Deutsches Ozeanographisches
Datenzentrum Inventur der Sonne-Reise SO245 UltraPac (DOD-Ref-No.20160006)
Inventory of Sonne Cruise SO245 UltraPac (DOD-Ref-No.20160006)

Plattform
Platform Reise-Nr.
Cruise-No. Zeitraum
Period Projekt
Project Arbeitsgebiet
Working area

Sonne SO245 UltraPac 23.12.2015 - 28.01.2016 GEOTRACES
South Pacific Ocean

Plattform Platform	Reise-Nr. Cruise-No.	Zeitraum Period	Projekt Project	Arbeitsgebiet Working area
Sonne	SO245 UltraPac	23.12.2015 - 28.01.2016	GEOTRACES	South Pacific Ocean

Fahrtleiter
Chief Scientist Institut
Institute Auslaufhafen
Port of departure Einlaufhafen
Port of return Stationskarte
Station map Schiffsroute
Trackchart

Ferdelman Timothy Max-Planck-Institut, Marine Mikrobiologie, Biogeochemie Antofagasta Wellington

Fahrtleiter Chief Scientist	Institut Institute	Auslaufhafen Port of departure	Einlaufhafen Port of return	Stationskarte Station map	Schiffsroute Trackchart
Ferdelman Timothy	Max-Planck-Institut, Marine Mikrobiologie, Biogeochemie	Antofagasta	Wellington

Ziel der Reise / Objectives of Cruise:

Due to its extreme remoteness from any continents, the surface waters of the South Pacific Subtropical Gyre (SPG) are the most oligotrophic in the global ocean, with the clearest waters and lowest sea surface chlorophyll a concentrations. Recent studies indicate that microbial nutrient and carbon cycling is especially adapted for these ultraoligotrophic waters, and SPG may be a significant region of nitrogen fixation. We conducted a cross-gyre transect to investigate the controls on nitrogen, phosphorus and organic carbon cycling, trace element isotope geochemistry, and microbioal ecology in the water column and surface seidments at 7 main stations, and 8 intermediate stations. The transect proceeded east to west over three sections: a) 25?30' S along the northern side of the gyre from 84?33'W to 110?00'W, b) southwest to 39?S 140?W though the heart of the gyre, and c) further westward along 39?S to 170?W where we linked up with GeoTraces station GR11. Sampling included extensive CTD-Nisken bottle sampling casts throughout the water column, in situ pump deployments at all main stations, plankton net sampling, high resolution pumpcast sampling of the surface 200 meters, and box and gravity cores of the sediments. A special focus of the expedition was on process studies, using radio-labeled and stable isotope tracer experiments to experimentally examine biogeochemical and microbiological processes. Bacterial cell counts, identification of cells with high throughput fluorescent in situ hybridization (FISH), and onboard 16S rDNA tag sequencing was done at near to real-time pace. Anthropogenic nutrient loading continues to impact sub-tropical gyres and the South Pacific Gyre may be the last, pristine gyre system in the world ocean, where ultra-oligotrophic (microbial) community function might be studied. UltraPac will provide baseline data on the chemical and microbiological structure and function of this vast, but rarely studied ecosystem.

