Sascha Flögel


Dr. rer. nat. Sascha Flögel

Forschungsbereich 1: Ozeanzirkulation und Klimadynamik
FE Paläo-Ozeanographie
Forschungsbereich 2: Marine Biogeochemie
FE Marine Geosysteme

Room: 8/C-105
Phone: +49 431 600-2312
Fax: +49 431 600-2925
Email: sfloegel(at)

Wischhofstrasse 1-3
D-24148 Kiel


Research Interests

Numeric modeling

My research focuses on the use of numerical climate and biogeochemical models (full coupled GCMs, earth system models of intermediate complexity, and biogeochemical box models) in global and regional climate research. Covering geological, present day, and future time scales I investigate the role of global biogeochemical cycling of C, P, O2, ... and the terrestrial hydrological cycle on e.g. marine nutrient inventories, ventilation of the water column. Most of my research is dedicated to times of global warmth, e. g. greenhouse climates where I currently work on the underlying orbital and biogeochemical cycles that lead to the development of Oceanic Anoxic Events (OAEs). The understanding of processes ‘unique’ to greenhouse climates is of great interest for insights into past and future climate change. Currently, we’re coupling and running biogeochemical box models to a GCM to investigate marine oxygen concentrations during OAEs in the Cretaceous.
Another focal point of my research is the influence of orbital cycles, so-called Milankovitch cycles on Earth’s climate and sedimentation patterns during the geological past.

Cold-water corals

A second topic of my current research is the growth and distribution of cold-water corals (e.g. Lophelia pertusa) and their relation to the hydrographic regime of the ambient water masses. Therefore, we use state-of-the-art marine stand-alone observatories to conduct long-term measurements of various physical and biogeochemical parameters in bottom waters and throughout the water column in multiple ocean basins.

Selected Publications

Articles in Peer Reviewed Journals


Flögel, S., Rüggeberg, A., Mienis, F. and Dullo, W-Chr. (2013): Geochemical and physical constraints for the occurrence of living cold-water corals. Deep-Sea Research I. doi: 10.1016/j.dsr2.2013.06.006.

McAnena, A., Flögel, S., Hofmann, P., Herrle, J.O., Griesand, A., Pross, J., Talbot, H.M., Rethemeyer, J., Wallmann, K. and Wagner, T. (2013): Atlantic ocean cooling and marine biotic crisis in the mid-Cretaceous. Nature Geosciences, doi: 10.1038/NGEO1850.

Lorenzen, J., Kuhnt, W., Holbourn, A., Flögel, S., Moullade, M. and Tronchetti, G. (2013): A new sediment core from the Bedoulian (Lower Aptian) stratotype at Roquefort-La Bédoule, SE France. Cretaceous Research, doi:10.1016/j.cretres.2012.03.019.

Wagner, T., Hofmann, P. and Flögel, S. (2013): Marine black shale deposition and Hadley Cell dynamics: A conceptual framework for the Cretaceous Atlantic Ocean. Marine Petroleum Geology.

Bahr, A., Schönfeld, J., Hoffmann, J., Voigt, S., Aurahs, R., Kucera, M., Flögel, S., Jentzen, A. and Gerdes, A. (2013): Comparison of Ba/Ca and as freshwater proxies: A multi-species core-top study on planktonic foraminifera from the vicinity of the Orinoco River mouth, Earth and Planetary Science Letters, 383, 45-57, doi: 10.1016/j.epsl.2013.09.036.


Hay, W.W. and Flögel, S. (2012): New Thoughts about the Cretaceous Climate and Oceans. Earth Science Reviews,

López Correa, M., Montagna, P., Joseph, N., Rüggeberg, A., Fietzke, J., Flögel, S., Dorschel, B., Goldstein, S.L., Wheeler, A. and Freiwald, A. (2012): Preboreal onset of cold-water coral growth beyond the Arctic Circle revealed by coupled radiocarbon and U-series dating and neodymium isotopes, Quaternary Science Reviews, doi:10.1016/j.quascirev.2011.12.005.


