666 Works

Physical oceanography and current meter data from mooring and CTD measurements at Fram Strait, supplement to: von Appen, Wilken-Jon; Schauer, Ursula; Somavilla, Raquel; Bauerfeind, Eduard; Beszczynska-Möller, Agnieszka (2015): Exchange of warming deep waters across Fram Strait. Deep Sea Research Part I: Oceanographic Research Papers, 103, 86-100

Wilken-Jon von Appen, Ursula Schauer, Raquel Somavilla Cabrillo, Eduard Bauerfeind & Agnieszka Beszczynska-Möller
Current meters measured temperature and velocity on 12 moorings from 1997 to 2014 in the deep Fram Strait between Svalbard and Greenland at the only deep passage from the Nordic Seas to the Arctic Ocean. The sill depth in Fram Strait is 2545 m. The observed temperatures vary between the colder Greenland Sea Deep Water and the warmer Eurasian Basin Deep Water. Both end members show a linear warming trend of 0.11±0.02°C/decade (GSDW) and 0.05±0.01°C/decade...

Age determination and age tie-points of sediment cores from the Timor Sea, supplement to: Kuhnt, Wolfgang; Holbourn, Ann E; Xu, Jian; Opdyke, Bradley N; De Deckker, Patrick; Röhl, Ursula; Mudelsee, Manfred (2015): Southern Hemisphere control on Australian monsoon variability during the late deglaciation and Holocene. Nature Communications, 6, 5916

Wolfgang Kuhnt, Ann E Holbourn, Jian Xu, Bradley N Opdyke, Patrick De Deckker, Ursula Röhl & Manfred Mudelsee
The evolution of the Australian monsoon in relation to high-latitude temperature fluctuations over the last termination remains highly enigmatic. Here we integrate high-resolution riverine runoff and dust proxy data from X-ray fluorescence scanner measurements in four well-dated sediment cores, forming a NE-SW transect across the Timor Sea. Our records reveal that the development of the Australian monsoon closely followed the deglacial warming history of Antarctica. A minimum in riverine runoff documents dry conditions throughout the...

Data collection of depth and time integrated Calanus finmarchicus abundances, averaged temperatures, and integrated Chlorophyll concentration in the North Atlantic Ocean, supplement to: Melle, Webjørn; Runge, Jeffrey A; Head, Erica J H; Plourde, Stéphane; Castellani, Claudia; Licandro, Priscilla; Pierson, James; Jónasdóttir, Sigrún Huld; Johnson, C; Broms, Cecilie; Debes, Høgni; Falkenhaug, Tone; Gaard, Eilif; Gislason, Astthor; Heath, Michael R; Niehoff, Barbara; Nielsen, Torkel Gissel; Pepin, Pierre; Stenevik, Erling Kaare; Chust, Guillem (2015): Biogeography of key mesozooplankton species in the North Atlantic and egg production of Calanus finmarchicus. Earth System Science Data, 7(2), 223-230

Webjørn Melle, Jeffrey A Runge, Erica J H Head, Stéphane Plourde, Claudia Castellani, Priscilla Licandro, James Pierson, Sigrún Huld Jónasdóttir, C Johnson, Cecilie Broms, Høgni Debes, Tone Falkenhaug, Eilif Gaard, Astthor Gislason, Michael R Heath, Barbara Niehoff, Torkel Gissel Nielsen, Pierre Pepin, Erling Kaare Stenevik & Guillem Chust
Here we present a new, pan-North-Atlantic compilation of data on key mesozooplankton species, including the most important copepod, Calanus finmarchicus. Distributional data of eight representative zooplankton taxa, from recent (2000-2009) Continuous Plankton Recorder data, are presented, along with basin-scale data of the phytoplankton colour index. Then we present a compilation of data on C. finmarchicus, including observations of abundance, demography, egg production and female size, with accompanying data on temperature and chlorophyll. . This is...

