Education:
B. S. Chemistry, University of Wisconsin-Milwaukee, 1974
M. S. Oceanography, University of Washington, 1977
Ph.D. Oceanography, University of Washington, 1981
Research Interests, Projects, Committees:
Associate Editor, Continental Shelf Research
Chair, Coastal Ocean Processes Program (CoOP) Scientific Steering Committee
Member, Observatory Steering Committee, ORION Program
Member, NOAA Global Carbon Science Panel
Member, US Carbon Cycle Science Advisory Committee
Interim Program Director, ORION Program Office, 2005
Chair, Permeable Sediments special session at ASLO summer meeting in Savannah, GA, June 2004.
Chair, inaugural Gordon Research Conference on Permeable Sediments , June 2003.
Research interests include the study of sediment chemical, biological and physical processes that control the chemistry of benthic and marine systems. More information and recent research results are available on the Jahnke lab webpage .
Recent Courses Taught:
Contaminated Sediment Geochemistry - CE8103H Georgia Institute of Technology/GTREP and GEOL8020 University of Georgia
Marine Sediment Diagenesis - MAR811 University of Georgia
Selected Publications:
Jahnke, RA (in press) A Global Synthesis, in Carbon and Nutrient Fluxes in Continental Margins: A Global Synthesis , KK Liu, L Atkinson, R Quinones and L Talaue-McManus, eds. Global Change: The IGBP Series, Springer-Verlag.
Rao, AMF , MJ McCarthy, WS Gardner and RA Jahnke (2007) Respiration and denitrification in permeable continental shelf deposits on the South Atlantic Bight: Rates of carbon and nitrogen cycling from sediment column experiments. Continental Shelf Research 27 :1801-1819.
Jahnke, R , M Richards, J Nelson, C Robertson, A Rao and D Jahnke (2005) Organic matter remineralization and porewater exchange rates in permeable South Atlantic Bight continental shelf sediments. Continental Shelf Research 25 :1433-1452.
Jahnke, RA (2005) Transport processes and organic matter cycling in coastal sediments, In: The Sea, volume 13; The Global Coastal Ocean Multiscale Interdisciplinary Processes . AR Robinson and KH Brink (eds.) Harvard University Press, pp.163-191.
Jahnke, RA and DB Jahnke (2004) Calcium carbonate dissolution in deep sea sediments: Reconciling microelectrode, pore water and benthic flux chamber results. Geochimica et Cosmochimica Acta 68 :47-59.
Jahnke, RA, CR Alexander and JE Kostka (2003) Advective pore water input of nutrients to the Satilla River Estuary, Georgia, USA. Estuarine, Coastal and Shelf Science 56 :641-653.
Niencheski, LF and RA Jahnke (2002) Benthic respiration and inorganic nutrients in the estuarine region of Patos Lagoon (Brazil). Aquatic Geochemistry 8 :135-152.
Rubin, SI, SL King, RA Jahnke and PN Froelich (2002) Benthic barium and alkalinity fluxes: Is Ba an oceanic paleo-alkalinity proxy for glacial atmospheric CO 2 ? Geophysical Research Letters 30 :doi:10.1029/2003GL017339.
Jahnke, RA and DB Jahnke (2000) Rates of C, N, P and Si recycling and denitrification at the U. S. mid-Atlantic continental slope depocenter. Deep-Sea Res. 47 :1405-1428.
Jahnke, RA, JR Nelson, RL Marinelli and JE Eckman (2000) Benthic flux of biogenic elements on the southeastern U. S. continental shelf: Influence of pore water advective transport and benthic microalgae. Cont. Shelf Res. 20 :109-127.
Jahnke, RA (1998) Geochemical impacts of waste disposal on the abyssal seafloor. J. Mar. Sys. 14 :355-375.
Jahnke, RA, DB Craven, DC McCorkle and CE Reimers (1997) CaCO 3 dissolution in California continental margin sediments: the influence of organic matter remineralization. Geochim. Cosmochim. Acta 61 :3587-3604.
Jahnke, RA (1996) The global ocean flux of particulate organic carbon: areal distribution and magnitude. Global Biogeochem. Cycles 10 : 71-88.
Jahnke, RA and DB Craven (1995) Quantifying the role of heterotrophic bacteria in the carbon cycle: a need for respiration rate measurements. Limnol. Oceanogr. 40 :436-441.
Adjunct Faculty Positions:
Georgia Institute of Technology and the University of Georgia.
