Cruise inventory

RRS Challenger 2293H (CH104B)

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS Challenger (74CH)
Cruise identifier2293H (CH104B)
Cruise period1993-06-21 — 1993-07-05
StatusCompleted
Port of departureLerwick, United Kingdom
Port of returnUllapool, United Kingdom
PurposeResearch
Objectives1. To investigate the horizontal distribution of sandeel shoals around Shetland and Fair Isle, including a detailed investigation of the region around Sumburgh. Sandeel distribution between Shetland and Lewis will also be investigated if time is available.
2. To investigate the relationship between seabird foraging patterns and the distribution of their prey.
3. To carry out a hydrographic and late larval survey between Shetland and Lewis.
Chief scientistPeter J Wright (Scottish Office Agriculture and Fisheries Department Aberdeen Marine Laboratory)
Cruise reportRRS Challenger 2293H (CH104B) cruise report ch104_2293h.pdf — access key 'C' (0.17 MB) 
Ocean/sea areas 
GeneralNorth Sea
North East Atlantic Ocean (limit 40W)
SpecificShetland and Fair Isle
Track chartsRRS Challenger 2293H (CH104B) cruise track — trk4048a.html RRS Challenger 2293H (CH104B) cruise track — trk4048b.html RRS Challenger 2293H (CH104B) cruise track — trk4048c.html
Measurements 
Physical oceanography 
Surface measurements underway (T,S)Quantity: track kilometres = 1852
CTD stationsQuantity: number of stations = 30
Description: and multisampler
Transparency (eg transmissometer)Quantity: 30
Chemical oceanography 
OxygenQuantity: 30
Biology and fisheries 
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: 30
BirdsQuantity: activity duration in hours = 16
Description: seabird observation
Demersal fishQuantity: number of hauls = 42
Description: trawls
Acoustic reflection on marine organisms.Quantity: track kilometres = 833.4
Description: echosurvey
Geology and geophysics 
GrabQuantity: number of samples = 40