RV SONNE Fahrtbericht / Cruise Report SO234/1 “SPACES” : Science or the Assessment of Complex Earth System Processes, 22.06. – 06.07.2014, Walvis Bay / Namibia - Durban / South Africa
Werner, Reinhard and Wagner, Hans-Joachim, eds. and Shipboard Scientific Party (2014) RV SONNE Fahrtbericht / Cruise Report SO234/1 “SPACES” : Science or the Assessment of Complex Earth System Processes, 22.06. – 06.07.2014, Walvis Bay / Namibia - Durban / South Africa . GEOMAR Report, N.Ser. 017 . GEOMAR Helmholtz Zentrum für Ozeanforschung, Kiel, 44 pp. DOI 10.3289/GEOMAR_REP_NS_17_2014.
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SO-234/1 was a training and capacity building cruise for students from southern Africa and
Germany in the framework of the BMBF-funded SPACES program (Science for the
Assessment of Complex Earth System Processes), a cooperative research project initiated by
the relevant ministries in Namibia, South Africa, Angola and Germany. Scientifically, SO-234/1
continued geological studies regarding the temporal and geochemical evolution of the Walvis
Ridge (Southeast Atlantic) conducted on the precursor SO-233 expedition, and was
broadened by biological studies by University of Tübingen scientists, which aimed to get a
better understanding of the adaptations of visual systems in mesopelagic animals to
bioluminescence. The educational aspects on SO-234/1 comprised fully integration of the
students into all scientific work on board and various lectures and courses given by the senior
scientists during transit times.
The working area of SO-234/1 included several seamounts, such as the Ewing Seamount, and
a section of the southeastern margin of the Walvis Ridge. Due to the fair weather conditions
and the excellent support from the master and crew, SO-234/1 completed 18 sampling
stations within only four working days. Rock sampling has been conducted using chain bag
dredges. The seven SO-234/1 dredge hauls recovered in situ rocks from up to 3,500 m water
depth, among them fairly fresh lava fragments and volcaniclastic rocks suitable for
volcanological, geochemical, and geochronological analyses. Additionally, a TV-grab station
has been conducted at Ewing Seamount but the grab failed to return hard rocks. The group of
biologists conducted ten trawls at depths between 400 and 1,000 m using a rectangular
midwater Tucker Trawl with an opening of 16 square meters. All trawls were successful and
brought numerous animals from the junction of the meso- and bathypelagic habitats including,
apart from fishes, several cephalopods, crustaceans, deep-sea jellyfish, ctenophors and many
|Document Type:||Report (Cruise Report)|
|Keywords:||RV Sonne ; Cruise report ; SO234/1 ; SPACES|
|Research affiliation:||OceanRep > GEOMAR > FB4 Dynamics of the Ocean Floor > FB4-MUHS Magmatic and Hydrothermal Systems|
|Date Deposited:||11 Sep 2014 09:04|
|Last Modified:||15 Sep 2014 10:15|
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