Profiles of diatoms, pollen, XRD, XRF and organic composition of two sediment cores (PG2022 and PG2023) from Lake Kyutyunda in Yakutia, NE Siberia, Russia, supplement to: Biskaborn, Boris K; Subetto, Dmitry A; Savelieva, Larissa A; Vakhrameeva, Polina; Hansche, Andreas; Herzschuh, Ulrike; Klemm, Juliane; Heinecke, Liv; Pestryakova, Luidmila A; Meyer, Hanno; Kuhn, Gerhard; Diekmann, Bernhard (2016): Late Quaternary vegetation and lake system dynamics in north-eastern Siberia: Implications for seasonal climate variability. Quaternary Science Reviews, 147, 406-421

Boris K Biskaborn, Dmitry A Subetto, Larissa A Savelieva, Polina Vakhrameeva, Andreas Hansche, Ulrike Herzschuh, Juliane Klemm, Liv Heinecke, Luidmila A Pestryakova, Hanno Meyer, Gerhard Kuhn & Bernhard Diekmann
Although the climate development over the Holocene in the Northern Hemisphere is well known, palaeolimnological climate reconstructions reveal spatiotemporal variability in northern Eurasia. Here we present a multi-proxy study from north-eastern Siberia combining sediment geochemistry, and diatom and pollen data from lake-sediment cores covering the last 38,000 cal. years. Our results show major changes in pyrite content and fragilarioid diatom species distributions, indicating prolonged seasonal lake-ice cover between ~13,500 and ~8,900 cal. years BP and...

Grain size and XRD analysis on Site 162-983, supplement to: Jonkers, Lukas; Barker, Stephen; Hall, Ian R; Prins, Maarten Arnoud (2015): Correcting for the influence of ice-rafted detritus on grain size-based paleocurrent speed estimates. Paleoceanography, 30(10), 1347-1357

Lukas Jonkers, Stephen Barker, Ian R Hall & Maarten Arnoud Prins
The grain size of deep-sea sediments provides an apparently simple proxy for current speed. However, grain size-based proxies may be ambiguous when the size distribution reflects a combination of processes, with current sorting only one of them. In particular, such sediment mixing hinders reconstruction of deep circulation changes associated with ice-rafting events in the glacial North Atlantic because variable ice-rafted detritus (IRD) input may falsely suggest current speed changes. Inverse modeling has been suggested as...

Tidal and spatial variations of DI13C and aquatic chemistry in a temperate tidal basin during winter time, supplement to: Winde, Vera; Böttcher, Michael Ernst; Escher, Peter; Böning, Philipp; Beck, Melanie; Liebezeit, Gerd; Schneider, Bernd (2014): Tidal and spatial variations of DI13C and aquatic chemistry in a temperate tidal basin during winter time. Journal of Marine Systems, 129, 396-404

Vera Winde, Michael Ernst Böttcher, Peter Escher, Philipp Böning, Melanie Beck & Bernd Schneider
Here, the pelagic carbonate system and the d13C signature of dissolved inorganic carbonate (DIC) were investigated in a tidal basin of the southern North Sea, the Jade Bay, with respect to tidal cycles and a transect towards the North Sea in winter time (January and November, 2010). Physical parameters, major and trace elements, and nutrient concentrations were considered, too. Primary production and pelagic organic matter respiration were negligible during winter time. Both, the compositional variations...

Dust flux records from the Subarctic North Pacific, supplement to: Serno, Sascha; Winckler, Gisela; Anderson, Robert F; Maier, Edith; Ren, Haojia Abby; Gersonde, Rainer; Haug, Gerald H (2015): Comparing dust flux records from the Subarctic North Pacific and Greenland: Implications for atmospheric transport to Greenland and for the application of dust as a chronostratigraphic tool. Paleoceanography, 30(6), 583-600

Sascha Serno, Gisela Winckler, Robert F Anderson, Edith Maier, Haojia Abby Ren, Rainer Gersonde & Gerald H Haug
We present a new record of eolian dust flux to the western Subarctic North Pacific (SNP) covering the past 27000 years based on a core from the Detroit Seamount. Comparing the SNP dust record to the NGRIP ice core record shows significant differences in the amplitude of dust changes to the two regions during the last deglaciation, while the timing of abrupt changes is synchronous. If dust deposition in the SNP faithfully records its mobilization...

