Hainbucher, Dagmar; Emeis, Kay-Christian (2016): Physical oceanography and ADCP measurements during METEOR cruise M71/3 [dataset publication series]. Institut für Meereskunde, Universität Hamburg, PANGAEA, https://doi.org/10.1594/PANGAEA.856630
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Abstract:
Work on M71-3 aimed to answer the question whether phosphate loss and incomplete utilisation of nitrate on the one hand, or dinitrogen fixation on the other hand are responsible for unusual nutrient ratios in the water column of the eastern Mediterranean Sea. We investigated the reason for unusually depleted 15N/14N ratios in dissolved nitrate, suspended matter and surface sediments of that oligotrohic ocean basin. During a total of 18 days of ship time on R/V METEOR, Leg 3 OF M71 performed water column and surface sediment work in the eastern Mediterranean Sea (Heraklion-Istanbul). Stations will be aligned on one E-W and two N-S transects and sampled all major basins and water masses. On stations, CTD casts were obtained and water samples for nutrient concentrations were taken. These samples and those of suspended matter and surface sediment will be analysed for the stable nitrogen isotope composition of dissolved nitrate, suspended matter, and surface sediments. In addition, phytoplankton samples were be taken and experiments were be carried out to determine N2 fixation rates, genetic expressions of nitrogen fixation, and the composition of microbial and algal assemblages. One mooring of sediment traps (Ierapetra Deep) was be deployed and will be recovered in September 2007 to monitor changes in particle flux and its isotope signature over a seasonal cycle.
Related to:
Christiansen, Bernd; Türkay, Michael; Emeis, Kay-Christian (2015): Biology and biogeochemistry of the Eastern Mediterranean Sea - Cruise No. M71 - December 11, 2006 - February 4, 2007 - Heraklion (Greece) - Istanbul (Turkey). METEOR-Berichte, DFG-Senatskommission für Ozeanographie, M71, 132 pp, https://doi.org/10.2312/cr_m71
Coverage:
Median Latitude: 37.043451 * Median Longitude: 24.997166 * South-bound Latitude: 33.666000 * West-bound Longitude: 15.700900 * North-bound Latitude: 41.012000 * East-bound Longitude: 29.001000
Date/Time Start: 2007-01-01T01:03:00 * Date/Time End: 2007-02-04T00:00:00
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
2 datasets
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Datasets listed in this publication series
- Hainbucher, D; Emeis, K-C (2016): Shipboard acoustic doppler current profiling during METEOR cruise M71/3, link to NetCDF file. https://doi.org/10.1594/PANGAEA.856624
- Hainbucher, D; Emeis, K-C (2016): Physical oceanography during METEOR cruise M71/3. https://doi.org/10.1594/PANGAEA.856629