Deutsches Ozeanographisches
Datenzentrum
Inventur der Meteor-Reise M68-1 (DOD-Ref-No.20060127)
Inventory of Meteor Cruise M68-1 (DOD-Ref-No.20060127)
Plattform Platform |
Reise-Nr. Cruise-No. |
Zeitraum Period |
Projekt Project |
Arbeitsgebiet Working area |
---|---|---|---|---|
Meteor | M68-1 | 27.04.2006 - 02.06.2006 | PRIORITY PROGRAM 1144 |
SE Atlantic (Limit 20?W) |
Fahrtleiter Chief Scientist | Institut Institute | Auslaufhafen Port of departure | Einlaufhafen Port of return | Stationskarte Station map | Schiffsroute Trackchart |
---|---|---|---|---|---|
Koschinsky Andrea | International University of Bremen | Bridgetown | Recife |
Ziel der Reise / Objectives of Cruise:
The overall goal of cruise M68/1, which is part of the DFG Special Priority Program 1144, is the investigation of hydrothermal activity on the southern Mid-Atlantic Ridge (MAR, 4-10?S). Previous cruises (JR 65a in 2001, M62/5 in 2004 and M64/1 and CD169 in 2005) yielded the first samples of hydrothermal fields south of the large equatorial fracture zones as well as picking up signals of other possible systems along the ridge. Cruise M68/1 builds on the work of these previous cruises in order to (a) provide a quantitative estimate of the regional distribution of hydrothermal activity between 4?S and 10?S, (b) establish the volcano-tectonic setting of this activity, (c) determine the factors that influence fluid and mineral compositions and temporal variability, and (d) evaluate the role of the large equatorial fracture zones as possible biogeographic filters between the northern and the southern MAR. This includes mapping and exploration for additional hydrothermal vent systems on a regional scale and sampling of hydrothermal vent fluids, associated vent fauna, host rock and sulphides. Hydrothermal prospecting and plume mapping was carried out with CTD deployments and the autonomous underwater vehicle (AUV) ?ABE' from WHOI, which also carried out near-bottom swath mapping and photographic surveys in areas of highest interest. Combined measurements of gases and metals together with physical properties (T, S, turbidity, currents) provide an estimate of the fluxes from the hydrothermal vents. During ROV Quest (MARUM) dives, chemical, biological and geological samples were obtained. Further geological samples were obtained from rock corer and dredge deployments.
Messungen / Measurements
Institut Institute |
Wissenschaftler Scientist |
Anzahl Number |
Einheit Unit |
Typ der Messungen Type of measurements |
Kommentar Comments |
Daten im DOD Data in DOD |
---|---|---|---|---|---|---|
IFMGEO | Duinker J. | 10 | diving(s) | B18 Zoobenthos |
Hydrothermal fauna collection with ROV Quest | no |
IFMGEO | Duinker J. | 8 | diving(s) | B20 Molluscs |
Hydrothermal mollusc collection with ROV Quest | no |
AWI | Walter Ismeni | 1 | transects | D71 Current profiler (e.g. ADCP) |
Vessel mounted ADCP | no |
AWI | Walter Ismeni | 6 | profiles | D71 Current profiler (e.g. ADCP) |
Lowered ACDP tow-yos | no |
AWI | Walter Ismeni | 21 | profiles | D71 Current profiler (e.g. ADCP) |
Lowered ADCP at vertical CTD profiles | no |
AWI | Walter Ismeni | 2 | casts | D90 Other physical oceanographic measurements |
self-contained CTD | no |
IFMGEO | Devey Collin W. | 6 | stations | G01 Dredge |
Redging of volcanic rocks; geochemical analysis | no |
IFMGEO | Devey Collin W. | 20 | stations | G03 Core-rock (no. of cores) |
Volcanite wax corer | no |
NOCS | German C.R. | 3 | diving(s) | G08 Bottom photography |
Bottom photography from 5 m above seafloor during dives of AUV ABE | no |
IFMGEO | Devey Collin W. | 10 | diving(s) | G08 Bottom photography |
Bottom photography of hydrothermal vent sites by ROV Quest | no |
NOCS | German C.R. | 5 | diving(s) | G74 Multi-beam echosounding |
Sm2000 mapping 50 m off-bottom | no |
IFMGEO | Devey Collin W. | 200 | diving(s) | G74 Multi-beam echosounding |
Multibeam echosounding, EM 120/170 | no |
UNIBRE | Koschinsky Andrea | 1 | stations | H00 Stations |
- | yes |
AWI | Walter Ismeni | 31 | profiles | H09 Water bottle stations |
Rosette water sampler: 22 10-L-Niskin bottles | no |
NOCS | German C.R. | 10 | diving(s) | H10 CTD-Stations |
CTD measurements during dives with Autonomouns Underwater Vehicle ABE | no |
AWI | Walter Ismeni | 6 | profiles | H10 CTD-Stations |
Towed undulating CTD casts (Tow-yo) | no |
AWI | Walter Ismeni | 21 | profiles | H10 CTD-Stations |
CTD stations, vertical profiles | no |
NOCS | German C.R. | 10 | diving(s) | H16 Transparency (e.g. transmissometer) |
Turbidity measurements during dives with AUV ABE | no |
AWI | Walter Ismeni | 1 | profiles | H16 Transparency (e.g. transmissometer) |
Turbidity (MAPR at rock corer) | no |
AWI | Walter Ismeni | 6 | profiles | H16 Transparency (e.g. transmissometer) |
Turbidity tow-yos (LSS at CTD and MAPR) | no |
AWI | Walter Ismeni | 21 | profiles | H16 Transparency (e.g. transmissometer) |
Turbidity (LSS at CTD) | no |
UNIBRE | Koschinsky Andrea | 40 | samples | H26 Silicates |
Dissolved silicate in hydrothermal fluids | no |
IBGMHH | Seifert R. | 40 | samples | H28 PH |
pH in hydrothermal fluids | no |
UNIBRE | Koschinsky Andrea | 21 | profiles | H30 Trace elements |
Fe and Mn in hydrothermal plume samples | no |
UNIBRE | Koschinsky Andrea | 40 | samples | H30 Trace elements |
Trace metals in hydrothermal fluids | no |
IBGMHH | Seifert R. | 40 | stations | H32 Isotopes |
C and H Isotopes | no |
IBGMHH | Seifert R. | 40 | stations | H33 Other dissolved gases |
Methane and hydrogen in hydrothermal plumes and fluids | no |
NOCS | German C.R. | 10 | diving(s) | H90 Other chemical oceanographic measurements |
Redox potential measurements during dives with AUV ABE | no |
AWI | Walter Ismeni | 6 | profiles | H90 Other chemical oceanographic measurements |
Redox potential in tow-yo CTDs | no |
AWI | Walter Ismeni | 21 | profiles | H90 Other chemical oceanographic measurements |
Redox potential in vertical and towed CTD profiles | no |
AWI | Walter Ismeni | 263 | samples | H90 Other chemical oceanographic measurements |
Helium samples in hydrothermal plumes and fluids | no |
Verankerungen / Moorings
Institut Institute |
Wissenschaftler Scientist |
Typ der Messungen Type of measurements |
Kommentar Comments |
geogr.Breite Latitude |
geogr.Länge Longitude |
Daten im DOD Data in DOD |
---|---|---|---|---|---|---|
AWI | Walter Ismeni | D01 | Current meter mooring, 3 current meters (40m, 140m + 240m above ground), deployed 15/05/06 | 4° 48.2' S | 12° 22.5' W | no |