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| DOI | 10.1016/j.earscirev.2019.102971 |
| Dating tsunami deposits: Present knowledge and challenges | |
| Ishizawa T.; Goto K.; Yokoyama Y.; Goff J. | |
| 发表日期 | 2020 |
| ISSN | 00128252 |
| 卷号 | 200 |
| 英文摘要 | Dating approaches for fine sediment tsunami deposits can be divided into two categories: (1) dating directly using materials from within a tsunami deposit, and (2) dating indirectly using materials from above and below it. For the former, Optically Stimulated Luminescence (OSL) dating has a possible advantage in that is can directly date the burial age of sediments laid down by a tsunami. However, because of methodological limitations, OSL dating cannot always provide a reliable age. Although 14C and U–Th dating of reworked material from within a tsunami deposit are possible means of determining the age of the event, the results merely represent a maximum age of deposition. For these reasons, dating is commonly achieved indirectly from 14C dates taken from samples in sections immediately above and below a tsunami deposit. However, indirectly dated results do not provide a precise timing of the event. Therefore, there are distinct limitations in the ability to obtain high precision dating of past tsunamis. Recent methodological developments including the application of Bayesian statistical analysis to radiocarbon dating results and the selection of appropriate dating materials has significantly improved the accuracy of age determination by reducing errors. This review presents several methodological improvements that have enhanced tsunami deposit age estimation. The most important points for a more precise tsunami age estimation are the numbers of 14C samples dated coupled with the use of Bayesian statistical analysis. These points are applicable not only to tsunami deposits but also to many other past geohazard events. © 2019 Elsevier B.V. |
| 关键词 | Age-depth modelingBayesian statisticsSample selectionTsunami deposit |
| 英文关键词 | Bayesian analysis; fine grained sediment; knowledge; luminescence dating; modeling; radiocarbon dating; sampling; tsunami; uranium series dating |
| 语种 | 英语 |
| 来源期刊 | Earth Science Reviews
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/203751 |
| 作者单位 | Department of Earth Science, Tohoku University, Sendai, 980-8578, Japan; International Research Institute of Disaster Science, Tohoku University, Sendai, 980-8572, Japan; Atmosphere and Ocean Research Institute, The University of Tokyo, Kashiwa, 277-8564, Japan; Department of Earth and Planetary Sciences, Graduate School of Science, The University of Tokyo, Japan; Graduate Program on Environmental Science, Graduate School of Arts and Sciences, The University of Tokyo, Japan; Biogeochemistry Program, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Japan; PANGEA Research Centre, School of Biological, Earth and Environmental Science, UNSW, Sydney, 2052, Australia |
| 推荐引用方式 GB/T 7714 | Ishizawa T.,Goto K.,Yokoyama Y.,et al. Dating tsunami deposits: Present knowledge and challenges[J],2020,200. |
| APA | Ishizawa T.,Goto K.,Yokoyama Y.,&Goff J..(2020).Dating tsunami deposits: Present knowledge and challenges.Earth Science Reviews,200. |
| MLA | Ishizawa T.,et al."Dating tsunami deposits: Present knowledge and challenges".Earth Science Reviews 200(2020). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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