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Anna Perttu

@infrasound

I listen to volcanoes with my eyes. Infrasound obsessed since '06 Infrasound, volcanoes, seismology https://orcid.org/0000-0003-3590-1549

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04.08.2023
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Latest posts by Anna Perttu @infrasound

Photo of the volcanic disaster game with a mini graduation cap on the box

Photo of the volcanic disaster game with a mini graduation cap on the box

Best way to celebrate my defense is several rounds of my favorite volcano themed game with friends!

07.03.2026 05:18 πŸ‘ 3 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

I defended and passed my PhD defense yesterday. I'm almost back, just an international move....

05.03.2026 16:16 πŸ‘ 9 πŸ” 0 πŸ’¬ 3 πŸ“Œ 0

Like-Follow-Subscribe for more really dumb geology jokes

05.03.2026 15:50 πŸ‘ 27 πŸ” 5 πŸ’¬ 6 πŸ“Œ 0

YES

05.03.2026 16:15 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Newspaper article called Ominous Findings on Seattle Quake Risk in the Seattle times

Newspaper article called Ominous Findings on Seattle Quake Risk in the Seattle times

Image of the destruction of the Kingdom stadium in Seattle with the reference to the equivalent magnitude of 2.3

Image of the destruction of the Kingdom stadium in Seattle with the reference to the equivalent magnitude of 2.3

This ran on January 23, 2001. I also love how the destruction of the Kingdome πŸ’” was used as a magnitude reference.

02.03.2026 07:10 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Thought I would share another one from apparently my Nisqually Earthquake newspaper archive.

About a month earlier the Seattle Times ran a section on the earthquake risk in Seattle.

02.03.2026 07:06 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

This quake also taught me about the dangers of bricks in earthquakes and lets face it started the Alaskan Way Viaduct saga. Which is one of the BEST stories to illustrate how hilarious getting anything done in Seattle can be.

02.03.2026 06:58 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

I was allowed to go on "crack" patrol to check the building. This was the second significant earthquake I remember from growing up in Seattle. The first one taught me about particle motion and this one taught me about local geology impacts on shake magnitude.

02.03.2026 06:56 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
Nisqually Earthquake 25th Anniversary
Nisqually Earthquake 25th Anniversary YouTube video by KING 5 Seattle

25 years ago the Blanchet HS Basketball team was at State and we were given a late start. Walking into school I tripped going up the steps. I thought I was just tired. When I went in the front door the lights were swinging.
youtu.be/2FIS1myejCc?...

02.03.2026 06:55 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
Design like a rosec made by a pendulum in sand by an earthquake

Design like a rosec made by a pendulum in sand by an earthquake

Newspaper clipping from March 14, 2001 about the earthquake rose in port Townsend

Newspaper clipping from March 14, 2001 about the earthquake rose in port Townsend

Going through papers at my parents house I found newspapers from the 2001 Nisqually earthquake. With my favorite being the article about the "earthquake rose"

01.03.2026 01:59 πŸ‘ 8 πŸ” 3 πŸ’¬ 1 πŸ“Œ 1

I LOVE IT!

25.02.2026 16:57 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

My defense is the first week in March. I have to say I have been enjoying having student discounts on my memberships again (and keep giggling that I have reset the ECR clock)

19.02.2026 18:21 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Datacenters Behaving Like Acoustic Weapons
Datacenters Behaving Like Acoustic Weapons YouTube video by Benn Jordan

I have been enjoying @bennjordan.bsky.social videos on #infrasound noise and this new video is also worth watching. youtu.be/_bP80DEAbuo?...

19.02.2026 18:18 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Post image

I am at the High Desert Museum and love this new volcano exhibit!

16.02.2026 18:48 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

And forever thank you to @geophysichick.bsky.social for introducing me to infrasound.

21.01.2026 17:11 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Then I went to Massey to try and answer another question. Can we tell the difference between the plume generated infrasound and other parts of the eruption like PDCs. That is obviously a huge question that I am still working on.