Flögel, S., Wallmann, K., Poulsen, C. J., Zhou, J., Oschlies, A., Voigt, S. and Kuhnt, W. (2011): Simulating the biogeochemical effects of volcanic CO2 degassing on the oxygen-state of the deep ocean during the Cenomanian/Turonian Anoxic Event (OAE2). Earth and Planetary Science Letters 305, 371-384, doi:10.1016/j.epsl.2011.03.018.

Flögel, S., Wallmann, K. and Kuhnt, W. (2011) Cool episodes in the Cretaceous –
exploring the effects of physical forcing on Antarctic snow accumulation. Earth and Planetary Science Letters 307, 279-288.

Flögel, S. and Dullo W.-Chr. (2011): High resolution water mass measurements around cold-water corals: a comparative test study between repeated Conductivity-Temperature-Depth (CTD) casts and continuous data acquisition of bottom waters from the West Florida Slope, Gulf of Mexico. Annalen des Naturhistorischen Museums in Wien, Serie A 113, 209-224.

Schönfeld, J., Dullo, W.-Chr. and Flögel, S. (2011): Surface and Intermediate Water hydrography, planktonic and benthic biota in the Caribbean Sea - Climate, Bio and Geosphere linkages (OPOKA). Cruise No. 78, Leg 1, February 22 – March 28, 2009, Colón (Panama) - Port of Spain (Trinidad and Tobago). Meteor-Berichte 11-6, 40 pp., Senatskommission für Ozeanographie der Deutschen Forschungsgemeinschaft, MARUM, Bremen.


Flögel, S., Parkin, G., Pollard, D., Dullo, W.-Chr. and Wagner , T. (2010): Simulating zonal scale shifts in the partitioning of surface and subsurface freshwater flow in response to increasing pCO2. Climate Dynamics, doi:10.1007/s00382-010-0929-5.

Flögel, S., Moullade, M. and Kuhnt, W. (2010): Drilling of Early Cretaceous Oceanic Anoxic Event 1a in Southern France. Scientific Drilling, No. 9, 20-22.

Rüggeberg, A. Flögel, S., Dullo, W.-Chr., Hissmann, K. and Freiwald, A. (2010):
Water mass characteristics and sill dynamics in a subpolar cold-water coral reef setting at Stjernsund, northern Norway. Marine Geology, doi:10.1016/j.margeo.2010.05.009.

Hübscher, C., Dullo, W.-Chr., Flögel, S., Titschack, J. and Schönfeld, J. (2010): Contourite drift evolution and related coral growth in the eastern Gulf of Mexico and its gateways. International Journal of Earth Sciences. doi:10.1007/s00531-010-0558-6.


Sommer, S. Linke P., Pfannkuche O., Schleicher T., Schneider v. Deimling J., Reitz A., Haeckel M., Flögel S. and Hensen C. (2009): Sea bed methane emissions and the habitat of frenulate tubeworms on the Captain Arutyunov mud volcano (Gulf of Cadiz). Marine Ecological Progress Series. Vol. 382: 69–86, doi: 10.3354/meps07956.


Flögel, S., Beckmann, B., Hofmann, P., Bornemann, A., Westerhold, T., Norris, R. D. and Wagner, T. (2008): Evolution of tropical watersheds and continental hydrology during the Late Cretaceous greenhouse; impact on marine carbon burial and possible implications for the future. Earth and Planetary Science Letters, doi: 10.1016/j.epsl.2008.06.011.

Dullo, W-Chr., Flögel, S. and Rüggeberg, A. (2008): Cool water coral growth in relation to the hydrography of the Celtic and Nordic European Continental Margin. Marine Ecological Progress Series. doi: 10.3354/meps07623.


Floegel, S. and Wagner, T. (2006): Insolation-control on the Late Cretaceous hydrological cycle and tropical African climate – global climate modelling linked to marine climate records. Palaeogeography, Palaeoclimatology, Palaeoecology, 235, 288-304.

