| Plattform Platform |
Reise-Nr. Cruise-No. |
Zeitraum Period |
Projekt Project |
Arbeitsgebiet Working area |
|---|---|---|---|---|
| Walther Herwig III | WH354 | 02.05.2012 - 22.05.2012 | JADRAN |
Baltic Sea |
| Fahrtleiter Chief Scientist | Institut Institute | Auslaufhafen Port of departure | Einlaufhafen Port of return | Stationskarte Station map | Schiffsroute Trackchart |
|---|---|---|---|---|---|
| Bottcher Uwe | Thunen-Institut fur Ostseefischerei | Warnemunde | Bremerhaven |
Ziel der Reise / Objectives of Cruise:
The cruise was part of the Baltic International Spring Survey (BASS). The main pelagic species of interest was sprat. Timing, surveying area and the principal methods of investigations are internationally co-ordinated by the ICES-WGBIFS. Germany covered the ICES Subdivisions 24, 25 and the western parts of Subdivisions 26 and 28. The acoustic equipment was an echosounder EK60with a used frequency of 38 kHz. The hydroacoustic measurements were conducted on parallel transects with a distance of 15 - 18 nautical miles. The survey speed was 10 knots. To identify the fish targets, trawls hauls were conducted with the pelagic gear 'PSN 205'.The acoustic investigations and the fishing hauls were carried out in the time from 4:00 to 18:00 UTC. CTD-profiles were taken after each trawl station or at least after every 15 miles surveyed distance.
Messungen / Measurements
| Institut Institute |
Wissenschaftler Scientist |
Anzahl Number |
Einheit Unit |
Typ der Messungen Type of measurements |
Kommentar Comments |
Daten im DOD Data in DOD |
|---|---|---|---|---|---|---|
| VTIOSF | Limmer Bente | 8 | hauls | B14 Pelagic fish |
bottom trawl to catch semipelagic fish, species composition, length, weight, herring, sprat, cod otolith samples | no |
| VTIOSF | Bottcher Uwe | 62 | hauls | B14 Pelagic fish |
pelagic trawl, species composition, length, weight, herring, sprat, cod otolith samples | no |
| VTIOSF | Bottcher Uwe | 1550 | km | B28 Acoustic reflection on marine organisms |
hydroacoustic tracks for pelagic fish stock assessment | no |
| VTIOSF | Bottcher Uwe | 58 | samples | H10 CTD-Stations |
Water bottle sampling to estimate the oxygen content (Winkler Titration) and salinity | no |
| VTIOSF | Bottcher Uwe | 139 | profiles | H10 CTD-Stations |
CTD/O2-probe casts, Temperature, Salinity, Oxygen | no |
| VTICUX | Fricke Nikcolai | 1 | stations | P13 Contaminants in organisms |
Organic and inorganic contaminats in fish | no |