Past events

21
Nov
2018

A shifting paradigm: aeolian sedimentation and climate forcing in the Asian interior »

12pm 21 November 2018

Tibetan Plateau uplift has long been considered to be a main driving force for mid-latitude Asian inland aridity (AIA) and for deposition of thick aeolian sequences in northern China since the Miocene. However, a lack of well-dated and thick aeolian sequences has hindered testing of such relationships over longer...

15
Nov
2018

Studies of water on Earth and in the asteroid belt »

1pm 15 November 2018

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...

14
Nov
2018

Scale-aware, energetically consistent techniques for eddy-permitting ocean modelling - Scott Bachman (NCAR) »

2pm 14 November 2018

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...

14
Nov
2018

Development and application of the pH-alkalinity system to monitor ocean pH and alkalinity »

12pm 14 November 2018

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...

13
Nov
2018

Geostrophic turbulence and the formation of large scale structure - Edgar Knobloch (UC Berkeley) »

2pm 13 November 2018

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...

08
Nov
2018

Ocean Fertilization by Natural and Anthropogenic Nitrogen Input in the Past and Present »

1pm 8 November 2018

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...

07
Nov
2018

Evaluation of Australia as a major source of dust in the Southern Hemisphere »

12pm 7 November 2018

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...

31
Oct
2018

Weathering effects on seawater chemistry during the Neogene: evidence from foraminiferal Na/Ca and carbonate mass accumulation rates »

12pm 31 October 2018

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.

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