I lived in San Francisco for more than 50 years. As you can imagine one of my hobbies was earthquakes and volcanoes. I personally went to visit most of the big ones myself what an awesome sight to see. You don’t realize how big they are until you actually climb to the top of the thing and look at the steam coming out of the fumaroles at the top and you hear the hissing of the pressure that spitting out that Steam – it can be overwhelming. But there are two faults in the northern hemisphere that scare me more than any others – the Cascadia Subduction and the New Madrid Fault zones.
I actually hiked alone to the top of Mount Shasta crossed the glacier to the peak and had a soak in the hot pools at the top 14000+ feet, it was an experience I will never forget. I didn’t have real sunglasses when I went up there – they were drug store fakes – the next day after I came down I was in the hospital because my eyes swelled up because of the UV radiation that I was exposed to. I almost lost my sight completely! I have all the respect in the world now for UV as you should too.
This video contains some of the latest collected data on Cascadia Zone the normal behavior for Cascadia historically is that it throws temper tantrums before the big blow up. It rattles and rumbles and Shakes and shimmies before the big one finally comes loose – just like it’s shaking and rattling today. They say in this video and only has big quakes – I don’t know why they say that – you look at the history you’ll see that that’s not true.
The New Madrid on the other hand – she’s a sleeping monster. She’s quiet as a church mouse and gives no warnings that she’s about to have a Blow-up. They are few and far between but they are awesome in their destructive power when they happen. One day you just wake up and the New Madrid will just let go disaster and destruction in just a few short minutes and your world will change forever after that. There’s no data here on the New Madrid but there’s some really good data to hear on Cascadia _ enjoy the video..
Published on Oct 9, 2016
The 1,130km stretch of coastline from Vancouver, Canada to Mendocino, California, harbours an underwater threat just over 110km offshore – the seismic fault, Cascadia. Places like Japan, Chile and North America’s Pacific Northwest all fall in what’s known as subduction zones – ie, where one tectonic plate dives under another.
The potential seismic activity from one of these plates ‘popping’ from on top of the other equates to an entire region affected by earthquake symptoms.
The Cascadia Initiative (CI) is a years-long project that has been developed to study the effects of the fault and the two plates responsible for the action: Juan de Fuca and Gorda.