New Madrid Seismic Zone Seismograph Readings
Are you looking for a reading of a recent quake? Go to CERI helicorder readings. Choose SLU or CERI, then perhaps choose "New Madrid" reading. Here are Kentucky seismographs.
- Seismograph
A device that detects and records the vibrations of an earthquake. - Seismometer
The sensor part of an instrument that detects motions of the Earth's surface caused by seismic waves produced during an earthquake. A seismograph records the ground motion. - Helicorder
It's part of a seismograph.
Oct. 18, 2006 had six quakes in the New Madrid seismic zone. The "ones" are usually not noticed by those nearby. A "three" STARTS to be felt. The 3.4 magnitude, 40 seconds before 4pm was felt by the community of Lilbourn, but did little or no damage.
Oct 18, 2006 New Madrid Seismic Zone Shakes
First column is magnitude
Figures 7.0, 8.0, 7.6, etc, following the coordinates, are quake depth in km.
1.5 2006/10/18 23:10:18 36.540N 89.650W 7.0 ( 8 mi) WSW of New Madrid, MO
1.5 2006/10/18 22:45:31 36.540N 89.640W 8.0 ( 7 mi) WSW of New Madrid, MO
1.6 2006/10/18 20:02:26 36.530N 89.640W 7.6 ( 7 mi) WSW of New Madrid, MO
1.6 2006/10/18 19:57:08 36.530N 89.640W 7.1 ( 7 mi) WSW of New Madrid, MO
1.7 2006/10/18 17:08:22 36.060N 89.810W 7.5 (11 mi) NE of Blytheville, AR
3.4 2006/10/18 15:59:21 36.540N 89.640W 7.7 ( 7 mi) W of New Madrid, MO
Below are the seismic readings of the 3.4 quake from the CERI helicorder readings.
1. Portageville reading - about 16 miles away. Note the large green squiggle on right, near the 21:15. Local time is on left... 16:00 is 4pm. The 3.4 magnitude quake happened 40 seconds before 4pm.
We offer no explanations for the other squiggles. Anything that produces ground vibrations could be recorded, for example a car that passes by the seismometer. We don't see the other quakes on the chart. Again, a 3.4 magnitude quake just BEGINS to be newsworthy.
