Thirteenth Annual West Coast Conference on Contaminated Soils, Sediments and Water March 17–20, 2003 Mission Valley Marriott, San Diego, California

2003 ◽  
Vol 12 (5) ◽  
pp. 673-777
Keyword(s):  
West Coast ◽  
Contaminated Soils ◽  
San Diego ◽  
Mission Valley

Origin Time of the 1854 Ansei–Tokai Tsunami Estimated from Tide Gauge Records on the West Coast of North America

2020 ◽  
Vol 91 (5) ◽  
pp. 2624-2630 ◽  
Author(s):  
Satoshi Kusumoto ◽  
Kentaro Imai ◽  
Ryoko Obayashi ◽  
Takane Hori ◽  
Narumi Takahashi ◽  
...  
Keyword(s):  
North America ◽  
San Francisco ◽  
Local Time ◽  
West Coast ◽  
San Diego ◽  
Arrival Time ◽  
Tide Gauge ◽  
The West ◽  
Origin Time ◽  
Tsunami Signal

Abstract 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.

Shakespeare on the West Coast, at Ashland and San Diego

1965 ◽  
Vol 16 (4) ◽  
pp. 343 ◽  
Author(s):  
Dorothy Nichols
Keyword(s):  
West Coast ◽  
San Diego ◽  
The West
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