Hay, W. W., Migdisov, A., Balukhovsky, A. N., Wold, C. N., Flögel, S. and Söding, E. (2006): Evaporites and the salinity of the ocean during the Phanerozoic: Implications for climate, ocean circulation and life. Palaeogeography, Palaeoclimatology, Palaeoecology, vol. 240, 1-2, 3-46.


Beckmann, B., Flögel, S., Hofmann, P., Schulz, M. and Wagner, T. (2005): Upper Cretaceous African climate development and implications for the marine carbon cycle. Nature, 437, 241-244, doi:10.1038/nature03976.

Floegel, S., Hay, W. W., DeConto, R. M. and Balukhovsky, A. N. (2005): Formation of sedimentary bedding couplets in the Western Interior Seaway of North America – Implications from Climate System Modeling. Palaeogeography, Palaeoclimatology, Palaeoecology, vol. 218, 1-2 , 125-143.

Hay, W. W., Flögel, S. and Söding, E. (2005): Is the initiation of glaciation on Antarctica related to a change in the structure of the ocean? Global and Planetary Change, 45, 1-3, 23-33.


Voigt, S., Flögel, S. and Gale, A. (2004): Midlatitude shelf seas in the Cenomanian-Turonian greenhouse world: Temperature evolution and North Atlantic circulation. Paleoceanography, vol. 19, PA4020, 1-17.


Mutterlose, J., Brumsack, H., Floegel, S., Hay, W. W., Klein, C., Langrock, U., Lipinski, M., Ricken, W., Söding, E., Stein, R. and Swientek, O. (2003): The Greenland-Norwegian Seaway: a key area for understanding Late Jurassic to early Cretaceous paleoenvironments. Paleoceanography, vol. 18, no. 1, 1010.

Articles in Edited Volumes/Books


Dullo, W.-Chr., Flögel, S. und Rüggeberg, A. (2011): Korallen - verborgene Ästhetik an den Kontinentalrändern un den Tiefen der Meere 25 Jahre FS METEOR : Ein Forschungsschiff und seine Geschichte(n). Hauschild, Bremen, pp. 103-107.

Klages, M. and Thiede, J. (2011): The expedition of the research vessel "Polarstern" to the Arctic in 2007 (ARK-XXII/1a-c) / Ed. by Michael Klages & Jörn Thiede with contributions of the participants / J. Thiede (editor), Berichte zur Polar- und Meeresforschung (Reports on Polar and Marine Research), Bremerhaven, Alfred Wegener Institute for Polar and Marine Research, 627 , 243 p., ISSN: 1866-3192 .


Schönfeld, J., Dullo, W.-Chr. and Flögel, S. (2010): Ölaustritte - Schädigung der Tiefsee. -- In: Söding, E., Balzereit, F. &  Schäfer, K. (Eds.): Die Ölkatastrophe im Golf von Mexiko - was bleibt?, pp. 32-33; Exzellenzcluster “Ozean der Zukunft", Christian - Albrechts - Universität zu Kiel, http:// user_upload/pdf/FO_GOM_Kommentare_v1.pdf.


Pfannkuche, O., Bannert, B., Beck, T., Beuck, L., Dullo, W.-Chr., Flögel, S., Freiwald, A., Gass, S., Gektidis, M., Heger, A., Jamieson, A., Kavanagh, F., King, N., Kuhanec, B., Linke, P., Martin, B., Neulinger, S., Noe, S., Queisser, W., Rüggeberg, A., Ruseler, S., Schiemer, I., Schmidt, S., Schönfeld, J., Taviani, M., Türk, M., Vertino, A. und Wigham, B. (2004): Geo-Biological Investigations on Azooxanthellate Cold-Water Coral Reefs on the Carbonate Mounds Along the Celtic Continental Slope Meteor-Berichte, 06-2.


Hay, W. W., Wold, C. N., Floegel, S. and Soeding, E. (2001): Evolution of sediment fluxes and ocean salinity. In: Geologic and Simulation: Sedimentary Systems, Merriam, D. F. and Davis, J. C., eds., Kluwer Academic/Plenum Publishers, New York, U. S. A., 153-167.

Complete list of publications in OceanRep