Items where Author is "Geibert, W."

Article

Geibert, W.

, Matthießen, J.

, Wollenburg, J.

and Stein, R.

(2022)
Reply to ‘Challenging the hypothesis of an arctic ocean lake during recent glacial episodes’ by Hillaire‐Marcel, et al ,

Journal of Quaternary Science, 1-4 .

doi:10.1002/jqs.3431 , hdl:10013/epic.947dd612-176f-44ac-8c29-040f6e5fa1a5

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Article

Arriola-Velásquez, A. , Tejera, A. , Guerra, J. , Geibert, W.

, Stimac, I.

, Cámara, F. , Alonso, H. , Rubiano, J. and Martel, P. (2021)
226Ra, 228Ra and 40K as tracers of erosion and accumulation processes: A 3-year study on a beach with different sediment dynamics ,

CATENA, 207 , p. 105705 .

doi:10.1016/j.catena.2021.105705 , hdl:10013/epic.fc7154ab-ae66-42e2-b49a-3076a7265e5e

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Article

Valk, O.

, Rutgers van der Loeff, M. M.

, Geibert, W.

, Gdaniec, S. , Moran, S. B. , Lepore, K. , Edwards, R. L. , Lu, Y. , Puigcorbé, V. , Casacuberta, N. , Paffrath, R. , Smethie, W. and Roy-Barman, M. (2020)
Decrease ²³⁰Th in the Amundsen Basin since 2007: far-field effect of increased scavenging on the shelf? ,

Ocean Science, 16 (1), pp. 221-234 .

doi:10.5194/os-16-221-2020 , hdl:10013/epic.ef896cba-65a5-4be9-86ca-0bfe1456659d

Article

Dumont, M. , Pichevin, L. , Geibert, W.

, Crosta, X. , Michel, E. , Moreton, S. , Dobby, K. and Ganeshram, R. (2020)
The nature of deep overturning and reconfigurations of the silicon cycle across the last deglaciation ,

Nature Communications, 11 (1) .

doi:10.1038/s41467-020-15101-6 , hdl:10013/epic.94c53ea8-4d00-4e92-aff5-2a3a600d4370

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Article

Pichevin, L. E. , Ganeshram, R. S. , Geibert, W.

, Thunell, R. and Hinton, R. (2014)
Silica burial enhanced by iron limitation in oceanic upwelling margins ,

Nature Geoscience, 7 (7), pp. 541-546 .

doi:10.1038/ngeo2181 , hdl:10013/epic.45811

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Article

Kretschmer, S. , Geibert, W.

, Rutgers v. d. Loeff, M.

, Schnabel, C. , Xu, S. and Mollenhauer, G.

(2011)
Fractionation of 230Th, 231Pa, and 10Be induced by particle size and composition within an opal-rich sediment of the Atlantic Southern Ocean ,

Geochimica et Cosmochimica Acta, 75 (22), pp. 6971-6987 .

doi:10.1016/j.gca.2011.09.012 , hdl:10013/epic.39127

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Article

Schmidt, C. , Hanfland, C. , Regnier, P. , van Cappellen, P. , Schlüter, M.

, Knauthe, U. , Stimac, I.

and Geibert, W.

(2011)
228Ra, 226Ra, 224Ra and 223Ra in potential sources and sinks of land-derived material in the German Bight of the North Sea: implications for the use of radium as a tracer ,

Geo Marine Letters .

doi:10.1007/s00367-011-0231-5 , hdl:10013/epic.36927

Article

Lechtenfeld, O. J. , Koch, B. P.

, Geibert, W.

, Ludwichowski, K. U. and Kattner, G. (2011)
Inorganics in organics: quantification of organic phosphorus and sulfur and trace element speciation in natural organic matter using HPLC-ICP-MS ,

Analytical Chemistry, 83 , pp. 8968-8974 .

doi:10.1021/ac201765a , hdl:10013/epic.38662

Article

Kretschmer, S. , Geibert, W.

, Rutgers v. d. Loeff, M.

and Mollenhauer, G.

(2010)
Grain size effects on 230Thxs inventories in opal-rich and carbonate-rich marine sediments ,

Earth and Planetary Science Letters. .

doi:10.1016/j.epsl.2010.03.021 , hdl:10013/epic.35388

Article

Geibert, W.

