Is the West Coast Toast? Let’s Talk Cascadia!

I can stare into the mouth of Mount St. Helens without flinching, begging her to erupt. I can hike up river valleys draining Mount Rainier, and just make a mental note to scramble uphill if it sounds like a mudslide’s coming. I’ve tramped around Mount Baker without once worrying about the fact it’s active. Volcanoes don’t scare me a bit. Okay, I lie, they scare me a wee bit, just enough that I have a healthy respect for their power and refuse to buy property in their hazard zones.

Where I go all white-knuckle and stark terror is on Seattle’s few double-decker roads. Whenever I have to take the southbound I-5 express lanes, I’m staring up at the freeway above, and out toward the Cascadia subduction zone off the coast, and begging it to please oh please not choose this particular instant to rip. Whenever I’m on the coast, the first thing I’m looking for is the quickest route to high ground. See, I know that the Cascadia subduction zone is prone to enormous earthquakes, much like the one that devastated an appreciable chunk of Japan in 2011, and I also know that earthquakes don’t give any warning before they hit. One instant, you’re going about life as usual. The next, the ground is shaking, things are falling, and there’s nothing you can do but ride it out. Well, there’s plenty of safety tips you can follow. But I much prefer volcanoes, which generally give more notice. Also, those generally don’t sink the coastline several feet.

Image shows Lockwood, a man with white hair and beard wearing plaid and denim, standing in the hollow center of a low stump, roots radiating around him through the sand and pools of saltwater.
Lockwood stands on the stump of a gigantic spruce tree at Sunset Bay, Oregon. It was killed more than 1,000 years ago when a massive subduction zone quake dropped the coastline and drowned the forest.

Cascadia terrifies me, people. The idea of it reduces me to a quivering mass of gibbering dread if I allow my thoughts to dwell upon it too long. So I’m glad it’s other people’s jobs to dwell. And they’ve got great news for us! The west coast won’t quite be toast. Our emergency planners are all, we’ve got this. Continue reading “Is the West Coast Toast? Let’s Talk Cascadia!”

Is the West Coast Toast? Let’s Talk Cascadia!
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New at Rosetta Stones: The Geologic Headaches of Constructing Sochi’s Olympic Village

Are you kinda excited for the Winter Olympics, my darlings? I mean, despite the fact it’s in Russia, which enjoys persecuting gay people cheerily waving rainbow flags at the opening ceremonies when it’s not busy claiming they don’t exist. And yes, they destroyed some perfectly good wetlands and dumped construction waste all over a pretty resort town in order to create structures on dangerous ground.

But that’s the fascinating part! Lots of geological consideration went in to all that construction. I had a look at one of the papers written before the first hole was dug, and yikes, is this ever complex. You may or may not love this year’s Winter Olympics, but you’ll definitely find the geology behind it interesting. Go check it out.

Edited to add: I stumbled across a seismograph of what Seahawks fans do to the ground round here, and just couldn’t help myself. Behold, the seismic impact of Seahawks fans. I’m coining the term anthropogenic seismicity if it hasn’t already been done.

New at Rosetta Stones: The Geologic Headaches of Constructing Sochi’s Olympic Village