Deutsches Ozeanographisches
Datenzentrum
Inventur der Maria S. Merian-Reise MSM49 (DOD-Ref-No.20150282)
Inventory of Maria S. Merian Cruise MSM49 (DOD-Ref-No.20150282)
Plattform Platform |
Reise-Nr. Cruise-No. |
Zeitraum Period |
Projekt Project |
Arbeitsgebiet Working area |
---|---|---|---|---|
Maria S. Merian | MSM49 | 28.11.2015 - 21.12.2015 | North Atlantic Ocean |
Fahrtleiter Chief Scientist | Institut Institute | Auslaufhafen Port of departure | Einlaufhafen Port of return | Stationskarte Station map | Schiffsroute Trackchart |
---|---|---|---|---|---|
Christiansen Bernd | Institut fur Hydrobiologie und Fischereiwissenschaft der Universitat Hamburg | Las Palmas | Mindelo |
Ziel der Reise / Objectives of Cruise:
The focus of cruise MSM49 was to assess the impact of the oxygen minimum zone (OMZ) and of a shallow topographic feature, Senghor Seamount, on the abundance, distribution, diversity and trophic structure of the medium-sized pelagic fauna (macrozooplankton, micronekton, and squids). Using a combination of optical and net sampling techniques, we investigated the ecological zonation of these oceanographic features in the Cape Verde area and performed collections for detailed foodweb studies. The cruise is embedded in past and future work in the area to understand the communities and ecology of Senghor Seamount and to establish a baseline of pelagic communities around the eastern tropical Atlantic oxygen minimum zone. This will contribute to better understand how environmental change in the Eastern Tropical Atlantic, in particular change in the OMZ, impact pelagic communities and the biogeochemical cycle and the foodweb they are part of. The cruise started in Las Palmas on 28. Nov 2015. The first sampling station was the CVOO (Cape Verde Oceanic Observatory) north of Cape Verde, which was reached on 1. Dec 2015. The sampling scheme included CTD-rosette, 1m2 and 10m2-MOCNESS, IKMT, WP3, PELAGIOS and UVP, down to a depth of 1000 m. Two further stations were sampled to the north of Cape Verde, before we reached Senghor Seamount. This seamount is located NE of the island of Sal and rises from 3300 m to a minimum summit depth of 100 m. We sampled the northwestern and southeastern slopes and the summit, before we proceeded to the southeast to search for the core of a cyclonic eddy, which had been tracked by satellite for the past week. The core with a lens of very low oxygen concentrations was found on 11. Dec and sampled successfully for the next two days. The last three stations were located in the area of the most strongly pronounced oxygen minimum zone to the east and south of Cape Verde. Sampling at the last station was finished on 20. Dec, and Maria S. Merian arrived in the port of Mindelo on 21. Dec at 08:30.
Messungen / Measurements
Institut Institute |
Wissenschaftler Scientist |
Anzahl Number |
Einheit Unit |
Typ der Messungen Type of measurements |
Kommentar Comments |
Daten im DOD Data in DOD |
---|---|---|---|---|---|---|
MADUN | Kaufmann Manfred | 26 | deployment | B02 Phytoplankton pigments (e.g. chlorophyll, fluorescence) |
from CTD-rosette. 19.12.2015 | no |
GEOMAH | Javidpour Jamileh | 26 | deployment | B03 Seston |
from CTD-rosette for stable isotopes. 19.12.2015 | no |
MADUN | Kaufmann Manfred | 9 | deployment | B08 Phytoplankton |
Apstein net deployments. 19.12.2015 | no |
MADUN | Kaufmann Manfred | 26 | deployment | B08 Phytoplankton |
from CTD-rosette. 19.12.2015 | no |
IHFHH | Christiansen Bernd | 21 | deployment | B09 Zooplankton |
vertical UVP (UW vision profiler) profiles in combination with CTD rosette. 19.12.2015 | no |
GEOMAH | Hauss Helena | 26 | deployment | B09 Zooplankton |
UVP (UW vision profiler) tows in combination with PELAGIOS. 19.12.2015 | no |
GEOMAH | Hauss Helena | 28 | deployment | B09 Zooplankton |
PELAGIOS (towed UW camera system) profiles. 19.12.2015 | no |
GEOMAH | Hoving Hendrik Jan Thies | 38 | deployment | B09 Zooplankton |
1m2-MOCNESS, 9 nets each, for meso/macrozooplankton. 19.12.2015 | no |
GEOMAH | Javidpour Jamileh | 18 | deployment | B09 Zooplankton |
WP3 deployments for gelatinous macrozooplankton. 19.12.2015 | no |
IHFHH | Christiansen Bernd | 5 | deployment | B11 Nekton |
IKMT hauls for micronekton. 19.12.2015 | no |
IHFHH | Christiansen Bernd | 16 | deployment | B11 Nekton |
10m2-MOCNESS, 5 nets each, for micronekton. 19.12.2015 | no |
GEOMAH | Hauss Helena | 19 | day(s) | D71 Current profiler (e.g. ADCP) |
continuous. 19.12.2015 | no |
IHFHH | Christiansen Bernd | 1 | n miles | G90 Other geological or geophysical measurements |
EM 122, ADCP38+75 kHz | yes |
GEOMAH | Hauss Helena | 26 | deployment | H10 CTD-Stations |
CTD casts to 1000 m. 19.12.2015 | no |
IHFHH | Christiansen Bernd | 1 | n miles | H80 Other physical measurements |
Underway measurements during the whole trip such as coordinates, depth, meteorological parameter and so on | yes |