, Assmy, P. , Bakker, D. C. E. , Hanfland, C. , Hoppema, M.

, Pichevin, L. E. , Schröder, M. , Schwarz, J. N. , Stimac, I.

, Usbeck, R. and Webb, A. (2010)
High primary productivity in an ice melting hot spot at the eastern boundary of the Weddell Gyre ,

Global Biogeochemical Cycles, 24, GB3007. .

doi:10.1029/2009GB003657 , hdl:10013/epic.35579

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Article

Martinez-Garcia, A. , Rosell-MelÃ©, A. , Geibert, W.

, Gersonde, R. , Masqué, P. , Gaspari, V. and Barbante, C. (2009)
Links between iron supply, marine productivity, sea surface temperature and CO2 over the last 1.1 Ma ,

Paleoceanography 24, PA1207 .

doi:10.1029/2008PA001657 , hdl:10013/epic.31919

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Article

Geibert, W.

and Vöge, I.

(2008)
Progress in the Determination of 227Ac in Sea Water ,

Marine Chemistry, 109 (3-4), pp. 238-249 .

doi:10.1016/j.marchem.2007.07.012 , hdl:10013/epic.39142

Article

Geibert, W.

, Charette, M. , Moore, W. S. , Guebuem, K. , Street, J. , Young, M. and Paytan, A. (2008)
The release of dissolved actinium to the ocean: a global comparison of different end-members ,

Marine Chemistry., 109 (3-4), pp. 409-420 .

doi:10.1016/j.marchem.2007.07.005 , hdl:10013/epic.39143

Article

Bakker, D. C. E. , Hoppema, M.

, Schröder, M. , Geibert, W.

and De Baar, H. J. W. (2008)
A rapid transition from ice covered CO2-rich waters to a biologically mediated CO2 sink in the eastern Weddell Gyre ,

Biogeosciences Discussions, 51235., 1205 .

hdl:10013/epic.34108

Article

Bakker, D. C. E. , Hoppema, M.

, Schröder, M. , Geibert, W.

and De Baar, H. J. W. (2008)
A rapid transition from ice covered CO2rich waters to a biologically mediated CO2 sink in the eastern Weddell Gyre ,

Biogeosciences, 5 , pp. 1373-1386 .

hdl:10013/epic.31200

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Article

Francois, R. , Frank, M. , Rutgers v. d. Loeff, M.

, Bacon, M. P. , Geibert, W.

, Kienast, S. , Anderson, R. F. , Bradtmiller, L. , Chase, Z. , Henderson, G. , Marcantonio, F. and Allen, S. E. (2007)
Comment on Do geochemical estimates of sediment focusing pass the sediment test in the equatorial Pacific? by Lyle et al. ,

Paleoceanography, 22, PA1216 .

doi:10.1029/2005PA001235 , hdl:10013/epic.25698

Article

Geibert, W.

, Rutgers v. d. Loeff, M.

, Usbeck, R. , Gersonde, R. , Kuhn, G.

and Seeberg-Elverfeldt, J. (2005)
Quantifying the opal belt in the Atlantic and southeast Pacific sector of the Southern Ocean by means of 230Th normalization ,

Global biogeochemical cycles, 19, GB4001 .

doi:10.1029/2005GB002465 , hdl:10013/epic.22294

Article

Geibert, W.

(2004)
Book review: Sedimentary processes - quantification using radionuclides by J. Carroll and I. Lerche ,

Isotopes in environmental and health studies. .

hdl:10013/epic.21110

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Article

Geibert, W.

and Usbeck, R. (2004)
The adsorption of Thorium and Protactinium onto different particle types: Experimental Findings ,

Geochimica et cosmochimica acta, 68 (7), pp. 1489-1501 .

doi:10.1016/j.gca.2003.10.011 , hdl:10013/epic.16072

Article

Geibert, W.

(2002)
Actinium-227 als Tracer für Advektion und Mischung in der Tiefsee ,

Mitteilungen der Deutschen Gesellschaft für Meeresforschung 1/2002, pp. 3-5 .

hdl:10013/epic.16168

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Article

Geibert, W.

, Rutgers v. d. Loeff, M.

, Hanfland, C. and Dauelsberg, H. J. (2002)
Actinium-227 as a Deep-Sea Tracer: Sources, Distribution and Applications ,

Earth and planetary science letters, 198 (1), pp. 147-165 .

doi:10.1016/S0012-821X(02)00512-5 , hdl:10013/epic.15108

Article

Walter, H. J. , Geibert, W.

