RRS Challenger CH82B
Cruise summary report
| Cruise Info. | |
| Ship name (ship code) | RRS Challenger (74CH) |
| Cruise identifier | CH82B |
| Cruise period | 1991-07-17 — 1991-08-01 |
| Status | Completed |
| Port of departure | Hirtshals Havn, Denmark |
| Port of return | Great Yarmouth, United Kingdom |
| Purpose | Research |
| Objectives | Study of sulphide- and methane-based ecosystems. Second 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 |
| Ocean/sea areas | |
| General | Skagerrak |
| Specific | Skagerrak, Danish sector, methane seep areas |
| Track charts |  |
| Measurements | |
| Physical oceanography | |
| CTD stations | Quantity: number of stations = 4 |
| Chemical oceanography | |
| Other dissolved gases | Quantity: number of samples = 4 Description: Soderberg corer samples for sediment gas composition and isotope ratios |
| Other dissolved gases | Quantity: number of samples = 2 Description: water bottle samples for dissolved methane |
| Other dissolved gases | Quantity: number of cores = 14 Description: Box cores for vertical profiles: methane,inorganic/organic C,sulphate reduction |
| Ammonia | Quantity: number of cores = 14 Description: Box cores for vertical profiles of ammonia |
| pH | Quantity: number of cores = 14 Description: Box cores for vertical profiles of pH |
| Isotopes | Quantity: number of cores = 14 Description: Box cores for vertical profiles of isotopes |
| Other chemical oceanographic measurements | Quantity: number of cores = 14 Description: Box core samples for vertical profiles (sulphate reduction/methane oxidation) |
| Biology and fisheries | |
| Benthic bacteria/micro-organisms | Quantity: number of cores = 14 Description: Box core samples |
| Zoobenthos | Quantity: number of samples = 48 Description: cores- multi & boxcore samples for gas seep distrib.,macro- & meiofauna species and biomassy |
| Geology and geophysics | |
| Bottom photography | Quantity: number of deployments = 3 Description: drops - UMEL 35mm stereo camera deployment for bottom photographs |
| Single-beam echosounding | Quantity: number of track lines = 58 Description: Simrad EA500 10kHz echosounding |
| Long/short range side scan sonar | Quantity: number of track lines = 4 Description: lines - Waverley side-scan sonar |
| Single channel seismic reflection | Quantity: number of track lines = 53 Description: lines - BGS deep tow boomer |
| Other geological/geophysical measurements | Quantity: number of samples = 52 Description: cores - box core samples for gas seep distribution |
