アメリカ合衆国の活断層データベースとその応用

Databases of active faults and their uses in the United States

奥村 晃史

活断層研究

Geologists and seismologists in the United States have been compiling and publicizing databases on possible sources of earthquakes including active faults since early 1970s. The ideas about the database and risk assessment have evolved in close response to public demands raised by such unforeseen earthquake hazards in 1989 Loma Prieta earthquake and 1994 Northridge earthquake. Though the forecasts of future earthquakes failed repeatedly, the scientific communities always analyzed the failure and improved the knowledge and technology. The faultrupture hazard zone mapping under the Alquist-Priolo act was supplemented by the seismic hazard mapping of liquefaction and landslides. Probabilistic earthquake hazard mapping of Southern California and entire United States clearly demonstrated the advantages of regional ground shaking assessment to the evaluation of fault activity.

データベース

ハザードマップ

活断層図

確率論的地震危険度評価

database

hazard map

fault mapping

probabilistic hazard assessment

地球科学・地学・地質学 [ 450 ]

日本語

活断層研究会

[ISSN] 0918-1024

[NCID] AN10157356

[URI] http://topo.earth.chiba-u.jp/afr/index.htm