- Resources
- Inventories
- Cruise inventory
- Report
- 3763
RRS Charles Darwin CD70
Cruise summary report
Cruise Info. | |
Ship name (ship code) | RRS Charles Darwin (74AB) |
Cruise identifier | CD70 |
Cruise period | 1992-07-11 — 1992-08-02 |
Status | Completed |
Port of departure | Greenock, United Kingdom |
Port of return | Barry, United Kingdom |
Purpose | Research |
Objectives | 1. A multichannel seismic (mcs) and ocean bottom seismometer (OBS) survey of the Reykjanes Ridge active spreading centre at 61-62 degrees north, to investigate the effect of the Iceland plume on active rifting processes.
2. Another mcs and OBS survey of the Edoras Bank continental margin, in an area already drilled by the DSDP. The two surveys will provide crustal constraints on rifting within the sphere of influence of the Iceland Plume: the Reykjanes Ridge at the present day, and the Edoras Bank at the time of continental breakup. |
Chief scientist | Robert S White (University of Cambridge Department of Earth Sciences) |
Cruise report | (0.78 MB) |
Ocean/sea areas | |
General | North East Atlantic Ocean (limit 40W) |
Specific | Reykjanes ridge, Edoras bank continental shelf |
Track charts | (0.04 MB) |
Measurements | |
Geology and geophysics | |
Single-beam echosounding | Quantity: activity duration in days = 18 Description: underway bathymetric profiles (10kHz) |
Single-beam echosounding | Quantity: activity duration in days = 5 Description: 3.5kHz echo sounding |
Multichannel seismic reflection | Quantity: track kilometres = 1100 Description: 48-channel multi-channel seismic profiles |
Seismic refraction | Quantity: number of deployments = 10 Description: Ocean bottom seismometer |
Seismic refraction | Quantity: number of deployments = 6 Description: disposable sonobuoys |
Magnetic measurements | Quantity: activity duration in days = 18 Description: underway magnetics profiles |