Friday, March 13, 2015

[Geology2] Fw: 2015-03-14 04:51:28 UPDATED: (M2.8) TENNESSEE-NORTH CAROLINA BORDER REGION 35.4 -83.3 (63922)



We have had about 5 quakes in three days in the Smokey Mountains along the TN-NC line-- plus a couple within the prior 3 weeks.   It is unusual here to have more than one every 5 years or so.  I haven't checked the location against known faults to see if this is on a known active fault/new fault/reactivated fault or cavern collapse  etc.  Around 3-3.6 km it is possible for a cavern collapse as the existing Smokeys are rootless mountains consisting of archaic sandstones/quartzite which was thrust over Cambrian-aged limestones( See geologic "coves".  I await the researcher's analysis.
Eman

----- Forwarded Message -----
From: USGS ENS <ens@ens.usgs.gov>
To: mstreman53@yahoo.com
Sent: Saturday, March 14, 2015 1:28 AM
Subject: 2015-03-14 04:51:28 UPDATED: (M2.8) TENNESSEE-NORTH CAROLINA BORDER REGION 35.4 -83.3 (63922)

Globe with Earthquake Location

M2.8 - TENNESSEE-NORTH CAROLINA BORDER REGION

Preliminary Earthquake Report
Magnitude 2.8
Date-Time
  • 14 Mar 2015 04:51:28 UTC
  • 14 Mar 2015 00:51:29 near epicenter
  • 13 Mar 2015 23:51:28 standard time in your timezone
Location 35.430N 83.262W
Depth 9 km
Distances
  • 6 km (4 mi) SE of Cherokee, North Carolina
  • 55 km (34 mi) SSE of Sevierville, Tennessee
  • 66 km (41 mi) WSW of Asheville, North Carolina
  • 66 km (41 mi) SE of Seymour, Tennessee
  • 213 km (132 mi) NNE of Atlanta, Georgia
Location Uncertainty Horizontal: 0.9 km; Vertical 3.6 km
Parameters Nph = 23; Dmin = 41.0 km; Rmss = 0.39 seconds; Gp = 91°
Version = 2
Event ID se 60094161 ***This event supersedes event US10001mbe.
For updates, maps, and technical information, see: Event Page or USGS Earthquake Hazards Program
Southeast US Seismic Network
U.S. Geological Survey
University of Memphis

http://www.ceri.memphis.edu/seismic


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Posted by: MEM <mstreman53@yahoo.com>



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