Weston Thelen (@thelenwes) header
Weston Thelen (@thelenwes) profile picture

Weston Thelen

@thelenwes

Father, runner, volcano seismologist

 Vancouver, WA
Joined March 2009
  • Tweets89
  • Following246
  • Followers121
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Photo by Weston Thelen (@thelenwes)Photo by Weston Thelen (@thelenwes)Photo by Weston Thelen (@thelenwes)Photo by Weston Thelen (@thelenwes)Photo by Weston Thelen (@thelenwes)Photo by Weston Thelen (@thelenwes)Photo by Weston Thelen (@thelenwes)Photo by Weston Thelen (@thelenwes)Photo by Weston Thelen (@thelenwes)Photo by Weston Thelen (@thelenwes)
Got lucky with a tight weather window yesterday at Mount St Helens to collect some temporary infrasound sensors. Today there a foot of snow in this spot.
Image from Weston Thelen (@thelenwes)
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Great day of fieldwork at Mount St. Helens putting out sensors to track early season debris flows. Love this time of year on the volcano.
Image from Weston Thelen (@thelenwes)
Image from Weston Thelen (@thelenwes)
Image from Weston Thelen (@thelenwes)
Image from Weston Thelen (@thelenwes)
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Nice day up on Rainier deploying infrasound. Lots of snow at the site. Be back in a month!
Image from Weston Thelen (@thelenwes)
Image from Weston Thelen (@thelenwes)
Image from Weston Thelen (@thelenwes)
Image from Weston Thelen (@thelenwes)
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Finally got the last two infrasound sensors that were buried this winter from Mount Hood Meadows. One was still in the tree we strapped it in, one was...not. At least they set it down nicely.
Image from Weston Thelen (@thelenwes)
Image from Weston Thelen (@thelenwes)
Image from Weston Thelen (@thelenwes)
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What are the odds of a clear enough sky to see the lunar eclipse early tomorrow morning in the Portland area? #askingForMyKids @NWSPortland
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What volcano in southern oregon is still dormant? This one 👇👇👇
Image from Weston Thelen (@thelenwes)
Image from Weston Thelen (@thelenwes)
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If you want to know what my garage and bedroom look like, read on.
The Columbian (@thecolumbian) profile pictureThe Columbian@thecolumbian20 Mar 2021
Working in Clark County: Weston ‘Wes’ Thelen, seismologist at USGS - columbian.com/news/2021/mar/…

Working in Clark County: Weston ‘Wes’ Thelen, seismologist at USGS

It’s safe to say that the list of jobs out there that might require hiking around a volcano is a short one.

columbian.com
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Infrasound recordings of the @SpaceX rocket booster breaking up from arrays on Adams, Mount St. Helens and Rainier. Also recorded on seismometers but only as air-coupled ground waves.
Image from Weston Thelen (@thelenwes)
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Sorry, ground coupled air waves. Don’t tweet before bed.
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Great day for a card swap at Mount Hood!
Image from Weston Thelen (@thelenwes)
Image from Weston Thelen (@thelenwes)
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A tectonic earthquake swarm is ongoing at Mount Hood, no sign of changes in volcanic activity. >100 earthquakes south of the summit in an location where swarms commonly occur. Maximum magnitude M2.7 & depth ~5km (3mi). @PNSN1 & #CVO monitoring closely. ow.ly/25Sq50DaWAz
Image from USGS Volcanoes🌋 (@USGSVolcanoes)
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Cascade Range volcanoes at normal background levels of activity this week, ow.ly/p83F50CPQTg. #CVO field team skis out to monitoring station HIYU, NW of #MountHood (6km), to troubleshoot a communications issue and conduct station maintenance. #VolcanoUpdate
Image from USGS Volcanoes🌋 (@USGSVolcanoes)
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"One of the strangest #seismic signals we've ever seen" has been occurring at #MaunaKea #Volcano in #Hawaii for decades. USGS scientists think it has everything to do with #magma but nothing to do with the volcano building toward eruption. ow.ly/34v550zHGBi

Long-dormant volcano Mauna Kea has been quietly grumbling for decades

Small, periodic earthquakes have happened every seven to 12 minutes for decades, but aren’t reason for alarm, a new study finds.

sciencenews.org
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Honestly the strangest swarm of earthquakes I've ever had a chance to study: sciencenews.org/article/maun… science.sciencemag.org/conte…

Long-dormant volcano Mauna Kea has been quietly grumbling for decades

Small, periodic earthquakes have happened every seven to 12 minutes for decades, but aren’t reason for alarm, a new study finds.

sciencenews.org
Replying to @EGU_Seismo @LastQuake @EuroGeosciences @laviedej
#shareEGU20_ThatsMySignal I'd like to share seismic signals and obtained tilt signals of a #debrisflow at #Illgraben, Switzerland @WSL_research. And I nominate @stefdonner @InSeismoland @seismotologist to share their signals :-)
Image from michaela.wenner (@MichaelaWenner)
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During April 12-13, Mount Hood's monitoring network detected a burst of ~100 small earthquakes at depths 1.8-4.3 mi below sea level. EQs are associated with regional tectonic faulting & not volcanic activity. Mount Hood at background levels of activity. ow.ly/mTza50ze6vK
Image from USGS Volcanoes🌋 (@USGSVolcanoes)
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#CascadesVolcanoObservatory Scientist-in-Charge Seth Moran was interviewed for this @nytimes articles that discusses the challenges we face in monitoring high-threat #volcanoes. nytimes.com/2019/09/09/scien…
We’re Barely Listening to the U.S.’s Most Dangerous Volcanoes (Published 2019)

We’re Barely Listening to the U.S.’s Most Dangerous Volcanoes (Published 2019)

A thicket of red tape and regulations have made it difficult for volcanologists to build monitoring stations along Mount Hood and other active volcanoes.

nytimes.com
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An update on this rock avalanche that was well-recorded by seismometers across southwest British Columbia...
Dave Petley (@davepetley) profile pictureDave Petley@davepetley15 May 2019
On Monday morning at 07:41 am local time, a significant rock avalanche occurred at Joffre Peak in British Columbia in Canada, running out over a distance of about 4.5 km:- blogs.agu.org/landslideblog/…
Image from Dave Petley (@davepetley)
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Weston Thelen retweeted
Emily Pritt (@Emily_Pritt) profile picture
Emily Pritt@Emily_Pritt26 Aug 2018
My #hoodtocoast2018 team was 12th out of 1032 teams & the top women’s team overall. At the Awards Ceremony, the top walking, HS and men’s teams were awarded trophies. When we asked why women’s weren’t announced we were told by RD Bob Foote, “Go talk to someone who cares” WOW
Image from Emily Pritt (@Emily_Pritt)
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Glacier Peak is considered a "very high threat" volcano by the U.S. Geological Survey. It sits less than 70 miles northeast of Seattle, and it needs more monitoring stations. st.news/2vVeFDu
Image from The Seattle Times (@seattletimes)
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