BEN FERRAIUOLO
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Hawaii Activity Blog

Oct. 16 - Oct. 31: Spasmodic Tremor Update

11/7/2019

2 Comments

 
Picture
Spasmodic tremor as seen on station HUAD on Oct. 22, 2019.
Spasmodic tremor continues to weaken and be replaced by high frequency earthquakes. As spasmodic tremor diminishes from its original stature, I believe high frequency earthquakes will continue to occur in swarms in the same location and depth as spasmodic tremor. This is the current pattern that is occurring and could change at any moment. Nevertheless, there were 4 spasmodic tremor events from Oct. 16 - Oct. 31. Please click the title of this post or "read more" to continue...
Mauna Loa is currently experiencing heightened volcanic unrest, including increasing seismicity and uplift. Therefore, the alert level has been raised to ADVISORY and the aviation color code has been raised to YELLOW. Please CLICK HERE to keep up to date with recent alert postings by USGS/HVO for Mauna Loa’s potential eruptive activity.
Picture
The current water lake within Halema'uma'u continues to grow and is now the size of a United States football stadium.
usgs eq map of hawaii oct. 16 - oct. 31, 2019
hawaii seismic station map
As seen in the picture above, a pond of water has been constantly growing at the bottom of Halema’uma’u crater inside of Kilauea Caldera. It was originally thought to be rainwater, but USGS/HVO now believes it is highly likely this is groundwater. This could spell trouble for Kilauea in the near future. To keep an eye on this growing pond, keep checking the Volcano Watch articles put out by HVO which can be found HERE. Also, you can keep an eye on it yourself if you monitor the webcam at Kilauea which can be found HERE.

If you wish to understand what volcanic spasmodic tremor is, and how it relates to ongoing volcanic unrest in Hawaii, please CLICK HERE.


Strong spasmodic tremor in October continues to elude us. There were only 4 spasmodic tremor events from Oct. 16 - Oct. 31, 2019. One event was somewhat strong for spasmodic tremor, but still does not come close to the ones we have seen since Jan. 23, 2019.

Regardless, I still like to keep a "log" of sorts regarding spasmodic tremor since these events do fascinate me. Below I will show the seismogram and spectrogram of each spasmodic tremor within the stated date range above. Each long image will contain those plots from 3 seismic stations around the Big Island.

After the plots for each event are shown, I will include seismic audio as usual. Seismic audio is retrieved using the IRIS Time Series resource and each audio clip's speed is highly increased.

Event 1

Spasmodic tremor occurred on October 16, 2019 at 10:22UTC. It was weak and lasted approximately 24 minutes.
Picture

Event 2

Spasmodic tremor occurred on October 22, 2019 at 15:39UTC. It was the strongest of October and lasted approximately 37 minutes. Note there were no observable earthquakes during this event except near the end. This event was basically all tremor with little to no earthquakes.
Picture

Event 3

Spasmodic tremor occurred on October 23, 2019 at 05:16UTC. It was very weak and lasted approximately 23 minutes.
Picture

Event 4

Spasmodic tremor occurred on October 24, 2019 at 13:15UTC. It was weak and lasted approximately 38 minutes.
Picture
2 Comments
Laura
11/18/2019 09:44:37 pm

Hello Ben-
I've been out of the country (and without internet) for the past few weeks-so thought I would check up on my favorite website, YT creator, and earthquake type! Appears the lovely USGS isn't really posting as many quakes as are really hitting the area (what else is new), but what caught my eye is the frequent (?almost continuous) swarming in the Pahala (sp?) region of the big island...lava seriously on the move!!! :)
Hope you and yours are doing well and are adjustting to the addition of Lucas to your clan! (Hope I got his name right!!) Having had five, I recall the transition from two little blessings to three, the most challenging of all! They now have you outnumbered! hehehe.
Impressed that you are still posting, in addition to the behind-the-scene challenges facing you! Many Kudos!
Thank you, a million times over, and many more prayerrs and blessings coming at you, and yours than that!!
Stay sane, try to get some sleep, and know you (and the family) are being lifted in prayer, & God's love and light, always-whether or not it feels like it!
Best ever,
Laura

Reply
Ben
11/21/2019 08:29:44 pm

Hey there Laura! Thank you for the kind words. Yes, Pahala has been swarming like crazy lately with these events occurring basically in the same spot as the spasmodic tremor.

And yes, you got his name right. And 5 kids?! Woah, I can barely handle 3! Haha.

Thank you much. Many blessings to you as well. God bless!

-Ben

Reply



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    About

    This blog is specifically for activity that occurs in Hawaii. In light of 2018's eruptions on the Big Island, I felt it necessary to have a section entirely devoted to events in Hawaii. I now mostly use this blog to update people on volcanic spasmodic tremor which occurs deep within the mantle plume conduit(s) under Pahala, HI. Don't know what spasmodic tremor is? Don't fret! Simply go to the Hawaii menu and click the page about Hawaii Spasmodic Tremor.

    If there are too many posts, don't forget about the archives below!

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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?!