Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017GL074593 |
Seismic velocity structure in the source region of the 2016 Kumamoto earthquake sequence, Japan | |
Shito, Azusa1; Matsumoto, Satoshi1; Shimizu, Hiroshi1; Ohkura, Takahiro2; Takahashi, Hiroaki3; Sakai, Shinichi4; Okada, Tomomi5,6; Miyamachi, Hiroki7; Kosuga, Masahiro8; Maeda, Yuta9; Yoshimi, Masayuki10; Asano, Youichi11; Okubo, Makoto12 | |
2017-08-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:15 |
文章类型 | Article |
语种 | 英语 |
国家 | Japan |
英文摘要 | We investigate seismic wave velocity structure and spatial distribution of the seismicity in the source region of the 2016 Kumamoto earthquake sequence. A one-dimensional mean velocity shows that the seismogenic zone has a high-velocity and low-Vp/Vs ratio relative to the average velocity structure of Kyushu Island. This indicates that the crust is relatively strong, capable of sustaining sufficiently high strain energy to facilitate two large (M-j > 6.5) earthquakes in close proximity to one another in rapid succession. Three-dimensional tomography of the seismogenic zone around the source of the 2016 Kumamoto earthquake sequence yields Vp = 6 km/s and Vs = 3.5 km/s. Most large-displacement areas (asperities) of the M-j 7.3 event overlap with the seismogenic zone and the overlying surface layer. Aftershock seismicity is distributed deeper than the conventional seismogenic zone, which suggests decreased strength due to fluids or increased stress, both caused by coseismic slip. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000408379000024 |
WOS关键词 | LARGE INLAND-EARTHQUAKES ; SOUTHWEST JAPAN ; HAYWARD FAULT ; CUTOFF DEPTH ; HEAT-FLOW ; CRUST ; ZONE ; TOMOGRAPHY ; CALIFORNIA ; BENEATH |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/29002 |
专题 | 气候变化 |
作者单位 | 1.Kyushu Univ, Inst Seismol & Volcanol, Fukuoka, Japan; 2.Kyoto Univ, Grad Sch Sci, Inst Geothermal Sci, Aso Volcanol Lab, Kumamoto, Japan; 3.Hokkaido Univ, Inst Seismol & Volcanol, Sapporo, Hokkaido, Japan; 4.Univ Tokyo, Earthquake Res Inst, Tokyo, Japan; 5.Tohoku Univ, Grad Sch Sci, Res Ctr Predict Earthquakes & Volcan Erupt, Sendai, Miyagi, Japan; 6.Tohoku Univ, Int Res Inst Disaster Sci, Sendai, Miyagi, Japan; 7.Kagoshima Univ, Grad Sch Sci & Engn, Kagoshima, Japan; 8.Hirosaki Univ, Grad Sch Sci & Technol, Hirosaki, Aomori, Japan; 9.Nagoya Univ, Grad Sch Environm Studies, Earthquake & Volcano Res Ctr, Nagoya, Aichi, Japan; 10.Geol Survey Japan, Adv Ind Sci & Technol, Tsukuba, Ibaraki, Japan; 11.Natl Res Inst Earth Sci & Disaster Resilience, Tsukuba, Ibaraki, Japan; 12.Kochi Univ, Fac Sci & Technol, Kochi Earthquake Observ, Kochi, Japan |
推荐引用方式 GB/T 7714 | Shito, Azusa,Matsumoto, Satoshi,Shimizu, Hiroshi,et al. Seismic velocity structure in the source region of the 2016 Kumamoto earthquake sequence, Japan[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(15). |
APA | Shito, Azusa.,Matsumoto, Satoshi.,Shimizu, Hiroshi.,Ohkura, Takahiro.,Takahashi, Hiroaki.,...&Okubo, Makoto.(2017).Seismic velocity structure in the source region of the 2016 Kumamoto earthquake sequence, Japan.GEOPHYSICAL RESEARCH LETTERS,44(15). |
MLA | Shito, Azusa,et al."Seismic velocity structure in the source region of the 2016 Kumamoto earthquake sequence, Japan".GEOPHYSICAL RESEARCH LETTERS 44.15(2017). |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论