Maren Walter

Tel: +49 (0)421 218-62147
Fax: +49 (0)421 218-62165
Email: [at]

Maren Walter

Research Interests

internal waves and mixing
physical oceanography of hydrothermal vents
ocean circulation
deep water formation and spreading
measurements of ocean currents with acoustic methods
analysis of ship-based observational data

Curriculum Vitae  
since 2006 Research scientist, Institute of Environmental Physics (IUP), University of Bremen
2004 - 2006 Postdoctoral researcher, Institute of Environmental Physics (IUP), University of Bremen
02/2004 Ph.D. (Dr. rer. nat.) in physics, University of Bremen
2000 - 2004 research assistant, Institute of Environmental Physics (IUP), University of Bremen
1997 - 2000 research assistant, Institute for Marine Science (IfM), University of Kiel
08/1997 Diplom in physical oceanography, University of Kiel
1993-1997 graduate studies in physical oceanography, University of Kiel
1991-1993 undergraduate studies in physics, University of Marburg

SFB/TRR 181 "Energy transfer in atmosphere and ocean", Projects W5: Internal wave energy dissipation and wavenumber spectra: Adaptive sampling in the ocean interior, L3: Meso- to submesoscale turbulence in the ocean; DFG 2020-2024.
SFB/TRR172 "Arctic Amplification (AC)3", Project C04: Coupling between atmosphere, mixed layer and pycnocline under Arctic amplification: the role of sea ice related processes; DFG 2020-2023.
HydroThermadec: Geochemical and ecological impact of hydrothermal processes in intraoceanic volcanic arcs - the Kermadec Arc (SW Pacific); BMBF 2016-2019.
IRTG 1904 ArcTrain, Prozesse und Auswirkungen des Klimawandels im Nordatlantik und in der Kanadischen Arktis, Project HB-06; DFG 2013-2022.
Cluster of Excellence "The Ocean in the Earth System”: Hydrothermal plumes at the ultraslow-spreading Gakkel Ridge, Karasik Seamount; DFG 2016.
RidgeMix: Topography controlled mixing along mid-ocean ridges; DFG 2015-2016.
Cluster of Excellence "The Ocean in the Earth System”: Hydrothermal plumes at the ultraslow-spreading SW Indian Ridge 10-16°E; DFG 2013.
FINE EDDY I+II: Eddies and finestructure variability in the NAC; DFG 2010-2013.
Randstrommix: Mixing processes in the deep western boundary current at 47°N; DFG 2007-2010.

Graduate Supervision
PhD: Natalia Sukhikh (2020), Georg Sebastian Völker (2017), Janna Köhler (2013), Mingming Li (2013), Ye Tao (2012), Uwe Stöber (2009)
MSc./Diplom: Florian Schmid (2013), Antje Buss (2011), Robert Meissner (2010), Janna Köhler (2009), Uwe Stöber (2005)

