New seafloor mapping offshore Alaska in the Alaska-Aleutian subduction zone! #USGS #NOAA #MarineGeohazards 🧪⚒️🌊

Alaska Earthquake Center posted a nice explainer video with some of the video reconnaissance following the recent #landslide and #tsunami in Tracy Arm, south of Juneau, Alaska. It’s a whopper! 🧪⚒️

the California Geological Survey has prepared a survey to gather your observations from the M8.8 Kamchatka, Russia Tsunami If you have been able to make any observations of the tsunami or of the evidence left behind by tsunami, we want your information: survey123.arcgis.com/share/76979d...

An important reminder from the US National Weather service regarding the US west coast tsunami advisories following today’s M8.8 Kamchatka quake:

The Ecosystems Mission area is a major component of the USGS Alaska Science Center, along with Earthquake, Landslide and Volcano Hazards, Energy & Minerals - these folks are hard working scientists who do great work. 🧪⚒️

The USGS is the only non-regulatory federal agency with a mission to conduct science in the public interest. The President’s FY26 budget aims to zero out the Ecosystems Mission Area. The quote from the NPR story below shocked me. See what they do: geonarrative.usgs.gov/ecosystemsmi... 🧪⚒️

Rain or shine, it’s always a good day to survey submarine landslides in #Alaska! #USGS #Coastal & #Marine #Geohazards 🧪⚒️🌊

Everytime I this video of surface rupture/offset from the recent Myanmar #earthquake it’s 🤯 and now a peek athe rupture up close from thr otber side if the fence - so cool! 🧪⚒️ Link to original video: youtu.be/77ubC4bcgRM

Another curious specimen from marine sediment cores - anyone have thoughts on what these copper brown coils might be? Could be terrestrial (from ice age) or marine. 👽, 🐌, 💩 have all been suggested… This sample is from the Bering Shelf in about 40m of water. 🧪⚒️🌊

Check out this nice study about the cascading hazards in the Cascadia subduction zone 🧪⚒️🌊

Seafloor enthusiasts! We now have a complete set of high resolution seafloor bathymetry grids for the Cascadia subduction zone (offshore Washington, Oregon & northern California) available for download! #USGS #data #science #mapping #MarineGeohazards 🧪⚒️🌊 www.usgs.gov/programs/cmh...

I just heard some excellent news regarding one of these datasets - the IMLGS (Index to Marine & Lacustrine Geologic Samples) - SESAR2 (www.geosamples.org) has agreed to host it going forward! 🧪⚒️🌊 This is a super valuable dataset - thanks so much to these colleagues for stepping up.

NOAA just announced a long list of datasets that are going away🧪⚒️🌊: www.nesdis.noaa.gov/about/docume... Download what you need asap and send comments to: [email protected]

Do you like submarine canyons? Check out this nice pilot study we did in Astoria Canyon, offshore Washington and Oregon - led by graduate student Evan Lahr - that shows a dynamic sedimentary environment. 🤓 🧪⚒️ Just published in Marine Geology: authors.elsevier.com/c/1kqiT5mVe1...

Did someone say World Glacier Day? I still love this shot of our boat from field work in Prince William Sound, Alaska last summer. We were up there up there studying submarine landslides and will hopefully be back this summer. 🧪⚒️

Peeking at a little bit of sedimentological history 🧪⚒️ IYKYK…and if you don’t know these are old marine sediment cores with some famous names. #geologynerds

He does make the best Seismology tshirts! 🤘🏻🤘🏻

Jan. 26, 2025, marks 325 years since the last great earthquake on the Cascadia subduction zone. We still have work to do to understand when the next great quake will occur & how to best respond when the shaking starts. The M7 Dec 2024 offshore quake & tsunami alert highlighted these shortcomings. 🧪⚒️

Faculty and staff at Sonoma State University were just notified of the closing of the Geology Department - they are organizing an email letter writing campaign for Monday 1/27 to rally support - see below🧪⚒️ It’s awful to see the closing of another Geology department and big loss for the community.

Just wrapped up a great 2 days of science 🧪 ⚒️ discussions at the #USGS Subduction Zone Science workshop with offshore and onshore observations in subduction zones to increase understanding of processes driving geohazards and communicating science to bolster societal resilience.

🌋Kilauea is erupting at the summit again! I’m thinking we should put the livestream on the TV in place of a fake fire 🔥 for holiday ambiance. 😆 Here’s the #USGS livestream - there’s some impressive lava fountains: 🧪⚒️ www.youtube.com/live/w0KulR_...

It’s the last day of #AGU2024 (good thing since I’ve lost my voice!) but there’s still plenty of great science today - come check out our poster session on Geohazards in Coastal, Marine and Lacustrine Environments (NH51G) 🧪⚒️ My poster on Cascadia earthquake records from marine turbidites is #2484.

