Deutsches Ozeanographisches
Datenzentrum Inventur der Sonne1-Reise SO207 (DOD-Ref-No.20100155)
Inventory of Sonne1 Cruise SO207 (DOD-Ref-No.20100155)

Plattform
Platform
Reise-Nr.
Cruise-No.
Zeitraum
Period
Projekt
Project
Arbeitsgebiet
Working area
Sonne1 SO207 21.06.2010 - 13.07.2010 SEAMOUNTFLUX
 
North Pacific Ocean  

Fahrtleiter
Chief Scientist
Institut
Institute
Auslaufhafen
Port of departure
Einlaufhafen
Port of return
Stationskarte
Station map
Schiffsroute
Trackchart
Villinger Heinrich Universitat Bremen - Fachbereich 5 - Geowissenschaften Caldera Caldera   

Ziel der Reise / Objectives of Cruise:

The scientific goal was to study the exchange of matter and energy between the ocean and the upper lithosphere in the vicinity of unexplained circular depressions in the sediment covered seafloor. A possible model for their formation is the dissolution of calcium carbonate (CaCO3) minerals by upward flowing warm fluids, which are CaCO3 under saturated; hence, the term 'hydrothermal pits'. It is suspected that seamounts act as the entrance point for cold seawater, which then thermally and chemically equilibrates with the basaltic oceanic crust prior to exiting through the 'hydrothermal pits'. Such a processes must affect the thermal structure in and around the pits as well as the geochemistry of the pore water. Therefore, we mapped the pits with acoustic methods (bathymetry, sediment echo sounding and single channel seismic) and conducted heat flow measurements inside and outside. Pore water and sediments samples from inside and outside the pits were collected through gravity coring.

Messungen / Measurements

Institut
Institute
Wissenschaftler
Scientist
Anzahl
Number
Einheit
Unit
Typ der Messungen
Type of measurements
Kommentar
Comments
Daten im DOD
Data in DOD
GEOUNB Villinger Heinrich 1 n miles G74
Multi-beam echosounding
EM120 yes
GEOUNB Villinger Heinrich 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