Chemistry Paleoceanography
Where do diatoms hide their silver?
Where would you hide your silver? Diatoms like to hide their silver in their squishy insides.
Category: Paleoceanography
Paleoceanography
Ocean oxygen levels were controlled by plate tectonics during the Phanerozoic Eon
Pohl, A., Ridgwell, A., Stockey, R.G. et al. Continental configuration controls ocean oxygenation during the Phanerozoic. Nature 608, 523–527 (2022). https://doi.org/10.1038/s41586-022-05018-z ************************************ …
Paleoceanography
Tipping the iceberg: How Antarctic icebergs influence climate
Citation: Starr, A., et al. (2021). Antarctic icebergs reorganize ocean circulation during Pleistocene glacials. Nature,589(7841). https://doi.org/10.1038/s41586-020-03094-7 Ice ages have…
Climate Change Paleoceanography
Can clays from northern Canada provide a 3,000-year temperature record of the Atlantic Ocean?
A sediment record from a lake in northern Canada is being used to reconstruct Atlantic Ocean temperatures at a resolution…
Paleoceanography
How much heat is stored in the oceans: Insights from ice cores
Reviewing: Shackleton, S., et al. “Global ocean heat content in the Last Interglacial.” Nature geoscience 13.1 (2020): 77-81. DOI: https://doi.org/10.1038/s41561-019-0498-0 Water…
Biogeochemistry Paleoceanography Physical oceanography Sea Ice
Key Role of Sea Ice in Glacial Cycles
A recent study using an idealized model finds that changes in Antarctic sea ice and circulation, triggered by atmospheric cooling,…
Paleoceanography
Marine Snow & Muddy Megacoring on the Southern Ocean
Check out this guest post by Marlo Garnsworthy to read about an exciting voyage to the Southern Ocean...Marlo took part…
Paleoceanography
The Once and Future Ocean
A newly collected sediment core from the Labrador Current gave Dr. Harunur Rashid a glimpse of the ancient ocean. What…
Paleoceanography
Paleoshorelines: Time capsules of the ocean’s ancient shorelines
In celebration of World Ocean’s Week, let’s take a moment to think about how far we have come in discovering…
Chemistry Climate Change Paleoceanography
The Bipolar See-Saw: Dansgaard-Oeschger Events and the Antarctic Climate
Within large timescales of glacial and interglacial periods, mini, rapid climate shifts may occur thanks to oceanic circulation processes and…
Biology Book Review Geology Glaciers Paleoceanography
Glaciers have big league role in silica budget.
Glaciers get a lot of attention because they’re expansive sheets of ice. They’re important to understand because they can impact…
Behavior Biological oceanography Biology Climate Change Developmental Biology Ecology Genetics geochemistry Geology Microbiology Ocean Acidification Paleoceanography Volcanoes
Sharkcano, a melting pot for biology
No, a Sharkcano is not a volcano that erupts sharks. IT IS WAY COOLER THAN THAT! It is a submarine…
Book Review Geology Paleoceanography
Mediterranean Magnetism shows Ancient Oceanic Crust
Compared to the continents, oceanic crust is relatively young, less than 200 million years. But in a corner of the…
Paleoceanography
Can bumps in the seafloor explain glacial-interglacial cycles?
The best scientific theories bring lots of things together in unexpected ways. This one has ice ages, seafloor volcanoes, sea…
Paleoceanography technology
Paleo-oceanography from satellite data reveal ancient tsunamis…on Mars?!
Extraplanetary tsunamis. Need I say more?
Paleoceanography
Tiny shells tell the history of Antarctic ice
Over the past 10,000 years, the West Antarctic Ice Sheet has gone through long periods of growth and long periods…
Geology Paleoceanography Sea-level Rise
The Down, Up, and Down Again of Chesapeake Bay
The Chesapeake Bay region is a densely populated area, and also experiences more rapid sea level rise than anywhere else…
Climate Change Human impacts Paleoceanography
CSI Holocene: Who started the fire?
Sediment and ice cores suggest that peaks in fire activity that happened 2,500 years ago in Europe was likely caused…
Climate Change geochemistry Paleoceanography
Balancing Act: Marine Sediments Reveal Past Carbon Cycle Fluxes
Researchers conducted a study that looks at marine sediment records to investigate sediment weathering patterns over long-term climate cycles. Somewhat…
Chemistry Climate Change Ocean Acidification Paleoceanography
Path of Corrosion: How Scientists Modeled Ancient Sea-Floor Acidity
Today, we see a rapid release of CO2 to the atmosphere associated with climate change. The same was true 55…