, Rutgers v. d. Loeff, M.

, Fischer, G. and Bathmann, U. (2001)
Shallow vs deep-water scavenging of 231Pa and 230Th in radionuclide enriched waters of the Atlantic sector of the Southern Ocean ,

Deep-Sea Research I, 48 (2), pp. 471-493 .

doi:10.1016/S0967-0637(00)00046-7 , hdl:10013/epic.13838

Inbook

Rutgers v. d. Loeff, M.

and Geibert, W.

(2008)
U- and Th-Series Nuclides as Tracers of Particle Dynamics, Scavenging and Biogeochemical Cycles in the Oceans ,

In: RADIOACTIVITY IN THE ENVIRONMENT ; 13, U-Th series radionuclides in aquatic systems, eds. S. Krishnaswami and J. K. Cochran, Elsevier., Amsterdam, Elsevier, 42 p., ISBN: 978-0-08-045012-4 .

doi:10.1016/S1569-4860(07)00007-1 , hdl:10013/epic.32389

Inbook

Hanfland, C. , Geibert, W.

, Vöge, I.

and Rutgers v. d. Loeff, M.

(2007)
Atom-Uhren im Südlichen Ozean ,

Polarstern : 25 Jahre Forschung in Arktis und Antarktis / Dieter K. Fütterer; Eberhard Fahrbach. Bielefeld : Delius Klasing .

hdl:10013/epic.28662

Inbook

Rutgers v. d. Loeff, M.

, Friedrich, J. , Geibert, W.

, Hanfland, C. , Höltzen, H. , Vöge, I.

and Walter, H. J. (2004)
Radionuclides as tracers for particle flux and transport of water masses in the Atlantic sector of the Southern Ocean ,

The South Atlantic in the Late Quaternary - Reconstruction of Material Budget and Current systems. Wefer, G., Ratmeyer, V. and Meinecke, G. (Eds.), Springer-Verlag : Berlin, Heidelberg, New York, Tokyo:, ISBN: 3-540-21028-8 .

hdl:10013/epic.15232

Thesis -PhD

Geibert, W.

(2001)
Actinium-227 als Tracer für Advektion und Mischung in der Tiefsee ,

PhD thesis, Universität Bremen.

hdl:10013/epic.17847

Conference -Talk

Gardner, J. , Assmy, P. , Fong, A. , Niehoff, B.

, Waite, A. , Nöthig, E. M.

, Hoppe, C.

, Engel, A. , Rogge, A.

, Chen, J. , Ren, J. , Jin, H. , Zhuang, J. , Lan, M. , Jianfeng, H. , Flores, H.

, Havermans, C.

, Wollenburg, J.

, Olsen, L. , Iversen, M.

, Müller, O. , Geibert, W.

, Reigstad, M. and Gradinger, R. (2022)
Particle dynamics and vertical fluxesin in the central Arctic Ocean during the MOSAiC expedition ,

International MOSAiC Science Conference, Potsdam, Germany, 25 April 2022 - 29 April 2022 .

hdl:10013/epic.27fc1253-461d-46ae-bfb4-5c5f7e7fd958

Conference -Talk

Geibert, W.

, Hsieh, A. , Hanfland, C. , Verdeny, E. , Masqué, P. and Henderson, G. (2011)
Actinium-227 in the Atlantic Sector of the Southern Ocean: New results from Bonus-Goodhope and UK Geotraces ,

Goldschmidt Conference, August 14-19, 2011, Prague, Czech Republic. .

hdl:10013/epic.37504

Conference -Poster

Kretschmer, S. , Kusch, S. , Geibert, W.

, Rutgers v. d. Loeff, M.

and Mollenhauer, G.

(2009)
Distribution of 230Thxs and 231Paxs in sediment particle classes of opal-rich and carbonate-rich sediments ,

European Geoscience Union, General Assembly 2009. .

hdl:10013/epic.32543

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Conference -Talk

Hanfland, C. , Geibert, W.

, Masque, P. and Verdeny, E. (2009)
Soluble radionuclides as tracers for circulation and mixing in the Southern Ocean ,

IPY BONUS-Goodhope first post-cruise meeting, January 23-24, 2009, Villefranche-sur-Mer, France. .

hdl:10013/epic.32014

Conference -Talk

Bakker, D. C. E. , Hoppema, M.

