Tridens wk 51 2020

Cruise summary report

Cruise Info.
Ship name (ship code)	Tridens (64T2)
Cruise identifier	wk 51 2020
Cruise period	2020-12-14 — 2020-12-17
Status	Completed
Port of departure	Scheveningen, Netherlands
Port of return	Scheveningen, Netherlands
Purpose	Research
Objectives	The cruise is part of the ICES coordinated herring larvae surveys, which are carried out in September/October and December/January. The survey covers the southern North Sea. In each ICES rectangle 9 double oblique hauls are made with the Gulf VII plankton torpedo with mounted CTD. The Gulf VII is fitted with a 20 cm diameter conical nose and a standard net of 280 μm mesh size. All larvae data are stored in the ICES egg and larvae database.
Chief scientist	Cindy J G van Damme (Institute for Marine Resources and Ecosystem Studies, IJmuiden)
Project	ICES Herring Larvae Survey
Coordinating body	International Council for the Exploration of the Sea (ICES)
Ocean/sea areas
General	English Channel North Sea
Specific	Southern North Sea and English Channel
Measurements
Physical oceanography
CTD stations	Quantity: number of profiles = 78 Description: CTD profiles
Biology and fisheries
Phytoplankton	Quantity: number of hauls = 78 Description: Gulf VII oblique plankton trawl
Zooplankton	Quantity: number of hauls = 78 Description: Gulf VII oblique plankton trawl