Anna Perttu
@infrasound.bsky.social
I listen to volcanoes with my eyes.
Infrasound obsessed since '06
Infrasound, volcanoes, seismology
https://orcid.org/0000-0003-3590-1549
Infrasound obsessed since '06
Infrasound, volcanoes, seismology
https://orcid.org/0000-0003-3590-1549
Pinned
Anna Perttu
@infrasound.bsky.social
· Oct 1
Advances in Seismoacoustics I Oral
This session explores advances in research on seismoacoustic signals—acoustic and seismic waves generated by natural phenomena (e.g., earthquakes, volcanoes, severe weather) and anthropogenic sources ...
agu.confex.com
#AGU25 session schedule is out! Looks like December 18 is Infrasound day!
Oral I: agu.confex.com/agu/agu25/me...
Oral II: agu.confex.com/agu/agu25/me...
Posters III: agu.confex.com/agu/agu25/me...
#TeamInfrasound
Oral I: agu.confex.com/agu/agu25/me...
Oral II: agu.confex.com/agu/agu25/me...
Posters III: agu.confex.com/agu/agu25/me...
#TeamInfrasound
Reposted by Anna Perttu
We have reviewed a magnitude 6.0 event that occurred at 08:11 AM AK time, northwest of Anchorage and at 43 miles depth.
This event was felt widely throughout south-central Alaska, and as far as Fairbanks.
For more information, please visit
https://earthquake.alaska.edu/event/ak2025xjbvhj
This event was felt widely throughout south-central Alaska, and as far as Fairbanks.
For more information, please visit
https://earthquake.alaska.edu/event/ak2025xjbvhj
Willow M6.0 | Alaska Earthquake Center
Alaskan Earthquake Center
earthquake.alaska.edu
November 27, 2025 at 5:38 PM
We have reviewed a magnitude 6.0 event that occurred at 08:11 AM AK time, northwest of Anchorage and at 43 miles depth.
This event was felt widely throughout south-central Alaska, and as far as Fairbanks.
For more information, please visit
https://earthquake.alaska.edu/event/ak2025xjbvhj
This event was felt widely throughout south-central Alaska, and as far as Fairbanks.
For more information, please visit
https://earthquake.alaska.edu/event/ak2025xjbvhj
Reposted by Anna Perttu
An explosive #eruption of Hayli Gubbi #volcano, located SE of Erta'Ale in the Afar Rift (Ethiopia), began at ~08:30 UTC on Nov 23. Eruption onset was fortuitously captured by a @planet.com overpass at 08:31 UTC. Hayli Gubbi has no record of Holocene eruptions. Toulouse VAAC reporting ash to ~15 km.
November 23, 2025 at 5:23 PM
An explosive #eruption of Hayli Gubbi #volcano, located SE of Erta'Ale in the Afar Rift (Ethiopia), began at ~08:30 UTC on Nov 23. Eruption onset was fortuitously captured by a @planet.com overpass at 08:31 UTC. Hayli Gubbi has no record of Holocene eruptions. Toulouse VAAC reporting ash to ~15 km.
Excellent thread by @geophysichick.bsky.social ! This sort of thing always reminds me though that this is part of the tradeoff for public real-time data. We can and should expect this sort of nonsense.
I absolutely understand why some places chose to not have public data.
I absolutely understand why some places chose to not have public data.
Speaking of bad science in media (and I am using the term "media" pretty loosely here), allow me to use The Daily Mail as evidence of why you should get your science information from reputable agencies rather than crap websites. I'm not going to link the article, but it looks like this:
1/n
1/n
November 20, 2025 at 7:29 AM
Excellent thread by @geophysichick.bsky.social ! This sort of thing always reminds me though that this is part of the tradeoff for public real-time data. We can and should expect this sort of nonsense.
I absolutely understand why some places chose to not have public data.
I absolutely understand why some places chose to not have public data.
Reposted by Anna Perttu
Getting clocks synched between seismic stations is crucial for various applications, including methods to monitor active volcanoes. A new #SRL paper looks at decadal data from Marapi volcano in Indonesia to assess clock errors. ⚒️
pubs.geoscienceworld.org/ssa/srl/arti...
pubs.geoscienceworld.org/ssa/srl/arti...
November 17, 2025 at 8:02 PM
Getting clocks synched between seismic stations is crucial for various applications, including methods to monitor active volcanoes. A new #SRL paper looks at decadal data from Marapi volcano in Indonesia to assess clock errors. ⚒️
pubs.geoscienceworld.org/ssa/srl/arti...
pubs.geoscienceworld.org/ssa/srl/arti...
Reposted by Anna Perttu
⚡️Solar storm incoming! We are actively monitoring severe space weather events, occurring on 11-12 November. Severely disturbed geomagnetic conditions are expected to persist for at least 24 to 48 hours.
