Mapping the seafloor/Die Kartierung des Meeresbodens

Fig. 1: Here you can see the 3D representation of the seafloor. Abb. 1: Hier sehen sie den Meeresboden als 3D-Karte.

(Deutsche Version unten) How do you plan research that is to be conducted at the seafloor in 4000 meter water depth? How do you choose the locations for your studies in a large area that you may not know much about yet? How do you pick the best spot to deploy sensors? – Which path […]

Wer ist eigentlich Eddy?/Who actually is Eddy?

(English version below) Das war eine häufige Frage an Bord zu Beginn unserer Forschungsfahrt. Denn das „Eddy“ Teil unserer wissenschaftlichen Untersuchungen wird, ergab sich relativ kurzfristig. Eddies sind temporäre Wasserwirbel mit einem Durchmesser von mehreren hundert Kilometern, die lange Strecken durch den offenen Ozean zurücklegen können, bevor sie sich irgendwann auflösen. Sie können von der […]

BOBO and the 7 (+7) dwarfs: How to sense the deep sea

Sensor platform with a optical backscatter sensor an an ADCP.

by Sabine Haalboom (NIOZ) The first half of the cruise has passed and we’ve finished the baseline studies in the Belgian license area. Doing my PhD research in marine geology at the Royal Netherlands Institute for Sea Research (NIOZ), my main interest is the particle dynamics in the bottom boundary layer (i.e. the layer close […]

Location, Location, Location

Fig 1: Working area of SO268. For more information see below.

Working areas and sampling sites during cruise SO268 of RV SONNE by Timm Schoening (GEOMAR) and Peter Urban (GEOMAR) RV SONNE cruise SO268-2 followed in the footsteps of the first leg of this expedition – SO268-1. We continue to sample the diverse seafloor in two main working areas within the Clarion-Clipperton-Zone (North-East Pacific). Our scope […]

Schätze der Tiefsee / Treasures of the Deep

Manganknollen aus dem deutschen Lizenzgebiet in der CCZ. (Abb 1)

(English below) Manganknollen – Entstehung und wirtschaftliche Relevanz von Jessica Volz, Sophie Paul und Julia M. Otte Während der ersten globalen Forschungsexpedition der HMS Challenger in den 1870er Jahren wurde das große Ressourcenpotential der Tiefsee deutlich. An Bord der HMS Challenger wurden zahlreiche unbekannte marine Organismen sowie mineralische Konkretionen vom pazifischen und atlantischen Meeresboden, die […]

SO268: What’s up on the seabed?

Manganese nodules with a sponge in the Clarion Clipperton Zone. Photo: ROV KIEL 6000/GEOMAR

At the bottom of the Ocean, in ~4000m water depth they can be found in high abundances: Manganese nodules. Industry and states are interested in these potato-sized objects as a new metal resource. But before commercial mining will start, the potential ecological impacts need to be investigated. Therefore, the project MiningImpact (funded through JPI Oceans) […]

Traces of life

Antje Boetius, Autun Purser, Yann Marcon   During this 4-week expedition we have been very busy with studying traces of human activity at depth on scales of centimeters to kilometers. There was so much to be learned from this study site at 4150 m water depth. But it is important to remember that the ploughing […]

CUBEs – Why do we place ‘mini’-houses on the seafloor?

It may not always be easy to see, but the deep seafloor is teeming with life! Microbes and worms live inside the sediment and large sea cucumbers crawl over the sediment. This life will probably be heavily disturbed if the industry gets permission to collect manganese nodules and remove or plough through the top layer […]