vinu
29th June 2005, 12:24 AM
credit:http://www.nioz.nl/nioz_nl/0713e1a8df2ec14aef164e0b2b39fb19.php
Date of disposition: June 15th 2005.
The Royal Netherlands Institute for Sea Research (NIOZ) is the leading research institute in the Netherlands for the basic marine sciences. Five departments (Physical Oceanography, Marine Chemistry and Geology, Marine Biogeochemistry and Toxicology, Biological Oceanography and Marine Ecology) carry out the multidisciplinary research of the institute. Approximately 250 persons are currently appointed at the NIOZ. NIOZ has a large variety of instrumentation and is operating modernly equipped research vessels for coastal and ocean studies. The institute is associated with the Netherlands Organisation for Scientific Research (NWO); it is located on the Wadden Island of Texel, close to the mainland.
Research within the department of Marine Chemistry and Geology (MCG) aims to develop a mechanistic view on the biogeochemical cycling of elements in the ocean and across its boundaries. In the department two positions are available. We offer a dynamic and exciting working environment at the forefront of chemical oceanography, with many international contacts as well as cruises to the ocean. We have a vacancy for a
PhD student (m/f)
Temperature and salinity proxies of ocean thermohaline circulation and climate change: development and verification
In order to reliably interpret the sedimentary record of temperature and salinity, we propose to couple the results from laboratory experiments and associated modeling to the seasonal productivity of two proxy families across large gradients in the salinity-temperature field of the modern ocean.
Objectives are:
1. Develop empirical relationships for Mg/Ca-18O/13C incorporation into foraminiferal, coral and synthetic carbonates in contrasting salinity-temperature fields ( “distribution coefficients” ) and determine vital effects during calcification in their depth habitat.
2. Determine and model the bio-physical processes controlling calcification depth and the temporal fluxes to the sediment of the divalent cation proxies carried by the biogenic carbonate species.
3. Determine and model the effect of early diagenesis (dissolution) and sediment burial on the divalent cation composition of biogenic carbonates under controlled field conditions.
4. Compare and integrate with organic geochemical proxies of temperature (Uk37, TEX86) and salinity (δD of alkenones) to validate the robustness of biogeochemical proxy-relationships for thermo-haline circulation and climate change.
Further information can be obtained from Dr. G.J.A. Brummer, tel: +31 222 369442.
We offer a full-time PhD position for 4 years, with monthly salary starting at € 1813,- in the first year to € 2394,- in the last year of appointment. We also offer a pension scheme, a health insurance allowance, a yearly 8% vacation allowance, year-end bonus of 4,1 % per year and flexible employment conditions. Conditions are based on the Collective Employment Agreement of the Research Institutes.
Applications. Applicants should sent an application letter, CV and reference list to the Personnel Department within 2 weeks, attended to ms. J. Bredewold, Royal Netherlands Institute for Sea Research, P.O. Box 59, 1790 AB Den Burg, Texel, The Netherlands. Closing date: July 8th 2005 .
Date of disposition: June 15th 2005.
The Royal Netherlands Institute for Sea Research (NIOZ) is the leading research institute in the Netherlands for the basic marine sciences. Five departments (Physical Oceanography, Marine Chemistry and Geology, Marine Biogeochemistry and Toxicology, Biological Oceanography and Marine Ecology) carry out the multidisciplinary research of the institute. Approximately 250 persons are currently appointed at the NIOZ. NIOZ has a large variety of instrumentation and is operating modernly equipped research vessels for coastal and ocean studies. The institute is associated with the Netherlands Organisation for Scientific Research (NWO); it is located on the Wadden Island of Texel, close to the mainland.
Research within the department of Marine Chemistry and Geology (MCG) aims to develop a mechanistic view on the biogeochemical cycling of elements in the ocean and across its boundaries. In the department two positions are available. We offer a dynamic and exciting working environment at the forefront of chemical oceanography, with many international contacts as well as cruises to the ocean. We have a vacancy for a
PhD student (m/f)
Temperature and salinity proxies of ocean thermohaline circulation and climate change: development and verification
In order to reliably interpret the sedimentary record of temperature and salinity, we propose to couple the results from laboratory experiments and associated modeling to the seasonal productivity of two proxy families across large gradients in the salinity-temperature field of the modern ocean.
Objectives are:
1. Develop empirical relationships for Mg/Ca-18O/13C incorporation into foraminiferal, coral and synthetic carbonates in contrasting salinity-temperature fields ( “distribution coefficients” ) and determine vital effects during calcification in their depth habitat.
2. Determine and model the bio-physical processes controlling calcification depth and the temporal fluxes to the sediment of the divalent cation proxies carried by the biogenic carbonate species.
3. Determine and model the effect of early diagenesis (dissolution) and sediment burial on the divalent cation composition of biogenic carbonates under controlled field conditions.
4. Compare and integrate with organic geochemical proxies of temperature (Uk37, TEX86) and salinity (δD of alkenones) to validate the robustness of biogeochemical proxy-relationships for thermo-haline circulation and climate change.
Further information can be obtained from Dr. G.J.A. Brummer, tel: +31 222 369442.
We offer a full-time PhD position for 4 years, with monthly salary starting at € 1813,- in the first year to € 2394,- in the last year of appointment. We also offer a pension scheme, a health insurance allowance, a yearly 8% vacation allowance, year-end bonus of 4,1 % per year and flexible employment conditions. Conditions are based on the Collective Employment Agreement of the Research Institutes.
Applications. Applicants should sent an application letter, CV and reference list to the Personnel Department within 2 weeks, attended to ms. J. Bredewold, Royal Netherlands Institute for Sea Research, P.O. Box 59, 1790 AB Den Burg, Texel, The Netherlands. Closing date: July 8th 2005 .