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Tim Haarmann
Name: | Tim Haarmann | |
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Department: | General Geology/Marine Geology | |
Job: | PhD student within the International Graduate College EUROPROX | |
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Phone: | +49 421 218 - 65665 | |
E-Mail: |
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Research interest
| I am a member of the European Graduate College 'Proxies in Earth History' (EUROPROX) and am conducting my PhD project under the advice of Prof. Dr. Gerold Wefer and Dr. Torsten Bickert and with Dr. Gerald Ganssen (VU Amsterdam) as a project partner. The EUROPROX approach of developing and testing indicators of past environmental changes (proxies) is mirrored in my personal research interest: The basis of my work is the further improvement of the Mg/Ca temperature proxy in planktonic foraminifers. In a sediment study, I work on better understanding the ecology, calcification depth and seasonality of the planktonic foraminifers G. ruber, G. bulloides and G. inflata off NW Africa. In particular, I am interested in the Mg/Ca ratio of single shells of these species, as their short lifespan (~1 month) makes them potential recorders of short term temperature variations. Knowledge gained from this study is essential for the second part of my project. In this work, I apply the Mg/Ca proxy (as well as oxygen isotopes) of single shells of planktonic foraminifers to the sedimentary record. I wish to better describe the history of upwelling and water stratification off NW Africa since the Last Glacial Maximum (LGM). Understanding of this oceanographic system is of particular interest to paleoclimatic research, as it constitutes one of the most productive areas of the oceans and may serve as an analog for other eastern-boundary upwelling systems. |
Curriculum vitae
| Since 09.2008 | PhD student within the International Graduate College EUROPROX. Advisors: Prof. Dr. G. Wefer, Dr.Torsten Bickert |
| 10.2003-08.2008 | Studies of Geography at the Universities of Bremen (Germany) and Bergen (Norway) Title of the diploma thesis: Mineral authigenesis in and above methane rich sediments of the Black Sea - A comparative study between a diffusively governed environment and a microbial mat. Advisor: PD Dr. S. Kasten, AWI Bremerhaven |
| 10.2001-10.2003 | Studies of Biology at the University of Bremen, Preliminary diploma |
| 06.2000 | Abitur, Zeppelin-Gymnasium Lüdenscheid |
Expeditions
| RV Poseidon 366/1 (03.05.08-19.05.08, Las Palmas-Las Palmas) Proxy Education and Research cruise off Galicia, Morocco and Mauritania Chief scientist: S. Kasten (AWI Bremerhaven) |
| RV Heincke 277 (Bremerhaven-Bremerhaven) Chief scientist: S. Kasten (AWI Bremerhaven) |
| RV Meteor 73/1 (21.07.07-11.08.07, Cadiz-Genoa) Landslides and hydrothermal systems in the Western Mediterranean Sea Chief scientist: A. Kopf (University Bremen) |
Attended courses
| Leadership Skills - Sabine Hatzl |
| Past Global Change Reconstruction & Modelling Techniques - Urbino Summer School in Paleoclimatology, the European Consortium for Ocean Research Drilling and the School of Rock |
| Introductory Course to Ocean Drilling Sciences & Paleoclimate - Urbino Summer School in Paleoclimatology, the European Consortium for Ocean Research Drilling and the School of Rock |
| MATLAB for Geoscientists - Dave Heslop |
| Introductory course in Marine Sciences (Physical Oceanography and Climate, Biogeochemical Oceanography and Climate) - ECOLMAS joint program |
| Scientific writing - R. Rendel-Bühring and P. Assmy |
| Statistical methods - M. José Ruiz Chancho |
Publications/Conference contributions
| Haarmann, T., Hathorne, E. C., Mohtadi, M., Groeneveld, J., Kölling, M., Bickert, T. (2011). Mg/Ca ratios of single planktonic foraminiferal shells and the potential to reconstruct the thermal seasonality of the water colum, Paleoceanography. |
| Haarmann, T., Hathorne, E., Groeneveld, J., Mohtadi, M., and Bickert, T. (2010) Seasonality of surface and thermocline seawater recorded by Mg/Ca in single specimens of planktonic foraminifera (Oral), Forams 2010, 5-10 Sep 2010, Bonn, Germany. |
| Haarmann, T., Hathorne, E., Groeneveld, J., Mohtadi, M., and Bickert, T. (2009) Is the seasonality of seawater temperature recorded by the Mg/Ca ratio of single specimens of planktonic foraminifera? (Poster), EGU General Assembly, 19-24 Apr 2009, Vienna, Austria. |
| Kopf, A., and cruise participants (2008) Report and preliminary results of Meteor Cruise M73/1: LIMA-LAMO (Ligurian Margin Landslide Measurements & Observatory), Cadiz, 22.07.2007-Genoa, 11.08.2007), University of Bremen, 170 pp. |
| Kopf, A., Kasten, S., Bogus, K., Haarmann, T., Blees, J. (2008) Geochemical evidence for groundwater-charging of slope sediments: The Nice airport landslide and tsunami revisited, EGU General Assembly, 13-18 Apr 2008, Vienna, Austria. |