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Cascadia subduction zone

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.

...

Read more

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

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In June 2016, Ocean Networks Canada (ONC) successfully deployed and connected the first of several earthquake early warning sensors on the Cascadia subduction zone. It will be part of a network of seismic sensors that ONC will install underwater and on land as part of an earthquake early warning system funded by Emergency Management British Columbia (EMBC).

The first EEWS sensor being deployed on the Cascadia Subduction Zone.

The first EEWS sensor being deployed on the Cascadia subduction zone.

In February...

Read more

earthquake early warning | EEWS | Cascadia subduction zone | accelerometer | barkley canyon

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Northern California Earthquake Strikes Southern Cascadia Subduction Zone

10 March 2014, 05:18 UTC (10:18 pm local time) a magnitude 6.8 earthquake struck the southern end of Cascadia subduction zone. The epicentre location of the earthquake was about 50 km west of the California coast. During the subsequent few hours many aftershocks followed in the same area (see map).

Map of earthquake and aftershock locations.

This map shows the location of the main shock and aftershocks at the Mendocino Triple Junction between the North America, Pacific and Gorda tectonic plates.

Ocean Networks Canada's NEPTUNE observatory is about 900 km to the...

Read more

earthquake | seismometer | subduction | Cascadia subduction zone | aftershock | triple junction | Ocean Bottom Seismometer | P-waves | S-waves | surface waves | tectonics

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Tilting at Boreholes

The W.M. Keck Foundation has awarded $1 Million to Woods Hole Oceanographic Institution (WHOI) for a new geodesy observatory to be connected to Ocean Networks Canada and the Ocean Observatories Initiative Regional Scale Nodes (OOI RSN). This interdisciplinary project, led by Dr.Jeff McGuire and John Collins of WHOI, will allow scientists to monitor three Cascadia subduction zone segments off the coasts of Vancouver Island, Washington and Oregon. Along this subduction zone, the Juan de Fuca plate...

Read more

Woods Hole Oceanographic Institution | WHOI | Cascadia subduction zone | clayoquot slope | earthquake | ACORK | cork | tsunami | borehole

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