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Posted by Oren on May 11, 2008, 8:33 pm
wrote:
>Hi gang!
>
>Just talked to son in Indiana today, for first time since the earthquake
>(about a month ago?) He just
>noticed that some shingles around his chimney appear pushed up and
>thinks, perhaps, the quake
>might have caused movement of the chimney. He said the morning of the
>quake, he woke from
>a very sound sleep because it sounded like someone trying to break in,
>kind of like the thumping
>of a washing machine when the load isn't balanced. Wow! I've been
>through some very mild ones,
>but nothing like that. He has full basement, with wide fireplace in
>basement, so it is probably pretty sturdy.
>On end of house. Can a chimney like that move that much without
>cracking? he hasn't looked real
>close, but is very good about taking care of the house and does lots of
>his own work.
>
>The only quakes I have experienced didn't make a sound, other than
>knick-knacks rattling on the
>shelf or dishes on the dinner table. Do quakes make a sound like that
>without structural sounds?
>Eek!
I awoke one night in Las Vegas to a sound. Then tremble came along and
the shaking. A local in Reno, NV described his as a vehicle hitting
the house.
In a Sports Bar 11 miles away, the moved customers outside when the
bottles shook :)
Listening to Earthquakes
Created by Andy Michael, USGS, and Daniel Ross, 12 year old USGS
Volunteer for Science.
.........
To learn about this we will convert the shaking during earthquakes to
sound and then listen to the sounds.
Converting Shaking to Sound
........
http://earthquake.usgs.gov/learning/listen/index.php
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