1935年新竹-台中 (台湾) 地震のメカニズムと断層モデル

• 許 華杞

  大漢工商専科学校

• 小菅 正裕

  弘前大学理学部地球科学科

• 佐藤 裕

  弘前大学理学部地球科学科

書誌事項

タイトル別名

• Mechanism and Fault Model of the Hsinchu-Taichung (Taiwan) Earthquake of 1935
• 1935ネン シンチク タイチュウ タイワン ジシン ノ メカニズム ト ダン

抄録

The Hsinchu-Taichung earthquake (M=7.1) of April 21, 1935 is one of the greatest earthquakes in Taiwan. We analyzed this earthquake using the data of leveling, triangulation, and P-wave first motion. Surface deformation is modeled by a double-fault system in a elastic half-space on the basis of surface traces of the fault. The Hsinchu-Taichung event is a complex one characterized by a strike-slip and a reverse fault. The initial rupture inferred from fault plane solution, is a near vertical right-lateral strike-slip event striking N67°E. A seismic moment of this event is 9×10²⁵dyne·cm. The reverse fault triggered by the initial strike-slip event is the main fault of the Hsinchu-Taichung event with seismic moment of 2.1×10²⁶dyne·cm. An average stress drop is estimated to be about 40 bars. Strike of the reverse fault, N23°E, is consistent with the direction of motion of Philippine Sea Plate. Although tectonics of western Taiwan is a complex one, it may be largely affected by the movement of Philippine Sea Plate.

収録刊行物

• 地震　第２輯

  地震　第２輯 35 (4), 567-574, 1982

  公益社団法人 日本地震学会

詳細情報

• CRID: 1390282679280125952
• NII論文ID: 40001526172
• NII論文ID: 130006784012
• NII書誌ID: AN00305741
• DOI: 10.4294/zisin1948.35.4_567
• ISSN: 18839029
• ISSN: 2186599X
• ISSN: 00371114
• NDL書誌ID: 2572517
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I2572517
• Web Site: https://www.jstage.jst.go.jp/article/zisin1948/35/4/35_4_567/_pdf
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