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Renewable Gas
The author looks at the prospects for a transition from natural gas to low carbon gas, which could take several decades, and at how this will depend on the evolution of the fossil fuel industry. She investigates the technologies and energy systems for making the best use of renewable gas resources.
Woods Hole Currents
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Structure and Dynamics of the Benthic Boundary Layer Above the Hatteras Abyssal Plain
The structure of the near-bottom velocity and density fields was observed for 3 months with a fixed velocity/temperature measuring array on the Hatteras Abyssal Plain. The velocity signal was examined for structure coherent with the observed mixed layers. Velocity fluctuations above 1 cph increase in energy near the bottom, especially within bottom mixed layers. The frequency and energy of these fluctuations is consistent with the expected properties of boundary layer turbulence. The turbulence as measured by these velocity fluctuations, is modulated on tidal and inertial time scales and extends intermittently throughout the bottom mixed layer. The clockwise near inertial velocity fluctuatio...
Upper Cretaceous Coccoliths from Texas and Europe
"Electron microscopy reveals a great range of crystallite ultrastructure patterns in the calcite scales of the unicellular marine algae, Coccolithophyceae. These tiny scales, called coccoliths, have been found as fossils in strata as old as 180 million years (Early Jurassic). During the Late Cretaceous, Coccolithophyceae were especially abundant, and their coccoliths were important rock-building constituents. The extensive chalk deposits representing this epoch contain not only large numbers of coccoliths but also a great variety of species. Electron microscopy of samples from this interval reveals fossils of 172 species of Coccolithophyceae. Of these, 94 species are new. Of the 48 genera re...