🔗 www.esa.int/Space_Safety...
@operations.esa.int @science.esa.int
🔗 www.esa.int/Space_Safety...
@operations.esa.int @science.esa.int
November 12, 2025 at 3:48 PM
⚡️Solar storm incoming! We are actively monitoring severe space weather events, occurring on 11-12 November. Severely disturbed geomagnetic conditions are expected to persist for at least 24 to 48 hours.
🔗 www.esa.int/Space_Safety...
@operations.esa.int @science.esa.int
🔗 www.esa.int/Space_Safety...
@operations.esa.int @science.esa.int
Reposted by Anna Perttu
NOAA is undercutting their own agency from providing timely tsunami warnings. This affects more than just Alaska- many earthquakes and tsunamis that originate there impact communities across the Pacific.
NOAA cancels funding for data collection crucial to tsunami warning systems
The Alaska Earthquake Center has long provided NOAA with seismic data for tsunami monitoring and warning purposes. That work will wind down in November, after the federal agency said it can no longer ...
alaskapublic.org
November 3, 2025 at 5:22 PM
NOAA is undercutting their own agency from providing timely tsunami warnings. This affects more than just Alaska- many earthquakes and tsunamis that originate there impact communities across the Pacific.
Reposted by Anna Perttu
Reposted by Anna Perttu
The 28 March earthquake in Mandalay, Myanmar, caused fatalities across a broad swath of the country and beyond.
This special issue of Science features papers exploring the risk and reasons behind the anomalously fast, sustained rupture. https://scim.ag/3JnMTbO
This special issue of Science features papers exploring the risk and reasons behind the anomalously fast, sustained rupture. https://scim.ag/3JnMTbO
October 30, 2025 at 6:05 PM
The 28 March earthquake in Mandalay, Myanmar, caused fatalities across a broad swath of the country and beyond.
This special issue of Science features papers exploring the risk and reasons behind the anomalously fast, sustained rupture. https://scim.ag/3JnMTbO
This special issue of Science features papers exploring the risk and reasons behind the anomalously fast, sustained rupture. https://scim.ag/3JnMTbO
Reposted by Anna Perttu
⚒️ 🧪
Today, Science released a special issue about the M7.7 earthquake that struck Myanmar in March. We were invited to write a perspective about the four research papers in the special issue.
Find our post, including the text of our perspective, here:
Today, Science released a special issue about the M7.7 earthquake that struck Myanmar in March. We were invited to write a perspective about the four research papers in the special issue.
Find our post, including the text of our perspective, here:
Perspective on the 2025 M7.7 earthquake in Myanmar
Published in Science today: four new articles, and our perspective
earthquakeinsights.substack.com
October 30, 2025 at 6:44 PM
⚒️ 🧪
Today, Science released a special issue about the M7.7 earthquake that struck Myanmar in March. We were invited to write a perspective about the four research papers in the special issue.
Find our post, including the text of our perspective, here:
Today, Science released a special issue about the M7.7 earthquake that struck Myanmar in March. We were invited to write a perspective about the four research papers in the special issue.
Find our post, including the text of our perspective, here:
Reposted by Anna Perttu
Solid advice here but I disagree with the first point for one reason: accessibility.
Having text as 2 or 3 short bullet points on your slide will help deaf and HoH folks (such as myself) follow your talk as they might not be able to hear you.
Having text as 2 or 3 short bullet points on your slide will help deaf and HoH folks (such as myself) follow your talk as they might not be able to hear you.
I find there's a huge mismatch between the standard advice that people give about scientific conference talks, and how people actually give talks.
So I picked out the most important pieces of advice that are most often ignored. 🧪
So I picked out the most important pieces of advice that are most often ignored. 🧪
The best scientific talk advice that gets ignored
Here are some prescriptions for a case of UCPS (Unengaging Conference Presentation Syndrome).
scienceforeveryone.science
October 29, 2025 at 12:38 AM
Solid advice here but I disagree with the first point for one reason: accessibility.
Having text as 2 or 3 short bullet points on your slide will help deaf and HoH folks (such as myself) follow your talk as they might not be able to hear you.
Having text as 2 or 3 short bullet points on your slide will help deaf and HoH folks (such as myself) follow your talk as they might not be able to hear you.
Reposted by Anna Perttu
Introducing Cardinal, an open-source Python code that can processes seismic and infrasound array data in discretized time–frequency space. ⚒️
pubs.geoscienceworld.org/ssa/srl/arti...
pubs.geoscienceworld.org/ssa/srl/arti...
