Wednesday, 1/20/10, Public Square

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7 responses to “Wednesday, 1/20/10, Public Square

  1. I know there’s a way to differentiate between an earthquake and an aftershock, although I don’t know how it’s done. Does anyone know how long aftershocks usually last? All this devastation, all these people suffering — when does it let up and the rescuers get a break?

    “Port-au-Prince, Haiti (CNN) — A strong aftershock rocked Haiti on Wednesday morning just as much-needed medical aid was set to reach the earthquake-ravaged nation.

    The 6.1-magnitude aftershock was about 6.2 miles deep, with an epicenter about 35 miles (60 kilometers) west-southwest of the capital of Port-au-Prince, the U.S. Geological Survey said.

    It rattled people struggling to recover from the devastating 7.0-magnitude earthquake that walloped the impoverished country January 12, killing at least 72,000 people.

    Such a strong tremor can pose significant danger in a nation where damaged buildings are teetering precariously. The aftershock was the strongest to hit Haiti since last week’s original quake, the USGS said.”

  2. David B

    fyi.. on the Richter Scale:
    an earthquake that measures 5.0 on the Richter scale has a shaking amplitude 10 times larger than one that measures 4.0.

    One number lower is 1/10th the magnitude of the number above it.

  3. tosmarttobegop

    That was a sizeable aftershock and it is worse with all the damage already there.
    As to your question, it is a long explanation to true understand.

    But basically an Earth quake is caused by two plates moving pass each other.
    It take a great deal of pressure to build up before it happens but once the slide of the two plates happen.
    They can continue to slip some and that is what causes the aftershock.

    It will continue until the two plates finally can build up enough resistance to no long slide pass each other.
    Or slip either because of the plates coming to the point that they stop each other. Or friction is so great there is not enough movement to overcome it.

  4. wicked

    There was another earthquake a few days ago. Does anyone remember where it was? Somewhere near South America? In S.A.? I can’t remember. Not as bad as Haiti, but, still…

    I predict a volcanic eruption somewhere, sometime within the year. Earthquakes happening this close together means there’s instability in “middle earth.” I’m not trying to be Tokienish. I’ve kept a lazy eye on the frequency of earthquakes for a lot of years. Add TSTB’s explanation, and I see it as a sign the bigger things are happening that we don’t see. Hey, I’m not a scientist by any means, but that’s my prediction.

    • lilacluvr

      Guatemala…..and I think you’re right about the instability of the earth.

      At some point, nature has to take its course and teach humans a lesson – IMHO

      • wicked

        Thanks, lilac! It was just a blip in the news, so I couldn’t remember if it was S. America or Central. Not really all that far from Haiti, either. As the crow flies, at least.

        If only Michener had written about Haiti. I remember reading Hawaii back in high school, and what I remember most was all those early pages where he describes how the island formed. Volcanoes. Centennial reminds me of dinosaurs and tar pits.

  5. wicked

    And by the way, I’m sitting here eating fresh-from-the-oven Toll House (chocolate chip) cookies.

    Eat your hearts out, guys. LOL