, Geibert, W.

, Schröder, M. and De Baar, H. J. W. (2009)
A rapid transition from ice covered CO2-rich waters to a biologically mediated CO2 sink in the eastern Weddell Gyre ,

8th International Carbon Dioxide Conference, 13-19 September 2009, Jena, Germany. .

hdl:10013/epic.33237

Conference -Talk

Kretschmer, S. , Geibert, W.

, Schnabel, C. , Rutgers v. d. Loeff, M.

and Mollenhauer, G.

(2008)
Distribution of 230Th, 10Be and 231Pa in sediment particle classes ,

18. Annual V.M. Goldschmidt Conference, July 13th-18th 2008, Vancouver, Canada. .

hdl:10013/epic.30921

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Conference -Invited talk

Bakker, D. C. E. , Hoppema, M.

, Schröder, M. , Geibert, W.

and De Baar, H. J. W. (2008)
A rapid Transition from ice covered CO2rich waters to a biologically mediated CO2 Sink in the eastern Weddell Gyre ,

EGU General Assembly, WienApril 2008. .

hdl:10013/epic.30380

Conference -Talk

Bakker, D. C. E. , Hoppema, M.

, Schröder, M. , Geibert, W.

and Baar, H. J. W. (2008)
A rapid transition from ice covered CO2-rich waters to a biologically mediated CO2 Sink in the eastern Weddell Gyre ,

13th Biennial Challenger Conference for Marine Science, Bangor UniversitySeptember 2008. .

hdl:10013/epic.31020

Conference -Poster

Kretschmer, S. , Geibert, W.

, Rutgers v. d. Loeff, M.

and Mollenhauer, G.

(2007)
230Thxs budgets in size-fractionated calcareous near-surface sediments from Walvis Ridge ,

International Conference and 97th Annual Meeting of the Geologische Vereinigung e.V. (GV) The Oceans in the Earth System. Bremen, Germany October 1-5 .

hdl:10013/epic.30923

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Conference -Poster

Bakker, D. C. E. , Hoppema, M.

, Schröder, M. , Geibert, W.

and Baar, H. J. W. d. (2007)
Rapid transition from ice covered CO2-rich waters to a biologically mediated sink in the eastern Weddell Gyre ,

IP CarboOcean annual meeting, 4-7 December 2007, Bremen, Germany. .

hdl:10013/epic.28605

Conference -Poster

Hoppema, M.

, Bakker, D. C. E. and Geibert, W.

(2007)
Strong fCO2 undersaturation after ice melt in the eastern Weddell Gyre ,

Surface Ocean CO2 Variability and Vulnerabilities workshop, 11-14 April 2007, Paris, France. .

hdl:10013/epic.26528

Conference -Talk

Geibert, W.

(2006)
227Ac in the marine environment ,

Overview Lecture, 1st workshop on measurements of short-lived Radium isotopes using the RaDeCC delayed coincidence system, Marine Environment Laboratory of the IAEA, 2-6 Oct, Monaco. .

hdl:10013/epic.32593

Conference -Conference paper

Hanfland, C. , Geibert, W.

and Vöge, I. (2006)
Tracing marine processes in the Southern Ocean by means of naturally occurring radionuclides ,

Antarctica : contributions to global earth sciences ; proceedings of the IX International Symposium of Antarctic Earth Sciences PotsdamHrsg. Dieter Fütterer; Detlef Damaske; Georg Kleinschmidt ... Berlin [u.a.] : Springer .

hdl:10013/epic.31980

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Conference -Invited talk

Geibert, W.

and Rutgers v. d. Loeff, M.

(2006)
The flux of particles to the seafloor- clues from Thorium isotopes ,

Invited lecture, colloquium at the Institut de Ciència i Tecnologia Ambientals, Universitat Autònoma de Barcelona, 7 Nov., Bellaterra, Spain. .

hdl:10013/epic.32594

Conference -Poster

Geibert, W.

, Rutgers v. d. Loeff, M.