Bohrmann, G., K. Streuff, M. Roemer, S.-M. Knutsen, D. Smrzka, J. Kleint, A. Röhler, T. Pape, N.R. Sandstå, C. Kleint, C. Hansen, C. Dos Santos Ferreira, M. Walter, S. Kasemann, and W. Bach (2024), Discovery of the first hydrothermal field along the 500‐km‐long Knipovich Ridge offshore Svalbard (the Jøtul field). Sci. Reports, 14:10168, doi:10.1038/s41598-024-60802-3.
Bracamontes-Ramírez, J., M. Walter, and M. Losch (2024) Near-inertial wave propagation in the deep Canadian Basin: Turning depths and the homogeneous deep layer. J. Geophys. Res. Oceans 129, e2023JC020228, doi:10.1029/2023JC020228.
Heuze, C., O. Huhn, M. Walter, N. Sukhikh, S. Karam, W. Körtke, M. Vredenborg, K. Bulsiewicz, J. Sültenfuß, Y.-C. Fang, C. Mertens, B. Rabe, S. Tippenhauer, J. Allerholt, H. He, D. Kuhlmey, I. Kuznetsov, and M. Mallet (2023), A year of transient tracers (chlorofluorocarbon 12 and sulfur hexafluoride), noble gases (helium and neon), and tritium in the Arctic Ocean from the MOSAiC expedition (2019–2020), Earth Syst. Sci. Data, 15, 5517–5534, 2023, doi:10.5194/essd-15-5517-2023.
von Jackowski, A., M. Walter, T. Spiegel, P.L. Buttigieg, and M. Molari (2023), Drivers of pelagic and benthic microbial communities on central Arctic seamounts, Front. Mar. Sci., 10:1216442, doi:10.3389/fmars.2023.1216442.
Dede, B., T. Priest, W. Bach, M. Walter, R. Amann, und A. Meyerdierks (2023), High abundance of hydrocarbon-degrading Alcanivorax in plumes of hydrothermally active volcanoes in the South Pacific Ocean. ISME J, 17, 600-610, doi:10.1038/s41396-023-01366-4.
Purkiani, K., M. Haeckel, S. Haalboom, K. Schmidt, P. Urban, I.-Z. Gazis, H. de Stigter, M. Walter, A. Paul, and A. Vink (2022), Impact of a long-lived anticyclonic mesoscale eddy on seawater anomalies in the northeastern tropical Pacific Ocean: A composite analysis from hydrographic measurements, sea level altimetry data and reanalysis model products, Ocean Sci., 18, 1163-1181, doi:10.5194/os-18-1163-2022.
German, C.R., E.P. Reeves, A. Türke, A. Diehl, E. Albers, W. Bach, A. Purser, S.P. Ramalho, S. Suman, C. Mertens, M. Walter, E. Ramirez-Llodra, V. Schlindwein, S. Bünz, and A. Boetius (2022), Volcanically hosted venting with indications of ultramafic influence at Aurora hydrothermal field on Gakkel Ridge, Nature Communications 13: 6517 (2022), doi:10.1038/s41467-022-34014-0.
Wendisch, M., M. Brückne, S. Crewell, A. Ehrlich, J. Notholt, C. Lüpkes, A. Macke, J.P. Burrows, A. Rinke, J. Quaas, M. Maturilli, V. Schemann, M.D. Shupe, E.F. Akansu, C. Barrientos-Velasco, K. Bärfuss, A.-M. Blechschmidt, K. Block, I. Bougoudis, H. Bozem, C. Böckmann, A. Bracher, H. Bresson,L. Bretschneider, M. Buschmann, D.G. Chechin, J. Chylik, S. Dahlke, H. Deneke, K. Dethloff, T. Donth, W. Dorn, R. Dupuy, K. Ebell, U. Egerer, R. Engelmann, O. Eppers, R. Gerdes, R. Gierens, I.V. Gorodetskaya, M. Gottschalk, H. Griesche, V.M. Gryanik, D. Handorf, B. Harm-Altstädter, J. Hartmann, M. Hartmann, B. Heinold, A. Herber, H. Herrmann, G. Heygster, I. Höschel, Z. Hofmann, J. Hölemann, A. Hünerbein, S. Jafariserajehlou, E. Jäkel, C. Jacobi, M. Janout, F. Jansen, O. Jourdan, Z. Jurányi, H. Kalesse-Los, T. Kanzow, R. Käthner, L.L. Kliesch, M. Klingebiel, E.M. Knudsen, T. Kovács, W. Körtke, D. Krampe, J. Kretzschmar, D. Kreyling, B. Kulla, D. Kunkel, A. Lampert, M. Lauer, L. Lelli, A. von