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Reposted by Alka Tripathy-Lang

John Cassidy @earthquakeguy.bsky.social · 8h

Right on schedule! More than 10,000 tiny tremors (not felt) have rolled through #PugetSound and southern #VancouverIsland over the past 30 days. This is Episodic Tremor and Slip (ETS) and occurs here every 12-16 months:
www.earthquakescanada.nrcan.gc.ca/pprs-pprp/pu...
Also - it is #ShakeOut day!
⚒️🧪

Map of the Puget Sound and Vancouver Island region showing the location of tiny ETS tremors (not earthquakes and not felt) from September 15 - October 15. Locations are colour-coded by time.

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Reposted by Alka Tripathy-Lang

Geology Johnson @geologyjohnson.bsky.social · 1d

Oxidised (left) and unoxidised 3.2 billion year old banded iron formation. These samples are from drill core and were only a couple of meters apart. #geology #paleontology

Photograph of a human hand holding two long pieces of rock. The left rock has alternating layers of red, dark grey and light grey. The right rock has many fine undulating layers of alternating grey, green, and black.

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Reposted by Alka Tripathy-Lang

Howard Lee @hlee.bsky.social · 2d

"we propose this Potassium-40 deficit represents primitive proto-Earth mantle domains that largely escaped mantle mixing after the [moon-forming] giant impact and exist in the present-day deep mantle, contributing to some modern hotspot volcanism" ⚒️
www.nature.com/articles/s41...

Potassium-40 isotopic evidence for an extant pre-giant-impact component of Earth’s mantle - Nature Geoscience

Some mafic rocks have a ⁴⁰K/³⁹K ratio lower than all other terrestrial samples, according to isotopic composition analyses, suggesting parts of Earth’s mantle have retained their composition prior to ...

www.nature.com

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Alka Tripathy-Lang @dralkatrip.bsky.social · 1d

My latest for @earthscope.org combines Silurian reef systems with seismology! The highlighted research looks at how to parse noisy seismic data from a single station in the Chicago area. ⚒️🧪

www.earthscope.org/news/chicago...

Chicago’s seismicity captured by single seismic station | EarthScope Consortium

Model catalogs quarry blasts, heavy machinery noise, and other anthropogenic signals that can muddy seismic data.

www.earthscope.org

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Reposted by Alka Tripathy-Lang

Dr. Wendy Bohon @drwendyrocks.bsky.social · 1d

Tomorrow is ShakeOut!

On October 16 you can join geologists from the @cageosurvey.bsky.social at Tech Interactive in San Jose and in the California Natural Resources Agency Building as we talk about earthquake science and how to be earthquake ready.

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Reposted by Alka Tripathy-Lang

Steve Elardo @steve-elardo.com · 6d

I'm incredibly honored to be a part of this team and proud of this award!!! But I'm just a very small part of this program. Anita Marshall @bakingsodavolc.bsky.social deserves all the credit for the idea, the passion, the grunt work, and for its success!!! ⚒️🧪🔭

UF Geology @ufgeology.bsky.social · 6d

🎉🏆🥳UF Geology's GeoSPACE field program has been honored with the Award for Advancing Inclusive Excellence in STEM from @agu.org!!! Led by Prof. Anita Marshall @bakingsodavolc.bsky.social, it's the first designed to be accessible to students with disabilities and other complicating life factors ⚒️🧪🔭

GeoSPACE field program honored with national award for advancing inclusive STEM education

GeoSPACE is the first geoscience field camp designed specifically to be accessible and inclusive for students and faculty with disabilities.

news.clas.ufl.edu

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Alka Tripathy-Lang @dralkatrip.bsky.social · 6d

My latest for @earthscope.org, a dive into mapping sediment thickness across the US with Transportable Array data! ⚒️

www.earthscope.org/news/a-new-m...

