BEN FERRAIUOLO
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Seismo-Blog

November 8 ,2018 Yellowstone Seismicity

11/8/2018

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Starting at about 1:43UTC November 8, 2018 (6:43pm Mountain Time November 7, 2018) there was another increase in seismicity near the Maple Creek/Hebgen Lake area. It was a swarm of about 10 earthquakes or so and many were very small. The University of Utah and USGS did report 6 of the earthquakes so they were able to locate the majority of them. These earthquakes occurred between 9.8km and 12km in depth. This blog post will simply show plots and helicorders of this small swarm. PLEASE CLICK THE TITLE OF THIS POST OR "READ MORE" TO CONTINUE...

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As you can see in the image above, there were 6 earthquakes reported for this swarm with 4 other earthquakes occurring far to the north and to the southwest. Below are the helicorders for the 3 closest stations to this swarm: YMC, YHH, and YGC.
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Below are the seismogram/spectrogram/spectral plots of most of the earthquakes to occur for this swarm. Remember to ALWAYS read chart labels FIRST. That goes for every single type of chart or graph you ever see in life, not just for seismology. Also pay attention to any captions beneath any images. All plots below are generated by myself using the program SWARM and data from seismic station YMC, unless otherwise specified.
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This was the first earthquake reported for this swarm (so far). It was reportedly a magnitude 0.2 at 11.3km in depth. The amplitude count is consistent with a magnitude of this size. Dominant frequencies below 10HZ with the strongest frequency being about 4.9HZ.
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This is the second reported earthquake and was reportedly a magnitude -0.0 at 9.8km in depth. I believe it is more like a 0.1 but it's close enough. Dominant frequencies are below 12HZ with the strongest spike once again being around 4.9HZ.
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This was the next reported earthquake and was a magnitude 1.6 at 10.8km in depth. You can also see an unreported, negative magnitude earthquake at the end of the plots. Once again, dominant frequencies remain below 12HZ with the strongest frequency being about 4.9HZ. These earthquakes in this swarm are very identical to each other.
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This earthquake was reported to be a magnitude 1.3 at 12.0km in depth. Notice dominant frequencies remain below 12HZ with, once again, the strongest frequency being about 4.9HZ.
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This earthquake was reported to be a magnitude 0.9 at 11.0km in depth. Notice the same pattern continues with dominant frequencies below 12HZ with the strongest frequency being about 4.9HZ.
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This was the last reported earthquake for this swarm (at least right now). It was a magnitude 1.3 at 11.0km in depth. Once again we see dominant frequencies below 12HZ with the strongest frequency being about 4.9HZ. These earthquakes really seem identical in almost every way!
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    Ben Ferraiuolo is a fast learner and someone who will always stand for the truth. Visit "About Me" for more!

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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?!