Search Results - "Wefer, G."

Multivariate Statistical and Multiproxy Constraints on Earthquake‐Triggered Sediment Remobilization Processes in the Central Japan Trench by T. Schwestermann, J. Huang, J. Konzett, A. Kioka, G. Wefer, K. Ikehara, J. Moernaut, T. I. Eglinton, M. Strasser

“…Abstract Understanding the impact of earthquakes on subaqueous environments is key for submarine paleoseismological investigations seeking to provide long‐term…”
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Time series of in-situ particle properties and sediment trap fluxes in the coastal upwelling filament off Cape Blanc, Mauritania by Nowald, N., Iversen, M.H., Fischer, G., Ratmeyer, V., Wefer, G.

“…•We compared sediment trap data with in-situ particle size and abundance over 2years.•We observed a tight coupling between the flux patterns and in-situ…”
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Miocene–Pliocene vegetation change in south-western Africa (ODP Site 1081, offshore Namibia) by Hoetzel, S., Dupont, L.M., Wefer, G.

“…Aridification is an important component of Late Neogene climate change in south-western Africa probably caused by modifications in the atmospheric circulation…”
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Drilling cores on the sea floor with the remote-controlled sea floor drilling rig MeBo by Freudenthal, T, Wefer, G

“…The sea floor drill rig MeBo (acronym for Meeresboden-Bohrgerät, German for sea floor drill rig) is a robotic drill rig that is deployed on the sea floor and…”
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Changes in the Dust‐Influenced Biological Carbon Pump in the Canary Current System: Implications From a Coastal and an Offshore Sediment Trap Record Off Cape Blanc, Mauritania by Fischer, G., Romero, O., Toby, E., Iversen, M., Donner, B., Mollenhauer, G., Nowald, N., Ruhland, G., Klann, M., Hamady, B., Wefer, G.

“…Long‐term data characterizing the oceans' biological carbon pump are essential for understanding impacts of climate variability on marine ecosystems. The…”
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Temperature and productivity changes off the western Iberian margin during the last 150 ky by Salgueiro, E., Voelker, A.H.L., de Abreu, L., Abrantes, F., Meggers, H., Wefer, G.

“…Present day hydrographic conditions along the western Iberian margin are characterized by seasonal upwelling with filaments that can penetrate more than 200 km…”
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Abrupt shifts of the Sahara–Sahel boundary during Heinrich stadials by Collins, J. A, Govin, A, Mulitza, S, Heslop, D, Zabel, M, Hartmann, J, Röhl, U, Wefer, G

“…Relict dune fields that are found as far south as 14° N in the modern-day African Sahel are testament to equatorward expansions of the Sahara desert during the…”
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Upwelling Intensification as Part of the Pliocene-Pleistocene Climate Transition by Marlow, Jeremy R., Lange, Carina B., Wefer, Gerold, Rosell-Melé, Antoni

“…A deep-sea sediment core underlying the Benguela upwelling system off southwest Africa provides a continuous time series of sea surface temperature (SST) for…”
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Surface sediment distribution along the Chilean continental slope related to upwelling and productivity by Hebbeln, D., Marchant, M., Freudenthal, T., Wefer, G.

“…The coastal upwelling system of the Peru-Chile Current belongs to the most productive regions in the world oceans. In spite of this remarkable fact only very…”
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Masked millennial-scale climate variations in South West Africa during the last glaciation by Hessler, I, Dupont, L, Handiani, D, Paul, A, Merkel, U, Wefer, G

“…To address the connection between tropical African vegetation development and high-latitude climate change we present a high-resolution pollen record from ODP…”
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Simple, affordable, and sustainable borehole observatories for complex monitoring objectives by Kopf, A, Freudenthal, T, Ratmeyer, V, Bergenthal, M, Lange, M, Fleischmann, T, Hammerschmidt, S, Seiter, C, Wefer, G

“…Seafloor drill rigs are remotely operated systems that provide a cost-effective means to recover sedimentary records of the upper sub-seafloor deposits. Recent…”
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Oxygen isotope composition of living Neogloboquadrina pachyderma (sin.) in the Arctic Ocean by Bauch, D., Carstens, J., Wefer, G.

“…Data from the Nansen Basin of the Arctic Ocean are used to investigate the habitat and conditions under which the polar planktic foraminifer Neogloboquadrina…”
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Organic carbon, biogenic silica and diatom fluxes in the marginal winter sea-ice zone and in the Polar Front Region: interannual variations and differences in composition by Fischer, G, Gersonde, R, Wefer, G

“…Particle fluxes and composition were examined over 5 years at two mooring sites in the Polar Front Region (site PF: 50°09.S, 5°50.E) and in the marginal winter…”
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On the reconstruction of upwelling history: Namibia upwelling in context by Berger, W.H., Wefer, G.

“…Eastern boundary upwelling is an important aspect of the modern ocean, despite the relatively small area involved. Consequences of increased upwelling during…”
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Late Miocene stable isotope stratigraphy of SE Atlantic ODP Site 1085: Relation to Messinian events by Vidal, L, Bickert, T, Wefer, G, Röhl, U

“…High-resolution benthic oxygen isotope and XRF (Fe and Ca) records from Site 1085 drilled in the Mid-Cape basin (ODP Leg 175) are used to investigate global…”
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Mineral ballast and particle settling rates in the coastal upwelling system off NW Africa and the South Atlantic by Fischer, G., Karakas, G., Blaas, M., Ratmeyer, V., Nowald, N., Schlitzer, R., Helmke, P., Davenport, R., Donner, B., Neuer, S., Wefer, G.

“…The ocean off NW Africa is the second most important coastal upwelling system with a total annual primary production of 0.33 Gt of carbon per year (Carr in…”
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Particle fluxes in the ocean: comparison of sediment trap data with results from inverse modeling by Usbeck, R, Schlitzer, R, Fischer, G, Wefer, G

“…Biological production lowers the CO 2 concentrations in the surface layer of the ocean, and sinking detritus “pumps” nutrients and CO 2 into the deep ocean…”
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Organic carbon fluxes in the Atlantic and the Southern Ocean: relationship to primary production compiled from satellite radiometer data by Fischer, G, Ratmeyer, V, Wefer, G

“…Fluxes of organic carbon normalised to a depth of 1000 m from 18 sites in the Atlantic and the Southern Ocean are presented, comprising nine biogeochemical…”
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Glacial millennial-scale fluctuations in central African precipitation recorded in terrigenous sediment supply and freshwater signals offshore Cameroon by Adegbie, A.T., Schneider, R.R., Röhl, U., Wefer, G.

“…Evidence of rapid climatic oscillations like those observed in the Greenland ice cores and sediments from high latitudes of the northern Atlantic have been…”
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The impact of sediment provenance on barium-based productivity estimates by Klump, J, Hebbeln, D, Wefer, G

“…Biogenic barium in marine sediments has been suggested to be a reliable proxy of export productivity from the surface ocean and algorithms have been developed…”
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