October 16, 2025 at 10:02 PM
Introducing Cardinal, an open-source Python code that can processes seismic and infrasound array data in discretized time–frequency space. ⚒️
pubs.geoscienceworld.org/ssa/srl/arti...
pubs.geoscienceworld.org/ssa/srl/arti...
Come hear unheard sounds and find out how they can make you feel sick and even see ghosts.
www.youtube.com/watch?v=UTvr...
www.youtube.com/watch?v=UTvr...
Infrasound: What You Can't Hear CAN Hurt You
YouTube video by Benn Jordan
www.youtube.com
October 12, 2025 at 6:55 PM
Hey #TeamInfrasound I always enjoy my alerts this time I got a youtube video! @bennjordan.bsky.social did a video and has some awesome ambient anthropogenic recordings! youtu.be/UTvr8L5v8u8?...
Infrasound: What You Can't Hear CAN Hurt You
YouTube video by Benn Jordan
youtu.be
October 12, 2025 at 6:49 PM
Hey #TeamInfrasound I always enjoy my alerts this time I got a youtube video! @bennjordan.bsky.social did a video and has some awesome ambient anthropogenic recordings! youtu.be/UTvr8L5v8u8?...
Reposted by Anna Perttu
We have a #MinCup25 champion!!
Congratulations, #Kyanite!
www.mineralcup.org/2025
After eight years of competing, another few hours to verify votes was nothing, right?
Amazing first run, #Tugtupite, and better luck next year.
Congratulations, #Kyanite!
www.mineralcup.org/2025
After eight years of competing, another few hours to verify votes was nothing, right?
Amazing first run, #Tugtupite, and better luck next year.
2025 — Mineral Cup
www.mineralcup.org
October 2, 2025 at 8:15 AM
We have a #MinCup25 champion!!
Congratulations, #Kyanite!
www.mineralcup.org/2025
After eight years of competing, another few hours to verify votes was nothing, right?
Amazing first run, #Tugtupite, and better luck next year.
Congratulations, #Kyanite!
www.mineralcup.org/2025
After eight years of competing, another few hours to verify votes was nothing, right?
Amazing first run, #Tugtupite, and better luck next year.
I was heartbroken to hear of the end of TTBOOK.
I have been listening to "To The Best Of Our Knowledge" for what feels like my whole life. I don't think its possible to express the impact it has had on my life.
It has 35 years of compelling ideas and interviews in their archive
www.ttbook.org
I have been listening to "To The Best Of Our Knowledge" for what feels like my whole life. I don't think its possible to express the impact it has had on my life.
It has 35 years of compelling ideas and interviews in their archive
www.ttbook.org
To The Best Of Our Knowledge
Intelligent. Optimistic. Curious.
www.ttbook.org
October 2, 2025 at 9:02 PM
I was heartbroken to hear of the end of TTBOOK.
I have been listening to "To The Best Of Our Knowledge" for what feels like my whole life. I don't think its possible to express the impact it has had on my life.
It has 35 years of compelling ideas and interviews in their archive
www.ttbook.org
I have been listening to "To The Best Of Our Knowledge" for what feels like my whole life. I don't think its possible to express the impact it has had on my life.
It has 35 years of compelling ideas and interviews in their archive
www.ttbook.org
Reposted by Anna Perttu
Jane Goodall’s legacy: three ways she changed science
Jane Goodall’s legacy: three ways she changed science
The primatologist challenged what it meant to be a scientist.
www.nature.com
October 2, 2025 at 8:16 PM
Jane Goodall’s legacy: three ways she changed science
#AGU25 session schedule is out! Looks like December 18 is Infrasound day!
Oral I: agu.confex.com/agu/agu25/me...
Oral II: agu.confex.com/agu/agu25/me...
Posters III: agu.confex.com/agu/agu25/me...
#TeamInfrasound
Oral I: agu.confex.com/agu/agu25/me...
Oral II: agu.confex.com/agu/agu25/me...
Posters III: agu.confex.com/agu/agu25/me...
#TeamInfrasound
Advances in Seismoacoustics I Oral
This session explores advances in research on seismoacoustic signals—acoustic and seismic waves generated by natural phenomena (e.g., earthquakes, volcanoes, severe weather) and anthropogenic sources ...
agu.confex.com
October 1, 2025 at 8:54 PM
#AGU25 session schedule is out! Looks like December 18 is Infrasound day!
Oral I: agu.confex.com/agu/agu25/me...
Oral II: agu.confex.com/agu/agu25/me...
Posters III: agu.confex.com/agu/agu25/me...
#TeamInfrasound
Oral I: agu.confex.com/agu/agu25/me...
Oral II: agu.confex.com/agu/agu25/me...
Posters III: agu.confex.com/agu/agu25/me...