Lerber, O. Linke, U. Löhnert, M. Lonardi, S.N. Losa, M. Losch, M. Maahn, M. Mech, L. Mei, S. Mertes, E. Metzner, D. Mewes, J. Michaelis, G. Mioche, M. Moser, K. Nakoudi, R. Neggers, R. Neuber, T. Nomokonova, J. Oelker, I. Papakonstantinou-Presvelou, F. Pätzold, V. Pefanis, C. Pohl,M. van Pinxteren, A. Radovan, M. Rhein, M. Rex, A. Richter, N. Risse, C. Ritter, P. Rostosky, V.V. Rozanov, E. Ruiz Donoso, P. Saavedra-Garfias, M. Salzmann, J. Schacht, M. Schäfer, J. Schneider, N. Schnierstein, P. Seifert, S. Seo, H. Siebert, M.A. Soppa, G. Spreen, I.S. Stachlewska, J. Stapf, F. Stratmann, I. Tegen, C. Viceto, C. Voigt, M. Vountas, A. Walbröl, M. Walter, B. Wehner, H. Wex, S. Willmes, M. Zanatta, und S. Zeppenfeld (2023). Atmospheric and Surface Processes, and Feedback Mechanisms Determining Arctic Amplification: A Review of First Results and Prospects of the (AC)3 Project, Bulletin of the American Meteorological Society, 104, doi:10.1175/BAMS-D-21-0218.1.
Rabe, B., C. Heuzé J. Regnery, Y. Aksenov, J. Allerholt, M. Athanase, Y. Bai, C. Basque, D. Bauch, T.M. Baumann, D. Chen, S.T. Cole, L. Craw, A. Davies, E. Damm, K. Dethloff, D.V. Divine, F. Doglioni, F. Ebert, Y.-C. Fang, I. Fer, A.A. Fong, R. Gradinger, M.A. Granskog, R. Graupner, C. Haas, H. He, Y. He, M. Hoppmann, M. Janout, D. Kadko, T. Kanzow, S. Karam, Y. Kawaguchi, Z. Koenig, B. Kong, R.A. Krishfield, T. Krumpen, D. Kuhlmey, I. Kuznetsov, M. Lan, G. Laukert, R. Lei, T. Li, S. Torres-Valde ́s, L. Lin, L. Lin, H. Liu, N. Liu, B. Loose, X. Ma, R. MacKay, M. Mallet, R.D.C. Mallett, W. Maslowski, C. Mertens, V. Mohrholz, M. Muilwijk, M- Nicolaus, J.K. O’Brien, D. Perovich, J. Ren, M. Rex, N. Ribeiro, A. Rinke, J. Schaffer, I. Schuffenhauer, K. Schulz, M.D. Shupe, W. Shaw, V. Sokolov, A. Sommerfeld, G. Spreen, T. Stanton, M. Stephens, J. Su, N. Sukhikh, A. Sundfjord, K. Thomisch, S. Tippenhauer, J.M. Toole, M. Vredenborg, M. Walter, H. Wang, L. Wang, Y. Wang, M. Wendisch, J. Zhao, M. Zhou, und J. Zhu (2022), Overview of the MOSAiC expedition: Physical oceanography. Elementa: Science of the Anthropocene 10(1), doi:10.1525/elementa.2021.00062.
Kleint, C., R. Zitoun, R. Neuholz, M. Walter, B. Schnetger, L. Klose, S.M. Chiswell, R. Middag, P. Laan, S.G. Sander, and A. Koschinsky (2022), Trace metal dynamics in shallow hydrothermal plumes at the Kermadec, Arc. Frontiers Mar. Sci., 8, 782734, doi:10.3389/fmars.2021.782734.
Löb J, J. Köhler, M. Walter, C. Mertens, and M. Rhein (2021), Time series of near-inertial gravity wave energy fluxes: The effect of a strong wind event. J. Geophys. Res. Oceans, 126, e2021JC017472, doi:10.1029/2021JC017472.
Löb, J., J. Köhler, C. Mertens, M. Walter, Z. Li, J.-S. von Storch, Z, Zhao, and M. Rhein (2020), Observations of the low mode internal tide and its interaction with mesoscale flow south of the Azores, J. Geophys. Res. Ocean, doi:10.1029/2019JC015879.
Purkiani, K., A. Paul, A. Vink, M. Walter, M. Schulz, and M. Haeckel (2020), Evidence of eddy-related deep ocean current variability in the North-East Tropical Pacific Ocean induced by remote gap winds, Biogeosciences, 17, 6527–6544, doi:10.5194/bg-17-6527-2020.
Neuholz, R., C. Kleint, B. Schnetger, A. Koschinsky, P. Laan, R. Middag, S. Sander, J. Thal, A. Türke, M. Walter, R. Zitoun, and H.-J. Brumsack (2020), Submarine hydrothermal discharge and fluxes of dissolved Fe and Mn, and He isotopes at Brothers volcano based on short-lived radium isotopes, Minerals, 10, 969, doi:10.3390/min10110969.
