paleoceanography2
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Ancient Ocean Currents May Have Changed Pacing and Intensity of Ice Ages
Slowing of Currents May Have Flipped Switch, Says Study
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Lucky 13 Gets Us 250,000 Years of Sediment
We have been steaming and searching for locations on the seafloor where the sediments are accumulating undisturbed. We tried without luck to take cores at several promising locations, however the cores came up less than perfect. On our thirteenth core attempt of the cruise we got lucky.
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Drilling Ancient Mud from Seafloor No Easy Task
Yesterday we left our first study region with new samples from the seafloor and a healthy respect for the ocean currents that can erode sediment deep in the ocean. The seafloor we surveyed was heavily eroded and we had to look carefully before finding sites that were promising enough to try sampling. Even then we…
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Through the Looking Glass: Peering Through the Bottom of the Ocean
Alice stepped through the mirror to see the world beyond, and we peer through the bottom of the ocean to see what is below. Short pulses of sound from the ship are focused on the seafloor, and we listen to the echo and reverberations that return.
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Why I Care About the Bottom of the Ocean
It is the middle of the night and I am wide awake thinking about the ocean, specifically the bottom of the ocean. Is it rocky? Jumbled? Smooth? Rocky is bad. Jumbled is bad. Smooth is good.
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Ocean Acidification Rate May Be Unprecedented, Study Says
Few Parallels in 300-Million Year Geologic Record
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Earth Institute Announces 2009-2010 Marie Tharp Fellows
The Earth Institute at Columbia University is pleased to announce the 2009-2010 Marie Tharp Fellows — two women who are making noteworthy contributions to the fields of geochemistry and paleoceanography. The 2009-2010 Marie Tharp Fellows are: Kathy Licht, Associate Professor of Earth Sciences, Indiana University, and Laura Robinson, Assistant Scientist in Marine Chemistry and Geochemistry,…