Messungen / Measurements

Institut Institute	Wissenschaftler Scientist	Anzahl Number	Einheit Unit	Typ der Messungen Type of measurements	Kommentar Comments	Daten im DOD Data in DOD
MPIMHB	Mohr Wiebke	11	hauls	B01 Primary productivity	Micronet.	no
MPIMHB	Mohr Wiebke	74	stations	B01 Primary productivity	CTD, water samples,N2 fixiation/P uptake.	no
MPIMHB	Lavik Gaute	12	stations	B02 Phytoplankton pigments (e.g. chlorophyll, fluorescence)	Pumpcast CTD, water samples, Chlorphyll a.	no
MPIMHB	Mohr Wiebke	12	stations	B02 Phytoplankton pigments (e.g. chlorophyll, fluorescence)	Pumpcast CTD, water samples, Chlorphyll a.	no
MPIMHB	Mohr Wiebke	74	stations	B02 Phytoplankton pigments (e.g. chlorophyll, fluorescence)	CTD, water samples, Chlorphyll a.	no
NUIDO	Croot Peter	74	stations	B06 Dissolved organic matter (e.g. DOC)	CTD, water samples,DOM/CDOM.	no
ICBM	Dittmar Thorsten	12	stations	B06 Dissolved organic matter (e.g. DOC)	Pumpcast CTD, water samples,DOM/CDOM.	no
ICBM	Dittmar Thorsten	74	stations	B06 Dissolved organic matter (e.g. DOC)	CTD, water samples,DOM/CDOM.	no
MPIMHB	Fuchs Bernhard M.	64	deployment	B07 Pelagic bacteria / micro-organisms	In Situ Pumps, molecular ecology.	no
MPIMHB	Fuchs Bernhard M.	74	stations	B07 Pelagic bacteria / micro-organisms	CTD, water samples, Fluorescent in situ Hybridized cells.	no
MPIMHB	Fuchs Bernhard M.	74	stations	B07 Pelagic bacteria / micro-organisms	CTD, water samples, flow cytometry sorting of cells.	no
MPIMHB	Fuchs Bernhard M.	74	stations	B07 Pelagic bacteria / micro-organisms	CTD, water samples,DNA.	no
MPIMHB	Fuchs Bernhard M.	10371	km	B07 Pelagic bacteria / micro-organisms	Underway, bacterial counts.	no
SOCWC	Zubkov Mike	74	stations	B07 Pelagic bacteria / micro-organisms	CTD, water samples, flow cytometry sorting of cells.	no
SOCWC	Zubkov Mike	74	stations	B07 Pelagic bacteria / micro-organisms	CTD, water samples,DNA.	no
SOCWC	Zubkov Mike	10371	km	B07 Pelagic bacteria / micro-organisms	Underway, bacterial counts.	no
NUIDO	Croot Peter	22	stations	B07 Pelagic bacteria / micro-organisms	Go Flo.	no
SOCWC	Zubkov Mike	11	hauls	B08 Phytoplankton	Micronet.	no
SOCWC	Zubkov Mike	74	stations	B08 Phytoplankton	CTD, water samples,picoeukaryotes.	no
MPIMHB	Mohr Wiebke	11	hauls	B08 Phytoplankton	Micronet.	no
SOCWC	Zubkov Mike	11	hauls	B09 Zooplankton	Micronet.	no
SOCWC	Zubkov Mike	74	stations	B09 Zooplankton	CTD, water samples,picoeukaryotes.	no
PUCC	Thiel Martin	8	cores	B18 Zoobenthos	Box Core, macrofauna.	no
PUCC	Thiel Martin	10371	km	B25 Birds	Underway, bird observations.	no
UOLD	Zielinski Oliver	14	deployment	D01 Current meters	Secchi Disk.	no
MPIMHB	Ehlert Claudia	8	cores	G04 Core-soft bottom (no. of cores)	Gravity core (geochronology).	no
ICBM	Pahnke Katharina	8	cores	G04 Core-soft bottom (no. of cores)	Gravity core (geochronology).	no
MPIHB	Ferdelman Timothy	8	cores	G04 Core-soft bottom (no. of cores)	Box core, Porewater (chemical analysis of sediments).	no
MPIMHB	Ehlert Claudia	8	cores	G27 Gravity measurements	Gravity core (chemical analysis of sediments).	no
ICBM	Pahnke Katharina	8	cores	G27 Gravity measurements	Gravity core (chemical analysis of sediments).	no
MPIHB	Ferdelman Timothy	296	km	G72 Geophysical measurements made at depth (below near surface and above seafloor)	Station Parasound Profile.	no
MPIHB	Ferdelman Timothy	296	km	G75 Single channel seismic reflection	Station Parasound Profile.	no
MPIMHB	Ehlert Claudia	8	cores	G90 Other geological or geophysical measurements	Box Core, Archive.	no
MPIMHB	Ehlert Claudia	8	cores	G90 Other geological or geophysical measurements	Box Core, surface samples.	no
ICBM	Pahnke Katharina	8	cores	G90 Other geological or geophysical measurements	Box Core, Archive.	no
ICBM	Pahnke Katharina	8	cores	G90 Other geological or geophysical measurements	Box Core, surface samples.	no
LDEO	Anderson Robert	8	cores	G90 Other geological or geophysical measurements	Box Core, Archive.	no
MPIHB	Ferdelman Timothy	1	n miles	G90 Other geological or geophysical measurements	EM 122, ADCP38+75, Parasound	yes
MPIHB	Ferdelman Timothy	8	cores	G90 Other geological or geophysical measurements	Box Core, surface samples.	no
MPIHB	Ferdelman Timothy	10371	km	G90 Other geological or geophysical measurements	Underway, dust sampling.	no
