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.
New seafloor mapping offshore Alaska in the Alaska-Aleutian subduction zone! #USGS #NOAA #MarineGeohazards 🧪⚒️🌊
New seafloor mapping offshore Kodiak Island, Alaska, reveals extensive submarine landslides
In summer 2025, a research team led by the USGS worked with the NOAA ship Rainier to map a large swath of seafloor offshore of Kodiak Island, Alaska, along the Alaska-Aleutian Trench.
www.usgs.gov
August 29, 2025 at 1:17 AM
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! 🧪⚒️
Early View of Tracy Arm Landslide Features
YouTube video by Alaska Earthquake Center
youtu.be
August 15, 2025 at 1:26 AM
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! 🧪⚒️
Reposted by Jenna C. Hill
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...
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...
July 30, 2025 at 4:58 PM
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...
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:
July 30, 2025 at 2:36 AM
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 Ecosystems Office at USGS Alaska does important work for responsible resource development in Alaska & more people should know about their role in supporting our economy.
Their mission is worthy of continued federal funding
www.usgs.gov/centers/alas...
Their mission is worthy of continued federal funding
www.usgs.gov/centers/alas...
Q&A: The Role of USGS Ecosystems Science in Alaska
The USGS is the science arm of the Department of the Interior (DOI) with a mission to provide timely and impartial science information to decision-makers, industry, and others. Topics of USGS research...
www.usgs.gov
June 26, 2025 at 3:33 AM
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...
🧪⚒️
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...
🧪⚒️
🔊 Listen Now: This federal program helps track America's ecosystems. Trump's budget would gut it
All Things Considered on NPR One | 5:02
one.npr.org
June 20, 2025 at 4:39 PM
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...
🧪⚒️
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 🧪⚒️🌊
June 7, 2025 at 8:51 PM
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
Link to original video: youtu.be/77ubC4bcgRM
May 16, 2025 at 2:54 AM
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
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.
🧪⚒️🌊
Could be terrestrial (from ice age) or marine. 👽, 🐌, 💩 have all been suggested…
This sample is from the Bering Shelf in about 40m of water.
🧪⚒️🌊
May 1, 2025 at 11:21 PM
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.
🧪⚒️🌊
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 🧪⚒️🌊
🚨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....
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....
April 29, 2025 at 4:23 AM
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...
🧪⚒️🌊
www.usgs.gov/programs/cmh...
April 23, 2025 at 11:31 PM
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...
🧪⚒️🌊
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.
April 17, 2025 at 4:00 PM
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]
Download what you need asap and send comments to: [email protected]
Notice of Changes
Notices of changes are formal public announcements of planned services changes to applications and other products.
www.nesdis.noaa.gov
April 17, 2025 at 12:44 AM
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]
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...
Just published in Marine Geology: authors.elsevier.com/c/1kqiT5mVe1...
March 28, 2025 at 12:26 AM
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...
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. 🧪⚒️
March 22, 2025 at 2:36 AM
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
IYKYK…and if you don’t know these are old marine sediment cores with some famous names. #geologynerds
March 14, 2025 at 8:21 PM
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
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! 🤘🏻🤘🏻
They’ve arrived! Head over to www.src.com.au/product/seis... to get yours!
March 7, 2025 at 2:00 AM
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. 🧪⚒️
Lori Dengler | Big Cascadia anniversary: What we’ve learned and what we haven’t
Jan. 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…
www.times-standard.com
January 26, 2025 at 7:04 PM
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.
It’s awful to see the closing of another Geology department and big loss for the community.
January 25, 2025 at 6:52 PM
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.
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.
offshore and onshore observations in subduction zones to increase understanding of processes driving geohazards and communicating science to bolster societal resilience.
January 10, 2025 at 1:28 AM
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.
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_...
Here’s the #USGS livestream - there’s some impressive lava fountains: 🧪⚒️
www.youtube.com/live/w0KulR_...
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December 24, 2024 at 3:26 PM
🌋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_...
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.
My poster on Cascadia earthquake records from marine turbidites is #2484.
December 13, 2024 at 12:18 PM
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.
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)
Check out the teaser below and come see our posters if you are in town! PP23C-0564 to 0569 (Tuesday afternoon)
Bering Bog Bridge? New research rewrites key crossing’s landscape
New research finds Bering Land Bridge was boggy with meandering rivers, not an arid steppe as previously thought
news.agu.org
December 10, 2024 at 4:53 AM
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)
Check out the teaser below and come see our posters if you are in town! PP23C-0564 to 0569 (Tuesday afternoon)
Bering Bog Bridge? New research rewrites key crossing’s landscape
New research finds Bering Land Bridge was boggy with meandering rivers, not an arid steppe as previously thought
news.agu.org
December 9, 2024 at 2:53 PM
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)
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. 🧪⚒️
December 9, 2024 at 2:47 PM
#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. 🧪⚒️