Weston Thelen
@thelenwes
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Father, runner, volcano seismologist
Vancouver, WA
Joined March 2009
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.
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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.
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Nice day up on Rainier deploying infrasound. Lots of snow at the site. Be back in a month!
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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.
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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 👇👇👇
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If you want to know what my garage and bedroom look like, read on.
Working in Clark County: Weston ‘Wes’ Thelen, seismologist at USGS -
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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.
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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. https://t.co/uYQvLrRBq4
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Cascade Range volcanoes at normal background levels of activity this week, https://t.co/DSF2QB5ekz.
#CVO field team skis out to monitoring station HIYU, NW of #MountHood (6km), to troubleshoot a communications issue and conduct station maintenance. #VolcanoUpdate
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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.
sciencenews.org
Small, periodic earthquakes have happened every seven to 12 minutes for decades, but aren’t reason for alarm, a new study finds.
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Honestly the strangest swarm of earthquakes I've ever had a chance to study: https://t.co/clJ8Hkcm76
https://t.co/YUnw6P2Qto
sciencenews.org
Small, periodic earthquakes have happened every seven to 12 minutes for decades, but aren’t reason for alarm, a new study finds.
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@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 :-)
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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. https://t.co/6TvQTv0qWu
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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
A thicket of red tape and regulations have made it difficult for volcanologists to build monitoring stations along Mount Hood and other active volcanoes.
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An update on this rock avalanche that was well-recorded by seismometers across southwest British Columbia...
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:- https://t.co/qqtW1haszn
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