Posting again b/c I forgot the symbols and the science is so cool!🧪⚒️

AGU put out a press release about our #AGU2024 presentations on the Bering Land Bridge (which, ICYMI is it a massive amount of exposed land during sea level lowstands!) Check out the teaser below and come see our posters if you are in town! PP23C-0564 to 0569 (Tuesday afternoon)

#AGU2024 week is here! We have a bunch of exciting posters on the paleolandscape of the Bering Land Bridge on Tuesday and then lots of great presentations on Cascadia and Alaska earthquake/tsunami/landslide hazards on Thursday/Friday. 🧪⚒️

Hi everyone - just a reminder that when there’s a big earthquake in your region, it is really helpful to earthquake scientists if you fill our the “Did You Feel It” report on the USGS earthquake event page - even if it was just mild shaking or you didn’t feel it all - all the data is helpful! 🧪⚒️

Colleagues happened to be en route to field work in Eel River when M7 #earthquake happened yesterday near Cape Mendocino, so they got a great opportunity to document some co-seismic landslides. Here’s a couple of nice pics they snapped on the beach before the tides take it away. 🧪⚒️

Wow! We really felt the Humboldt M7 and associated #earthquakes all the way down here in Santa Cruz just now. Have been scrambling around to get more info and see what we can do for response. Nothing like a little pre-#AGU earthquake excitement! earthquake.usgs.gov/earthquakes/...

I feel like this is a common misconception, so I’m just going to put this out there: the “Bering Land Bridge”* was not ‘a small strip of land’. 🧪⚒️ *where the humans and lots of other animals migrated from Eurasia to North America during the last ice age (1/2)

Hey! Earth science 🧪⚒️ and #scicomm folks, Eos is here!

A nice piece in the WaPo on the earthquake and tsunami hazards of the PNW featuring several of my wonderful and wonderfully talented colleagues!

I’ve been cramming in extra hours and asking myself why I thought it was a good idea to do 2 posters for #AGU2024 🤔 —>THERE’S JUST SO MUCH COOL #SCIENCE!! I’ve got a poster in the works on the paleo-landscape of the Bering Land Bridge and one on Cascade #earthquake records. It’s going to be fun!

This is a helpful explainer on how earthquake magnitude is measured…

Making plans for field work in Alaska next summer and looking forward to more spectacular scenery at sea! This was from one our anchorages in Prince William Sound last year. #FieldWorkFriday

@earth-science.bsky.social 👋🏻 Marine Geologist here, would you please add me to the Earth Scientists feed? Thx

Show me a picture, new or old of #AlaskaSky Dutch Harbor,September 2023

Another microscope 🔬 mystery! Any ideas what this fossil might be? It’s about 1.5cm long. It was buried in about 2m of marine mud in 570m water depth, offshore of Washington. We think the mud is 10,000ish years old. #SciSky 🧪⚒️

Hey #scisky, anyone know what these bits of organic matter in the #microscope photos below might be? 🧪⚒️🔬I feel like we see this a lot but don’t know what it is. These particular samples are from marine sediment cores on the Bering Shelf.

Happy International #ShakeOut Day! It’s good time to think about #earthquake preparedness. 🧪⚒️🌎🌍🌏 Tips and tools here: www.shakeout.org Earthquake early warning apps are also a great tool! Here’s a link to the #USGS #ShakeAlert apps for California, Oregon and Washington: www.usgs.gov/faqs/how-do-...

Fat Bear Week 2024 is here! I love seeing these big, fat, healthy bears of Katmai! Let the voting begin! www.nps.gov/katm/learn/f...

Hello #earthsci grad students! Interested in working with (literal) boatloads of geophysical data & sediment cores to investigate earthquake records from lakes in Alaska? Then we have an excellent postdoc opportunity for you! Please share and reach out if interested. 🧪⚒️ www.usgs.gov/centers/mend...

Lakes are excellent recorders of #earthquakes! Here’s an overview of an excellent new study from Lake Ozette in coastal Washington that details major (M8-9) earthquake recurrence along the Cascadia Subduction Zone in the Pacific Northwest. 🧪⚒️ www.usgs.gov/centers/pcms...

Just recovered the last of our instruments from the Washington shelf. We’ve been instrumenting 2 submarine canyons for the past year to examine the oceanographic triggers of sediment gravity flows and compare these with deposits from turbidity currents generated by #earthquakes. 🧪⚒️ #geohazards

Hey #AGU procrastinators! There’s still time to submit an abstract for our coastal, marine and lacustrine geohazards session! (The deadline has been extended to Monday, 8/5). 🧪⚒️ agu.confex.com/agu/agu24/pr...

We just wrapped up an excellent round of field work full of beautiful scenery and beautiful data in Prince William Sound, Alaska - mapping submarine landslides to investigate earthquake and tsunami hazards. This region saw major impacts in the 1964 M9.2 Great Alaska Earthquake. #USGS ⚒️🧪

We had a great time at #SSA in Anchorage this week with our Faults to Fjords onshore-offshore paleoseismology session and an amazing field trip to Prince William Sound, including an up close look at Barry Arm - an active landslide with a massive tsunami potential. ⚒️🧪

Today is the 60th anniversary of the 1964 M9.2 Great Alaska earthquake and tsunami. My wonderful colleagues put together a great set of video clips from the formation of a submarine landslide at Valdez. You can view the video here: youtu.be/1bv2GGjcfCY?... 🧪⚒️

We collect a lot of sediment cores offshore and in lakes to study coastal and marine geohazards like earthquakes, landslides and tsunamis. Ever wonder what happens to all that mud? Here’s a great video tour of our USGS PCMSC core lab in Santa Cruz: ow.ly/bja250QCQM1 🧪⚒️

A nice piece about some of the behind the scenes work our group does - data access for all!

This is a wow.