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seismometer

Aug 26, 2014

Sharing Ocean Data

- Dr. Kim Juniper,  Director of User Engagement

Ocean Networks Canada (ONC) operates the world’s largest civilian observatory network for monitoring the oceans. Maintaining ONC’s nearly 900 kilometres of networked underwater sensors requires the cooperation of other major ocean stakeholders in the northeast Pacific, Salish Sea and western Arctic. The fishing industry and the Canadian Coast Guard are kept up to date on locations of infrastructure to minimize the risk of strikes by trawl gear or interference with safe navigation. 

In addition to the physical infrastructure, ONC has agreements with other ocean stakeholders related to protection of sensitive...

Read more

hydrophones | navy | seismometer | data divert | field testing | Oceans 2.0 | data | policy

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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 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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Mar 10, 2014

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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Jan 23, 2018

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Mar 10, 2014

Northern California Earthquake Detected by NEPTUNE Seismometers

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. Ocean Networks Canada seismometers in Cascadia Basin (NV.NC27), Barkley Canyon (NV.NCBC) and Clayoquot Slope (NV.NC89) recorded the powerful main shock as well as some of the larger (up to magnitude 4.6) aftershocks about 2 minutes after the event.

 

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earthquake | california | seismometer

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ONC detects M6.1 earthquake near Haida Gwaii
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Oct 27, 2012

Haida Gwaii Earthquake and Tsunami

A powerful magnitude 7.7 earthquake struck central Moresby Island in the Haida Gwaii archipelago at 8:04PM PDT, 27 October 2012. Residents along the west coast—from Alaska to Vancouver—also felt several aftershocks up to magnitude 5.8. However, no major damage or injuries were reported. This was the largest temblor to hit Canada since 1949, when an 8.1-magnitude quake hit west of the Queen Charlotte Islands, in the same area.

The following plots show both seismic and bottom pressure data collected by Ocean Networks Canada...

Read more

earthquake | Haida Gwaii | tsunami | seismometer | Bottom Pressure Recorder | seismograph | subduction

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Dec 9, 2011

Hydrate Growth at Bullseye Vent?

Close-up views of exposed gas hydrates in Barkley Canyon.

Gas hydrates are ice-like solids composed of natural gas, usually methane in marine environments, and water. Hydrates are known to exist in the Cascadia margin, west of Vancouver Island, beneath the seafloor. Sediment stiffness is increased by frozen hydrates, like ice in winter mud. The degree of stiffness is an indicator of the amount of hydrate present per unit volume. Gas hydrate...

Read more

clayoquot slope | barkley canyon | gas hydrates | cascadia | seafloor compliance | Bullseye Vent | seismometer | differential pressure gauge

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Mar 4, 2010

Chilean Earthquake and Tsunami

Energy from the Chilean earthquake radiated into the Pacific Ocean during the first 30 hours after the earthquake of 27 Feb 2010. DFO-IOS.

Major Earthquake

On Saturday, Feb. 27 2010, 0634UTC, a magnitude 8.8 earthquake occurred off the coast of Chile. A tsunami advisory was issued for the BC coast. According to the USGS,...

Read more

earthquake | tsunami | Chile | seismometer | Seismic Data

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