| Earthwatchers
|
[
Earthwatchers ] [ Main Menu ] |
|
|
|
98745 |
|
|
Date: December 26, 2024 at 11:58:29
From: pamela, [DNS_Address]
Subject: FYI for folks who are watching earthquakes in Oregon. |
|
|
An FYI for folks who are watching earthquakes in
Oregon. All of this is from the USGS CASCADES VOLCANO
OBSERVATORY INFORMATION STATEMENT (the all caps is
them, not me!)
Newberry volcano is currently at normal/background
levels of activity. Beginning on December 22, 2024, and
continuing intermittently for several weeks to months,
private exploration company Mazama Energy will conduct
geothermal exploration work near Newberry volcano. As
their geothermal work proceeds, many small magnitude,
non-volcanic earthquakes will occur, which will be
detected by the Newberry seismic network. Any increased
rates of seismicity will be closely monitored by the
U.S. Geological Survey Cascades Volcano Observatory
(CVO) and its monitoring partner, the Pacific Northwest
Seismic Network (PNSN). The project should not result
in any changes to Newberry’s state of activity or
potential volcanic hazards.
Actions by Mazama Energy in late November and early
December 2024 generated minor seismic activity that was
detected by the Newberry seismic network. During prior
geothermal exploration activities at Newberry volcano
in 2012 and 2014, hundreds of small earthquakes of
magnitude M2.5 or less occurred while a company
conducted geothermal work. CVO and PNSN monitoring
networks are operating normally and seismologists will
be able to differentiate volcanic earthquakes from
those caused by geothermal exploration activity.
Additional information will be issued as warranted.
GEOLOGIC CONTEXT
Newberry volcano is a broad shield-shaped, composite
volcano in Central Oregon covering an area the size of
Rhode Island. The central caldera is located
approximately 25 miles (40 km) south of Bend, Oregon.
Notable features include Paulina Lake, East Lake, Big
Obsidian Flow, and the volcano’s highest point, Paulina
Peak, 7,986 ft (2,434 m) in elevation on the south
caldera rim. Throughout its 500,000-year eruptive
history, Newberry has produced ash and tephra,
pyroclastic flows, and lava flows that range in
composition from basalt to rhyolite. Newberry last
erupted about 1,300 years ago, and present-day hot
springs, background levels of seismicity, and
geologically young lava flows indicate that it is still
an active volcano.
More information on Newberry volcano can be found here:
https://pubs.usgs.gov/fs/2011/3145/fs2011-3145.pdf
https://www.usgs.gov/volcanoes/newberry/
https://www.usgs.gov/observatories/hvo/news/volcano-
watch-newberry-volcano-impressive-unappreciated-giant
usgs.gov
Volcano Watch — Newberry Volcano is an impressive but
unappreciated giant | U.S. Geological Survey
comments and questions by John Vidal
John Vidale
Admin
Group expert in Earth Science
Is there a traffic light 🚦 system to slow or cease
operations if earthquakes above a preset magnitude
strike the volcano?
1w
Reply
Share
Edited
Brian Terbush
Group expert
Top contributor
John Vidale Good question! Would have to ask the
company about it, and if that's in their plan for the
exploration. Hopefully they are working closely with
USGS CVO/PNSN and coordinating on information about
that.
1w
Reply
Share
John Vidale
Admin
Group expert in Earth Science
I remember a discussion about such a system back in the
previous stimulation about whose magnitude was
authoritative, as there were considerable financial
repercussions possible.
1w
Reply
Share
John Vidale
Admin
Group expert in Earth Science
Vague recollection that they wanted to compute the
magnitude themselves.
1w
Reply
Share
|
|
|
|
|
Responses:
[98749] [98750] [98747] [98748] |
|
98749 |
|
|
Date: December 28, 2024 at 14:04:38
From: pamela, [DNS_Address]
Subject: Re: FYI for folks who are watching earthquakes in Oregon. |
URL: https://www.usgs.gov/observatories/cvo/news/earthquake-monitoring-newberry-volcano-december-18-2024 |
|
heres the link at top for the reference to this
exploration/experiment at or near Newberry volcano off
Oregon cst
|
|
|
|
|
Responses:
[98750] |
|
98750 |
|
|
Date: December 28, 2024 at 14:47:29
From: pamela, [DNS_Address]
Subject: Re: FYI for folks who are watching earthquakes in Oregon. |
URL: https://en.wikipedia.org/wiki/Newberry_Volcano |
|
sorry my bad- Newberry volcano is NOT off Oregon cst--
Geography
Map of Oregon indicating Portland with a circle in the
northwest, and major volcanoes indicated as triangles.
Newberry is near the center of the state, under Three
Sisters and above Crater Lake (Mount Mazama)
Newberry Volcano's location in Oregon relative to other
major volcanoes
The center of Newberry Volcano lies 20 miles (32 km) to
the south of the city of Bend,[3] at the intersection
of Deschutes, Klamath and Lake counties in Oregon,[4]
where it is one of the most accessible volcanoes in the
state.[5] It is the largest volcano in the Cascade
Volcanic Arc at 620 square miles (1,600 km2),[6] and
has roughly the same area as the state of Rhode
Island[4] at 1,200 square miles (3,100 km2)[7] if its
lava flows are included.[8] Newberry lies 37 miles (60
km) east[9] of the major crest of the Cascade Range in
the High Lava Plains region,[7] rising 3,500 feet
(1,100 m) above its surroundings.[3] From north to
south, the volcano runs for a length of 75 miles (121
km), with a width of 27 miles (43 km)[7] and a total
volume of about 140 cubic miles (600 km3).[9] Because
of its enormous size and topographic prominence, it is
often confused for an entire mountain range.[3]
|
|
|
|
|
Responses:
None |
|
98747 |
|
|
Date: December 26, 2024 at 23:58:54
From: Cinnamon in Oregon, [DNS_Address]
Subject: Re: FYI for folks who are watching earthquakes in Oregon. |
|
|
|
Thanks, Pamela. Will keep that in mind.
|
|
|
|
|
Responses:
[98748] |
|
98748 |
|
|
Date: December 27, 2024 at 10:46:46
From: pamela, [DNS_Address]
Subject: Re: FYI for folks who are watching earthquakes in Oregon. |
|
|
It is info I passed along from the site John Vidal
passed along.
|
|
|
|
|
Responses:
None |
|
[
Earthwatchers ] [ Main Menu ] |