, Usbeck, R. , Gersonde, R. , Kuhn, G.

and Seeberg-Elverfeldt, J. (2005)
Biogenic silica accumulation rates in surface sediments of the Southern Ocean corrected for sediment redistribution ,

EGU General Assembly, 25-29 Apr., Vienna, Austria. .

hdl:10013/epic.23214

Conference -Invited talk

Geibert, W.

(2005)
Die Anwendung natürlicher Radionuklide zur Bestimmung von Stoffflüssen im marinen Milieu ,

Vortrag im Rahmen des ICBM-Kolloquiums, Oldenburg.5.2005. .

hdl:10013/epic.23152

Conference -Conference paper

Geibert, W.

, Rutgers v. d. Loeff, M.

, Usbeck, R. , Gersonde, R. , Kuhn, G.

and Seeberg-Elverfeldt, J. (2005)
Silica accumulation rates in surface sediments of the Southern Ocean corrected for sediment redistribution ,

presentation at EGU Wien.-29. April 2005. .

hdl:10013/epic.22310

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Conference -Poster

Hanfland, C. , Friedrich, J. , Geibert, W.

and Rutgers v. d. Loeff, M.

(2005)
Ziele und Vorbereitungen des deutschen Beitrags zum internationalen GEOTRACES Programm ,

22. Int. Polartagung, 18.-24.9.2005, Jena, Deutschland. .

hdl:10013/epic.22910

Conference -Talk

Geibert, W.

, Usbeck, R. , Webb, A. , Hanfland, C. , Schwarz, J. N. and Ansorge, I. (2004)
The Eastern Weddell Gyre- an overlooked high productivity region ,

Talk at the Open Science Conference of the XXVIII SCAR Meeting, 25-31 July 2004, Bremen, Germany (Terra Nostra Abstract Volume of XXVIII SCAR Meeting). .

hdl:10013/epic.21476

Conference -Talk

Geibert, W.

, Hanfland, C. , Schwarz, J. N. , Usbeck, R. , Webb, A. and Ansorge, I. (2004)
Ocean circulation and bioproductivity in the Weddell Gyre: geochemical findings ,

Talk at the 13th annual V.M. Goldschmidt Conference, Copenhagen, Denmark, June 5-11 .

hdl:10013/epic.21111

Conference -Conference paper

Geibert, W.

, Hanfland, C. , Schwarz, J. N. , Usbeck, R. , Webb, A. and Ansorge, I. (2004)
Ocean circulation and bioproductivity in the Weddell Gyre: geochemical findings ,

Geochimica et cosmochimica acta, 68(11S), A331 .

hdl:10013/epic.21112

Conference -Talk

Geibert, W.

, Usbeck, R. and Rutgers v. d. Loeff, M.

(2003)
Actinium-227 as a tracer for diapycnal mixing and deep upwelling ,

Keynote Lecture, 13th Annual Goldschmidt Conference, Kurashiki, Japan, Sept. 7-12 .

hdl:10013/epic.19618

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Conference -Conference paper

Geibert, W.

, Usbeck, R. and Rutgers v. d. Loeff, M.

(2003)
Actinium-227 as a tracer for diapycnal mixing and deep upwelling ,

Geochimica et cosmochimica acta, 67(18,S1), A118 .

hdl:10013/epic.19848

Conference -Talk

Geibert, W.

, Usbeck, R. , Schwarz, J. N. , Hanfland, C. , Webb, A. and Ansorge, I. (2003)
Chlorophyll and other indicators of productivity in the Eastern Weddell Gyre between 0°E and 23°E-Preliminary results of Polarstern Expedition ANT XX/2, Synpart project ,

EGU-AGU-EGS Joint Assembly, Nice, FranceApril. .

hdl:10013/epic.19172

Conference -Talk

Hanfland, C. and Geibert, W.

(2003)
Natural radioactive tracers between Africa and Antarctica: preliminary results from POLARSTERN expedition ANT XX/2 ,

9th International Symposium on Antarctic Earth Sciences, 7.-12.9.2003, Potsdam, Germany. .

hdl:10013/epic.19778

Conference -Talk

Gersonde, R. , Cortese, G. , Geibert, W.

and Kuhn, G.

(2003)
Plio-Pleistocene biogenic opal deposition and its relation to global climate evolution ,

Chapman Conference On the role of diatom production and Si flux and burial in the regulation of global cycles, 22-26 Sept., Paroikia, Paros, Greece. .

hdl:10013/epic.19813

Conference -Poster

Hanfland, C. , Geibert, W.

