Maverick
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I asked my Wife to share her daily from YVO since there are a lot of misinformation. Pager has always been Green, if that changes I will post here.
ELLOWSTONE VOLCANO OBSERVATORY MONTHLY UPDATE
U.S. Geological Survey
Monday, October 1, 2018, 1:54 PM MDT (Monday, October 1, 2018, 19:54 UTC)
YELLOWSTONE VOLCANO (VNUM #325010)
44°25'48" N 110°40'12" W, Summit Elevation 9203 ft (2805 m)
Current Volcano Alert Level: NORMAL
Current Aviation Color Code: GREEN
Recent work and news
September was a month of hydrothermal activity at Yellowstone. Steamboat geyser experienced water eruptions on September 1, 7, 12, 17, 24, and 30. This brings the total number of Steamboat eruptions in 2018 to 21. In addition, a rare eruption of Ear Spring in the Upper Geyser Basin, not far from Old Faithful, occurred on September 15 and was accompanied by changes to springs and geysers in the Geyser Hill area. A new thermal feature also formed at that time nearby, spouting scalding water that necessitated the closure of the boardwalk through the area. Scientists from Yellowstone National Park deployed temperature sensors and cameras in the area to monitor the activity, and the University of Utah deployed 29 seismic sensors around the region to measure whether or not significant changes in the subsurface plumbing system occurred relative to data collected from the area in November 2017.
Seismicity
During September 2018, the University of Utah Seismograph Stations, responsible for the operation and analysis of the Yellowstone Seismic Network, located 57 earthquakes in the Yellowstone National Park region. The largest event was a micro earthquake of magnitude 2.9 located about 16 miles east-southeast of Mammoth, WY, on September 11 at 07:30 AM MDT.
No swarm activity occurred during the month of September.
Yellowstone earthquake activity remains at background levels.
Ground deformation
Surface deformation recorded by GPS stations in Yellowstone showed little change over the month of September, reflecting the low rates of ground motion in the region. Overall trends since 2015 are of uplift near the Norris Geyser Basin and subsidence of the caldera, all at rates of a few centimeters per year.
An example of GPS data can be found at http://www.unavco.org/instrumentation/networks/status/pbo/data/NRWY (click on Static Plots / Cleaned)
The Yellowstone Volcano Observatory (YVO) provides long-term monitoring of volcanic and earthquake activity in the Yellowstone National Park region. Yellowstone is the site of the largest and most diverse collection of natural thermal features in the world and the first National Park. YVO is one of the five USGS Volcano Observatories that monitor volcanoes within the United States for science and public safety.
YVO Member agencies: USGS, Yellowstone National Park, University of Utah, University of Wyoming, UNAVCO, Inc., Wyoming State Geological Survey, Montana Bureau of Mines and Geology, Idaho Geological Survey
CONTACT INFORMATION:
Michael Poland, Scientist-in-Charge
[email protected]
ELLOWSTONE VOLCANO OBSERVATORY MONTHLY UPDATE
U.S. Geological Survey
Monday, October 1, 2018, 1:54 PM MDT (Monday, October 1, 2018, 19:54 UTC)
YELLOWSTONE VOLCANO (VNUM #325010)
44°25'48" N 110°40'12" W, Summit Elevation 9203 ft (2805 m)
Current Volcano Alert Level: NORMAL
Current Aviation Color Code: GREEN
Recent work and news
September was a month of hydrothermal activity at Yellowstone. Steamboat geyser experienced water eruptions on September 1, 7, 12, 17, 24, and 30. This brings the total number of Steamboat eruptions in 2018 to 21. In addition, a rare eruption of Ear Spring in the Upper Geyser Basin, not far from Old Faithful, occurred on September 15 and was accompanied by changes to springs and geysers in the Geyser Hill area. A new thermal feature also formed at that time nearby, spouting scalding water that necessitated the closure of the boardwalk through the area. Scientists from Yellowstone National Park deployed temperature sensors and cameras in the area to monitor the activity, and the University of Utah deployed 29 seismic sensors around the region to measure whether or not significant changes in the subsurface plumbing system occurred relative to data collected from the area in November 2017.
Seismicity
During September 2018, the University of Utah Seismograph Stations, responsible for the operation and analysis of the Yellowstone Seismic Network, located 57 earthquakes in the Yellowstone National Park region. The largest event was a micro earthquake of magnitude 2.9 located about 16 miles east-southeast of Mammoth, WY, on September 11 at 07:30 AM MDT.
No swarm activity occurred during the month of September.
Yellowstone earthquake activity remains at background levels.
Ground deformation
Surface deformation recorded by GPS stations in Yellowstone showed little change over the month of September, reflecting the low rates of ground motion in the region. Overall trends since 2015 are of uplift near the Norris Geyser Basin and subsidence of the caldera, all at rates of a few centimeters per year.
An example of GPS data can be found at http://www.unavco.org/instrumentation/networks/status/pbo/data/NRWY (click on Static Plots / Cleaned)
The Yellowstone Volcano Observatory (YVO) provides long-term monitoring of volcanic and earthquake activity in the Yellowstone National Park region. Yellowstone is the site of the largest and most diverse collection of natural thermal features in the world and the first National Park. YVO is one of the five USGS Volcano Observatories that monitor volcanoes within the United States for science and public safety.
YVO Member agencies: USGS, Yellowstone National Park, University of Utah, University of Wyoming, UNAVCO, Inc., Wyoming State Geological Survey, Montana Bureau of Mines and Geology, Idaho Geological Survey
CONTACT INFORMATION:
Michael Poland, Scientist-in-Charge
[email protected]
