the rock masses. The results show that the earthquake ground velocity generally leads to a fluctuating change in the intensity values due to the trajectory shape and increases the rockfall magnitude as the main triggering factor.

Suggested Citation

  • Aikaterini Servou & Nikolaos Vagenas & Nikolaos Depountis & Zafeiria Roumelioti & Efthimios Sokos & Nikolaos Sabatakakis, 2023. "Rockfall Intensity under Seismic and Aseismic Conditions: The Case of Lefkada Island, Greece," Land, MDPI, vol. 12(1), pages 1-23, January.
    • Handle: RePEc:gam:jlands:v:12:y:2023:i:1:p:172-:d:1025314
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/2073-445X/12/1/172/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/2073-445X/12/1/172/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Yuanyuan He & Lei Nie & Yan Lv & Hong Wang & Senfeng Jiang & Xiaohan Zhao, 2021. "The study of rockfall trajectory and kinetic energy distribution based on numerical simulations," 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. 106(1), pages 213-233, March.
    2. Th. Rondoyanni & M. Sakellariou & J. Baskoutas & N. Christodoulou, 2012. "Evaluation of active faulting and earthquake secondary effects in Lefkada Island, Ionian Sea, Greece: an overview," 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. 61(2), pages 843-860, March.
    Full references (including those not matched with items on IDEAS)

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Ziwei Ge & Hongyan Liu, 2023. "Numerical investigation on the dynamic response of rockfall impacts on flexible barrier under seismic loading," 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. 115(2), pages 1213-1234, January.
    2. Zhao, Pengxiang & Zhuo, Risheng & Li, Shugang & Lin, Haifei & Shu, Chi-Min & Shuang, Haiqing & Wei, Zongyong, 2023. "Greenhouse gas protection and control based upon the evolution of overburden fractures under coal mining: A review of methods, influencing factors, and techniques," Energy, Elsevier, vol. 284(C).

    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:gam:jlands:v:12:y:2023:i:1:p:172-:d:1025314. 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.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with 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: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.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.