The Hawaiian Drowned #Reefs expedition was one of the coolest things #IODP did before the program ended. Now all the site reports and core descriptions are online.
(And I just need to get around to reading them)

... still sad I didn't get to join it.

Link: http://publications.iodp.org/proceedings/389/389title.html

Learned today:
Cement -making, which involves high heat, incurs 9% of the annual global CO2 emissions.
Roman #cement endured 2000 years, and counting.
"Ours" lasts merely 50-150 years.
Why is that?
Ours crumbles because little fissures are widened by rain water.
The Roman mix contains lotsa tiny calcium lumps. When fissures occur and rain enters them, it dissolves the calcium crumbs and this "dough" smears across the gaps. Case closed.

Heard in a curious podcast episode by a Noam Hassenfeld.

Also learned: when scientists drilled for sediment cores in 2022/2023 around Santorini and the submarine #volcano , the drill got stuck often, and 3 times, they had to use explosives to get it free. One reason: a Roman cement structure on the sea floor !
Thomas Ronge, cli-sci on this #IODP expedition, posted it yesterday on Bluesky.

Successful #SampleParty of #IODP Expedition 403 'Eastern Fram Strait Paleo-Archive': During the last two weeks, we had up to 38 scientists visiting the #BCR. All ∼22,500 sediment & rock samples have been taken and are ready to be shipped. Good job everyone!
More info about the IODP Expedition 403 here ➡️ https://iodp.tamu.edu/scienceops/expeditions/mediterranean_atlantic_gateway_exchange.html

@ECORD @unibremen #JoidesResolution

What was the cause of the great
#Tōhoku #earthquake of 2011, and how can we better understand geological processes in order to protect coastal infrastructure? 🌊#MARUM researchers look into these questions during an ongoing #IODP expedition ➡️ https://www.marum.de/en/JTrackExp405.html

#JAMSTEC
#CHIKYU