Stable isotopes as proxies for major ocean-changing events, both on the geologic time scale and modern settings.
1) Reconstruction of initial Laurentide Ice Sheet ablation based on a high-resolution Mg/Ca-SST and δ18O seawater (corrected temperature and ice-volume) record in Orca Basin, northern Gulf of Mexico, recorded in Globigerinoides ruber (pink, and white varieties).
2) Comparison of early LIS ablation records to reconstructions of warming/ablation records from Antarctica and Greenland (high-latitude), and smaller mountain glaciers (30-47° North and South, mid-latitude) on the same time scale.
3) Assessing the impacts of the Deepwater Horizon blowout on benthic communities in the West Florida Shelf, based on δ13C and δ18O in benthic foraminifera (Cibicidoides, Uvigerina, Hoeglundina, Osangularia).
4) Experimental comparison of G. ruber white morphotypes (Sensu stricto and senseu lato), exploring potential differences in Mg/Ca ratios.
Publications & Presentations
Brown, E.A., Flower, B.P., Williams, C., and Goddard, E. (2011). “Early Deglacial Laurentide Ice Sheet Meltwater Dynamics Explored from the Northern Gulf of Mexico.” AGU, Fall Meeting, Session PP13. Poster Presentation.
Flower, B.P., Williams, C., Brown, E.A., Hastings, D.W., Hill, H.W., Adams, C.S., Hendrix, J., Martin, E.E., Biller, N., and Goddard, E. (2011). “Gulf of Mexico climate and Laurentide Ice Sheet meltwater history during the last glacial cycle.” AGU Fall Meeting, Session PP13. Poster Presentation (in preparation).
Hollander, D., Peebles, E., Paul, J., Flower, B.P., Coble, P., Weisberg, R., Daly, K., Torres, J., Ellis, E., Goddard, E., Larson, R., Abercrombie, M., and Brown, E.A. (2011). “Fate and Impact of Toxic Oils Released into the Northern Gulf of Mexico: Ongoing Chemical, Biological and Geological Perspectives of the Deepwater Horizon Catastrophe.” Changing Seas series, Smithsonian Institution. Oral presentation.
Brown, E.A., Flower, B.P., and Williams, C. (2010), “Initial deglaciation of the Laurentide ice sheet based on Gulf of Mexico sediments,” Eos Trans. AGU, 91(52), Fall Meeting, Abstract PP33B-1668. Poster Presentation.
Flower, B.P., Williams, C., Brown, E.A., Hastings, D.W., Hendricks, J., and Goddard, E. (2010). “Laurentide Ice Sheet meltwater and the Atlantic meridional overturning circulation since the last glacial maximum: A view from the Gulf of Mexico.” Eos Trans. AGU Fall Meeting, Abstract PP33B-1699. Poster Presentation.
Brown, E.A., Cheney, J.T., and Harms, T.A. (2008). “Metamorphism and P-T path of garnet-sillimanite-biotite migmatites, Highland Mountains, Montana.” GSA, Northeastern Section 39(7). Poster Presentation.
West Florida shelf, Gulf of Mexico (May 2011): RV Weatherbird II
Collected water samples, plankton tows and sediment cores at sites previously sampled following the blowout of the Deepwater Horizon wellhead, to analyze ongoing impacts to the water column and benthic communities in the aftermath of the oil spill. Principle Investigator: Dr. Sue Murasko.
West Florida shelf, Gulf of Mexico (November 2010): RV Weatherbird II
Collected water samples, plankton tows and sediment cores at both contaminated and uncontaminated sites following the blowout of the Deepwater Horizon wellhead. Principle Investigator: Dr. Benjamin P. Flower
West Florida shelf, Gulf of Mexico (October 2009): RV Bellows
Principle Investigator: Dr. Mya Breitbart