A new map charts sediment thickness across the continental US | EarthScope Consortium

No single map of sediment thickness across the conterminous U.S. existed that used a consistent method — until this new one based on Transportable Array seismic data.

www.earthscope.org

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Alka Tripathy-Lang @dralkatrip.bsky.social · 6d

Highly recommend:
1. Science on a Mission by Naomi Oreskes (www.sciencenews.org/article/new-...)
2. The Last Days of the Dinosaurs by Riley Black (www.sciencenews.org/article/dino...)
3. Turning to Stone by Marcia Bjornerud (www.sciencenews.org/article/turn...)

‘Turning to Stone’ paints rocks as storytellers and mentors

Part memoir, part geology explainer, Marcia Bjornerud’s latest book explores the hidden wisdom of Earth’s rocks.

www.sciencenews.org

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Alka Tripathy-Lang @dralkatrip.bsky.social · 13d

For @temblorinc.bsky.social, @beccapox.bsky.social writes about interesting new developments in tsunami early warning using prompt elastogravity waves, a small-amplitude, fast-moving seismic wave. ⚒️🧪

Temblor, Inc. @temblorinc.bsky.social · 13d

Tsunami early warning systems offer important information about impending waves. New systems, like one that uses prompt elastogravity signals (or PEGS) can increase the timeliness and accuracy of warnings. For more, check out Temblor's latest, by @beccapox.bsky.social

temblor.net/earthquake-i...

Upgrading Tsunami Warning Systems for Faster and More Accurate Alerts - Temblor.net

Tsunami early warning systems offer important information about impending waves. New systems can increase the timeliness and accuracy of warnings. By Rebecca Owen, Science Writer (@beccapox and @bec...

temblor.net

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Reposted by Alka Tripathy-Lang

Dr. Wendy Bohon @drwendyrocks.bsky.social · 24d

This earthquake was originally reported as a magnitude 4.6 but was downgraded to a magnitude 4.3.

Remember, there is a trade off between speed and accuracy. As more data becomes available the initial reports are likely to be adjusted to reflect our improved understanding.

Feature not bug.

Dr. Wendy Bohon @drwendyrocks.bsky.social · 24d

M 4.3 - 2 km ESE of Berkeley, CA

earthquake.usgs.gov/earthquakes/...

Map of the San Francisco Bay Area showing the location of the earthquake marked by a star and the level of shaking marked by different colors.

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Alka Tripathy-Lang @dralkatrip.bsky.social · Sep 15

What went well, and what needs to be improved when it comes to major earthquakes that shake Istanbul? In @temblorinc.bsky.social 's latest, experts explore aspects of a recent M6.2 earthquake that shook the city and reportedly caused panic. 🧪⚒️

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Alka Tripathy-Lang @dralkatrip.bsky.social · Sep 13

How does insurance work when it comes to events like tsunamis? This short Temblor article describes one way path, built on NOAA's tsunami monitoring efforts. 10 days after the Kamchatka tsunami hit Samoa, the country received a payout from PCRIC. ⚒️🧪

Temblor, Inc. @temblorinc.bsky.social · Sep 13

Just 10 days after the Kamchatka tsunami hit the shores of Samoa, the island nation received a payout from the Pacific Catastrophe Risk Insurance Company. Temblor played a role in this process.

temblor.net/earthquake-i...

2025 Kamchatka tsunami triggered rapid insurance payout in the South Pacific - Temblor.net

Just 10 days after the Kamchatka tsunami hit its shores, the island nation of Samoa received a payout from the Pacific Catastrophe Risk Insurance Company (PCRIC), a regional development insurer. ...

temblor.net

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Alka Tripathy-Lang @dralkatrip.bsky.social · Sep 10

Long but interesting! Check out @temblorinc.bsky.social's latest on the July 2025 Kamchatka earthquake, in which Temblor scientists look at stress transfer associated with 2 foreshocks. They also compare the mainshock to a similar 1952 quake, explore some tsunamis, and consider an eruption. ⚒️🧪

Temblor, Inc. @temblorinc.bsky.social · Sep 10

Temblor's analysis of the July 2025 magnitude 8.8 Kamchatka quake explores some mysteries (a moderate tsunami, a curious eruption), and finds that the 10-day foreshock was exceptionally productive.

temblor.net/earthquake-i...