, Vöge, I. , Niemann, S. and Rutgers v. d. Loeff, M.

(2003)
The application of natural radionuclides in marine issues in the Southern Ocean ,

9th International Symposium on Antarctic Earth Sciences, 7.-12.9.2003, Potsdam, Germany. .

hdl:10013/epic.19779

Conference -Poster

Hanfland, C. , Geibert, W.

, Rutgers v. d. Loeff, M.

and Vöge, I. (2002)
Die Anwendung natürlicher Radionuklide auf marine Fragestellungen in den Polargebieten ,

Schriftenreihe der Deutschen Geologischen Gesellschaft .

hdl:10013/epic.18302

Conference -Poster

Geibert, W.

and Usbeck, R. (2002)
The adsorption of Th and Pa on different particle types in dependence of the provenance of natural seawater ,

Poster, 12th Annual Goldschmidt Conference, Davos, Switzerland, August 18-23 .

hdl:10013/epic.19846

Conference -Conference paper

Geibert, W.

and Usbeck, R. (2002)
The adsorption of Th and Pa on different particle types in dependence of the provenance of natural seawater ,

Geochimica et cosmochimica acta, 66, 15A, A269. .

hdl:10013/epic.19847

Conference -Talk

Hanfland, C. , Walter, H. J. , Geibert, W.

, Rutgers v. d. Loeff, M.

and Hegner, E. (2001)
Erfassung möglicher Eintragswege für Eisen in die produktiven Regionen des Südatlantiks mittels verschiedener geochemischer Tracer ,

20. Internationale Polartagung, 26.-30.3.2001, Dresden. .

hdl:10013/epic.18303

Conference -Poster

Hanfland, C. , Walter, H. J. , Geibert, W.

and Rutgers v. d. Loeff, M.

(2000)
228-Ra: a natural tracer for shelfwater input as a possible transport path of iron into the Southern Ocean ,

Southern Ocean-JGOFS Symposium, 8.-12.7.2000, Brest. .

hdl:10013/epic.18305

Conference -Poster

Geibert, W.

, Usbeck, R. and Rutgers v. d. Loeff, M.

(2000)
Is the "Deep Upwelling" south of the Antarctic Polar Front fast enough to limit vertical particle fluxes? Vertical water velocities estimated from the distribution of Actinium-227. ,

EOS (suppl.) .

hdl:10013/epic.18399

Conference -Talk

Geibert, W.

and Hanfland, C. (2000)
Natürliche Radioaktivität im Meerwasser - Der lange Weg von der Wasserprobe bis zum wissenschaftlichen Ergebnis ,

Öffentlicher Abendvortrag innerhalb der Reihe "Das AWI stellt sich vor".10.2000. .

hdl:10013/epic.18378

Conference -Poster

Walter, H. J. , Geibert, W.

, Jeandel, C. , Hanfland, C. and Rutgers v. d. Loeff, M.

(2000)
Source regions and transport paths of iron into South Atlantic surface waters: Significance of aeolian input? ,

EOS, Transactions AGU .

hdl:10013/epic.18309

Conference -Talk

Geibert, W.

, Walter, H. J. and Rutgers v. d. Loeff, M.

(1999)
Möglichkeiten und Grenzen der 230Th-Normierung zur Rekonstruktion von Paläoflüssen im Atlantischen Sektor des Südozeans ,

Terra Nostra .

hdl:10013/epic.18401

Conference -Conference paper

Geibert, W.

, Walter, H. J. , Hanfland, C. and Rutgers v. d. Loeff, M.

(1998)
Surface concentrations of 228Th, 230Th and 231Pa in the Atlantic Sector of the Southern Ocean-the effects on paleoenvironmental applications ,

Mineralogical magazineA .

hdl:10013/epic.18400

"Berichte zur Polar- und Meeresforschung" PhD

Geibert, W.

(2001)
Actinium-227 als Tracer für Advektion und Mischung in der Tiefsee = Actinium-227 as a tracer for advection and mixing in the deep-sea ,

Berichte zur Polar- und Meeresforschung (Reports on Polar and Marine Research), Bremerhaven, Alfred Wegener Institute for Polar and Marine Research, 385 , 112 p. .

doi:10.2312/BzPM_0385_2001 , hdl:10013/epic.10389

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