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RRS Challenger CH82A
Cruise summary report
Cruise Info. | |
Ship name (ship code) | RRS Challenger (74CH) |
Cruise identifier | CH82A |
Cruise period | 1991-07-12 — 1991-07-17 |
Status | Completed |
Port of departure | Troon, United Kingdom |
Port of return | Hirtshals Havn, Denmark |
Purpose | Research |
Objectives | Study of sulphide- and methane-based ecosystems. First part of two leg cruise |
Chief scientist | Paul Dando (Marine Biological Association of the UK) |
Project | MAST 0044 Sulphide and methane based ecosystems |
Coordinating body | MBA, Plymouth |
Ocean/sea areas | |
General | North Sea |
Specific | North Sea (UK Block 15/25, pockmarks in the Witch Ground Basin) |
Track charts | |
Measurements | |
Physical oceanography | |
CTD stations | Quantity: number of stations = 17 |
Current profiler (eg ADCP) | Quantity: number of stations = 13 Description: ADCP measurements associated with dissolved hydrogen and CH4 stations |
Chemical oceanography | |
Other dissolved gases | Quantity: number of stations = 13 Description: dissolved hydrogen and CH4 |
Biology and fisheries | |
Zoobenthos | Quantity: number of samples = 30 Description: box core samples for species composition and biomass of macro- & meiofauna |
Geology and geophysics | |
Single-beam echosounding | Quantity: number of track lines = 27 Description: lines - Simrad EA500 10kHz echosounding |
Long/short range side scan sonar | Quantity: number of track lines = 25 Description: lines - Waverley side scan survey for shallow gas and seeps |
Single channel seismic reflection | Quantity: number of track lines = 25 Description: lines - BGS deep tow boomer survey for shallow gas and seeps |