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False Reports and Scare Stories

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  • Bob Conrich
    Tristan Volcano Seismic Activity Not Proven at the Moment Submitted by Tristan Times (Juanita Brock) 01.08.2004 Reports from several sources have been coming
    Message 1 of 1 , Aug 1, 2004
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      Tristan Volcano Seismic Activity Not Proven at the Moment
      Submitted by Tristan Times (Juanita Brock) 01.08.2004
      Reports from several sources have been coming in to Tristan Times Online about seismic activity around the 1961 volcano.
      TRISTAN VOLCANO SEISMIC ACTIVITY NOT PROVEN AT THE MOMENT
      By J. Brock (SARTMA-TDC)



      Reports from several sources have been coming in to Tristan Times Online about seismic activity around the 1961 volcano.
      They began to filter through on Friday, 30 July 2004 but at this stage, they have not been proven.

      According to Tristanians, the 1961 volcano smokes and even vibrates occasionally but no one pays any attention to it.

      SARTMA-TDC has searched sever geological survey websites and none have reported any seismic activity on Tristan da Cunha.
      However, if things change, Tristan Times Online will keep readers informed.

      Copyright © 2003-2004 Tristan Times


      ....................


      What sources? Where? There is a seismograph in Tristan,
      which reports by satellite to the U.S. National Earthquake
      Information Center. It has reported nothing recently
      except to say it's working.

      There was an earthquake in the region on 30 July, but the
      location is many hundreds of miles away and couldn't have
      been felt on Tristan:

      Magnitude 5.5 - SOUTH SANDWICH ISLANDS REGION
      2004 July 30 12:14:30 UTC
      Preliminary Earthquake Report
      U.S. Geological Survey, National Earthquake Information Center
      World Data Center for Seismology, Denver

      A moderate earthquake occurred at 12:14:30 (UTC) on Friday, July 30, 2004. The magnitude 5.5 event has been located in the
      SOUTH SANDWICH ISLANDS REGION. The hypocentral depth was estimated to be 38 km (24 miles). (This event has been reviewed by a
      seismologist.)

      Magnitude 5.5
      Date-Time Friday, July 30, 2004 at 12:14:30 (UTC) = Coordinated Universal Time
      Friday, July 30, 2004 at 10:14:30 AM = local time at epicenter
      Time of Earthquake in other Time Zones
      Location 57.182°S, 25.755°W
      Depth 38.3 km (23.8 miles)
      Region SOUTH SANDWICH ISLANDS REGION
      Distances
      105 km (65 miles) ESE of Visokoi Island, South Sandwich Islands
      205 km (130 miles) NNE of Bristol Island, South Sandwich Islands
      3525 km (2190 miles) SE of BUENOS AIRES, Argentina
      Location Uncertainty horizontal +/- 12.4 km (7.7 miles); depth +/- 17.6 km (10.9 miles)
      Parameters Nst= 98, Nph= 98, Dmin=>999 km, Rmss=0.84 sec, Gp= 54°,
      M-type=teleseismic moment magnitude (Mw), Version=Q
      Source USGS NEIC (WDCS-D)
      Event ID uslnam
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