Deutsches Ozeanographisches
Datenzentrum Inventur der Sonne1-Reise SO233 (DOD-Ref-No.20140026)
Inventory of Sonne1 Cruise SO233 (DOD-Ref-No.20140026)

Plattform
Platform
Reise-Nr.
Cruise-No.
Zeitraum
Period
Projekt
Project
Arbeitsgebiet
Working area
Sonne1 SO233 14.05.2014 - 21.06.2014 WALVIS
 
SE Atlantic (Limit 20?W)  

Fahrtleiter
Chief Scientist
Institut
Institute
Auslaufhafen
Port of departure
Einlaufhafen
Port of return
Stationskarte
Station map
Schiffsroute
Trackchart
Hoernle K.A. GEOMAR Helmholtz-Zentrum fur Ozeanforschung Kiel Cape Town Walvis Bay   

Ziel der Reise / Objectives of Cruise:

Cruise SO-233 comprised petrological, volcanological, geochemical, geochronological, and biological studies in the area of the aseismic Walvis Ridge and the adjacent ocean floor. The Walvis Ridge is a textbook example of a hotspot track connected to a continental flood basalt province and represents the Atlantic "type locality" for the enriched mantle one (EM-I) geochemical endmember in intraplate volcanic rocks. The geological studies carried out during SO-233 included multi-beam mapping using a SIMRAD EM 120 echo sounding system, sediment echo sounding using a ATLAS PARASOUND sub-bottom profiling system, and hard rock sampling by dredging and TV-grab. The major targets of the cruise are (1) to test for age progressive volcanism along the ridge, (2) to differentiate between classical hotspot and plate fracturing models for its formation, and (3) to constrain the origin and temporal and spatial evolution of melting conditions and source compositions (in particular for the EM-I endmember and for zonation of mantle plumes). Scientists from the ?Museum fur Naturkunde Berlin", Germany, conducted the biological part of the research project using TV-multi corer, TV-grab, and sediment traps installed in the geological dredges. The biology program intended to describe the benthic diversity of deep-sea invertebrates of the Walvis Ridge and will help to identify proxies of species connectivity and dispersal between the Walvis Ridge and neighboring ridge like structures (e.g., Agulhas Ridge, cruise MSM19/3).

Messungen / Measurements

Institut
Institute
Wissenschaftler
Scientist
Anzahl
Number
Einheit
Unit
Typ der Messungen
Type of measurements
Kommentar
Comments
Daten im DOD
Data in DOD
MFNB Neuhaus Birger 71 stations B73
Sediment traps
Sediment sampling for studies of meiofauna using sediment traps installed in the rock dredges. no
GEOMAH Hoernle K.A. 71 stations G01
Dredge
Hard rock sampling for volcanological, petrological, geochemical, and geochronological analyses. no
MFNB Luter Carsten 6 stations G02
Grab
Sampling of macro benthos and sediment for biological studies. no
MFNB Neuhaus Birger 11 stations G04
Core-soft bottom (no. of cores)
Sampling of surface sediment using a TV-multi corer for investigations of meiofauna. no
GEOMAH Werner Reinhard 1 survey G74
Multi-beam echosounding
Multi beam profiling for morphological studies and selection of sampling sites. no
GEOMAH Werner Reinhard 1 survey G90
Other geological or geophysical measurements
ATLAS PARASOUND sub-bottom profiling. no
GEOMAH Werner Reinhard 1 stations H10
CTD-Stations
Measuring of sound profile the EM120 multi beam system - water samples from rosette sampler have been used for studies of marine plankton. no
GEOMAH Hoernle K.A. 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