地域空間の確率論的地震動ハザード評価手法の提案と地震防災への活用について

Hayashi, Takayuki; Yashiro, Harumi

doi:10.3130/aijs.84.1043

Cited by 1 publication

(3 citation statements)

References 7 publications

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“…In Spatial Probabilistic Seismic Hazard Analysis (SPSHA) proposed in [5], the probability ( > ; , ) that area A (or area ratio) of the area exceeding the strong ground motion intensity exceeds in years owing to earthquakes in a certain area is calculated by…”

Section: Outline Of Spshamentioning

confidence: 99%

“…The earthquake source model, earthquake ground motion prediction equation on engineering bedrock, and shallow soil amplification factor are obtained from Japanese National Seismic Hazard Map by HERP [7,8]. Probability characteristics of ground motion intensity is sampled by MCS, considering perfect correlation for inter-event error and the spatial correlation for intra-event error for GMPE based on [5]. Standard deviation of inter-event variation and intra-event variation are 0.192, and 0.160, respectively.…”

Section: Conducting Spshamentioning

confidence: 99%

“…We propose a method that extends PSHA to an entire area. Spatial Probabilistic Seismic Hazard Analysis (SPSHA) discussed in [5] is a method of calculating the relationship between the occurrence area of given ground motion intensity and its exceedance probability in the target area considering the correlation of spatial ground motions. In this method, the earthquake motion prediction equation is corrected following the earthquake observation records from the target area.…”

Section: Introductionmentioning

confidence: 99%

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Application of Deaggregation of Spatial Probabilistic Seismic Hazard for Disaster Preparedness

Hayashi¹,

Yashiro²

2020

GEOMATE

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For regional disaster prevention, it is important to understand the area of occurrence of strong ground motion and its occurrence probability. The spatial probabilistic seismic hazard analysis (SPSHA) proposed by the authors can provide this information. In SPSHA, the results are expressed as a relation between the area where a given seismic intensity is generated and the exceedance probability. Results obtained from such a probabilistic approach include the effects of various seismic sources. Therefore, to efficiently describe an earthquake scenario for regional earthquake countermeasures, it is necessary to understand the impact of each earthquake source. In this study, we propose a seismic hazard deaggregation for SPSHA, and present a method for quantitatively understanding the earthquakes that affect the target region. As a practical application, SPSHA is conducted for Kanagawa prefecture in Japan. We conducted seismic hazard deaggregation for whole and sub-area, and discussed the differences in dominant earthquakes among areas and the use of such information in disaster prevention.

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Section: Outline Of Spshamentioning

confidence: 99%

Section: Conducting Spshamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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