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Yellowstone Caldera, WY

Feb. 16, 2019 Mary Lake Swarm

2/17/2019

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On February 16, 2019 a small but energetic swarm struck right near Mary Lake at Yellowstone. This type of rapid fire activity does occur at many locations within Yellowstone, but most of the time the most energetic swarms are centered around Yellowstone Lake and West Thumb Lake. Please CLICK HERE if you wish to see my page dedicated to 18 rapid fire earthquake swarms near West Thumb Lake from 2018 to 2014. Prior to 2014, it was hard to find these at such quantity. However, I am getting off topic. If you wish to see the Feb. 16, 2019 rapid fire swarm near Mary Lake, which contained approximately 20 micro-quakes within 13 minutes, then please click the title of this post or "read more" to continue.

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The first image you see above is a map of the area at Yellowstone just north of Yellowstone Lake. I have labeled and posted the locations to the 3 closest seismic stations to this minor rapid-fire micro-quake swarm. I have also circled the likely swarm epicenter based on P wave arrivals on neighboring stations. Sadly, none of the earthquakes within this swarm have been reported. However, as I am writing this, it is still Sunday so they may report some in the next 2 days and that image will be changed if so.

The 2nd image you see, just below the map, is a 3-plot image that details roughly 85% of the micro-quake swarm. Based on the amplitudes on station YML, I believe the largest event of the swarm is anywhere between a M1.5 and a M1.9. The 3-plot image, just like all others, was generated by myself using the seismic program SWARM (and the program Paint).

Here are some details of this swarm:

Start of swarm: 15:24UTC
End of swarm: 15:37UTC
Total earthquake count (includes even the tiniest events): No more than 20 micro-quakes in 13 minutes.
Reported count: 0 (so far)
Largest reported earthquake of this swarm: None have been reported but may be in the coming days.
Largest amplitude: 29,900 (YML)
USGS EQ map for this swarm: CLICK HERE
Severity: Minor

Below I will show the helicorders of the 5 best stations near the swarm. Then I will show five 3-plot images detailing most of the swarm. Please remember, as always, to pay attention to all chart labels and any captions beneath any images.
Now in the helicorder charts I just posted you will notice a much larger earthquake about 6 hours or so after the swarm I detailed on this page. If you wish to see info and plots to this event, please CLICK HERE. Or you can just look at the most recent USGS event page and 3-plot image of the M3.1 at 8.2km in depth below. This is the end of the post but it seems more seismic events may be occurring. Stay tuned to this page and multiple other ones for the most up to date information. However remember it takes a little while for me to generate a post. The best way to stay ahead is to learn how to find, access, and analyze seismic data. Multiple pages in the "How to" dropdown menu can aid you in this.
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    About

    Please click a post title to view the data pertaining to that event!

    This is the seismic events page for Yellowstone National Park and Caldera, which resides in northwest Wyoming. Yellowstone is an absolutely massive caldera super-volcano. It sits at a shocking perimeter of 34 by 45 miles (55 by 72km) and that is only the caldera boundary! A caldera is created when land immediately erupts and collapses, while the magma chamber almost completely empties, creating a crater imprint called a caldera. Some calderas around the world are small in comparison (i.e. Kilauea) to other calderas formed by super-volcanic eruptions (i.e. Yellowstone in Wyoming or Long Valley in California).  Yellowstone is theorized to contain a magma chamber and a much deeper, much larger magma reservoir just beneath the chamber. This two-chamber system is also theorized to be caused by a "magma plume". Magma plumes are thought to draw their eruptive ability from deep within our planet, possibly from our lower mantle. That is why volcanoes caused by magma plumes are much more dangerous and far more unpredictable than their counterparts that are caused by normal tectonic forces. Yes, many volcanoes are caused by tectonic forces as one plate attempts to breach or dip beneath another one. A perfect example of this is the Cascade Range on the West Coast of the United States. Many volcanoes in the world are caused by this but some, the more unpredicatble ones, are caused by magma plumes.

    Remember to always pay attention to all chart labels! All images were generated by myself using the IRIS DMC seismic archive and the FREE seismic program S.W.A.R.M.

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  • Home
  • Yellowstone
    • Yellowstone Blog
    • 2008-2009 Yellowstone Lake Dike Intrusion
    • Rapid-Fire Swarms 2014-2018
    • Steamboat Geyser Eruptions >
      • Steamboat Eruptions 2020
      • Steamboat Eruptions 2019
      • Steamboat Eruptions 2018
  • Hawaii
    • Hawaii Blog
    • Hawaii Spasmodic Tremor
    • 2018 Kilauea-LERZ Eruptions
  • How To...
    • ...Retrieve Seismic Data
    • ...read webicorders/helicorders and seismic plots
    • ...Understand Spectrograms
    • ...USE SWARM Software
    • ...use jamaseis program
    • ...use waves program
    • ...understand UTC
    • ...Read/Create GPS Deformation Charts
    • ...use s.w.a.r.m. program (OLD)
  • Seismic Events
    • Event Examples
    • Exotic Events
    • Whale Calls
    • Cascade Volcanoes' Low Frequency Events
  • Seismo-Blog
  • Other Seismic Blogs
    • Quake Swarms
    • United States
    • East Coast, USA
    • World
  • Monthly Volcano Updates
  • Uplift/Subsidence Update
  • Videos/Multimedia
    • Newberry Videos
    • (OLD) 2019 Monthly/Yearly Updates
  • Seismic Software
    • jAmaSeis
    • SWARM
    • WAVES
  • Seismic Network Help
  • Links
  • About Me
  • Contact
  • Test Your Knowledge!
  • Lucas Andrew Ferraiuolo (Pro Pics)
  • Garbage Trucks?!