Tag Archives: tsunami

M7.7 Earthquake in the Queen Charolette Islands, BC

Tonight, BC had a big earthquake today (M7.7), with substantial aftershocks (M5.8, M4.8, M5.1, M4.7, M5.1…). Tsunami warnings were issued for the north coast and western Vancouver Island. Movement was primarily lateral, not vertical, so hopefully the tsunami will be … Continue reading

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CKNW: The World Today Weekend with Sean Leslie

If you’re looking for more information from the interview on The World Today Weekend with Sean Leslie, you may want to read the press release from the International Pacific Research Center about tsunami debris distribution over time (Hawaii within 2 … Continue reading

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References: Earthquakes & Tsunami: Current Events & Local Hazards

This is a summary of my recent talk, with links to sources and more information. Geoscience Background Plate Tectonics The surface of the Earth is composed of tectonic plates. They move relative to each other at about the same rate … Continue reading

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Talk: Earthquakes & Tsunami: Current Events & Local Hazards

If you’re in the Vancouver region and have questions about the recent hazards and any implications for us, I’m giving an open-to-the-public talk. The events will run about 20 minutes followed by unlimited time for questions. Title: Earthquakes & Tsunami: … Continue reading

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EXERCISE: Tsunami Warning Communication

Today, the Caribbean, US Pacific, and British Columbia are holding a tsunami exercise. To be perfectly clear: this is a drill, a way to practice response and communication, and is not a regularly scheduled earthquake and tsunami. This event is … Continue reading

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Review: StarTalk Radio “A Violent Earth”

I read absurdly quickly and am not an auditory learner, so I usually skip podcasts in favour of text or videos. However, I have a soft spot for Neil Degrasse Tyson, so when his StarTalk Radio covered current disaster events, … Continue reading

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Tsunami in Open Ocean

Tsunami in open ocean have a very small wave height (10cm to 1 m) with very long wavelengths, to the point where they are visually undetectable in open ocean. Which leads to a question: what is up with this footage? … Continue reading

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Tsunami in Bays

Once again, this post is prompted by repeated questions from friends (particularly those in the Bay Area) about what happens to tsunami as they enter bays. Two things can happen: Diffusion: waves spread out in bays by refraction, reducing the … Continue reading

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Tsunami on the West Coast

The two main tectonic regions of the west coast of North America are the transverse fault zone area of California, and the subduction zone of the Pacific Northwest (Oregon, Washington, and British Columbia). The two zones have very different seismic … Continue reading

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An Introduction to Tsunami

The 11 March 2011 earthquake near Honshu, Japan triggered a tsunami that spread across the Pacific Ocean. The tsunami arrived an hour before I gave the first tsunami lecture for the Natural Catastrophes class. In that context, it seems an … Continue reading

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