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alaska

Apr 8, 2020

Resilience through preparedness: remembering the 1964 ‘Good Friday’ tsunami

56 years ago, the ‘Good Friday’ earthquake rocked the Gulf of Alaska, causing a major tsunami to roll across the Pacific Ring of Fire on the evening of 27 March 1964. Few in Tofino were aware of the magnitude 9.2 earthquake or the alerts being sent by the US tsunami warning centre. Three and a half hours after the shaking, a series of tsunami waves swept over beaches and strong currents scoured the Pacific northwest coastline (Figure 1). Being early springtime and late at night in a sparsely populated Tofino, the area suffered no fatalities or injuries and only minor damage was reported. The event was a wake-up call for a risk that was not well understood nor well prepared for.

...
Read more

tsunami | earthquake | Tofino | port alberni | alaska

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Data from Alaska’s Magnitude 7.9 Earthquake and Tsunami
Jan 23, 2018

Jan 23, 2018

Data from Alaska’s Magnitude 7.9 Earthquake and Tsunami

On 23 January 2018, a magnitude 7.9 earthquake occurred in the Gulf of Alaska at 1:35 am PT. A tsunami warning was issued for the west coast of Canada and the United States. The tsunami warning was cancelled at 4:40 am PT.

Ocean Networks Canada’s (ONC) real-time sensors detected the earthquake and the subsequent small tsunami that rippled out across the northeast Pacific (Figure 1).

magnitude 7.9 Alaskan earthquake

Figure 1. The relative timing of the magnitude 7.9 Alaskan earthquake and the subsequent small tsunami as detected by ONC real-time sensors.

The resulting tsunami wave was relatively small because this was a strike-slip...

Read more

tsunami | earthquake | earthquake early warning | EEWS | Vancouver Island | alaska

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Jan 5, 2013

Negligible Tsunami From Alaska Earthquake

A strong magnitude 7.5 earthquake struck west of Craig, Alaska at 12:58AM PST, 5 January 2013. Tsunami warning and alerts were issued for a broad section of the Alaskan and Canadian coastline, but no damaging waves were generated. According to the USGS, this earthquake was likely "related to that Haida Gwaii earthquake three months previously, and is an expression of deformation along the same plate boundary system."

...

Read more

earthquake | tsunami | geosciences | alaska | subduction | strike-slip | tectonics

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