Items where Author is "Helmke, Peer"

Article

Romero, OE, Mohtadi, M, Helmke, P and Hebbeln, D (2012) High interglacial diatom paleoproductivity in the westernmost Indo-Pacific Warm Pool during the past 130,000 years. Paleoceanography, 27. PA3209. doi:10.1029/2012PA002299

Helmke, P, Neuer, S, Lomas, MW, Conte, M and Freudenthal, T (2010) Cross-basin differences in particulate organic carbon export and flux attenuation in the subtropical North Atlantic gyre. Deep Sea Research Part I: Oceanographic Research Papers, 57(2). 213-227. doi:10.1016/j.dsr.2009.11.001

Fischer, G, Karakas, G, Blaas, M, Ratmeyer, V, Nowald, N, Schlitzer, R, Helmke, P, Davenport, R, Donner, B, Neuer, S and Wefer, G (2009) Mineral ballast and particle settling rates in the coastal upwelling system off NW Africa and the South Atlantic. International Journal of Earth Sciences, 98(2). 281-298. doi:10.1007/s00531-007-0234-7

Neuer, S, Cianca, A, Helmke, P, Freudenthal, T, Davenport, R, Meggers, H, Knoll, M, Santana-Casiano, JM, Gonzalez Davila, M, Rueda, MJ and Llinás, O (2007) Biogeochemistry and hydrography in the eastern subtropical North Atlantic gyre. Results from the European time-series station ESTOC. Progress in Oceanography, 72. 1-29. doi:10.1016/j.pocean.2006.08.001

Cianca, A, Helmke, P, Mouriño, B, Rueda, MJ, Llinás, O and Neuer, S (2007) Decadal analysis of hydrography and in situ nutrient budgets in the western and eastern North Atlantic subtropical gyre. Journal of Geophysical Research, 112(C7). doi:10.1029/2006JC003788

Helmke, P, Romero, OE and Fischer, G (2005) Northwest African upwelling and its effect on off-shore organic carbon export to the deep sea. Global Biogeochemical Cycles, 19(4). GB4015. doi:10.1029/2004GB002265

Stuut, JB, Zabel, M, Ratmeyer, V, Helmke, P, Schefuß, E, Lavik, G and Schneider, RR (2005) Provenance of present-day eolian dust collected off NW Africa. Journal of Geophysical Research-Atmospheres, 110. D04202. doi:10.1029/2004JD005161

Kuhlmann, H, Freudenthal, T, Helmke, P and Meggers, H (2004) Reconstruction of paleoceanography off NW Africa during the last 40,000 years: influence of local and regional factors on sediment accumulation. Marine Geology, 207(1-4). 209-224. doi:10.1016/j.margeo.2004.03.017

Meggers, H, Freudenthal, T, Nave, SO, Targarona, J, Abrantes, FF and Helmke, P (2002) Assessment of geochemical and micropaleontological sedimentary parameters as proxies of surface water properties in the Canary Islands region. Deep Sea Research Part II: Topical Studies in Oceanography, 49(17). 3631-3654. doi:10.1016/S0967-0645(02)00103-0

Davenport, R, Neuer, S, Helmke, P, Perez-Marrero, J and Llinás, O (2002) Primary productivity in the northern Canary Islands region as inferred from SeaWiFS imagery. Deep Sea Research Part II: Topical Studies in Oceanography, 49. 3481-3496. doi:10.1016/S0967-0645(02)00095-4

Book Section

Fischer, G, Neuer, S, Davenport, B, Helmke, P, Schlitzer, R, Romero, OE, Ratmeyer, V, Donner, B, Freudenthal, T, Meggers, H and Wefer, G (2010) The Northwest African Margin. In: Liu, KK, Atkinson, L, Quiñones, R and Talaue-McManus, L (eds.) Carbon and Nutrient Fluxes in Continental Margins: A Global Synthesis. The IGBP Series. Springer, Berlin, Heidelberg, 78-102.

Book

Bleil, U, Breitzke, M, Däumler, K, Dittert, N, Ewert, J, Gohl, K, Heesemann, B, Heinitz, WD, Helmke, P, Keil, H, Merkel, T, Pioch, B, Potozki, F, Rosiak, U, Schneider, RR, Schwenk, T, Spieß, V and Uenzelmann-Neben, G (1994) Report and preliminary results of Sonne Cruise SO86, Buenos Aires - Capetown, 22.4.-31.5.1993. Berichte aus dem Fachbereich Geowissenschaften der Universität Bremen, 051. Department of Geosciences, Bremen University. urn:nbn:de:gbv:46-ep000101881