Deutsches Ozeanographisches
Datenzentrum Inventur der Sonne1-Reise SO234-1 (DOD-Ref-No.20140027)
Inventory of Sonne1 Cruise SO234-1 (DOD-Ref-No.20140027)

Plattform
Platform
Reise-Nr.
Cruise-No.
Zeitraum
Period
Projekt
Project
Arbeitsgebiet
Working area
Sonne1 SO234-1 22.06.2014 - 05.07.2014 SPACES
 
SE Atlantic (Limit 20?W)  

Fahrtleiter
Chief Scientist
Institut
Institute
Auslaufhafen
Port of departure
Einlaufhafen
Port of return
Stationskarte
Station map
Schiffsroute
Trackchart
Werner Reinhard GEOMAR Helmholtz-Zentrum fur Ozeanforschung Kiel Walvis Bay Durban   

Ziel der Reise / Objectives of Cruise:

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 of the temporal and geochemical evolution of the Walvis Ridge (Southeast Atlantic) conducted on the precursor SO-233 expedition (www.geomar.de/forschen/expeditionen; www.oceanblogs.org/walvis2) and was broadened by biological studies by the University of Tubingen which aimed to get a better understanding of the adaptations of visual systems in mesopelagic animals to bioluminescence. The working area of SO234/1 comprised 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 the crew, SO234/1 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 salp colonies.

Messungen / Measurements

Institut
Institute
Wissenschaftler
Scientist
Anzahl
Number
Einheit
Unit
Typ der Messungen
Type of measurements
Kommentar
Comments
Daten im DOD
Data in DOD
GPITB Wagner Hans Joachim 10 hauls B14
Pelagic fish
Sampling of mesopelagic fish using a Tucker Trawl. no
GEOMAH Werner Reinhard 7 hauls G01
Dredge
Hard rock sampling for volcanological, petrological, geochemical, and geochronological studies. no
GEOMAH Werner Reinhard 1 deployment G02
Grab
TV-grab deployment for education purposes. no
GEOMAH Werner Reinhard 15 survey G74
Multi-beam echosounding
mainly for station selection. no
GEOMAH Werner Reinhard 10 survey G90
Other geological or geophysical measurements
Sub-bottom profiling using an ATLAS PARASOUND sediment echosounder. no
GEOMAH Werner Reinhard 1 n miles H80
Other physical measurements
Underway measurements during the whole trip such as coordinates, depth, meteorological parameter and so on yes
16.11.2019