Cruise inventory

RRS Challenger CH70

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS Challenger (74CH)
Cruise identifierCH70
Cruise period1990-08-10 — 1990-08-27
StatusCompleted
Port of departureGreat Yarmouth, United Kingdom
Port of returnAberdeen, United Kingdom
PurposeResearch
ObjectivesProduction by chemautotrophy and methylotrophy in the North Sea
Chief scientistPaul Dando (Plymouth Marine Laboratory)
ProjectMAST I/Sulphide and methane based ecosystems
Coordinating bodyMBA (UK)/EC
Ocean/sea areas 
GeneralNorth Sea
SpecificNorth Sea
Measurements 
Chemical oceanography 
Other dissolved gasesQuantity: number of profiles = 7
Description: vertical water profiles (H2, CH4)
Other chemical oceanographic measurementsQuantity: number of profiles = 15
Description: box cores, vertical profiles for ammonia, pH, sulphate, sulphide
Other chemical oceanographic measurementsQuantity: number of samples = 4
Description: bottom gas samples, submersible, composition and stable isotopes
Biology and fisheries 
ZoobenthosQuantity: number of deployments = 15
Description: box cores for zoobenthos
Other biological/fisheries measurementQuantity: number of profiles = 14
Description: methane oxidation rates - vertical profiles
Other biological/fisheries measurementQuantity: number of profiles = 15
Description: sulphate reduction rates, vertical profiles
Geology and geophysics 
Bottom photographyQuantity: number of dives = 4
Description: dives - videos of pockmark bottoms from submersible
Long/short range side scan sonarQuantity: track kilometres = 150
Description: Waverly side scan, Hunter Boomer, 3.5kHz sub-bottom profiler
Multichannel seismic reflectionQuantity: track kilometres = 150
Description: Waverly side scan, Hunter Boomer, 3.5 kHz sub-bottom profiler
Other geological/geophysical measurementsQuantity: number of samples = 4
Description: bottom gas samples, submersible, composition and stable isotopes