Planktic foraminiferal sieve size specific δ¹³C and δ¹⁸O values and maximum test diameter from ODP sites 171-1051 and 120-748, supplement to: Edgar, Kirsty M; Bohaty, Steven M; Gibbs, Samantha J; Sexton, Philip F; Norris, Richard D; Wilson, Paul A (2013): Symbiont 'bleaching' in planktic foraminifera during the Middle Eocene Climatic Optimum. Geology, 41(1), 15-18

Kirsty M Edgar, Steven M Bohaty, Samantha J Gibbs, Philip F Sexton, Richard D Norris & Paul A Wilson
Many genera of modern planktic foraminifera are adapted to nutrient-poor (oligotrophic) surface waters by hosting photosynthetic symbionts, but it is unknown how they will respond to future changes in ocean temperature and acidity. Here we show that ca. 40 Ma, some fossil photosymbiont-bearing planktic foraminifera were temporarily 'bleached' of their symbionts coincident with transient global warming during the Middle Eocene Climatic Optimum (MECO). At Ocean Drilling Program (ODP) Sites 748 and 1051 (Southern Ocean and...

Description and chemical and mineral composition of iron oxide samples from two Finnish lakes, supplement to: Schwertmann, U; Carlson, L; Murad, E (1987): Properties of iron oxides in two Finnish lakes in relation to the environment of their formation. Clays and Clay Minerals, 35(4), 297-304

U Schwertmann, L Carlson & E Murad
Fifteen iron oxide accumulations from the bottoms of two Finnish lakes ("lake ores") were found to contain as much as 50% Fe. Differential X-ray powder diffraction and selective dissolution by oxalate showed that the samples consisted of poorly crystallized goethite and ferrihydrite. The crust ores of one lake had higher ferrihydrite to goethite ratios than the nodular ores of the other lake. The higher ferrihydrite proportion was attributed to a higher rate of Fe2+ supply...

Geochemistry of Lake Michigan manganese nodules, supplement to: Rossmann, Ronald; Callender, Edward (1969): Geochemistry of Lake Michigan manganese nodules. In: Proceedings - Twelfth Conference on Great Lakes Research, held at the University of Michigan, Ann Arbor, May 5-7 1969, 306-316

Ronald Rossmann & Edward Callender
Manganese nodules, similar in composition to other freshwater and shallow marine nodules, occur on the sediment surface of green bay and northern lake Michigan. Samples have been analyzed for their iron, manganese, calcium, magnesium, sodium, potassium, inorganic carbon, organic carbon, and total nitrogen content. The nodules average 20% iron and 6% manganese. the trace metal content (copper, zinc, cobalt, and nickel) of the samples is considerably lower than that of marine material. Interstitial water is...

Manganese nodules mesozoic deep-sea deposits off some Indonesian Islands, supplement to: Molengraaff, G A F (1915): On the occurrence of nodules of manganese in mesozoic deep-sea deposits from Borneo, Timor, and Rotti, their significance and mode of formation. Koninklijke Nederlandse Akademie van Weteschappen (Proceedings of the Royal Netherlands Academy of Arts and Sciences,Series B Physical Sciences; http://www.dwc.knaw.nl/DL/publications/PU00012518.pdf, 18(15), 415-430

G A F Molengraaff
Concretions of manganese have been discovered by the geological expedition to the islands of the Timor group in 1910—1912 in triassic and jurassic deep-sea deposits, on the Island of Timor, and also well developed in similar jurassic deposits on the island of Rotti, and previously, in 1894, the author noticed them in abysmal deposits of the pre-cretaceous probably jurassic Danau formation, occurring in West and East Borneo. On the island of Rotti nodules of manganese...

