Goal of the cruise is to quantitatively understand the dynamics of mesoscale eddy focusing effects on the biological carbon pump and the transport of carbon towards the deep sea seafloor and the consumption of organic carbon. Eddies play an important role in the lateral mixing and transport of physical-biogeochemical properties and thereby modulate biological productivity and material fluxes to the seabed. The challenge is to separate this Eddie signal from the normal heterogeneous distribution of phyto-detritus on the seafloor, modulated by seafloor morphology, bottom currents and sedimentological processes.
i. the physical and biogeochemical characterization of one specific eddy;
ii. to quantify and examine the spatio-temporal variability of material fluxes to the seafloor and benthic turnover;
iii. to decipher the local scale variability of benthic biogeochemical processes driven by the heterogeneous deposition of detritus;
iv. investigate the temporal variability of material towards the seafloor at one location through a one year long EINSTEIN rover deployment.
Due to the COVID-19 pandemic the originally planned MSM 104 expedition has been canceled. We are now looking forward to conducting the MOSES/REEBUS Eddy Study III expedition with the research vessel Meteor as GPF 19-2_020. The planned timeline for the GPF 19-2_020 expedition is from approx. 22.05.2022 to approx. 01.07.2022.
The map shows the study area with the planned work areas of the MOSES/REEBUS Eddy Study III.
The network plots visualize relative ranges of different geochemical proxies in four different sediment depths (0cm, 0.5cm, 1.5 cm and 2.5 cm). Physical-biogeochemical properties vary in between different seafloor facies. Identifying the drivers that control these distribution patterns, will be one task of the planned MOSES/REEBUS Eddy Study III expedition.