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Studies of water on Earth and in the asteroid belt »
It is increasingly accepted that the fast diffusion of water in glass renders measurements of melt inclusions suspect except in very small tephra. Therefore there is much interest in the use of water measurements in nominally anhydrous minerals such as clinopyroxene and application of a partition coefficient as...
Scale-aware, energetically consistent techniques for eddy-permitting ocean modelling - Scott Bachman (NCAR) »
Scale-aware, energetically consistent techniques for eddy-permitting ocean modelling Scott Bachman, National Center for Atmospheric Research (USA) Abstract: CMIP-scale ocean models are progressing ever further into a regime where the largest mesoscale eddies are...
Development and application of the pH-alkalinity system to monitor ocean pH and alkalinity »
Highly precise and accurate measurements of pH and alkalinity have become key scientific techniques to understand how rising anthropogenic CO2 emissions are affecting calcification processes on coral reefs. Hence to make high frequency (hourly) measurements of using the potentiometric method is time...
Geostrophic turbulence and the formation of large scale structure - Edgar Knobloch (UC Berkeley) »
Abstract: Low Rossby number convection is studied using an asymptotically reduced system of equations valid in the limit of strong rotation. The equations describe four regimes as the Rayleigh number, Ra increases: a disordered cellular regime near threshold, a regime of weakly interacting convective Taylor...
Ocean Fertilization by Natural and Anthropogenic Nitrogen Input in the Past and Present »
The availability of “fixed” nitrogen limits the growth of marine phytoplankton in large part of the ocean. It has been suggested that considerable changes in nitrogen inventory could occur in the recent past or in the future, which may change the fertilization of the ocean and drive significant changes in...
Evaluation of Australia as a major source of dust in the Southern Hemisphere »
Prof. Patrick De Deckker will present recent work on Australian dusts. This first part of my talk will provide an overview of the surficial geology of Australia with emphasis on regions from where dust can become deflated. This is important as previous studies ignored this aspect of the Australian regolith...
Weathering effects on seawater chemistry during the Neogene: evidence from foraminiferal Na/Ca and carbonate mass accumulation rates »
Yair Rosenthal (Dept. of Marine and Coastal Sciences, Rutgers) will be speaking about his work on the weathering effects on seawater chemistry during the Neogene using evidence from foraminiferal Na/Ca and carbonate mass accumulation rates.
Geologic History Of The Wyoming Province, One of the Oldest Fragments of Crust in the World »
The Wyoming province consists of Precambrian rocks that are exposed in the Laramide uplifts in the Rocky Mountains of Wyoming. The province records a long history with rocks dating back to 3.4 billion years ago (Ga) and xenocrystic zircon grains dating to ca. 3.9 Ga. Lu/Hf ratios on some of the xenocrystic...
