Mystery: Alabama earthquake swarm stuns residents and geologists alike

Alabama Quakes
June 2015 ALABAMAEarly one morning last November, Jim Sterling was frightened when the ground began shaking outside his 156-year-old antebellum home in Alabama. He grabbed his gun and ran outdoors, where he found horses galloping, cows mooing and dogs barking. It was an earthquake. “I heard a boom and felt the shaking,” Sterling said. “It really upset me.” Since that day, more than a dozen weak earthquakes have shaken western Alabama’s Greene County. Geologists are now working to find out what has caused this swarm over the last seven months, in an area of the South that’s used to large tornadoes but not light tremors. “It is interesting that recently there has been more activity there than in the last four decades,” said Sandy Ebersole, an earthquake expert with the Geological Survey of Alabama.
Records from the U.S. Geological Survey show the first of 14 earthquakes occurred on Nov. 20, when a magnitude 3.8 earthquake was recorded about 10 miles northwest of the community of Eutaw. The second occurred in mid-December, followed by another in January and three within a few hours of each other on Feb. 19. The tremors have continued ever since, with the most recent occurring June 6, when a magnitude 3.0 quake rattled the area. All the tremors have been weaker than the initial jolt in November, and Ebersole said some have been too slight for residents to detect.
Located about 35 miles from Tuscaloosa, the whole of Greene County has only about 8,700 residents, and the area where the quakes are occurring is sparsely populated. Farmlands and forests are dotted by hunting preserves and old homes left over from Alabama’s past as a cotton-producing, slave-holding state. Experts have installed a seismic monitor in a field to enable them to get better information about the quakes, none of which has caused major damage. Ebersole said researchers are trying to rule out potential causes such as blasting for quarries and sonic booms. They’ve even held meetings with rattled area residents.
Book Icon 3The earthquakes could be linked to underground cracks, or faults, found in the area in recent years at varying depths, Ebersole said. But just what has been causing the ground to shake is unclear. One potential source that regulators are discounting is hydraulic fracturing or “fracking,” a process for extracting underground oil or natural gas that has been blamed for earthquake swarms elsewhere, including Oklahoma. Wastewater is sometimes injected underground, a method the government has blamed for quakes. While Greene County is on the edge of Alabama’s primary region for oil and gas production, state geologist Nick Tew said no such production or disposal work is going on in the area where the earthquakes are occurring.  –Weather
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This entry was posted in Civilizations unraveling, Dormant fault activation, Earth Changes, Earth Watch, Earthquake Omens?, High-risk potential hazard zone, Human behavioral change after disaster, Potential Earthchange hotspot, Prophecies referenced, Seismic tremors, Signs of Magnetic Field weakening, Time - Event Acceleration. Bookmark the permalink.

6 Responses to Mystery: Alabama earthquake swarm stuns residents and geologists alike

  1. Dennis E. says:

    Just to say. No where in the usa is really safe from earthquake activity.
    Some say Fracking is aggravating fault lines that have been silent for years. I don’t know.
    But, with all the reports of earthquake activity through out the usa, the right earthquake, at the right spot, with right magnitude, harmonics or what ever, the entire county could suffer some form of land deformation. Some parts could sink. I change that thought. Major portions could sink with a huge loss of life.

    Just a thought

    Liked by 1 person

  2. STLloyd says:

    reblogged and commented:
    Earthquakes in divers (different, unusual) places, another sign of the times.

    Like

  3. Lulu says:

    One thing that always gets me is that if they are “experts”, their knowledge of geology and seismology should, I would imagine, be incredibly in-depth. If they are devoting their life to their science their knowledge should be immense. So there wouldn’t be any surprises for one (an expert) who has a major handle on what, where and when the Earth can move, shake, change and its dynamics.
    Nothing is surprising me about what the planet is doing at the moment (in the past or potentially what it could do in the future) and I am not an expert – just a keen amateur observer of earthquake activity and geology, and what influences its behavior.

    Liked by 1 person

  4. Yellow Bird says:

    off topic… but Portland appears to have had more Mystery Harmonics again. so far, no news outlets are commenting, but a number of folks are discussing this weekend’s episode(s) on this forum:
    https://sellwood-westmoreland.nextdoor.com/news_feed/?post=12495117

    Like

    • Yellow Bird says:

      also off topic… just read this report that the PacNW is losing another irreplaceable treasure of trees, fungal disease hitting our rare Pacific Great Madrones
      (madrones are like the aspen of the nw)
      http://registerguard.com/rg/news/local/33169970-75/blight-strikes-oregons-madrone-trees.html.csp

      Like

    • Yellow Bird says:

      ive discovered that only registered members can view the board in my link, so here’s a few of the commenters describing what was heard:
      “…First we said to each other, “there aren’t any Tibetan monasteries around here, are there?” …I think it sounds sort of mechanical, actually….”
      “… we were first thinking low-flying B-something bomber (not that we thought it was, but that’s what it sounded like), and then maybe some sort of weird guttural fog horn but the two tonight did sound a little more mechanical grinding/rumbling…”
      “… It does sound mechanical & the last one… shook our house….”
      “… incredibly loud low droning rumble…. hubby & i also heard the same deep grumble again, in about 3 shorter bursts, much later…”
      “…I heard that deep guttural noise before… last week, but can’t remember exactly when. It made me think of Tibetan monks too!”
      “…I have also heard this noise during the day on more than one occasion….”
      “…to me, it didn’t seem like it was coming from the sky – seemed ground level…”
      ‘…I heard it too, both times. It’s like a cross between a really loud tuba and giant metal machinery being dragged across the sidewalk. Very weird….”
      “…it felt like it was “all around us”. during the afternoon one we thought it was coming from the sky, but the 3 short ones that occurred after dark, we both thought, “oh its underground”
      “…Of a sonic magnitude that I can’t remember hearing. Sounded like a truck’s jake brake, if the truck was about 20 times larger than human scale. Release the Kraken!”
      “…I’ve never heard anything like this in my life. It was like a propeller plane the size of the Millennium Falcon (except with a little more resonance and a little more grinding) was about to come up over the trees. Just weird. Release the kraken, indeed…!”

      i notice in the Alabama EQ article above, someone talked about hearing a loud Boom.
      having experienced multiple 5+ earthquakes growing up in SoCa, i do not remember hearing loud earth sounds associated, only noise from buildings & belongings…
      i wonder if Portland is about due for some significant earth movement.

      Like

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