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File:New Madrid Seismic Zone activity 1974-2011.svg

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Original file (SVG file, nominally 747 × 788 pixels, file size: 1.73 MB)

Summary

Description
English: Earthquakes recorded in the New Madrid Seismic Zone — in the Mississippi River Valley.
  • Located primarily through Arkansas, Missouri, and Tennessee in the central United States from June 1974 to July 2011.
  • Without indicication of magnitude. Most of the tremors represented on the map were below the threshold of human sensitivity. There are 6057 tremors on this map, which includes a certain number not on the New Madrid faults.
  • Quake epicenters are depicted with small circles with an opacity of 33%, and the opacity is cumulative when circles overlap. Therefore areas with multiple closely spaced quakes over time will be covered in deeper shades of red.
Date
Source Own work
Author Kbh3rd
Other versions
Low-resolution bitmap from the USGS

Map information

Polyconic projection focused at 36.5 N 89.5 W, described in "proj4" format as:

  • +proj=poly +lat_0=36.5 +lon_0=-89.5 +x_0=0 +y_0=0 +ellps=WGS84 +units=m +no_defs
Map point Longitude Latitude
Upper-left -91.402011 37.435457
Lower-right -88.476945 34.954139
Center -89.916299 36.204010

Map created with shptosvg.pl and inkscape.

Paducah is in the wrong location on this map...

Licensing

I, the copyright holder of this work, hereby publish it under the following license:
w:en:Creative Commons
attribution share alike
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You are free:
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Under the following conditions:
  • attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
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depicts

inception

30 December 2011

media type

image/svg+xml

File history

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Date/TimeThumbnailDimensionsUserComment
current03:32, 31 December 2011Thumbnail for version as of 03:32, 31 December 2011747 × 788 (1.73 MB)Kbh3rd

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