Hey guys. If you monitor my YouTube channel you may have already watched my recent video about the Dotsero Volcano in Colorado. There has been some very interesting seismicity as of late and there was just another earthquake reported for December 14, 2018. 2018 has seen the highest seismicity for the Dotsero Volcanic area. The seismicity is not occurring directly under Dotsero, but is occurring just to the west. I personally believe most of the events that occur near Glenwood Springs, Colorado (just west of Dotsero where seismicity is increasing) are connected to the Dotsero magma system. I do not have sufficient proof yet but that is what I truly believe. There was also another unreported earthquake just prior to the M2.5. Both of these events will be shown and both events have very peculiar characteristics. Please click the title of this post or "read more" to continue.
Before I start, if you have not seen my video about the Dotsero Volcano in Colorado and the increasing seismicity just to the west then please watch it below. You should watch it since some of the info in this post may not make sense. If you wish to watch this on YouTube, or you wish to simply goto the description box or comment sections, please CLICK HERE.
Now the first of two images directly above shows the location of the M2.5, the orange triangle represents the closest seismic station to Glenwood Springs, and the orange star represents the Dotsero Volcano. The M2.5 that recently occurred struck right where most of the earthquakes in this area occur: just west of the Dotsero Volcano. Although this volcano is stated to remain at the moderate threat level, meaning USGS does not believe it is extinct, this area barely has any seismic stations at all! It is sad station O20A is basically the closest station to the Dotsero Volcano. There are only 2 other stations in this area that are basically just as far away. I suggest they really should put new seismic stations in this area.
The second image shows the USGS event page for this earthquake. Marking the 7th earthquake for this area of 2018, a count which is higher than the past 18 years, the M2.5 occurred at 23:35utc on December 14, 2018 reportedly at 2.6km in depth. The most intense seismic activity that I could find for over two decades was less than a week ago. There was a 3.2, 3.4, and 3.6 all in the space of 1 hour or so. Please watch the video above. It contains some good info about this volcano and these events, which I believe are related. Notice how over 4 people felt this earthquake! Remember the number 4 is only the number of people that reported feeling this to USGS. Not everyone does that.
Now below are the seismogram/spectrogram/spectral plots of this earthquake. I also include another 3-plot image of a possible unreported earthquake that occurred near this same location just prior to the M2.5 which had some odd low frequency characteristics. Even the M2.5 had some weird, and strong, very low frequencies. I do think something could be changing with the Dotsero volcano especially with how the main crater was formed. Please pay attention to chart labels (vertical and horizontal) and any captions beneath any images. 2018 is the most active year for the Dotsero volcano and the surrounding area. Why is that?
Here is the unreported earthquake that occurred 2 hours or so prior to the M2.5. Notice the near perfect waveform oscillations on the seismogram plot. Well those oscillations seem to have a dominant frequency around 0.8Hz and around 2Hz. Since this did appear on the very few surrounding stations, I believe this was definitely some type of tremor event caused by a viscous fluid such as magma (or is magma considered plasma?). You can see a quick spike at the beginning of the event but the majority of it seems to carry quite a low frequency. Some could argue this was a quarry blast but I am unaware of any quarries in this area. I also doubt it is a quarry blast since it traveled quite far for how weak it was. Regardless of cause, this unreported event was very interesting.
Okay, check this out. This is the M2.5 they reported. Look at the seismogram and spectrogram plots! Wow! Those are some very strong, very low frequencies. This event can definitely not be considered a normal high frequency tectonic event. There must have been some other process going on here. And since there is known to be magma in the area, it is likely the increase of seismicity lately, along with this earthquake, could be related to the magma system becoming restless. Notice the dominant frequencies of this event rest at 0.4Hz! This was the most strange low frequency earthquake, or hybrid earthquake, I have ever seen.
Here is the same exact earthquake I just showed except with a 0.7Hz high pass filter (that means all frequencies below 0.7Hz will be faded out). Notice how, even with a filter added, the dominant frequencies are still quite low! What caused this earthquake? And how come the strongest part of this M2.5 was dominant around 0.4Hz? How is that even possible? Something is changing near Colorado's only known volcano. Please join me in monitoring this area and others! God bless and have a great day. Merry Christmas!
Ben Ferraiuolo is a fast learner and someone who will always stand for the truth. Visit "About Me" for more!