Voelker, G.S., D. Olbers, C. Mertens, M. Walter, and P.G. Myers (2020), Estimates of wind power and radiative near-inertial internal wave flux - The hybrid slab model and its applications to the North Atlantic, Ocean Dynamics, 70, 1357-1376, doi:10.1007/s10236-020-01388-y.
Neuholz, R., B. Schnetger, C. Kleint, A. Koschinsky, K. Lettmann, S. Sander, A. Türke, M. Walter, R. Zitoun, and H.-J. Brumsack (2020), Near-field hydrothermal plume dynamics at Brothers Volcano (Kermadec Arc): A short-lived radium isotope study. Chem. Geology, 533, 119379, doi:10.1016/j.chemgeo.2019.119379.
Köhler, J., M. Walter, C. Mertens, J. Stiehler, Z. Li, Z. Zhao, J.-S. von Storch, and M. Rhein (2019), Energy Flux Observations in an Internal Tide Beam in the Eastern North Atlantic. J. Geophys. Res. Ocean, 124, 5747–5764, doi:10.1029/2019JC015156.
Voelker, G.S., P. Myers, M. Walter, and Bruce R. Sutherland (2019),
Generation of Oceanic Internal Gravity Waves by a Cyclonic Surface Stress Disturbance, Dyn. Atmos. Oceans, 86, 116-133, doi:10.1016/j.dynatmoce.2019.03.005.
Mertens, C., J. Köhler, M. Walter, J.-S. von Storch and M. Rhein (2019), Observations and Models of Low Mode Internal Waves in the Ocean, in: C. Eden and A. Iske (eds.), Energy Transfers in Atmosphere and Ocean, Mathematics of Planet Earth 1, Springer Nature Switzerland AG, 127-144, doi:10.1007/978-3-030-05704-6_4.
Köhler, J., G.S. Völker, and M. Walter (2018), Response of the internal wave field to remote wind forcing by tropical cyclones. J. Phys. Oceanogr., 48, 317-328, doi:10.1175/JPO-D-17-0112.1.
Kedzior, S., A. Buß, B. Schneider, J. Schneider von Deimling, J. Sültenfuß, M. Walter, C. Mertens und Gregor Rehder (2016), Geochemical observations within the water column at the CO2-rich hydrothermal systems Hatoma Knoll and Yonaguni Knoll IV, in the southern Okinawa Trough. J. Geophys. Res., 121, doi:10.1002/2016JC012003.
Köhler, J., C. Mertens, M. Walter, U. Stöber, M. Rhein and T. Kanzow (2014), Variability in the internal wave field induced by the Atlantic Deep Western Boundary Current at 16 N. J. Phys. Oceanogr., 44(2), 492-516, doi:10.1175/JPO-D-13-010.1.
Mertens, C., M. Rhein, M. Walter, C. W. Böning, E. Behrens, D. Kieke, R. Steinfeldt und U. Stöber (2014), Circulation and transports in the Newfoundland Basin, western subpolar North Atlantic, J. Geophys. Res., 119, 7772-7793, doi:10.1002/2014JC010019.
Walter, M., and C. Mertens (2013), Mid-depth mixing linked to North Atlantic Current variability, Geophys. Res. Lett., 40(18), 4869-4875, doi:10.1002/grl.50936.
Schmale, O., M. Walter, J. Schneider v. Deimling, J. Sültenfuß, S. Walker, G. Rehder, and R. Keir (2012), Fluid and gas fluxes from the Logatchev hydrothermal vent area. Geochemistry, Geophysics, Geosystems (G3), 13(7), Q07007, doi:10.1029/2012GC004158.
Walter, M., C. Mertens, U. Stöber, Chris R. German, D. R. Yoerger, J. Sültenfuß, M. Rhein, B. Melchert, and E. T. Baker (2010), Rapid dispersal of a hydrothermal plume by turbulent mixing. Deep-Sea Res. I, 57(8), 931-945, doi:10.1016/j.dsr.2010.04.010.
Mertens, C., M. Rhein, K. Kirchner, and M. Walter (2008), Modulation of the Inflow into the Caribbean Sea by North Brazil Current Rings. Deep-Sea Res. I, 56(7), 1057-1076, doi:10.1016/j.dsr.2009.03.002.
Keir, Robin S., O. Schmale, M. Walter, J. Sültenfuß, R. Seifert, and M. Rhein (2008), Flux and dispersion of gases from the 'Drachenschlund' hydrothermal vent at 8 18'S, 13 30'W. Earth Planet. Sci. Lett., 270(3-4), 338-348, doi:10.1016/j.epsl.2008.03.054.
