Deutsches Ozeanographisches
Datenzentrum Inventur der Sonne1-Reise 177 (DOD-Ref-No.20050174)
Inventory of Sonne1 Cruise 177 (DOD-Ref-No.20050174)

Plattform
Platform
Reise-Nr.
Cruise-No.
Zeitraum
Period
Projekt
Project
Arbeitsgebiet
Working area
Sonne1 177 02.06.2004 - 19.07.2004   South China Sea  

Fahrtleiter
Chief Scientist
Institut
Institute
Auslaufhafen
Port of departure
Einlaufhafen
Port of return
Stationskarte
Station map
Schiffsroute
Trackchart
Suess Erwin Leibniz-Institut fur Meereswissenschaften an der Universitat Kiel Hong Kong Shanghai   

Ziel der Reise / Objectives of Cruise:

Cooperative research between the Guangzhou Marine Geological Survey (GMGS) and the Leibniz-Institut fur Meereswissenschaften Kiel (IFM-GEOMAR) addressed the geological methane budget and environmental effects of methane emissions on the northern slope of the South China Sea. Multibeam bathymetry, ocean floor observation (OFOS) and water column methane distribution provided the basis for locating seafloor sites of methane venting. Accumulations of methane-derived carbonate debris and pavements characterize the seafloor at depth between 600-900m. A 30-m high structure, named Jiu Long Methane Reef, was discovered; it is an active cold vent site with chemosynthetic fauna. At 3000m in the adjacent Formosa Canyon methane anomalies and clam colonies indicate active methane venting. Pore water and gas chemistry on gravity cores indicate rather shallow depths of the sulfate-methane-interface (SMI) and documented chloride anomalies from deep-seated fluids. The results document: vast amounts of methane being emitted from the passive margin of the northern South China Sea; significant deep-sea biota modulate the greenhouse gas budget by fixing methane carbon as authigenic carbonates, TV-guided deep-sea instrumentation and deployment of pressure-conserving coring technology advances marine science; productive implementation of Chinese-German partnership..

Messungen / Measurements

Institut
Institute
Wissenschaftler
Scientist
Anzahl
Number
Einheit
Unit
Typ der Messungen
Type of measurements
Kommentar
Comments
Daten im DOD
Data in DOD
SIOHA Han Xiqiu 11 stations G02
Grab
TV-grab no
GMGS Huang Yongyang 16 stations G04
Core-soft bottom (no. of cores)
Gravity cores no
IFMGEO Suess Erwin 33 stations G08
Bottom photography
Bottom photography no
IFMGEO Suess Erwin 55 n miles G08
Bottom photography
Bottom photography no
IFMGEO Suess Erwin - n miles G74
Multi-beam echosounding
- no
IFMGEO Suess Erwin 2444 n miles G74
Multi-beam echosounding
Multibeam & parasound no
IFMGEO Suess Erwin 15 stations G90
Other geological or geophysical measurements
Multi-cores no
GEOUNB Bohrmann Gerhard 2 stations G90
Other geological or geophysical measurements
Pressure core no
IFMGEO Suess Erwin 25 stations H10
CTD-Stations
CTDO2-Sonde no
IFMGEO Suess Erwin 25 stations H33
Other dissolved gases
Methane no
16.11.2019