WEKO3
アイテム
Ground motion and rupture process of the 2003 Tokachi-oki earthquake obtained from strong motion data of K-NET and KiK-net
https://nied-repo.bosai.go.jp/records/5023
https://nied-repo.bosai.go.jp/records/502386f8face-adea-42da-b093-23c5104a0fd3
| Item type | researchmap(1) | |||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 公開日 | 2023-03-30 | |||||||||||||||||||||||||||||
| タイトル | ||||||||||||||||||||||||||||||
| 言語 | ja | |||||||||||||||||||||||||||||
| タイトル | Ground motion and rupture process of the 2003 Tokachi-oki earthquake obtained from strong motion data of K-NET and KiK-net | |||||||||||||||||||||||||||||
| タイトル | ||||||||||||||||||||||||||||||
| 言語 | en | |||||||||||||||||||||||||||||
| タイトル | Ground motion and rupture process of the 2003 Tokachi-oki earthquake obtained from strong motion data of K-NET and KiK-net | |||||||||||||||||||||||||||||
| 言語 | ||||||||||||||||||||||||||||||
| 言語 | eng | |||||||||||||||||||||||||||||
| 著者 |
Honda Ryou
× Honda Ryou
× Aoi Shin
× Morikawa Nobuyuki
× Sekiguchi Haruko
× Kunugi Takashi
× Fujiwara Hiroyuki
|
|||||||||||||||||||||||||||||
| 抄録 | ||||||||||||||||||||||||||||||
| 内容記述タイプ | Other | |||||||||||||||||||||||||||||
| 内容記述 | A great earthquake, named the 2003 Tokachi-oki earthquake, occurred in the southern Kuril subduction zone on 26th September 2003, 4:50 JST (41.7797°N, 144.0795°E, 42 km depth; Japan Meteorological Agency). Its ground motion was recoreded at 655 stations of the nationwide strong motion networks, K-NET and KiK-net. A maximum peak ground acceleration of 988 cm/s2 (gal) was observed at station HKD100 and amplitudes greater than 200 cm/s2 were observed over a wide area of eastern Hokkaido. We used a multi-line linear waveform inversion method to estimate the rupture process from the strong motion data of supplied by 15 stations. We assumed a fault plane model of 140 km × 160 km with strike and dip angles of our fault model are N246°E and 18°, respectively, placed on the estimated upper boundary of the subducting Pacific Plate. The estimated total slip distribution consisted of three major slip areas; (a) around the hypocenter, (b) the northwest part of the fault with the maximum slip of 5.9 m, and (c) the northeast edge of the fault plane. The major asperity (b) was composed of two large slip areas with different slip rate functions: the duration of moment release in the sourtheast part is longer than 15 sec, but in contrast most of the seismic moment of the northwest part was released in a short period of less than 10 sec. Our estimation of the total seismic moment was 2.9 × 1021 N·m which corresponded to Mw = 8.2. | |||||||||||||||||||||||||||||
| 言語 | ja | |||||||||||||||||||||||||||||
| 抄録 | ||||||||||||||||||||||||||||||
| 内容記述タイプ | Other | |||||||||||||||||||||||||||||
| 内容記述 | A great earthquake, named the 2003 Tokachi-oki earthquake, occurred in the southern Kuril subduction zone on 26th September 2003, 4:50 JST (41.7797°N, 144.0795°E, 42 km depth; Japan Meteorological Agency). Its ground motion was recoreded at 655 stations of the nationwide strong motion networks, K-NET and KiK-net. A maximum peak ground acceleration of 988 cm/s2 (gal) was observed at station HKD100 and amplitudes greater than 200 cm/s2 were observed over a wide area of eastern Hokkaido. We used a multi-line linear waveform inversion method to estimate the rupture process from the strong motion data of supplied by 15 stations. We assumed a fault plane model of 140 km × 160 km with strike and dip angles of our fault model are N246°E and 18°, respectively, placed on the estimated upper boundary of the subducting Pacific Plate. The estimated total slip distribution consisted of three major slip areas; (a) around the hypocenter, (b) the northwest part of the fault with the maximum slip of 5.9 m, and (c) the northeast edge of the fault plane. The major asperity (b) was composed of two large slip areas with different slip rate functions: the duration of moment release in the sourtheast part is longer than 15 sec, but in contrast most of the seismic moment of the northwest part was released in a short period of less than 10 sec. Our estimation of the total seismic moment was 2.9 × 1021 N·m which corresponded to Mw = 8.2. | |||||||||||||||||||||||||||||
| 言語 | en | |||||||||||||||||||||||||||||
| 書誌情報 |
ja : Ｅａｒｔｈ， Ｐｌａｎｅｔｓ ａｎｄ Ｓｐａｃｅ en : Earth, Planets and Space 巻 56, 号 3, p. 317-322 |
|||||||||||||||||||||||||||||
| 出版者 | ||||||||||||||||||||||||||||||
| 言語 | ja | |||||||||||||||||||||||||||||
| 出版者 | 公益社団法人 日本地震学会、地球電磁気・地球惑星圏学会 、特定非営利活動法人 日本火山学会、日本測地学会、日本惑星科学会 | |||||||||||||||||||||||||||||
| 出版者 | ||||||||||||||||||||||||||||||
| 言語 | en | |||||||||||||||||||||||||||||
| 出版者 | The Seismological Society of Japan, Society of Geomagnetism and Earth, Planetary and Space Sciences, The Volcanological Society of Japan , The Geodetic Society of Japan , The Japanese Society for Planetary Sciences | |||||||||||||||||||||||||||||
| ISSN | ||||||||||||||||||||||||||||||
| 収録物識別子タイプ | ISSN | |||||||||||||||||||||||||||||
| 収録物識別子 | 1343-8832 | |||||||||||||||||||||||||||||
| DOI | ||||||||||||||||||||||||||||||
| 関連識別子 | 10.1186/BF03353058 | |||||||||||||||||||||||||||||
