Jenna C. Hill

Jenna C. Hill

@chillocean.bsky.social

Marine Geologist w/USGS; likes to nerd out about marine geohazards, paleoclimate and seascape evolution; lover of dogs, soccer et al.

4K followers153 following142 posts

Jenna C. Hill
@chillocean.bsky.social

Love these fanquakes at the World Cup!! ⚽️🏆 Go Team USA 🇺🇸 !! On to the knockout rounds!

Pacific Northwest Seismic Network@pnsn1.bsky.social

“And the building shakes in Seattle!” PNSN’s seismic stations captured the crowd response to both Alex Freeman’s goal and the VAR decision overturning the offside call. It’s #USMNT 2 to Australia 0 at half-time. #WorldCup2026 #FIFAWorldCup #SportsSeismology

Jenna C. Hill
@chillocean.bsky.social

Some good news about OOI and for #Oceanography! 🧪🌊

nytimes.comTrump Administration Backs Off Plan to End Ocean Monitoring
Jenna C. Hill@chillocean.bsky.social

Wow. Dismantling the OOI arrays is a major loss for oceanography. 🧪🌊 oceanobservatories.org/2026/05/anno...

oceanobservatories.orgAnnouncement on NSF OOI Descoping - Ocean Observatories InitiativeThe U.S. National Science Foundation (NSF) has initiated descoping of the Ocean Observatories Initiative (OOI) Major Facility. This plan includes the removal of all in-water infrastructure from the Ir...
Jenna C. Hill
@chillocean.bsky.social

A great partnership leads to great science! 🧪⚒️🌊 Read our new paper here: www.science.org/doi/10.1126/...

MBARI@mbarinews.bsky.social

New research led by @chillocean.bsky.social and the USGS Pacific Coastal and Marine Science Center used MBARI’s technology to map the distribution of deposits left on the seafloor after an earthquake, revealing the seismic history of the Pacific Northwest. Learn more: www.mbari.org/news/mbaris-...

mbari.orgMBARI’s advanced underwater technology reveals history of earthquakes in the Pacific Northwest • MBARIA new research publication, led by the USGS Pacific Coastal and Marine Science Center, used MBARI’s advanced technology to map the distribution of deposits left on the abyssal seafloor after an earthq...
Jenna C. Hill
@chillocean.bsky.social

Our new paper on earthquake records in the Cascadia Subduction Zone is out today! The goal of our work is to reduce uncertainty in the timing and frequency of large earthquakes by investigating how and where subduction earthquake-triggered deposits are formed. 🧪⚒️🌊 www.science.org/doi/10.1126/...

science.orgWidespread abyssal turbidites record megathrust earthquake-triggered landslides and coseismic deformation in the Cascadia subduction zoneLower slope failures produce abyssal turbidites that record shaking and coseismic deformation during megathrust earthquakes.
Jenna C. Hill
@chillocean.bsky.social

Also, a big shout out to my #USGS and #MBARI colleagues! Collaborating on this project allows us to both work with a great team of scientists and provides access to cutting edge tools like @mbarinews.bsky.social AUVs and ROVs that offer unprecedented views of the deep seafloor. 🧪⚒️🌊

mbari.orgMBARI’s advanced underwater technology reveals history of earthquakes in the Pacific Northwest • MBARIA new research publication, led by the USGS Pacific Coastal and Marine Science Center, used MBARI’s advanced technology to map the distribution of deposits left on the abyssal seafloor after an earthq...
Jenna C. Hill
@chillocean.bsky.social

Our new paper on earthquake records in the Cascadia Subduction Zone is out today! The goal of our work is to reduce uncertainty in the timing and frequency of large earthquakes by investigating how and where subduction earthquake-triggered deposits are formed. 🧪⚒️🌊 www.science.org/doi/10.1126/...

science.orgWidespread abyssal turbidites record megathrust earthquake-triggered landslides and coseismic deformation in the Cascadia subduction zoneLower slope failures produce abyssal turbidites that record shaking and coseismic deformation during megathrust earthquakes.
View full thread
Jenna C. Hill
@chillocean.bsky.social

Overall, this study changes the focus of how the scientific community studies prehistoric earthquakes in a subduction zone, reduces the uncertainties in the timing and frequency of large subduction zone earthquakes, and offers new opportunities to develop global earthquake records.🧪⚒️🌊

Jenna C. Hill
@chillocean.bsky.social

This study is part of a much larger USGS effort to characterize geologic records of past earthquakes and reduce uncertainties in earthquake recurrence estimates that are used seismic hazard models. 🧪⚒️🌊 Read more about our project here: www.usgs.gov/centers/pcms...

usgs.govCascadia Subduction Zone Marine GeohazardsSocietal Issue: Uncertainty related to rupture extent, slip distribution, and recurrence of past subduction megathrust earthquakes in the Pacific Northwest (northern CA, OR, WA, and southern BC) leads...
Jenna C. Hill
@chillocean.bsky.social

Our new paper on earthquake records in the Cascadia Subduction Zone is out today! The goal of our work is to reduce uncertainty in the timing and frequency of large earthquakes by investigating how and where subduction earthquake-triggered deposits are formed. 🧪⚒️🌊 www.science.org/doi/10.1126/...

science.orgWidespread abyssal turbidites record megathrust earthquake-triggered landslides and coseismic deformation in the Cascadia subduction zoneLower slope failures produce abyssal turbidites that record shaking and coseismic deformation during megathrust earthquakes.
View full thread
Jenna C. Hill
@chillocean.bsky.social

We think these landslides, which happen on the steep base of continental slopes, are happening along subduction zones globally. This means we should be able to find similar landslide deposits and associated marine turbidites in many places around the world. 🧪⚒️🌊

