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Hawaii Activity Blog

July 1 - Spasmodic Tremor Again

7/2/2019

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Picture
On July 1, 2019, three separate volcanic spasmodic tremor events were detected at the usual depth and location as past spasmodic tremor. I have talked about these many times in previous videos and blog posts. These are occurring because of mass magma transport along the mantle plume conduit. It has been less than a week since the last spasmodic tremor "swarm". Uplift also continues at the Mauna Loa summit, the Kilauea summit, and along the Kilauea East Rift Zone. There is a great deal of magma that is feeding the many sub-surface magma reservoirs on the Big Island of Hawaii.

As usual, please click the title of this post or "read more" to continue...

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Reported epicenters of earthquakes that occurred as part of the July 1, 2019 sequence of spasmodic tremor.
Picture
Locations of seismic stations I will use for the following plots.
VOLCANO ALERT: Mauna Loa, the largest active volcano on our planet, which resides in Hawaii, has been showing signs of increased volcanic unrest. 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 on the alerts posted by the HVO regarding Mauna Loa's current level of volcanic unrest.
USGS EQ Map
Hawaii Station Locations
First off, the USGS EQ map button above will bring you to reported seismicity from USGS for July 1, 2019. The station locations button above will also show you all active seismic stations on the Big Island of Hawaii.

July 1, 2019 saw three spasmodic tremor events, still occurring because of magmatic activity within the deep mantle plume under the Big Island of Hawaii. The 2nd spasmodic tremor of this day was one of the largest and longest spasmodic tremor events as of this year, 2019. Uplift continues for the Mauna Loa summit, which is experiencing heightened unrest, the Kilauea summit, and the Kilauea East Rift Zone.

As usual, I will show seismic plots pertaining to these events from the 4 stations labeled on the map above. I will also include seismic audio for all 3 spasmodic tremor events for this day. In regards to seismic audio, please use your headphones to hear it best. However, please be wary of the volume just in case! Seismic audio is obtained from IRIS and will always be sped up quite a bit to make the frequencies audible to the human ear. Enjoy!

July 1, 2019 Helicorders

Event #1

Event #1 occurred at 4:36UTC and lasted approximately 24 minutes.

Event #2

Event #2 was the largest of today and is one of the largest and longest spasmodic tremor episodes of this year. This spasmodic tremor event occurred at 20:13UTC and lasted an astonishing 1 hour and 11 minutes!

Event #3

Event #3 was the last event of this day. It was quite strong as well, however it was far more emergent and "tremor-like" than many recent spasmodic tremor episodes. This event started at about 21:41UTC and lasted approximately 46 minutes.
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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?!