Deutsches Ozeanographisches
Datenzentrum Inventur der Poseidon-Reise 395 (DOD-Ref-No.20100108)
Inventory of Poseidon Cruise 395 (DOD-Ref-No.20100108)

Plattform
Platform
Reise-Nr.
Cruise-No.
Zeitraum
Period
Projekt
Project
Arbeitsgebiet
Working area
Poseidon 395 04.02.2010 - 19.02.2010   NE Atlantic (Limit 40?W)  

Fahrtleiter
Chief Scientist
Institut
Institute
Auslaufhafen
Port of departure
Einlaufhafen
Port of return
Stationskarte
Station map
Schiffsroute
Trackchart
Krastel Sebastian Leibniz-Institut fur Meereswissenschaften an der Universitat Kiel Las Palmas Las Palmas   

Ziel der Reise / Objectives of Cruise:

Submarine landslides present a major natural hazard, as they can destroy offshore infra-structures and may create destructive tsunamis. The NW-African continental margin is characterized by a complex interplay between gravitational and contour parallel sediment transport processes including large scale mass wasting at several locations. The Sahara-Slide complex is a mega slide with a length of ~700km and an estimated volume of ~600km3. The age of the main slide event is 50-60ka. The distal part of this slide complex is well studied, while data density in the source-area is sparse. Available data of the source-area indicate vertically stacked slide deposits and a relatively recent reactivation of the headwall. The morphology and evolution of the headwall area of the Sahara-Slide complex was studied during a 17-day research cruise with RV Poseidon by means of deep-towed sidescan sonar, bathymetric mapping, and seismic profiling in February 2010. Individual slide masses as well as undisturbed sediments upslope of the headwall were sampled by gravity coring in order to investigate trigger mechanisms and present day slope stability. The investigations shall lead to a detailed analysis of flow processes of the Sahara-Slide complex from source to sink. The investigations are related to the project B4 (Submarine hazards at continental margins) within the Excellence Cluster 'Future Ocean', University of Kiel.

Messungen / Measurements

Institut
Institute
Wissenschaftler
Scientist
Anzahl
Number
Einheit
Unit
Typ der Messungen
Type of measurements
Kommentar
Comments
Daten im DOD
Data in DOD
IFMGEO Krastel Sebastian 10 stations G04
Core-soft bottom (no. of cores)
Geological sampling with Gravity corer no
IFMGEO Krastel Sebastian 250 n miles G24
Long/short range side scan sonar
Deep tow sidescan sonar no
IFMGEO Krastel Sebastian 600 n miles G74
Multi-beam echosounding
Multibeam Data no
IFMGEO Krastel Sebastian 700 n miles G76
Multichannel seismic reflection
High resolution multichannel seismics no
IFMGEO Krastel Sebastian 1 stations H10
CTD-Stations
CTD no
16.11.2019