Probabilistic seismic hazard assessments for Northern Southeast Asia (Indochina): Smooth seismicity approach

  • Teraphan Ornthammarath (貢獻者)
  • Pennung Warnitchai (貢獻者)
  • Chung-Han   Chan (貢獻者)
  • Yu Wang (???dataset.roles.dataset.creator???)
  • Xuhua Shi (貢獻者)
  • Phuong Hong Nguyen (???dataset.roles.dataset.creator???)
  • Le Minh Nguyen (???dataset.roles.dataset.creator???)
  • Suwith Kosuwan (貢獻者)
  • Myo Thant (貢獻者)

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資料集描述

We present an evaluation of the 2018 Northern Southeast Asia Seismic Hazard Model (NSAHM18) based on a combination of smoothed seismicity, subduction zone, and fault models. The smoothed seismicity is used to model observed distributed seismicity from largely unknown sources in the current study area. In addition, due to a short instrumental earthquake catalog, slip rate and characteristic earthquake magnitudes are incorporated through the fault model. To achieve this objective, the compiled earthquake catalogs and updated active fault databases in this region were reexamined with consistent use of these input parameters. To take into account epistemic uncertainty, logic tree analysis has been implemented incorporating basic quantities such as ground-motion models (GMMs) for three different tectonic regions (shallow active, subduction interface, and subduction intraslab), maximum magnitude, and earthquake magnitude frequency relationships. The seismic hazard results are presented in peak ground acceleration maps at 475- and 2475-year return periods.
可用日期2020
發行者SAGE Journals

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