Plattform Platform	Reise-Nr. Cruise-No.	Zeitraum Period	Projekt Project	Arbeitsgebiet Working area
Sonne1	SO224	09.10.2012 - 18.11.2012	MANIHIKI II	SW Pacific (Limit 140W)

Fahrtleiter Chief Scientist	Institut Institute	Auslaufhafen Port of departure	Einlaufhafen Port of return	Stationskarte Station map	Schiffsroute Trackchart
Uenzelmann-Neben Gabriele	Alfred-Wegener-Institut fur Polar- und Meeresforschung	Suva	Suva

Ziel der Reise / Objectives of Cruise:

Cruise Leg So 224 with RV Sonne, leaving Suva, Fiji on 11.10.12, returning to Suva, Fiji on 17.11.12, comprised seismic reflection and refraction studies of the Manihiki Plateau, a Large Igneous Province (LIP) in the south western Pacific Ocean. The Manihiki Plateau consists of three major geomorphological unit: Western Plateau, North Plateau, and High Plateau. A study of the crustal structure of Western and High Plateau was needed to understand the proposed evolution of the Manihiki Plateau as part of a 'super' LIP together with the Ontong-Java and Hikurangi Plateaus. Seismic refraction and wide-angle data collected with 33 ocean bottom seismometers along two 270 nm long profiles will provide details on the crustal development. Seismic reflection data were gathered to study the plateau's development following the initial phase of creation and the sedimentary distribution. Additionally, the data will be used to identify suitable drill locations for IODP proposal 630. In total ~4200 km of high resolution seismic reflection data, and ~1000 km of seismic refraction and wide-angle data were recorded. Bathymetric and Parasound data were recorded parallel to the seismic profiling. Both datasets have been used to pick significant locations for petrological sampling, which will be the focus of the following cruise So 225.

Messungen / Measurements