RRS Discovery D235C
Cruise summary report
| Cruise Info. | |
| Ship name (ship code) | RRS Discovery (74E3) |
| Cruise identifier | D235C |
| Cruise period | 1998-07-15 — 1998-08-03 |
| Status | Completed |
| Port of departure | Southampton, United Kingdom |
| Port of return | Southampton, United Kingdom |
| Purpose | Research |
| Objectives | Multi-channel seismic investigation of the accretionary processes at the Reykjanes Ridge (Mid-Atlantic Ridge). To detail the geometry and extent of the crustal melt body already imaged duirng CD81 on the RRS Charles Darwin.
Main tasks: 1. Acquire 34 across-axis and 5 along-axis multi-channel seismic profiles over an axial volcanic ridge segment. 2. Acquire gravity and magnetic data along all profiles. 3. Acquire 24 XBT measurements. 4. Test deployment of a low-frequency electromagnetic underwater receiver (LEMUR). |
| Chief scientist | Christine Peirce (University of Durham, Department of Geological Sciences) |
| Cruise report |  (7.85 MB) |
| Ocean/sea areas | |
| General | North Atlantic Ocean |
| Specific | Reykjanes Ridge |
| Track charts |  |
| Measurements | |
| Physical oceanography | |
| Bathythermograph | Quantity: number of profiles = 24 Description: XBT drops with TS probes - data sent to Hydrographic Office |
| Geology and geophysics | |
| Multichannel seismic reflection | Quantity: track kilometres = 1333 Description: Multi-channel (96) seismic lines - 15 sec firing rate - 12 gun array |
| Gravity measurements | Quantity: track kilometres = 1333 Description: Gravity data for entire cruise |
| Magnetic measurements | Quantity: track kilometres = 1333 Description: Magnetic data along seismic lines |
| Moorings, landers, buoys | |
| Geology and geophysics | |
| Other geological/geophysical measurements | 57° 24' 59" N 31° 36' 0" W — Deployed and recovered electromagnetic receiver |