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Seismo-Blog

Stromboli - Lava explosions cause strong vibrations detectable on seismic stations

7/2/2019

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Hey guys. This is a very quick post which I originally made for my grandmother. My grandma loves all things about the Stromboli volcano in Italy. Eruptions are becoming larger and more frequent so I thought she would like a quick look at the type of activity I monitor and the way I monitor it.

In this post I have a video for you to watch. It shows 3 select Stromboli eruptions from Skyline Webcams. I sat down and recorded their live stream with a pen and paper on hand. I then recorded 3 select eruptions and the times they occurred. Then, I went to the closest seismic station I could find to see if I could correlate each eruption to a vibration detected on that same seismograph (seismometer). What I found was pretty cool! Each lava explosion generates some good sized seismic signals.
Picture
Above is a satellite image showing the location of seismic station ISTR in relation to the Stromboli Volcano. Seismic stations are used to detect ground vibrations and can detect anything from strong storms, volcanic tremor, earthquakes, and even footsteps next to the station. In this day and age volcanic eruptions can almost be forecast, as long as precursory seismic events are detected. Seismic stations can detect vibrations up to 50,000 times smaller than what humans can feel.

Please watch the video below first. I have 3 eruptions selected and will label them in the video so you can compare them to the seismic plots beneath. These lava eruptions are strong enough to be detected on nearby seismic stations. Here is the video:

Below are seismic plots of all 3 of the eruptions you just witnessed. Each image contains two seismic plots: a seismogram plot and a spectrogram plot. The seismogram plot, which is the top "blue" plot, displays ground vibrations and the strength of those vibrations. The spectrogram plot, which is the bottom "colorful" plot, displays the frequency of the ground vibrations and their relative strength as well.

First Eruption

Picture

Second Eruption

Picture

Third Eruption

This image actually shows two eruptions. Can you see both of them? Sadly, I stopped recording the video above right when the other eruption happened. Oh well! The third eruption shown in the video is the first increase in energy shown in the image below:
Picture
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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?!