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Seitenpfad:

Dr. Christian Hansen

Telefon: 

+49 421 218-65405

Fax:

+49 421 218-65429

E-Mail:

Raum: 

GEO 5320
Christian Hansen

Ocean Floor Cluster - The Seafloor as a Reactor

Expeditions

scheduled for 16 Nov 2023 - 29 Dez 2023 SO301 - R/V Sonne Port Louis - Port Louis Kairei Hydrothermal Vent Field / Central Indian Ridge [KaBe / SCIROCCO]
scheduled for 08 Jun 2023 - 08 Jul 2023 M190 - R/V Meteor Las Palmas - Algeciras Hydrothermal Venting / Mid Atlantic Ridge [DIVE@MAR]
06 Mar 2020 - 22 Apr 2020 SO273 - R/V Sonne Cape Town - Emden Petrology and Hydrothermalism / Marion Rise [MARION]
22 Dec 2016 - 21 Jan 2017 SO253 - R/V Sonne Noumea - Auckland Hydrothermalism in Intraoceanic Arcs / Kermadec Arc [HYDROTHERMADEC]
09 Nov 2013 - 16 Dec 2013 PS81 - R/V Polarstern Cape Town - Cape Town Hydrothermal Plume Hunting / Southwest Indian Ridge [SWIR]

 

Publications

  • Hansen CT, Kleint C, Böhnke S, Klose L, Adam‐Beyer N, Sass K, Zitoun R, Sander SG, Indenbirken D, Dittmar T, Koschinsky A, Perner M (2022): Impact of high Fe‐concentrations on microbial community structure and dissolved organics in hydrothermal plumes: an experimental study. Scientific Reports 12:20723.
    | doi:10.1038/s41598-022-25320-0 |
  • Wilckens FK, Hansen CT, Diehl A, Bach W, Kasemann SA (2022): Sources of Mg enrichments in Vent Fluids from the Kermadec Arc recorded by Li, B and Mg Isotopes. Geochemistry, Geophysics, Geosystems 23(11), e2022GC010471.
    | doi:10.1029/2022GC010471 |
  • Hansen CT, Lissenberg CJ, Kahl W-A, Bach W (2022): Hydrothermal troctolite alteration at 300 and 400°C – Insights from flexible Au-reaction cell batch experimental investigations. American Mineralogist.
    | doi:10.2138/am-2021-7832 |
  • Albers E, Shervais JW, Hansen CT, Ichiyama Y, Fryer P (2022): Shallow depth, substantial change: fluid-metasomatism causes major compositional modifications of subducted volcanics (Mariana forearc). Frontiers in Earth Science - Petrology 10:826312.
    | doi:10.3389/feart.2022.826312 |
  • Dede B, Hansen CT, Neuholz R, Schnetger B, Kleint C, Walke S, Bach W, Amann R, Meyerdierks A (2022): Niche differentiation of sulfur-oxidizing bacteria (SUP05) in submarine hydrothermal plumes. ISME Journal.
    | doi:10.1038/s41396-022-01195-x |
  • Song M, Schubotz F, Kellermann MY, Hansen CT, Bach W, Teske AP, Hinrichs K-U (2021): Formation of ethane and propane via abiotic reductive conversion of acetic acid in hydrothermal sediments. PNAS 118(47), e2005219118.
    | doi:10.1073/pnas.2005219118 |
  • Geilert S, Albers E, Frick DA, Hansen CT, von Blankenburg F (2021): Systematic changes in serpentine Si isotope signatures across the Mariana forearc – a new proxy for slab dehydration processes. Earth and Planetary Science Letters 575, 117193.
    | doi:10.1016/j.epsl.2021.117193 |
  • Noowong A, Gomez-Saez GV, Hansen CT, Schwarz-Schampera U, Koschinsky A, Dittmar T (2021): Imprint of Kairei and Pelagia deep-sea hydrothermal systems (Indian Ocean) on marine dissolved organic matter. Organic Geochemistry 152, 104141.
    | doi:10.1016/j.orggeochem.2020.104141 |
  • Merder J, Freund JA, Feudel U, Hansen CT, Hawkes JA, Jacob B, Klaproth K, Niggemann J, Noriega-Ortega BE, Osterholz H, Rossel PE, Seidel M, Singer G, Stubbins A, Waska H, Dittmar T (2020): ICBM-OCEAN: Processing ultrahigh-resolution mass spectrometry data of complex molecular mixtures. Analytical Chemistry 92(10), 6832-6838.
    | doi:10.1021/acs.analchem.9b05659 |
  • Hansen CT, Niggemann J, Giebel H-A, Simon M, Bach W, Dittmar T (2019): Biodegradability of hydrothermally altered deep-sea dissolved organic matter. Marine Chemistry 17, 103706
    | doi:10.1016/j.marchem.2019.103706 |
  • Hansen CT, Meixner A, Kasemann SA, Bach W (2017): New insight on Li and B isotope fractionation during serpentinization derived from batch reaction investigations. Geochimica et Cosmochimica Acta 217, 51-79.
    | doi:10.1016/j.gca.2017.08.014 |
  • Hawkes JA, Hansen CT, Goldhammer T, Bach W, Dittmar T (2016): Molecular alteration of marine dissolved organic matter under experimental hydrothermal conditions. Geochimica et Cosmochimica Acta 175, 68-85.
    | doi:10.1016/j.gca.2015.11.025 |
  • Kahl W-A, Hansen CT, Bach W (2016): A new X-ray-transparent flow-through reaction cell for a μ-CT-based concomitant surveillance of the reaction progress of hydrothermal mineral–fluid interactions. Solid Earth 7, 651-658.
    | doi:10.5194/se-7-651-2016 |
  • Hawkes JA, Rossel PE, Stubbins A, Butterfield D, Connely DP, Achterberg EP, Koschinsky A, Chavagnac V, Hansen CT, Bach W, Dittmer T (2015): Efficient removal of recalcitrant deep-ocean dissolved organic matter during hydrothermal circulation. Nature Geoscience 8(11), 856-860.
    | doi:10.1038/ngeo2543 |
  • Kiel S, Hansen C, Nitzsche KN, Hansen BT (2014): Using 87Sr/86Sr ratios to date fossil methane seep deposits: Methodological requirements and an example from the Great Valley Group, California. J. Geol., 122(4), 353-366.
    | doi:10.1086/676594 |
  • Brandmeier M, Erasmi S, Hansen C, Höweling A, Nitzsche K, Ohlendorf T, Mamani M, Wörner G (2013): Mapping patterns of mineral alteration in volcanic terrains using ASTER data and field spectrometry in Southern Peru. J. South Am. Earth Sci., 48, 296-314.
    | doi:10.1016/j.jsames.2013.09.011 |