Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.tecto.2015.11.001 |
A similar to 3000 years-old sequence of extreme events revealed by marine and shore deposits east of Taiwan | |
Lallemand, Serge1,2; Lehu, Remi1,3; Retif, Fabien1; Hsu, Shu-Kun2,3; Babonneau, Nathalie2,4; Ratzov, Gueorgui5; Bassetti, Maria-Angela6; Dezileau, Laurent1,2; Hsieh, Meng-Long7; Dominguez, Stephane1,2 | |
通讯作者 | Lallemand, Serge |
来源期刊 | TECTONOPHYSICS
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ISSN | 0040-1951 |
EISSN | 1879-3266 |
出版年 | 2016 |
卷号 | 692页码:325-341 |
英文摘要 | We have discovered in a marine core, located 20 km east of the Coastal Range of Taiwan at the top of a 1200 m deep submarine high, sheltered from rivers discharges and gravitational flows, a 23 cm-thick anomalous sequence topped with broken bivalves and wood fragments. Based on radiocarbon dating, we distinguish five sub-events within similar to 100 yrs, about 3000 years ago. The oldest four sub-events are interpreted as the record of local submarine landslides, likely triggered by clustered earthquakes that are common in this tectonically active area. The last event including shells and wood has a different origin. Despite the high level of climatic and tectonic recent activity, no comparable event has been observed at the same site since that time, making it unique during the last 3.75 ka. Hydrodynamical modeling stimulated with a set of submarine landslide-triggered tsunami sources and combined with the regional oceanic circulation dominated by the Kuroshio Current, allow us to better constrain the transport paths of the suspended material, the expected run-up at the coast, arid ultimately the trigger and source that best fit our observations. The Kuroshio Current appears as a strong constraint that generally prevents cross-shore transport of suspended material even during a major tsunami. Since the largest aerial debris flow observed along the east coast of Taiwan during the last 4 ka was synchronous with the marine deposit, our preferred scenario starts with the occurrence of four distinct large earthquakes within less than a century, triggering both submarine and aerial landslides in the study area. Then, a giant typhoon reworked the nearshore material as well as the slided material stored upstream resulting in a debris flow. It deeply modified the surface current, allowing the wood debris and shells to fastly reach the core site. (C) 2015 Elsevier B.V. All rights reserved. |
英文关键词 | Extreme events Submarine landslide Earthquake Tsunami Typhoon Taiwan |
类型 | Article |
语种 | 英语 |
国家 | France ; Taiwan |
收录类别 | SCI-E |
WOS记录号 | WOS:000390823700019 |
WOS关键词 | HUA-TUNG COAST ; TECTONIC SIGNIFICANCE ; TURBIDITY CURRENTS ; RYUKYU ISLANDS ; TSUNAMI ; HOLOCENE ; OCEAN ; EARTHQUAKE ; SEA ; VARIABILITY |
WOS类目 | Geochemistry & Geophysics |
WOS研究方向 | Geochemistry & Geophysics |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/196638 |
作者单位 | 1.Univ Montpellier, CNRS, Geosci Montpellier, Montpellier, France; 2.CNRS, MOST Taiwan, LIA ADEPT, F-75700 Paris, France; 3.Natl Cent Univ, Dept Earth Sci, Chungli, Taiwan; 4.Univ Bretagne Occidentale, IUEM, Domaines Ocean Lab, Brest, France; 5.Univ Nice Sophia Antipolis, GeoAzur Lab, Nice, France; 6.Univ Perpignan, CNRS, CEFREM, F-66025 Perpignan, France; 7.Natl Chung Cheng Univ, Dept Earth & Environm Sci, Chiayi, Taiwan |
推荐引用方式 GB/T 7714 | Lallemand, Serge,Lehu, Remi,Retif, Fabien,et al. A similar to 3000 years-old sequence of extreme events revealed by marine and shore deposits east of Taiwan[J],2016,692:325-341. |
APA | Lallemand, Serge.,Lehu, Remi.,Retif, Fabien.,Hsu, Shu-Kun.,Babonneau, Nathalie.,...&Dominguez, Stephane.(2016).A similar to 3000 years-old sequence of extreme events revealed by marine and shore deposits east of Taiwan.TECTONOPHYSICS,692,325-341. |
MLA | Lallemand, Serge,et al."A similar to 3000 years-old sequence of extreme events revealed by marine and shore deposits east of Taiwan".TECTONOPHYSICS 692(2016):325-341. |
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