| Plattform Platform |
Reise-Nr. Cruise-No. |
Zeitraum Period |
Projekt Project |
Arbeitsgebiet Working area |
|---|---|---|---|---|
| Alkor | 328 | 08.10.2008 - 29.10.2008 | SGNS |
Southern North Sea |
| Fahrtleiter Chief Scientist | Institut Institute | Auslaufhafen Port of departure | Einlaufhafen Port of return | Stationskarte Station map | Schiffsroute Trackchart |
|---|---|---|---|---|---|
| Linke, P. Peter | Leibniz-Institut fur Meereswissenschaften an der Universitat Kiel | Kiel | Kiel |
Ziel der Reise / Objectives of Cruise:
The aim of the project is to detect sites of active fluid and gas seepage in the Southern German North Sea, to decipher and map possible migration pathways in the Pleistocene and Holocene sediments, to quantify gas fluxes in the water column and analyse their chemical composition. From seismic investigations it was expected that gas discharge is not diffuse but connected to the near surface (Pleistocene/Holocene). The chemical and isotopic composition of the discharged gases and fluids in regard to trace gases (e.g. CH4, light HC, CO2), nutrients (PO4, NH4), and other geochemical tracers (e.g. pH, Cl, PAH) were measured. They can provide information about the origin and quality of deep and shallow fluid/gas forming processes. Geochemical samples, hydro/sediment acoustic data, and sedimentological samples recovered during the AL328 cruise will be analyzed and correlated to local sediment stratigraphy, and hydrography. Results will be discussed concerning their ability in qualifying the CO2/N2-risk of exploration of hydrocarbon reservoirs.
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 | McGinnis Daniel F. | 3 | tracks | D71 Current profiler (e.g. ADCP) |
ADCP used for velocity, echo amplitude, backscatter, and beam correlation data | no |
| IFGKI | Schwarzer Klaus | 47 | samples | G02 Grab |
Sedimentology for groundtruthing and geochemical analysis | no |
| IFGKI | Schwarzer Klaus | 10 | cores | G04 Core-soft bottom (no. of cores) |
Sediment stratigraphy and geochemical analysis | no |
| IFMGEO | Linke, P. Peter | 3 | tracks | G08 Bottom photography |
Digital photographs for image analysis and CTD-data | no |
| IFGKI | Schwarzer Klaus | 727 | n miles | G24 Long/short range side scan sonar |
Seafloor mapping by a combination of sidescan sonar with an inferometric swath bathymetry | no |
| IFGKI | Schwarzer Klaus | 727 | n miles | G72 Geophysical measurements made at depth (below near surface and above seafloor) |
Chirp sub-bottom profiler and parametric echo-sounder | no |
| IFMGEO | Schmidt Mark | 18 | stations | H09 Water bottle stations |
Geochemical analysis of gasses, nutrients and other geochemical tracers | no |
| IFMGEO | McGinnis Daniel F. | 18 | stations | H10 CTD-Stations |
Physical oceanography | no |
| IFMGEO | Linke, P. Peter | 3 | tracks | H11 Sub-surface measurements underway (T, S) |
Digital photographs for image analysis and CTD-data | no |
| IFMGEO | Schmidt Mark | 18 | stations | H33 Other dissolved gases |
Geochemical analysis of gasses, nutrients and other geochemical tracers | no |
| IFMGEO | Schmidt Mark | 18 | stations | H74 Carbon dioxide |
Geochemical analysis of gasses, nutrients and other geochemical tracers | no |