RRS Shackleton S8/77,Leg 2
Cruise summary report
| Cruise Info. | |
| Ship name (ship code) | RRS Shackleton (74SF) |
| Cruise identifier | S8/77,Leg 2 |
| Cruise period | 1977-07-04 — 1977-07-26 |
| Status | Completed |
| Port of departure | Aberdeen, United Kingdom |
| Port of return | Reykjavík, Iceland |
| Purpose | Research |
| Objectives | 1) Observation of the micro-eathquakes on the Reykjanes Ridge with an array of Ocean Bottom Seismographs near 59½° N.
2) Determination of the structure of the ridge by means of three long range seismic refraction profiles positioned along the 0,4 and 9 My isochrons. 3) Projectile experiment. Ten projectiles were dropped to the sea bed to see whether their impacts could be detected by the OBS. 4) Temperature measurement. An IOS temperature- telemetering pinger was towed near the seafloor to look for temperature anomalies in the water which might be associated with geothermal springs |
| Chief scientist | Tim J G Francis (Institute of Oceanographic Sciences Wormley Laboratory) |
| Cruise report |  (0.47 MB) |
| Ocean/sea areas | |
| General | North East Atlantic Ocean (limit 40W) |
| Track charts |  |
| Measurements | |
| Physical oceanography | |
| Subsurface temperature and salinity measurements | |
| Geology and geophysics | |
| Single-beam echosounding | Quantity: 200 |
| Single channel seismic reflection | Quantity: 100 |
| Seismic refraction | Quantity: 180 |
| Gravity measurements | Quantity: track kilometres = 370.4 |
| Magnetic measurements | Quantity: track kilometres = 370.4 |
