Author Topic: yellowstone activity  (Read 1101 times)

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Offline zeker

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yellowstone activity
« on: June 04, 2014, 04:29:57 PM »
 
 
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Event Report
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  Wednesday, 4th June 2014 :: 20:28:37 UTC [/t][/t][/t]
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Earthquake in USA on Wednesday, 04 June, 2014 at 10:31 (10:31 AM) UTC.
 
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Seismographs have picked up a swarm of earthquakes in the northwestern corner of Yellowstone National Park, including dozens early Tuesday. The University of Utah Seismograph Station reported five small earthquakes including those with magnitudes of 3.4, 2.7 and 3.2 in a 20-minute period starting at 3:33 a.m. in an area 16 to 18 miles south of Gardiner. Earthquake information specialist Paul Roberson says there were another 20 to 30 small quakes Tuesday morning that hadn't yet been posted on the university's website. He called it a fairly normal swarm for Yellowstone. He didn't expect there to be any damage. Seismographs recorded 31 quakes in the same area south of Gardiner on Saturday, while another 23 were reported last Wednesday and Thursday in an area between 18 and 19 miles east-southeast of West Yellowstone. [/t][/t]
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Offline zeker

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Re: graph of activity over the last several yrs
« Reply #1 on: June 04, 2014, 04:35:23 PM »
FAQ about Recent News Reports - Earthquake, Ground Uplift, Animal Movement, and Helium
April 02, 2014
Recent weeks have seen a flurry of news, real and imagined, about the Yellowstone volcanic system. Below is a brief FAQ about several topics that have appeared in recent news reports.

Has earthquake activity at Yellowstone increased dramatically over the last month?
With the latest swarms, earthquakes are elevated, but are not unusual for Yellowstone. Below is a bar chart that shows the last 20 years of earthquakes in the north-central part of the park. The previous uptick in earthquakes in this part of the park was during the previous period of uplift in this region.
  Cumulative earthquake counts (provided by the University of Utah) located in region north of the Caldera, centered near Norris Geyser Basin, Yellowstone National Park, from April 1994 to April 2014.
 (Click image to view full size.) Cumulative earthquake counts (provided by the University of Utah) located in region north of the Caldera, centered near Norris Geyser Basin, Yellowstone National Park, from April 1994 to April 2014.
Is the recent episode of ground deformation worrisome?
No. Current rates of ground deformation are well within historical norms. Please see our February 18, 2014 Information Statement, for more information about ground deformation at Yellowstone.

Are animals leaving Yellowstone National Park?
According to the park, any animal migrations are typical for this time of year. Most of the recent videos on the internet that show running bison were filmed weeks (at least) before Sunday's earthquake. Park spokesman Al Nash discusses this and other topics in a YouTube video.

Do helium emissions at Yellowstone signal an impending eruption?
No. YVO Scientist-in-Charge Jacob Lowenstern and colleagues recently published research on helium (He) emissions at Yellowstone in the journal Nature. The new research looked at apparent changes in the helium output of the Yellowstone area during its two-million-year volcanic history, compared with the previous two billion years of comparative stability. The research has nothing to do with current activity at Yellowstone, and has no implications about volcanic hazards. For a humorous and informative take on the new research, read the Los Angeles Times article, "It's up, up and away for ancient trapped helium at Yellowstone," or watch the Slate.com video "Ancient Helium Is Escaping by the Ton from Yellowstone."

For additional information, see the April 1, 2014 Monthly Activity Update.

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Quick Facts

Location: Wyoming and Montana
Latitude: 44.615° N
Longitude: 110.6° W
Elevation: 2,805 (m) 9,203 (f)
Volcano type: Caldera
Composition: basalt to rhyolite
Most recent eruption: 70,000 years ago—lava, current—hydrothermal explosions
of all the things I,ve lost.. I miss my mind, the most