Gökay Karakaş Gökay Karakaş 1 Patrick Marchesiello Patrick Marchesiello 2 Stephan Stephan Frickenhaus Frickenhaus 1 1 Nicolas Nowald Nicolas Nowald 3 Reiner Schlitzer Reiner Schlitzer 1 1 Alfred-Wegener-Institute for Polar and Marine Research (AWI), Bremerhaven Alfred-Wegener-Institute for Polar and Marine Research (AWI), Bremerhaven 2 Institut de Recherche pour le Developpement (IRD), Brest Institut de Recherche pour le Developpement (IRD), Brest 3 Center for Marine Environmental Sciences (MARUM) Center for Marine Environmental Sciences (MARUM) , Bremen , Bremen Modelling Particle Fluxes in Modelling Particle Fluxes in the Coastal Upwelling Zone off the Coastal Upwelling Zone off NW Africa NW Africa
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Modelling Particle Fluxes in the Coastal Upwelling Zone off NW Africa
Modelling Particle Fluxes in the Coastal Upwelling Zone off NW Africa. Gökay Karakaş 1 Patrick Marchesiello 2 Stephan Frickenhaus 1 Nicolas Nowald 3 Reiner Schlitzer 1 1 Alfred-Wegener-Institute for Polar and Marine Research (AWI), Bremerhaven - PowerPoint PPT Presentation
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Gökay KarakaşGökay Karakaş11 Patrick MarchesielloPatrick Marchesiello22 Stephan FrickenhausStephan Frickenhaus1 1
Nicolas NowaldNicolas Nowald33 Reiner SchlitzerReiner Schlitzer11
11Alfred-Wegener-Institute for Polar and Marine Research (AWI), BremerhavenAlfred-Wegener-Institute for Polar and Marine Research (AWI), Bremerhaven22Institut de Recherche pour le Developpement (IRD), BrestInstitut de Recherche pour le Developpement (IRD), Brest
33Center for Marine Environmental Sciences (MARUM)Center for Marine Environmental Sciences (MARUM), Bremen, Bremen
Modelling Particle Fluxes in the Modelling Particle Fluxes in the Coastal Upwelling Zone off NW AfricaCoastal Upwelling Zone off NW Africa
• Uni-Bremen, AWI, MPI, MARUM, ZMT• aims to investigate geoscientifically the ocean margins, the transitional zones between the oceans and the continents• within the Center the scientific work focuses on four main research fields:
A - Paleoenvironment
B - Biogeochemical Processes
C - Sedimentation Processes
D - Use Impact Research
• The research subjects span from environmental changes in the Tertiary to the impact of recent coastal constructions, and from microbial degradation in the sediment to large scale sediment mass wasting along continental margins
www.rcom-bremen.de
Research Center Ocean Margins - RCOMResearch Center Ocean Margins - RCOM
B - Biogeochemical ProcessesB - Biogeochemical Processes• Project B1:
Oxygen minimum zones in high-productivity regimes: Biogeochemical cycling and geological documentation • Project B2:
Origin, reactivity, and transformation of particulate organic material in the benthic boundary layer in high productivity systems
• Project B3:Lateral and vertical transport of particles produced in the surface layer on their way down to the deep ocean and into the sediment
• Project B4:Biogenic silica in the Southern Ocean and adjacent ocean margin sediments: Biogeochemical processes, budgets, and temporal variations
Sub-project B3: Particle TransportSub-project B3: Particle Transport• How does the material transfer run into the open ocean from the productive zone? Could it be
simulated?
• Which effects have spacious climatic variations on the dynamics of the coastal lift?
• What is the significance of different ballast minerals (e.g. quartz dust, carbonate) for the export and the decay of organic material?
• Which larger particles are important for vertical transport and what is their composition?
• Which processes control concentrations and size distributions of particles in the water column?
• How is the remineralisation in micro environments of pellets and aggregates as a function of size and sinking velocity?
- Modelling the transport of particles in the coastal upwelling system off NW Africa- Various transport scenarios with particle types, concentrations, sizes and sinking rates incorporated - Validation with both particle fluxes from field work (sediment traps, optical measurements) as well as surface ocean data derived
from remote sensing datasets
- Investigations on main and trace elements
- Experimental microbiological studies on pellets and aggregates
- Field Campaigns
B3 – Particle TransportB3 – Particle Transport
A new insight into export budgets of carbon in this major upwelling system of the world ocean
- Deep Sea Particle Camera, ParCa
- In-situ particle data from optical systems
- Quantify the in-situ
distribution, size, orientation
and shape of marine
particulate matter
Field CampaignsField Campaigns
- Data extraction from the pictures is provided by a digital, image analysis software - Attached in a profiler or Remotely Operated Vehicle (ROV)
Field CampaignsField Campaigns
- Remotely Operated Vehicle (ROV)- In-situ sampling of marine aggregates
- Diving up to 1000m
Field CampaignsField Campaigns
Kameraprofil
GeoB 7411
GeoB 8630
GeoB 7415
Kap Blanc
Fallenverankerung
seit 1988
Kameraprofil
GeoB 7404
http://seawifs.gsfc.nasa.gov/SEAWIFS.html
Arbeitsgebiet
18° 18°
20° 20°
22° 22°
24° 24°
26° 26°
-22°
-22°
-20°
-20°
-18°
-18°
-16°
-16°
-14°
-14°
CB_13
CB_I
GeoB_8628GeoB_8629 GeoB_8630
GeoB_8631_1
GeoB_8631_12
GeoB_8632
GeoB_8633_3GeoB_8633_8
GeoB_8634
GeoB_8635
GeoB_8636
GeoB_8637
GeoB_8638GeoB_8639
7929
7930
79317932
79337934
7935
7937
7938
7920
7927
GeoB_7408
GeoB_7410
GeoB_7411
GeoB_7412
GeoB_7413
GeoB_7415
GeoB_7421
GeoB_7422
GeoB_7423
GeoB_7425
GeoB_7428
GeoB_7429
GeoB_7430
POS 272M53 1cM 58 2b500 m1000 m2000 m3000 m4000 m
Source: GEBCO.
Stations from different cruises
• Test various hypotheses on particle transport with simple, idealised scenarios