RV Cirolana CIR7B/93

Cruise summary report

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Cruise Info.

Ship name (ship code)

RV Cirolana (74CZ)

Cruise identifier

CIR7B/93

Cruise period

1993-07-26 — 1993-08-02

Status

Completed

Port of departure

Lowestoft, United Kingdom

Port of return

Lowestoft, United Kingdom

Objectives

1. To identify and quantify the fate of river-borne nutrients entering the Wash and Humber estuary, examining nutrient distributions and critical processes from the river inputs through to the North Sea in subtidal sediments and overlying waters.
2. To measure factors affecting benthic nutrient recycling in subtidal sediments along a transect across the North Sea.
3. To test new instrumentation designed to determine in-situ the geotechnical properties of sediment.
4. To take nutrient samples over a grid in the Southern North Sea to improve knowledge of the seasonal signal (particularly phosphate) and subsequently compare with historic data.
5. To collect samples for a later chlorophyll intercomparison exercise. Five JoNuS co-workers will be issued with triplicate samples from five stations, of diverse chlorophyll levels.

Chief scientist

Juan Brown (Ministry of Agriculture, Fisheries and Food Lowestoft Fisheries Laboratory)

Project

JONUS

Coordinating body

MAFF

Cruise report

(0.12 MB)

Ocean/sea areas

General

North Sea

Specific

Southern N Sea, Wash and Humber Estuary

Track charts

Measurements

Physical oceanography

Water bottle stations

Quantity: number of stations = 74

CTD stations

Quantity: number of stations = 53

Chemical oceanography

Phosphate