Deutsches Ozeanographisches
Datenzentrum Inventur der Johan Hjort-Reise 2004204 (DOD-Ref-No.20041216)
Inventory of Johan Hjort Cruise 2004204 (DOD-Ref-No.20041216)

Plattform
Platform
Reise-Nr.
Cruise-No.
Zeitraum
Period
Projekt
Project
Arbeitsgebiet
Working area
Johan Hjort 2004204 19.03.2004 - 18.04.2004   North Atlantic Ocean  

Fahrtleiter
Chief Scientist
Institut
Institute
Auslaufhafen
Port of departure
Einlaufhafen
Port of return
Stationskarte
Station map
Schiffsroute
Trackchart
Heino Mikko Institute of Marine Research Bergen Bergen Bergen   

Ziel der Reise / Objectives of Cruise:

An annual acoustic survey in the spawning area of blue whiting, west of the British Isles. The objectives are 1) Estimation of the size of blue whiting spawning stock with acoustic methods complemented with trawl sampling. 2) Collecting biological samples and mezsurements on blue whiting. 3) Hydrographic observations.

Messungen / Measurements

Institut
Institute
Wissenschaftler
Scientist
Anzahl
Number
Einheit
Unit
Typ der Messungen
Type of measurements
Kommentar
Comments
Daten im DOD
Data in DOD
IMRN Heino Mikko 43 hauls B13
Eggs/larvae
80 cm plankton dip net 0-200 m no
IMRN Heino Mikko 32 hauls B14
Pelagic fish
Pelagic trawl hauls in 150-700 m depths no
IMRN Heino Mikko 4 hauls B19
Demersal fish
Bottom trawl hauls in 350-500 m depth no
IMRN Heino Mikko 3315 n miles B28
Acoustic reflection on marine organisms
Fisheries acoustics along the cruise track with EK500 echosounder (18&38 kHz) no
IMRN Soeiland Henrik 103 stations H10
CTD-Stations
CTD stations with SBE911 sonde no
IMRN Soeiland Henrik 3950 n miles H71
Surface measurements underway (T, S)
Termosalinograph (SBE21) no
23.3.2024