MPIHB	Ferdelman Timothy	15	stations	H00 Stations	-	yes
MPIMHB	Lavik Gaute	12	stations	H10 CTD-Stations	Pumpcast CTD, online temperature, salinity & fluorescence.	no
UOLD	Zielinski Oliver	74	stations	H10 CTD-Stations	CTD, water samples,Salintiy.	no
UOLD	Zielinski Oliver	10371	km	H10 CTD-Stations	Underway salinity, temperature, fluroscence.	no
UOLD	Zielinski Oliver	15	profiles	H17 Optics (e.g. underwater light levels)	Optical Profiler.	no
UOLD	Zielinski Oliver	15	profiles	H17 Optics (e.g. underwater light levels)	UV Profiler.	no
MPIMHB	Lavik Gaute	12	stations	H21 Oxygen	Pumpcast CTD, online gas measurements.	no
MPIMHB	Lavik Gaute	12	stations	H22 Phosphates	Pumpcast CTD, water samples, nutrients.	no
MPIMHB	Lavik Gaute	74	stations	H22 Phosphates	CTD, water samples, nutrients.	no
MPIHB	Ferdelman Timothy	8	cores	H22 Phosphates	Box core, Porewater.	no
MPIMHB	Lavik Gaute	12	stations	H23 Total - P	Pumpcast CTD, water samples, nutrients.	no
MPIMHB	Lavik Gaute	74	stations	H23 Total - P	CTD, water samples, nutrients.	no
MPIHB	Ferdelman Timothy	8	cores	H23 Total - P	Box core, Porewater.	no
MPIMHB	Lavik Gaute	12	stations	H24 Nitrates	Pumpcast CTD, water samples, nutrients.	no
MPIMHB	Lavik Gaute	74	stations	H24 Nitrates	CTD, water samples, nutrients.	no
MPIHB	Ferdelman Timothy	8	cores	H24 Nitrates	Box core, Porewater.	no
MPIMHB	Lavik Gaute	12	stations	H25 Nitrites	Pumpcast CTD, water samples, nutrients.	no
MPIMHB	Lavik Gaute	74	stations	H25 Nitrites	CTD, water samples, nutrients.	no
MPIHB	Ferdelman Timothy	8	cores	H25 Nitrites	Box core, Porewater.	no
MPIMHB	Lavik Gaute	12	stations	H26 Silicates	Pumpcast CTD, water samples, nutrients.	no
MPIMHB	Lavik Gaute	74	stations	H26 Silicates	CTD, water samples, nutrients.	no
MPIHB	Ferdelman Timothy	8	cores	H26 Silicates	Box core, Porewater.	no
MPIMHB	Ehlert Claudia	8	cores	H30 Trace elements	Box Core, Rare earth elements.	no
MPIMHB	Ehlert Claudia	64	deployment	H30 Trace elements	In Situ Pumps, rare earth element isotopes.	no
MPIMHB	Ehlert Claudia	74	stations	H30 Trace elements	CTD, water samples, Nd isotopes/ Rare Earth Elements.	no
MPIMHB	Ehlert Claudia	74	stations	H30 Trace elements	CTD, water samples, trace elements.	no
ICBM	Pahnke Katharina	8	cores	H30 Trace elements	Box Core, Rare earth elements.	no
ICBM	Pahnke Katharina	64	deployment	H30 Trace elements	In Situ Pumps, rare earth element isotopes.	no
ICBM	Pahnke Katharina	74	stations	H30 Trace elements	CTD, water samples, Nd isotopes/ Rare Earth Elements.	no
ICBM	Pahnke Katharina	74	stations	H30 Trace elements	CTD, water samples, trace elements.	no
NUIDO	Croot Peter	12	stations	H30 Trace elements	Pumpcast CTD, water samples, trace elements.	no
NUIDO	Croot Peter	74	stations	H30 Trace elements	CTD, water samples, trace elements.	no
LDEO	Anderson Robert	8	cores	H30 Trace elements	Box Core, U-Th.	no
LDEO	Anderson Robert	64	deployment	H30 Trace elements	CTD, water samples, U-Th isotopes.	no
MPIMHB	Lavik Gaute	12	stations	H33 Other dissolved gases	Pumpcast CTD, online gas measurements.	no
LDEO	Anderson Robert	74	stations	H33 Other dissolved gases	CTD, water samples, He.	no
MPIMHB	Lavik Gaute	12	stations	H76 Ammonia	Pumpcast CTD, water samples, nutrients.	no
MPIMHB	Lavik Gaute	74	stations	H76 Ammonia	CTD, water samples, nutrients.	no
MPIHB	Ferdelman Timothy	8	cores	H76 Ammonia	Box core, Porewater.	no
MPIHB	Ferdelman Timothy	1	n miles	H80 Other physical measurements	Underway measurements during the whole trip such as coordinates, depth, meteorological parameter and so on	yes
MPIMHB	Ehlert Claudia	74	stations	H90 Other chemical oceanographic measurements	CTD, water samples, Si isotopes.	no
ICBM	Pahnke Katharina	74	samples	H90 Other chemical oceanographic measurements	CTD, water samples, Si isotopes.	no
NUIDO	Croot Peter	12	stations	H90 Other chemical oceanographic measurements	Pumpcast CTD, water samples, reactive intermediates.	no
NUIDO	Croot Peter	74	stations	H90 Other chemical oceanographic measurements	CTD, water samples, reactive intermediates.	no
MPIHB	Ferdelman Timothy	74	stations	H90 Other chemical oceanographic measurements	CTD, water samples, DIC isotopes/H2O isotopes.	no
NUIDO	Croot Peter	12	stations	P01 Suspended matter	Pumpcast CTD, microplasitics.	no
NUIDO	Croot Peter	10371	km	P01 Suspended matter	Underway, microplastics.	no

20.4.2024