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earthquake

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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Jan 23, 2018

Nov 14, 2019

Drop, cover, and hold on

The final land-based Earthquake Early Warning (EEW) sensors have been installed, completing this advanced seismic infrastructure for British Columbia's alerting system. The system, now ready for commissioning, includes eight seafloor EEW sensors installed on the Cascadia subduction zone, providing real time data on earthquakes—a first on the seafloor off the coast of North America. 36 land-based EEW sites on Vancouver Island help to pin down high magnitude earthquakes.

Data integration is done with the Canadian National Seismograph Network and Pacific Northwest Seismic Network. We are currently working with alerting authorities to determine future roll out of the earthquake early warning system.

...

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earthquake | earthquake early warning | tsumani | Cascadia subduction zone | data

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Apr 8, 2020

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Nov 14, 2019

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Oct 24, 2019

Nov 14, 2019

Expedition 2019: Highlights Story Map

Click here for the full screen interactive experience.

 

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expeditions | Expedition 2019 | Fisheries and Oceans Canada | Baynes Sound | eDNA | CODAR | community observatories | Fraser River Delta | ddl | earthquake | Geodesy | seamounts | marine protected areas | Arctic | Cambridge Bay | barkley canyon | folger pinnacle | Atlantic | camera | Coast Guard | rov | Story map

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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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Sep 12, 2018

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Jul 20, 2018

Jan 25, 2017

Are earthquakes on the rise?

With media coverage of the recent earthquakes in Italy (M6.6), New Zealand (M7.8), Japan (M6.9), and Papua New Guinea (M7.9), you might be wondering whether earthquake activity is increasing. Long-term earthquake statistics in the last 12 months indicate that it was an average year: there were no earthquakes of M8.0 or higher (one M8.0+ is the annual average) and 19 earthquakes with M7.0 - 7.9 (17 is the annual average). These statistics (Figure 1) show that...

Read more

earthquake | earthquake early warning | statistics | data | megathrust earthquake

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Aug 23, 2016

Canadian scientist awarded for exceptional contribution to Earth science!

Congratulations to Dr. Kelin Wang for being elected a Fellow of the American Geophysical Union (AGU), an international organization dedicated to advancing Earth and space sciences for the benefit of humanity.  Becoming a fellow of AGU is an honour provided to only 0.1% of AGU’s 62,000 plus members from over 140 countries.

Kelin and his students are studying the geodynamics of subduction zones, especially processes related to the generation of large earthquakes and tsunamis around the world. His models for earthquakes inform building codes, risk assessments, and tsunami preparedness along the Pacific coast of North America. This work is relevant to the tsunami research being done at Ocean Networks Canada (ONC).

...
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Kelin Wang | AG | tsunami | earthquake | cascadia | Dawei Gao | subduction zone | hazard assessment | detection

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Apr 24, 2015

ONC detects M6.1 earthquake near Haida Gwaii

Seismic sensors on Ocean Networks Canada’s seafloor observatory installed offshore Vancouver Island detected an earthquake in the Northeast Pacific Ocean on the morning of 24 April 13:56:16 UTC (7:00 a.m. PDT) 

The magnitude 6.1 earthquake struck offshore the Haida Gwaii Region, with its epicentre about 280 kilometres south west of Prince Rupert, British Columbia.

Figure1:  ONC Earthquake Sensors and 24 April earthquake epicentre  ...

Read more

earthquake | EEWS | earthquake early warning | Haida Gwaii

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Sep 12, 2017

Apr 24, 2014

Magnitude 6.6 Earthquake

Multiple Ocean Networks Canada instruments recorded a magnitude 6.6 earthquake that struck beneath the seafloor off northern Vancouver Island at 8:10 PM (Pacific Daylight Time), 23 April 2014. Shaking from the earthquake was felt throughout Vancouver Island and by many people on the lower mainland in southwestern British Columbia.

...
Read more

earthquake | tsunami | Bottom Pressure Recorder | seismometer | Hydrophone | marine acoustics

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Apr 2, 2014

Chilean quake detected by ONC seafloor instruments

On April 1 at 4:46:45 PM, a magnitude 8.2 earthquake occurred off Chile's Pacific coastline. Shortly afterward, Ocean Networks Canada seismometers detected the tremors as they crossed the North Pacific.

Travel times for tsunami propagation were also modeled by the National Tsunami Warning Center, with expected arrival of a small (2-4 cm) tsunami in coastal British Columbia beginning 15 hours after the event, around 7:00 AM Pacific Daylight Time.

For full story, see: Tsunami Alert follows 8.2 quake off Chile

Updates to come...

 

No stranger to seismic activity, Chile is one of the world¹s most earthquake-prone countries. In 2010, a...

Read more

chilean quake | earthquake | tsunami

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Apr 1, 2014

Tsunami alert follows 8.2 quake off Chile

On April 1 at 4:46:45 PM Pacific Daylight Time (23:46:45 UTC), a magnitude 8.2 earthquake occurred off Chile's Pacific coastline, according to the US Geological Survey. Ocean Networks Canada instrumenatation captured both ground shaking and a very small tsunami as they crossed the northeast Pacific.

Map showing epicentre and aftershocks.

Map of the epicentre and 16 aftershocks along the subduction zone between the Nazsca and South American...

Read more

earthquake | tsunami | Chile | tsunami warning | wave propagation | seismometer | seismic | Seismic Data | subduction | megathrust | tectonics | plate tectonics

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