#in the same range as Sumatra 2004 or Alaska 1964 | Explore Tumblr posts and blogs

epersonae · 9 months ago

Note

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The other big clue about the 1700 Cascadia quake, aside from that tsunami, was something called a "ghost forest" - a collection of dead tree stumps all killed at once by inundation with salt water when the land dropped by six feet all at once. Tree ring analysis in comparison with trees still living nearby dated the earthquake to sometime around 1699 or 1700, which matched up with that "orphan tsunami"!

[send me an emoji and I will send you a fun* fact about my special interest(s)] *“fun” is kind of relative here tbh

#I love both of the phrases 'ghost forest' and 'orphan tsunami'#the estimated magnitude of that quake was 8.7-9.2 #which is FUCKING ENORMOUS #in the same range as Sumatra 2004 or Alaska 1964 #(yeah we might get one of those someday - could happen tomorrow or not in anyone living's lifetime)#(the weird thing about geological disasters is that they tend to happen on geological timescales)#('often' is measured in hundreds or even thousands of years)#(which tbh is kind of why I'm so chill about quakes)#(also I was in a bunch in SoCal plus Nisqually 2001 and most of the time it's 30-90 very dramatic seconds and then it's fine)#ask games

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