tsunami

Oct 21, 2015

ONC’s new dashboard tracks earthquakes around the world

A magnitude 7.1 earthquake occurred at 21:52:02 (UTC) on October 20, 2015, near the Vanuatu Islands in the south Pacific’s volcanically active region located on the Ring of Fire.

 

Ocean Networks Canada (ONC) is delighted to announce a new interactive dashboard that lets you explore recent earthquakes occurring anywhere in the world, like this one, and those right on our doorstep on the west coast of Canada.

Seafloor seismometers that are connected to the ONC observatory in the northeast Pacific detect signals from most major earthquakes, no matter where they originate on...

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earthquakes | seismic | tsunami

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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.

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

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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...

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chilean quake | earthquake | tsunami

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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...

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

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Ocean-borne radiation from Fukushima

Ken Denman and Richard Dewey | Ocean Networks Canada

There is a broad consensus among the scientific community that ocean-borne radiation from the Fukushima nuclear reactor does not pose a significant risk to humans in British Columbia, relative to other environmental risks. Recent (2016) and on-going studies by Dr. Jay Cullen of UVic posted on his project site InFORM and reports from similar WHOI studies along the west coast of the U.S. indicate the amount of tracable material reaching North America is small. Nevertheless, many people are concerned about what they have heard from various other sources.

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radioactivity | Fukushima | tsunami | nuclear | radiation | cesium | Chernobyl

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Radioactivity from Fukushima Nuclear Power Plant

A Brief Review of Preliminary Studies into the Oceanic Impact of Radionuclides from the Fukushima Dai-ichi Nuclear Power Plant

Drs. Richard Dewey, S. Kim Juniper, Steve Mihaly, Akash Sastri, Ocean Networks Canada

Several inquiries have been made to Ocean Networks Canada with regard to the fate and severity of oceanic contamination from the leakage of radioactive material into the Pacific Ocean as a result of the March 2011 damage to the Fukushima Dai-ichi Nuclear Power Plant (FNPP). There are on-going studies and assessments of the impacts on the ocean, primarily by the World Health Organization (1) and the Japan Agency for Marine-Earth Science and Technology (Jamstec). New or alternative results will be integrated into this living review document as they become...

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Fukushima | radioactivity | contamination | Tohoku | japan | earthquake | tsunami | nuclear | cesium | ocean currents

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Introduction to Cascadia Basin

An otherworldly-looking sea spider at ONC's Cascadia Basin observatory.

Cascadia Basin at a Glance:

  • Region: Located in the centre of Cascadia Basin—a heavily sedimented abyssal plain region, which extends from the base of the continental margin to the mid-ocean ridge.
  • Number of Instrument Platforms: 1
    • ...
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tsunami | hydrology | hydrogeology | deep biosphere | cork | IODP | ODP

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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."

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

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New App Tracks Tsunami Debris

November 29, 2012

A new app is now available for reporting large, unusual and potentially hazardous marine debris–especially items that may have been swept into the sea by Japan’s devastating March 2011 tsunami.

Ocean Networks Canada's Coastbuster App.

The March 2011 Japanese tsunami dispersed roughly 1.5 million tons of debris eastward across the Pacific Ocean. Authorities believe the majority of this debris will arrive...

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Coastbuster | tsunami | debris tracking | app | mobile app | iTunes | Google Play

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Haida Gwaii Quake Monitored by NEPTUNE Canada

Just after 8 pm on October 27, a magnitude 7.7 earthquake struck off the coast of BC, at a depth of 17 kilometres and centred 139 km south of Masset in the Haida Gwaii region.

Residents along the west coast—from Alaska to the lower mainland—also felt numerous aftershocks up to magnitude 5.8. No major damage or injuries have been reported.

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Although similar in size to the earthquakes in Japan (2011) and Chile (2010) this event represents the first regional tsunami tracked by the NEPTUNE observatory.

"Ocean Networks Canada...

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earthquake | Haida Gwaii | Seismic Data | BPR | tsunami | Bottom Pressure Recorder

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