Huge July 2025 Kamchatka earthquake followed unusually productive foreshock sequence - Temblor.net

A large foreshock that struck 10 days before the magnitude 8.8 Kamchatka earthquake brought the epicentral megathrust patch closer to failure and produced an exceptionally abundant burst of aftershock...

temblor.net

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Reposted by Alka Tripathy-Lang

Seismological Society of America @seismosocam.bsky.social · Sep 9

📣 SSA is seeking nominations for the Editor-in-Chief of the Bulletin of the Seismological Society of America #BSSA. Nominations are open through October 2025.
⭐ Full Job Description: www.seismosoc.org/news/ssa-see...
⭐ Nomination Link: www.seismosoc.org/publications...

SSA Seeks New BSSA Editor-in-Chief | Seismological Society of America

15 August 2025—The Seismological Society of America announces its search for the next Editor-in-Chief (EIC) of the Bulletin of the Seismological Society of America (BSSA), its flagship, peer-reviewed…

www.seismosoc.org

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Reposted by Alka Tripathy-Lang

JMARS @jmars-gis.bsky.social · Sep 3

JMARS VIRTUAL TRAINING: New User Introduction

Tuesday, September 16, 2025, 9am-1pm MST.

This is intended for New Users interested in learning the basics of JMARS software. Please sign up to participate at:

tinyurl.com/mum73suk

DEADLINE for registration is September 9th!

A computer screen showing a tool that allows for the display and analysis of planetary maps and other data known as JMARS. The tool is currently showing a large portion of the surface of Mars in false-color infrared, centered around the Mariner Valley.

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Alka Tripathy-Lang @dralkatrip.bsky.social · Aug 29

Just downloaded! Going to love this when we go camping in a few weeks. Thanks for the rec! I'll use both the USGS site and RockD and report back my thoughts (if I remember to come back to this thread 🙃).

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Alka Tripathy-Lang @dralkatrip.bsky.social · Aug 29

pC geology-only fail. Definitely... not what those boundaries look like between Idaho, Oregon and Nevada.

Map of border region of Nevada (South), Idaho and Oregon that's meant to show precambrian geology.

Alka Tripathy-Lang @dralkatrip.bsky.social · Aug 29

I've never used it!

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Alka Tripathy-Lang @dralkatrip.bsky.social · Aug 29

I'm glad to find that this is easy to do on the phone as well. I'm happily using two fingers to cruise around California at the moment!

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Alka Tripathy-Lang @dralkatrip.bsky.social · Aug 29

So, to answer @callanbentley.bsky.social's question: in some ways, it could be so much better. But it's a pretty neat resource to have available to the general public. Anyone can pull this up on their phone and see what kinds of rocks they're in, how old they are, and what they're called.

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Alka Tripathy-Lang @dralkatrip.bsky.social · Aug 29

Another gripe: I can't zoom in as much as I need! Maybe I'm just zoomed out too much to see, and it *is * actually correct! I can't tell!

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Alka Tripathy-Lang @dralkatrip.bsky.social · Aug 29

For example, I zoomed into the region where I did my MS thesis, and it's... not quite right? It has different lithologies on either side of the road. Definitely not true, but you'd need to look at papers or go there to know this.

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Alka Tripathy-Lang @dralkatrip.bsky.social · Aug 29

There is absolutely so much detail missing, especially at the outcrop scale.

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Alka Tripathy-Lang @dralkatrip.bsky.social · Aug 29

The thick red line sucks, especially when you're zoomed out.

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Alka Tripathy-Lang @dralkatrip.bsky.social · Aug 29

I can't decide what I think about the options for synthesis/source/geomaterial/age.

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