USGS Studying New Madrid Seismic Zone Today in Poinsett County - KAIT Jonesboro, AR - Region 8 News, weather, sports

Lepanto, AR

USGS Studying New Madrid Seismic Zone Today in Poinsett County

MAY 16, 2006 - Posted at 11:16 a.m. CST

 

LEPANTO, AR - The U.S. Geological Survey, in collaboration with the University of Memphis and the University of Texas, is imaging the sediment beneath the Mississippi River valley near Lepanto today.

By vibrating the ground and listening to the echoes, the high-resolution seismic-imaging study will investigate the layering, stiffness, and faulting of the sediments to improve the understanding of earthquake hazards.  Today's work is part of a pilot for a multi-year effort to acquire a continuous seismic cross section to examine past earthquake history in the New Madrid seismic zone.

A small, rubber-tired vibroseis truck will generate vibrations to create small waves that will travel into the earth, will be reflected by layered sediment and then recorded by a 720-meter long string of seismometers spread out along the survey line.  The vibroseis truck is preferred over explosions as an energy source near cities and towns because the vibrations are spread out over ten to 20 seconds, rather than being suddenly released, and because no drilling of shot holes is needed.  The truck shakes the ground slightly, then moves on and leaves nothing behind.  Scientists say you can feel a slight shaking in the bottom of your feed, if you stand close to the truck.

 

  • Region 8 News</span><a class="customMoreLink" href="/Global/category.asp?C=4391" target="_top">More >></a>Region 8 NewsMore>>

  • breaking

    Crews responding to crash near Datto

    Crews responding to crash near Datto

    Tuesday, July 25 2017 12:36 PM EDT2017-07-25 16:36:21 GMT
    Tuesday, July 25 2017 12:41 PM EDT2017-07-25 16:41:44 GMT

    First responders in Clay County are headed to a reported crash near Datto.

    First responders in Clay County are headed to a reported crash near Datto.

  • breaking

    Deputy, city employee injured in Monette explosion

    Deputy, city employee injured in Monette explosion

    Tuesday, July 25 2017 10:28 AM EDT2017-07-25 14:28:54 GMT
    Tuesday, July 25 2017 12:26 PM EDT2017-07-25 16:26:43 GMT

    A Craighead County sheriff's deputy and a Monette city employee were injured following an explosion in Monette Tuesday.

    A Craighead County sheriff's deputy and a Monette city employee were injured following an explosion in Monette Tuesday.

  • Fire dept. celebrates new ISO rating

    Fire dept. celebrates new ISO rating

    Tuesday, April 25 2017 8:54 PM EDT2017-04-26 00:54:59 GMT
    Tuesday, July 25 2017 12:17 PM EDT2017-07-25 16:17:44 GMT
    (Source: KAIT-TV)(Source: KAIT-TV)

    The Cushman Fire Department met their goal of lowering their ISO from a nine to a six rating. 

    The Cushman Fire Department met their goal of lowering their ISO from a nine to a six rating. 

Powered by Frankly