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DOI	10.1016/j.quascirev.2020.106488
	Tsunami deposits and recurrence on a typhoon-prone coast of northern Taiwan from the last millennium
	Yu N.-T.; Yen J.-Y.; Yen I.-C.; Hirakawa K.; Chuang C.-M.
发表日期	2020
ISSN	0277-3791
卷号	245
英文摘要	Widely known for its hazardous history, Taiwan holds valuable records of NW Pacific tsunamis and typhoons. Despite the similarity between tsunami and typhoon deposits, historical accounts enabled the identification of the 1867 tsunami deposit on the northern coast through matching with the record-setting inundation. However, the identification of prehistoric tsunami deposits has been hindered by severe sediment reworking and post-depositional changes produced by the typhoon-prone, tropical, and humid climate. In this study, we investigated the upper Holocene facies and their sediment sources and radiocarbon ages on distal floodplains and rocky backshores of the northern coast, where sediment reworking is less intense. Four decimetre-thick gravelly layers were identified, intercalated with fluvial mud and colluvium. The gravelly layers are composed of beach-derived quartz-rich sand and rounded gravels of the sedimentary basement rocks, longshore-drift andesite and stranded pumice. The remarkable layer thickness, gravel size, and quartz richness were determined to have endured post-depositional changes. The event layers are sharp-based, matrix-supported, and poorly sorted and have recorded scouring, sediment entrainment and rapid fallout of suspension-rich turbulent flows that probably originated with tsunamis. The event layers occur 0.5–0.8 km inland and 3–11.5 m above sea level, matching the 1867 tsunami inundation and wave height, respectively. Radiocarbon dating tied the event layers to the 1867 tsunami and three prehistoric events that occurred in the periods: 1545 to 1810, 1293 to 1414 and 1090 to 1235, representing a recurrence interval of 83–436 years over the last millennium. © 2020 The Author(s)
英文关键词	Last millennium; Northern Taiwan; NW Pacific; Palaeotsunami deposit; Post-depositional changes; Recurrence; Sediment reworking
语种	英语
scopus关键词	Deposits; Floods; Gravel; Hurricanes; Quartz; Sea level; Sedimentary rocks; Suspended sediments; Historical account; Last millenniums; Radiocarbon dating; Recurrence intervals; Sediment entrainments; Sediment sources; Tsunami deposits; Tsunami inundation; Tsunamis; andesite; entrainment; fallout; Holocene; recurrence interval; sea level change; sedimentary rock; tsunami; typhoon; Taiwan
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/151335
作者单位	Center for General Education, National Tsing Hua University, 101, Sec. 2, Kuang-Fu Rd., Hsinchu City, 300044, Taiwan; Department of Natural Resources and Environmental Studies, National Donghua University, 1, Sec. 2, Da Hsueh Rd., Shoufeng, Hualien, 974301, Taiwan; Graduate Institute of Applied Geology, National Central University, 300, Zhongda Rd., Zhongli Dist., Taoyuan City, 320317, Taiwan; Faculty of Environmental Earth Science, Hokkaido University, Kita 8, Nishi 5, Kita-ku, Sapporo, Hokkaido, 0600808, Japan; Central Geological Survey, M.O.E.A, R.O.C., 2, Ln. 109, Huaxin St., Zhonghe Dist. New Taipei City235055, Taiwan
推荐引用方式 GB/T 7714	Yu N.-T.,Yen J.-Y.,Yen I.-C.,et al. Tsunami deposits and recurrence on a typhoon-prone coast of northern Taiwan from the last millennium[J],2020,245.
APA	Yu N.-T.,Yen J.-Y.,Yen I.-C.,Hirakawa K.,&Chuang C.-M..(2020).Tsunami deposits and recurrence on a typhoon-prone coast of northern Taiwan from the last millennium.Quaternary Science Reviews,245.
MLA	Yu N.-T.,et al."Tsunami deposits and recurrence on a typhoon-prone coast of northern Taiwan from the last millennium".Quaternary Science Reviews 245(2020).