Jenna C. Hill
@chillocean.bsky.social

We propose a new geologic model for subduction zone marine paleoseismology that emphasizes uplift & recycling of the abyssal seafloor. Accretion and oversteepening on the lower slope sets the stage for landslides and provides a perpetual source of material to fail during each earthquake cycle. 🧪⚒️🌊

Jenna C. Hill
@chillocean.bsky.social

Our new paper on earthquake records in the Cascadia Subduction Zone is out today! The goal of our work is to reduce uncertainty in the timing and frequency of large earthquakes by investigating how and where subduction earthquake-triggered deposits are formed. 🧪⚒️🌊 www.science.org/doi/10.1126/...

science.orgWidespread abyssal turbidites record megathrust earthquake-triggered landslides and coseismic deformation in the Cascadia subduction zoneLower slope failures produce abyssal turbidites that record shaking and coseismic deformation during megathrust earthquakes.
View full thread
Jenna C. Hill
@chillocean.bsky.social

Our results show the links landslide scars on the lower slope, large debris deposits and abyssal turbidites. By clarifying how and where earthquake triggered turbidites are generated, our results improve confidence in using these deposits to reconstruct long-term earthquake histories. 🧪⚒️🌊

Jenna C. Hill
@chillocean.bsky.social

The punctuated timing of these underwater landslides also suggests evidence for seafloor movement during large earthquakes, similar to what was observed during the 2011 Tohoku earthquake and tsunami in Japan. If this were to happen in Cascadia, it could enhance tsunami hazards across the region. 🧪⚒️🌊

Jenna C. Hill
@chillocean.bsky.social

Our new paper on earthquake records in the Cascadia Subduction Zone is out today! The goal of our work is to reduce uncertainty in the timing and frequency of large earthquakes by investigating how and where subduction earthquake-triggered deposits are formed. 🧪⚒️🌊 www.science.org/doi/10.1126/...

science.orgWidespread abyssal turbidites record megathrust earthquake-triggered landslides and coseismic deformation in the Cascadia subduction zoneLower slope failures produce abyssal turbidites that record shaking and coseismic deformation during megathrust earthquakes.
Jenna C. Hill
@chillocean.bsky.social

Our research team from USGS & MBARI used autonomous underwater& remotely operated vehicles to collect detailed seafloor bathymetry, sediment cores and subbottom data. Together, these data allow us to examine the shape of the seafloor and the layers of sediment beneath that record earth history. 🧪⚒️🌊

Jenna C. Hill
@chillocean.bsky.social

Our study shows that large megathrust earthquakes generate widespread landslides on the seafloor, with characteristic deposits called turbidites that can reliably be used to reconstruct earthquake history. 🧪⚒️🌊 Check out this USGS video describing our new findings:

Jenna C. Hill
@chillocean.bsky.social

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. 🧪⚒️

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Jenna C. Hill
@chillocean.bsky.social

“NPR reached out to the Office of Management and Budget to confirm the planned cut. In an email, a spokesperson replied, the EMA is, quote, "obviously irrelevant to science and is exactly the kind of waste President Trump ran on rooting out of the federal government."” 🧪⚒️

Jenna C. Hill
@chillocean.bsky.social

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

youtu.beFirst fault rupture ever filmed: M7.9 surface rupture filmed near Thazi, MyanmarYouTube video by 2025 Sagaing Earthquake Archive
Henning@geohenning.bsky.social

This is a photo of the surface rupture we saw in the webcam footage of the Myanmar #earthquake. The webcam was positioned on the opposite side behind the gate. Source is the YouTube channel that also posted the footage. 🧪⚒️ youtube.com/@sagaingeart...

Jenna C. Hill
@chillocean.bsky.social

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. 🧪⚒️🌊

Jenna C. Hill
@chillocean.bsky.social

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

Tina Dura@diatomdura.bsky.social

🚨New Study Alert!🚨 Our new PNAS study shows how earthquake-driven land subsidence + rising seas = major flood hazards along the Cascadia subduction zone. 🌊🌎 @cascadiaeqs.bsky.social (1/🧵) www.pnas.org/doi/epdf/10....

Jenna C. Hill
@chillocean.bsky.social

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.

geosamples.orgSESAR2Welcome to the System For Earth Sample Registration (SESAR²) An Allocating Agent for IGSN
Jenna C. Hill@chillocean.bsky.social

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: ncei.info@noaa.gov

nesdis.noaa.govNotice of ChangesNotices of changes are formal public announcements of planned services changes to applications and other products.
Jenna C. Hill
@chillocean.bsky.social

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. 🧪⚒️

Jenna C. Hill
@chillocean.bsky.social

Arnold Bouma is known for the Bouma Sequence (a characteristic set of sedimentary structures deposited by a turbidity current) and Monty Hampton did a lot of pioneering work on submarine landslides.

Jenna C. Hill
@chillocean.bsky.social

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. 🧪⚒️

times-standard.comLori Dengler | Big Cascadia anniversary: What we’ve learned and what we haven’tJan. 26, 2025, marks 325 years since the last great earthquake on the Cascadia subduction zone. It’s a time to reflect on what we’ve learned about this largest fault system in the lower 48 states a…
Jenna C. Hill
@chillocean.bsky.social

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.

Jenna C. Hill
@chillocean.bsky.social

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.

Jenna C. Hill
@chillocean.bsky.social

Key themes included: - Building trust: increasing societal resilience to geohazards takes time - Climate change amplifies cascading and compounding hazards -Integrating more observational data with geophysical models can lead to discovery