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Yellowstone Caldera, WY

March 11, 2019 - Minor rapid-fire swarm at Yellowstone Lake

3/12/2019

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As usual, please click the title of this post or "read more" to continue...
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March 11-12, 2019 Yellowstone saw a small increase in seismicity in 3 locations: just south of Purple Mountain, far south of Yellowstone Lake, and the northern tip of Yellowstone Lake. If you wish to see the info and data pertaining to the first two locations, please CLICK HERE to visit my post about it.

Again, the third location of the increase in seismicity is circled in the image above. The 6 stations I used for cross correlation are also labeled, with B206 and YML beyond the map frame. This swarm was one of the smallest rapid fire swarms I have ever seen at Yellowstone. Not only were the magnitudes very small, but the quantity was quite low as well. Also, according the the waveform data, it appears this minor swarm was extremely shallow. I am now guessing it struck within that circled area above at about 1km to 3km in depth. Although you cannot notice on the helicorders shown at the end of this post, these events did appear on 5 out of the 6 stations labeled above. Here are two examples using the program WAVES. The diagonal lines show where the earthquakes appeared within each seismogram from each seismometer's data stream:
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So many of the micro-quakes within this minuscule swarm did appear on 5 out of the 6 surrounding stations. So we know these earthquakes occurred, but B208 was basically the only station to detect clear P and S wave arrivals. That means it is highly unlikely these earthquakes will be reported, basically because the University of Utah does not like to report earthquakes without knowing the exact epicenter (*shrug*). Below is some information regarding this burst in seismicity. It will be followed by a slideshow of a few 3-plot images detailing this event and then a slideshow showing the helicorders from the 6 stations labeled above.

March 11, 2019:
Start of swarm: 10:29UTC
End of swarm: 10:32UTC

Note: The time period above is ONLY for the main burst of seismicity. Very tiny micro-quakes popped off many times throughout the rest of the day.

Total earthquake count (includes even the tiniest events): Approximately 13 micro-quakes at the maximum for the main burst, with likely another 13 to 15 throughout the day.

Reported count: 0
Magnitudes/Depths of reported events for this swarm from newest to oldest: None reported
Largest reported earthquake of this swarm: None reported
Largest amplitude: 4,400 (B208)

USGS EQ map for this swarm: None were reported
Severity: Extremely minor
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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?!