Magnitude 5.4* in the Pacific/Antarctic Ocean
This morning, October 12, 2015 at 08:-5 UTC, a magnitude 5.4* , depth 21 km, earthquake was observed at E1TX. The epicenter is located within New Zealand. The images show the basemap of the epicenter, the screenshot from the EQ-1 seismometer, and the extracted seismogram.
*Magnitudes are presented a body magnitude.
Local Noise Can Be Misleading
For 4 weeks, TX-ESP has observed very interesting patterns, during the local night time, on the EQ-1. When the “event” is extracted, the same pattern is observed – a “bell shaped” increase in amplitude without a preceding amplitude spike, nor proceeding longer period waves. Our hypothesis is that E1TX is recording “noise” produced by either (1) local highway construction (2) next-door construction at the large ExxonMobil campus OR (3) frac jobs performed in producing wells in the Conroe area. See the snapshots below of the event occurring at 09:50 UTC (or 4:40 AM local CST). WHAT DO YOU THINK?
Earthquakes on the Mid-Atlantic Ocean Floor
A series of earthquakes have occurred along the Trans-Atlantic Margin during the last 24 hours. The images below show the earthquake extraction, screenshot from the EQ-1 at E1TX, and the basemap of the epicenter. Three events are shown in this post, time given in hrs, CTU:
September 28, 2015 at 00:34 M5.8 Depth 10km, at 00:42 M4.9 Depth 10km, and 00:45 hrs M5.0 Depth 10km
CLICK ON THE SNAPSHOT TO SEE ALL EVENTS.
Aftershocks in Chile have Magnitudes > 6.0 . On 9-17-2015 at 0355 hrs GMT, an aftershock with a M6.5, Depth 35km was recorded at E1TX in Spring, Texas. A second and many times larger aftershock, also was recorded minutes later on 09-17-2015 at 0410 hrs GMT, M6.7, Depth 30km. Please CLICK on the attached images of the seismogram screenshot, the basemap of the epicenters, and the extracted seismic waves from both events. The social impact is discussed on iris.edu and cnn.com
Chilean Earthquake Triggers Tsunami Warnings
Today, 09-16-15 at 2254hrs GMT, a Magnitude 8.3, Depth 25km occurred in Central Chile. Please CLICK on the attached image(s) of this rare event and devastating natural disaster: