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Response to Blue_In_AK (Reply #18)

Thu Sep 25, 2014, 01:24 PM

23. I've been through a bunch, too...

...in Puerto Rico and California. The one that got to me was a quake in late '86 when I lived between LA and San Diego. Going from memory, it was about 2 a.m. local time and the walls were wobbling. I yelled and got everybody out of the house -- about seven guys sharing a big house.

We went outside and noticed the water in the rectangular swimming pool had formed standing waves, that moved from one side of the pool to the other, across the shorter dimension. The waves were coming from the direction of the ocean, where we later learned was where the quake originated.

Long story short: A couple weeks later, another quake. Same thing, woke everybody up who didn't yell at me for bothering them -- except this time the standing waves traveled the longer length of the pool. Amazing demonstration of shock waves, they provided clues from the direction of the epicenters.

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