#TeamInfrasound
I am always happy to chat away about #infrasound! You never know when someone might bring up a colleague who you didn't know about who worked in the field back in the day when things were less... open...
October 1, 2025 at 12:51 AM
I am always happy to chat away about #infrasound! You never know when someone might bring up a colleague who you didn't know about who worked in the field back in the day when things were less... open...
Reposted by Anna Perttu
#MinCup25 Final: After a month of learning and laughter, we’re at the final match to determine the 2025 Mineral Cup Champion! We have blue blades of #kyanite up against optical magician #tugtupite.
Vote: www.mineralcup.org/2025/vote/r5...
Results: www.mineralcup.org/2025/results...
Vote: www.mineralcup.org/2025/vote/r5...
Results: www.mineralcup.org/2025/results...
Vote in 2025 Final Match — Mineral Cup
Click here to vote in Kyanite vs Tugtupite Photo credits: John Sobolewski and Parent Géry
www.mineralcup.org
October 1, 2025 at 12:13 AM
#MinCup25 Final: After a month of learning and laughter, we’re at the final match to determine the 2025 Mineral Cup Champion! We have blue blades of #kyanite up against optical magician #tugtupite.
Vote: www.mineralcup.org/2025/vote/r5...
Results: www.mineralcup.org/2025/results...
Vote: www.mineralcup.org/2025/vote/r5...
Results: www.mineralcup.org/2025/results...
Reposted by Anna Perttu
Every year at Tucson Gem show, I gaze lovingly at the tables of the perfect shade of green. Every year, I find a little Dioptase cave that I want to curl up in like a tiny dragon.
Also, I once saw a tiny gem cut Dioptase for $80. I cry over not purchasing it.
#MinCup25
Vote Dioptase!
Also, I once saw a tiny gem cut Dioptase for $80. I cry over not purchasing it.
#MinCup25
Vote Dioptase!
September 30, 2025 at 7:54 AM
Every year at Tucson Gem show, I gaze lovingly at the tables of the perfect shade of green. Every year, I find a little Dioptase cave that I want to curl up in like a tiny dragon.
Also, I once saw a tiny gem cut Dioptase for $80. I cry over not purchasing it.
#MinCup25
Vote Dioptase!
Also, I once saw a tiny gem cut Dioptase for $80. I cry over not purchasing it.
#MinCup25
Vote Dioptase!
Reposted by Anna Perttu
No seriously, the reason to vote for haüyne is that it's the absolute bluest thing--it is the super expensive blue that traditional aquamarine paint was made from (lazurite per MinDat when analyzed is just a variety of haüyne).
Haüyne
Sodalite Group.
Also classed in the Feldspathoid Supergroup.
Ideally, the two sodalite cages in haüyne's unit cell contain Na^3CaSO^4.
Pale-coloured ...
www.mindat.org
September 25, 2025 at 7:19 PM
Reposted by Anna Perttu
September 7, 2025 at 4:21 PM
Reposted by Anna Perttu
Here's the @auscope.bsky.social Seismometers in Schools recording this morning's M7.8 Kamchatka earthquake. Data and network visualisation is from SRC's Seismosphere.
The 24-hour single station view from Nhulunbuy in the Northern Territory shows the seismometer detecting the earth ringing for hours!
The 24-hour single station view from Nhulunbuy in the Northern Territory shows the seismometer detecting the earth ringing for hours!
September 19, 2025 at 7:10 AM
Here's the @auscope.bsky.social Seismometers in Schools recording this morning's M7.8 Kamchatka earthquake. Data and network visualisation is from SRC's Seismosphere.
The 24-hour single station view from Nhulunbuy in the Northern Territory shows the seismometer detecting the earth ringing for hours!
The 24-hour single station view from Nhulunbuy in the Northern Territory shows the seismometer detecting the earth ringing for hours!
Reposted by Anna Perttu
The reason I started saying this is b/c many of my students haven’t had opportunities to actually think for themselves or collaboratively come to consensus to shape an idea. I blame this on k-12 standardized tests/worksheets and poor/uneven implementation of NGSS (what science ed *should* be).
I found a phrase that is resonating with my Intro Geosci and lab students this semester:
It’s not about “right answers” in our labs, it’s about “reasonable answers” based on evidence.
They’re taking a lot more chances and seem to be even more engaged than usual.
It’s not about “right answers” in our labs, it’s about “reasonable answers” based on evidence.
They’re taking a lot more chances and seem to be even more engaged than usual.
September 19, 2025 at 2:16 AM
The reason I started saying this is b/c many of my students haven’t had opportunities to actually think for themselves or collaboratively come to consensus to shape an idea. I blame this on k-12 standardized tests/worksheets and poor/uneven implementation of NGSS (what science ed *should* be).