So thank you Augustine for erupting 20 years ago.

21.01.2026 17:10 πŸ‘ 4 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

In Singapore I started taking those tools I had learned and started to try and answer the questions that had come up with the study on Augustine. In Singapore I worked on the plume height question. How far could we push it and could it be operational? The answer? Way further than I thought!

21.01.2026 17:09 πŸ‘ 3 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

I went to UAF with a goal of learning to be a better signal processor knowing that a degree in infrasound wasn't really a thing at that point. I took a job at UH Manoa wanting to further my understanding of infrasound.

21.01.2026 17:07 πŸ‘ 2 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

In my senior year at WWU I did a research project with @geophysichick.bsky.social and was introduced to volcano infrasound. Many questions arose during that project that I have spent the last 20 years trying to answer. That project and eruption has shaped my career.

21.01.2026 17:06 πŸ‘ 3 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
The plume is oranges and purples over the silhouette of trees it was taken between about 1645 and 1700 on 13 January 2006 from Kokhanok on the SE side of Lake Iliamna, Image courtesy of Gerald Andrew.

The plume is oranges and purples over the silhouette of trees it was taken between about 1645 and 1700 on 13 January 2006 from Kokhanok on the SE side of Lake Iliamna, Image courtesy of Gerald Andrew.

Twenty years ago, an eruption occurred in Alaska that had a profound impact on my career: the 2006 eruption of Augustine Volcano. At the time, I was an undergraduate at WWU studying geology, with no long-term plans, taking things one quarter at a time.

21.01.2026 17:04 πŸ‘ 17 πŸ” 3 πŸ’¬ 1 πŸ“Œ 1

Just letting everyone know that I am based in the US for the next 2 months in PST time zone. I am available for talks, seminars, and trainings if anyone is interested.

20.01.2026 23:09 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
lava fountain with two peaks the right taller than the left with koa trees in the foreground

lava fountain with two peaks the right taller than the left with koa trees in the foreground

Had the pleasure of meeting several of the old time park guys out at the volcano yesterday along with my friends daughter!

Now back to work.

13.01.2026 19:28 πŸ‘ 4 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

I am home in Hilo and since I always miss activity I didn't prepare. Does anyone who anyone on island with some sound equipment with a known response? I wanted to get some audio frequency range records of a fountain. Thanks!

10.01.2026 17:37 πŸ‘ 0 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0

Tomorrow I’ll be working on my personal DEI initiative for science literacy for local/Indigenous girls in Hawaii: I’m taking my niece to the beach.

09.01.2026 05:25 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Me: Ok I am finally in the same place for more than 3 days and can get some work done.
My laptop: Would you like a blue screen? Yes lets do that.

06.01.2026 21:44 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

I mean think it all the people who could use it! Also make it dark so people with migraines can hide out waiting for meds to kick in.

17.12.2025 09:59 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

It's part of the process. I have accepted this.

17.12.2025 09:56 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

I mean my first response is always can we get a nap room?

17.12.2025 09:55 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Seriously when it comes to Nature what are we even paying for?

It has become so much easier to find papers with the internet so its not accessibility, it is horrendously expensive, and they cant even catch HUGE issues in their peer review and editing process?

What are we paying for?

09.12.2025 00:55 πŸ‘ 3 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Preview
Springer Nature retracts, removes nearly 40 publications The dataset contains images of children’s faces downloaded from websites about autism, which sparked concerns at Springer Nature about consent and reliability.

Holy CRAP.

Retired engineer takes random pics of *kids*, without consent or attribution, bins them into β€œautistic” or β€œnot autistic”, and uploads that β€œdata” for free on Kaggle.

Well over a HUNDRED papers are published, 38 in Springer Nature, 25 in IEEE, using it.

And no reviewers objected? WTF.πŸ§ͺ

08.12.2025 23:49 πŸ‘ 739 πŸ” 362 πŸ’¬ 14 πŸ“Œ 0