Plattform Platform	Reise-Nr. Cruise-No.	Zeitraum Period	Projekt Project	Arbeitsgebiet Working area
Meteor	M155	26.05.2019 - 30.06.2019		North Atlantic Ocean

Fahrtleiter Chief Scientist	Institut Institute	Auslaufhafen Port of departure	Einlaufhafen Port of return	Stationskarte Station map	Schiffsroute Trackchart
Krastel Sebastian	Christian-Albrechts Universitat zu Kiel	Pointe a Pitre (Guadeloupe)	Mindelo

Ziel der Reise / Objectives of Cruise:

RV Meteor-Cruise M155 will realized two proposals with different objectives. The main part of the cruise was assigned to the proposal ?The tsunamigenic gravitational flank collapse of Fogo volcano, Cape Verde Is-lands'. The cruise contributed to the as-sessment of poorly constrained and heavily debated tsunamigenic potential of large volcanic island flank collapses. The recent dis-covery of tsunamigenic deposits in the Cape Verdes shows that Fogo collapsed catastrophically at ~73 ka, resulting in a mega-tsunami. This provides a unique opportunity to reconstruct the generation and impact of a mega-tsunami, directly linked to a study of its trigger mechanism. Accordingly, offshore collapse deposits were investigated by means of (1) high-resolution mapping with multibeam and side-scan sonar to accurately determine the run-out distance, and the num-ber of collapse events; (2) seismic profiling to image the deposits' thicknesses and internal structure; and (3) coring to establish a stra-tigraphy of collapse events. This study puts us at a critical juncture where the latest developments in tsunami modelling can be integrated with physical evidence from both the offshore and onshore. A smaller part of the cruise was assigned to the proposal ?Seismic pre-site survey for an IODP site on the Cape Verde Plateau'. The IODP full-proposal ?Cenozoic climate, productivity, and sediment transport at the NW African continental margin' (IODP proposal 933-full) addresses Neogene climate, sedimentation and ocean productivity along the conti-nental margin of NW Africa. A central site is proposed on the Cape Verde Plateau close to ODP Site 659 but no modern high-resolution seismic data are available for this area. A seismic survey around Site 659 was planned for identifying a location where the Plio-Pleistocene is thinner and the Miocene is thicker than at Site 659. This part of the cruise could not be realized due to a compressor failure

Messungen / Measurements