Tags: Seminars

The oceanic DOC pool is comparable to the carbon inventory in both atmospheric CO2 and in the total biomass on earth. It’s reactivity, defined by its timescale of oxidation, reflects the complexity of this massive carbon pool and forms a continuum from labile, semi-labile, to refractory carbon constituents. Our studies using HOOH and O2- proxies, as well as novel direct measurements of CO2 photoproduction demonstrate that the capacity for DOM…

ABSTRACT:  Previous work on the Georgia, USA coast revealed consistent mid-summer peaks in the abundance of Thaumarchaeota accompanied by spikes in nitrite concentration.  We collected data on the distribution of Thaumarchaeota, ammonia-oxidizing Betaproteobacteria (AOB), nitrite-oxidizing Nitrospina, environmental variables and rates of ammonia oxidation during 6 cruises in the South Atlantic Bight from April to November 2014 to evaluate the…

Submarine groundwater discharge (SGD) is a process defined as any and all input of water into a surface water body through the sediment - water interface, independent of the driving force, and the fluid source and composition. Historically, the report of the existence of SGD dates back many centuries, when a submarine spring 2.5 miles offshore from Latakia, Syria, in the Mediterranean Sea was described. Other historical records focus on the…

Please join us for the 2017 Research Symposium on June 1-2 at the Graduate Hotel in Athens, Ga. The symposium will highlight Georgia Sea Grant’s research program, where Sea Grant-funded scientists from across the state will share their research findings. A reception will follow. On day two, prospective researchers are invited to a workshop where we will provide an overview of our FY2018-2020 call of proposals and give tips and advice about…

The purpose of this seminar is to begin with a general overview of the shelf and end with the carbonate reefs.  

About the presentation: "The presentation is organized as follows. At first, the experimental works I carried out during my PhD studies to explore tide-driven influential parameters on sediment transport in Ota Diversion Channel, Hiroshima, Japan, are briefly described. This part mainly discusses the application of conventional acoustic systems, their abilities, and challenges that inspired me to start working on Shallow Acoustic Tomography…

Mixing by turbulent motions in the ocean is important for global ocean circulation, nutrient supply to surface waters, and the global ocean heat budget. Turbulent mixing takes the form of a diffusive process where the vertical flux is proportional to the concentration gradient with an eddy diffusivity coefficient, Kz, as a constant of proportionality. Osborn (1980) suggested that Kz is in turn related to the flux Richardson number (Rif) or…