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首页> 外文期刊>Seismological research letters >Origin Time of the 1854 Ansei–Tokai Tsunami Estimated from Tide Gauge Records on the West Coast of North America
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Origin Time of the 1854 Ansei–Tokai Tsunami Estimated from Tide Gauge Records on the West Coast of North America

机译：1854年的原始时间从北美西海岸的潮汐量记录估计了1854年的Ansei-tokai海啸

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摘要

We estimated the origin time of the 1854 Ansei–Tokai tsunami from the tsunami waveforms recorded at three tide gauge stations (Astoria, San Francisco, and San Diego) on the west coast of North America. The tsunami signal is apparent in the San Francisco and San Diego records, and the arrival time was 0–1 p.m. Greenwich Mean Time (GMT) on 23 December 1854, whereas the tsunami signal of Astoria is ambiguous, and the arrival time could not be determined from the waveform. The simulated waveforms on the basis of nonlinear dispersive wave theory by assuming an origin time of 0 a.m. GMT on 23 December arrived earlier than the observations. Cross‐correlation functions between the observed and simulated waveforms recorded at San Francisco and San Diego showed a time gap between them of approximately 30 min. Based on these results, we concluded that the origin time of the 1854 Ansei–Tokai tsunami was approximately 00:30 a.m. GMT or 09:46 local time on 23 December. Our result is roughly consistent with reports by a Russian frigate anchored in Shimoda Bay, ranging the earthquake between 09:00 and 09:45 and the tsunami between 09:30 and 10:00. The earthquake was also reported in historical Japanese documents ranging from 8 and 10 o’clock in local time.
机译：None

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  • 来源
    《Seismological research letters》 |2020年第5期|共7页
  • 作者

    Satoshi Kusumoto; Kentaro Imai; Ryoko Obayashi; Takane Hori; Narumi Takahashi; Tung–Cheng Ho; Karen Uno; Yuichiro Tanioka; Kenji Satake;

  • 作者单位

    Japan Agency for Marine–Earth Science and Technology;

    Japan Agency for Marine–Earth Science and Technology;

    Japan Agency for Marine–Earth Science and Technology;

    Japan Agency for Marine–Earth Science and Technology;

    Japan Agency for Marine–Earth Science and Technology;

    Kyoto University Disaster Prevention Research Institute;

    Hokkaido University Institute of Seismology and Volcanology Faculty of Science;

    Hokkaido University Institute of Seismology and Volcanology Faculty of Science;

    University of Tokyo Earthquake Research Institute Bunkyo–ku;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 地震学;
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