Earth Sciences66
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All I Wanted for Christmas Was for These Pumps to Work
We’ve just completed our first full station and are remarkably pleased with the results. We collected 8 seawater samples to measure helium isotopes; 20 to measure thorium and protactinium isotopes; 7 in-situ pump filters; 1 box core of the ocean floor; and more.
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Doing Science When There’s No Science to Be Done
With an abundance of time and a dearth of work, we have begun to devise ways of doing science before we can actually do science at sea. Among other things, we set up an imaging system to take pictures of particle filters we bring back from the deep sea.
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Electoral Politics and Environmental Sustainability
The political consensus for sustainability that could emerge might be based on increased funding for the science of renewable energy, battery technology, energy efficiency and smart grids. It could also include incentives for private sector investment to commercialize new energy technologies, and tax expenditures that make it easier for consumers to adopt these new technologies.
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Day 2: What Am I Doing Here, Anyway?
The South Pacific Gyre is the most nutrient-poor region in the ocean, and the waters are the clearest in the ocean. The sediments accumulate below the water at rates as low as 0.1 millimeter per thousand years. So, 10 centimeters of seafloor are equivalent to one million years of material deposition in the South Pacific.
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Detecting Landslides from a Few Seismic Wiggles
Over the last six years, seismologists Göran Ekström and Colin Stark have been perfecting a technique for picking out the seismic signature of large landslides. They just discovered North America’s largest known landslide in many years – 200 million tons of sliding rock in Alaska.
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Setting Sail? Plan for the Unexpected
In the weeks before departing for my first scientific cruise, everyone I knew who had ever been to sea gave me some form of the same advice: Nothing ever works the way you expect it to work at sea.
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Testing the Speed of Lava: What It Says about Escape Times & Mars
Elise Rumpf’s lava flow simulations are yielding new details about the velocity of lava over different surfaces. They may also hold clues about the surfaces of other planets.
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Catch Up on the Latest in Earth Science with AGU Sessions Live Online
The American Geophysical Union’s Fall Meeting opens in San Francisco this week. Catch up on your interests through AGU’s On-Demand live stream.
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Using LiDAR to Shine a Light on Ross Ice Shelf
LiDar (Light Detection and Ranging) is a remote sensing technique that uses light to develop an elevation image of the surface of the Earth. It is sensitive enough to image small items such as seals lying on the ice surface.
By studying thousands of buildings and analyzing their electricity use, Columbia Climate School Dean Alexis Abramson has been able to uncover ways to significantly cut energy consumption and emissions. Watch the Video: “Engineering a Cooler Future Through Smarter Buildings“
