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DOI	10.1016/j.quascirev.2020.106527
	Tsunamis and submarine landslides in Suruga Bay; central Japan; caused by Nankai–Suruga Trough megathrust earthquakes during the last 5000 years
	Kitamura A.; Yamada K.; Sugawara D.; Yokoyama Y.; Miyairi Y.; Hirakawa M.; Iwatsuki D.; Katagiri S.; Maeda M.; Mori H.; Nakai Y.; Okazaki S.; Sakamoto Y.; Sasada M.; Seki Y.; Takikawa Y.; Yamamoto Y.; Yoda Y.; Hamatome team
发表日期	2020
ISSN	0277-3791
卷号	245
英文摘要	Magnitude 8 megathrust earthquakes that have generated large tsunamis with wave heights of >5 m in coastal areas of southwestern Japan have occurred every 100–150 years along the Nankai–Suruga Trough, which marks the convergent boundary between the Eurasian and Philippine Sea plates. Using sedimentological, geochemical, and paleontological analyses, as well as 14C dating, we examined tsunami deposits in 12 sediment cores collected from the Hamatome lowland, Yaizu Plain, Shizuoka, which faces the Suruga Trough. Four sandy tsunami deposits (Sands 1–4) are identified in sediments deposited during the last 5000 years. Sand 1 was deposited between 805 and 405 BC, suggesting that only one tsunami left a sedimentological imprint in the Hamatome lowland lagoon during the period of ∼4000 years between 3090 and 2913 BC and the AD 1096 Eicho-Tokai earthquake. This very low frequency of tsunami inundation may suggest that this tsunami was larger than those typically associated with megathrust earthquakes. Sands 2–4 are correlated with tsunamis associated with the Eicho-Tokai, AD 1361 Shohei-Koan, and AD 1498 Meio-Tokai earthquakes, respectively. Our data indicate that a sand spit, which had previously protected the lagoon from oceanic waves, was abruptly destroyed following the AD 1096 Eicho-Tokai earthquake and did not re-form at the same location. This disappearance of the sand spit is inferred to have involved an earthquake-induced submarine landslide. The data presented in this paper, together with information obtained from historical documents, indicates that M8 megathrust earthquakes in AD 1096 and AD 1498 caused submarine landslides in the study area, resulting in coastal subsidence and damage to coastal areas additional to that caused by the tsunamis. © 2020 The Author(s)
英文关键词	Middle-late Holocene; Nankai–suruga megathrust earthquakes; Submarine landslides; Tsunami deposits
语种	英语
scopus关键词	Coastal zones; Deposits; Landslides; Sand; Submarine geology; Submarines; Tsunamis; Historical documents; Megathrust earthquakes; Southwestern Japan; Submarine landslides; Tokai earthquake; Tsunami deposits; Tsunami inundation; Very low frequency; Earthquakes; earthquake; lagoon; oceanic circulation; paleontology; sediment core; submarine; submarine landslide; subsidence; tsunami; Chubu; Honshu; Japan; Nankai Trough; Pacific Ocean; Philippine Sea; Shizuoka [Chubu]; Suruga Trough
来源期刊	Quaternary Science Reviews
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/151327
作者单位	Faculty of Science, Shizuoka University, 836 Ohya Suruga-ku, Shizuoka, 422-8529, Japan; Center for Integrated Research and Education of Natural Hazards, Shizuoka University, 836 Ohya, Suruga-ku, Shizuoka, 422-8529, Japan; Department of Human Behavior and Environment Sciences, School of Human Sciences Waseda University, 2-579-15 Mikajima, Tokorozawa-shi, Saitama, 359-1192, Japan; International Research Institute of Disaster Science, Tohoku University, E303 468-1, Aoba, Aramaki, Aoba-ku, Sendai, 980-8572, Japan; Atmosphere and Ocean Research Institute, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba, 277-8564, Japan
推荐引用方式 GB/T 7714	Kitamura A.,Yamada K.,Sugawara D.,等. Tsunamis and submarine landslides in Suruga Bay; central Japan; caused by Nankai–Suruga Trough megathrust earthquakes during the last 5000 years[J],2020,245.
APA	Kitamura A..,Yamada K..,Sugawara D..,Yokoyama Y..,Miyairi Y..,...&Hamatome team.(2020).Tsunamis and submarine landslides in Suruga Bay; central Japan; caused by Nankai–Suruga Trough megathrust earthquakes during the last 5000 years.Quaternary Science Reviews,245.
MLA	Kitamura A.,et al."Tsunamis and submarine landslides in Suruga Bay; central Japan; caused by Nankai–Suruga Trough megathrust earthquakes during the last 5000 years".Quaternary Science Reviews 245(2020).