Melchert, B., Colin W. Devey, Chris R. German, K. S. Laschkewitz, R. Seifert, M. Walter, C. Mertens, D. R. Yoerger, E. T. Baker, H. Paulick, and K. Nakamura (2008), First evidence for high-temperature off-axis venting of deep crustal/mantle heat: The Nibelungen hydrothermal field, southern Mid-Atlantic Ridge. Earth Planet. Sci. Lett., 275(1-2), 61-69, doi:10.1016/j.epsl.2008.08.010.
Stöber, U., M. Walter, C. Mertens, and M. Rhein (2008), Mixing estimates from hydrographic measurements in the Deep Western Boundary Current of the North Atlantic. Deep-Sea Res. I, 55(6), 721-736, doi:10.1016/j.dsr.2008.03.006.
Haase, K. M., S. Petersen, A. Koschinsky, R. Seifert, C. Devey, N. Dubilier, S. Fretzdorff, D. Garbe-Schönberg, C. R. German, O. Giere, R. Keir, J. Kuever, K. Lackschewitz, J. Mawick, H. Marbler, B. Melchert, C. Mertens, H. Paulick, M. Perner, M. Peters, S. Sander, O. Schmale, T. M. Shank, J. Stecher, H. Strauss, J. Süling, U. Stöber, M. Walter, M. Warmuth, S. Weber, U. Westernströer, D. Yoerger, and F. Zielinski (2007), Young volcanism and related hydrothermal activity at 5 S on the slow-spreading southern Mid-Atlantic Ridge. Geochemistry, Geophysics, Geosystems (G3), 8, Q11002, doi:10.1029/2006GC001509.
Steinfeldt, R., M. Rhein, and M. Walter (2007), NADW transformation at the western boundary between 66 W/20 N and 10 N. Deep-Sea Res. I, 54(6), 835-855, doi:10.1016/j.dsr.2007.03.004.
Koschinsky, A., A. Billings, C. Devey, N. Dubilier, A. Duester, D. Edge, D. Garbe-Schönberg, C. German, O. Giere, R. Keir, K. Lackschewitz, H.A. Mai, H. Marbler, J. Mawick, B. Melchert, C. Mertens, M. Peters, S. Sander, O. Schmale, W. Schmidt, R. Seifert, C. Seiter, U. Stöber, I. Suck, M. Walter, S. Weber, D. Yoerger, M. Zarrouk, F. Zielinski (2006), Discovery of new hydrothermal vents on the Southern Midatlantic Ridge, 4 S-10 S, during cruise M68/1. InterRidge News, 15, 9-14.
Rhein, M., K. Kirchner, C. Mertens, R. Steinfeldt, M. Walter, and U. Fleischmann-Wischnath (2005), The transport of South Atlantic Water through the passages south of Guadeloupe and across 16 N, 2000 - 2004. Deep-Sea Res. I, 52(12), 2234-2249, doi:10.1016/j.dsr.2005.08.003.
Stramma, L., M. Rhein, P. Brandt, M. Dengler, C. W. Böning, and M. Walter (2005), Upper ocean circulation in the western tropical Atlantic in boreal fall 2000. Deep-Sea Res. I, 52(2), 221-240, doi:10.1016/j.dsr.2004.07.021.
Walter, M., C. Mertens, and M. Rhein (2005), Mixing estimates from a large-scale hydrographic survey in the North Atlantic. Geophys. Res. Lett., 32, L13605, doi:10.1029/2005GL022471.
Rhein, M., M. Walter, C. Mertens, R. Steinfeldt, and D. Kieke (2004), The circulation of North Atlantic Deep Water at 16 N, 2000 - 2003. Geophys. Res. Lett., 31, L14305, doi:10.1029/2004GL019993.
Walter, M. (2004), Warming of Greenland Sea Deep Water induced by abyssal mixing. Ph.D. Thesis, University of Bremen. (pdf, in englisch).
Plähn, O., B. Baschek, T. H. Badewien, M. Walter, and M. Rhein (2002), Importance of the Gulf of Aqaba for the formation of bottom water in the Red Sea. J. Geophys. Res., 107(C8), doi:10.1029/2000JC000342.
Walter, M. (1997), Die Zirkulation des westlichen tropischen Indischen Ozeans im Sommer 1995. Diploma Thesis, Christian-Albrechts-University of Kiel.

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