Cruise inventory

RRS Charles Darwin CD14A

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS Charles Darwin (74AB)
Cruise identifierCD14A
Cruise period1986-07-29 — 1986-08-10
Port of departureJeddah, Saudi Arabia
Port of returnVictoria, Seychelles
ObjectivesGravity, magnetic and bathymetry surveys; exhibition at Jedda (not all objectives achieved).

Cruise initiated as a three day extension to the Patras to Seychelles passage leg and intended for geophysical (gravity, magnetic and bathymetry) site surveying in the Red Sea for the Ocean drilling Program. The site surveying depended on gaining permissions to work in Saudi Arabian, Sudanese and Ethiopian waters. Permission was only granted for Sudanese waters of less than 1000 m depth. Since all high priority drill sites were in the central rift area, the original objectives for the cruise were abandoned.

An alternative programme was adopted and designed to map the poorly known older series of magnetic anomalies in the Somali abyssal plain.

Atmospheric dust sampling and sky photography was also carried out.
Chief scientistCarol A Williams (University of Cambridge Department of Earth Sciences)
Cruise reportRRS Charles Darwin CD14A cruise report cd14a.pdf — access key 'C' (0.22 MB) 
Ocean/sea areas 
GeneralIndian Ocean
Red Sea
Gulf of Aden
SpecificSeychelles/ Jedda
Track chartsRRS Charles Darwin CD14A cruise track — trk3173.html RRS Charles Darwin CD14A cruise track — trk3173a.html
Other meteorological measurementsDescription: cloud photographs
Geology and geophysics 
Multi-beam echosoundingQuantity: track kilometres = 2000
Gravity measurementsQuantity: track kilometres = 2000
Magnetic measurementsQuantity: track kilometres = 1650