- Resources
- Inventories
- Cruise inventory
- Report
- 4344
RRS Charles Darwin CD108
Cruise summary report
Cruise Info. | |
Ship name (ship code) | RRS Charles Darwin (74AB) |
Cruise identifier | CD108 |
Cruise period | 1997-09-14 — 1997-10-16 |
Status | Completed |
Port of departure | Southampton, United Kingdom |
Port of return | Lisbon, Portugal |
Purpose | Research |
Objectives | Tobi and Multibeam surveys to examine the overall contribution of large-scale submarine landsliding to the evolution of the Canary Islands. The major aims of the proposed study were:
1) To use swath bathymetry and high-resolution seismic profiling to produce a comprehensive assessment of the effects of catastrophic landslides on the flanks of the Canary Islands. 2) To use Tobi high-resolution sidescan sonar to look in detail at selected areas of landslides to obtain further insights into landsliding processes. 3) To examine the frequency of landslides, their possible triggering mechanism, the geological processes involved in landsliding, the volumes of material involved, and possible relationships to external influences (e.g. sealevel). 4) To determine the wider influence of landslides in the subsidence and uplift history of the Canary Islands and volcanic islands in general. |
Chief scientist | Douglas G Masson (Southampton Oceanography Centre) |
Cruise report | (1.45 MB) |
Ocean/sea areas | |
General | North East Atlantic Ocean (limit 40W) |
Specific | Canary Islands (Tenerife, La Parma & El Heirro) |
Track charts | (0.10 MB) |
Measurements | |
Geology and geophysics | |
Dredge | Quantity: number of hauls = 3 Description: 3 dredges took place. All 3 were unfinished due to problems with the dredging. |
Multi-beam echosounding | Quantity: number of surveys = 1 Description: Multibeam survey of El Julan flank. |
Multi-beam echosounding | Quantity: number of surveys = 1 Description: Multibeam survey took place NNE of Teneriffe. |
Multi-beam echosounding | Quantity: number of surveys = 1 Description: Multibeam survey took place around El Hierro. |
Long/short range side scan sonar | Quantity: number of surveys = 1 Description: TOBI survey at the Saharan Dabris Flow. |