Geochemistry on manganese crusts from French Polynesia, supplement to: Le Suave, Raymond; Pichocki, C; Pautot, Guy; Hoffert, Michel; Morel, Yann; Voisset, M; Monti, S; Amossé, J; Kosakevitch, A (1989): Geological and mineralogical study of Co-rich ferromanganese crusts from a submerged atoll in the Tuamotu Archipelago (French Polynesia). Marine Geology, 87(2-4), 227-247

Raymond Le Suave, C Pichocki, Guy Pautot, Michel Hoffert, Yann Morel, M Voisset, S Monti, J Amossé & A Kosakevitch
The Tuamotu Archipelago in French Polynesia is a Co-rich ferromanganese crust province. The NODCO I survey (1986) provided detailed data on Co-rich crusts in this environment through the exploration of a restricted zone in the vicinity of Niau Island on the southern flank of the archipelago. This flat zone is a fossil atoll which, under the action of subsidence and tectonic movements, has collapsed to a water depth of 1000 m. The plateau is partially...

Analysis of Mn-deposits from Lake Eningi-Lampi, supplement to: Varentsov, Igor M (1972): Geochemical studies on the formation of iron-manganese nodules and crusts in recent basins, I. Eningi-Lampi Lake, Central Karelia. Acta Mineralogica-Petrographica, Szeged, XX/2, 363-381

Igor M Varentsov
The processes of formation of iron-manganese nodules and crusts have been studied on an example of the Eningi-Lampi lake, Central Karelia, where the relationships between the source of the ore, sedimentary materials and areas of their accumulation prove relatively simple and apparent. Nodules and crusts are composed mostly by birnessite, amorphous hydrous ferric oxides and hydro-goethite. They occur, as a rule, on the surface of relatively coarse-grained sediments, at the ground-water interface. Considerably in a...

Chemistry on manganese nodules from the Pacific Ocean, supplement to: Riley, J P; Sinhaseni, P (1958): Chemical composition of three manganese nodules from the Pacific Ocean. Journal of Marine Research, 17, 466-482

J P Riley & P Sinhaseni
Three manganese nodules from the Pacific Ocean have been analysed for 35 elements by using mainly spectrophotometric and spectrographic methods. Cu, Co, Ni, Zn, and Pb were found in amounts approaching 1 %, which far exceeds their average concentrations in igneous rocks. On the other hand, elements having readily hydrolysable ions, such as Ga, Sc, Zr, Y, La and Ti, are present only in amounts comparable with their concentrations in igneous rocks. Sb, Bit Be,...

Description, geochemistry and growth rate of buried nodules from the Central Indian Basin, supplement to: Banerjee, R; Iyer, S D; Dutta, P (1991): Buried nodules and associated sediments from the central Indian basin. Geo-Marine Letters, 11(2), 103-107

R Banerjee, S D Iyer & P Dutta
Buried nodules from siliceous sediments in the central Indian Basin are morphologically variable and mineralogically consist of d-MnO2 and incipient todorokite. Compositionally they are weakly diagenetic. The sediment coarse fractions (>63 µm) at different depths show variable abundances of micronodules, volcanic glass shards and biodebris. Dissolution of biodebris increases and abundance of micronodules decreases with increasing depth. Enrichment in Mn, Fe, Cu, Ni, Co, together with a decrease in organic carbon in the sediment column,...

Geochemistry of manganese nodules from a British Columbia fjord, supplement to: Grill, E V; Murray, John W; MacDonald, Richard Drummond (1968): Todorokite in Manganese Nodules from a British Columbia Fjord. Nature, 219(5152), 358-359

E V Grill, John W Murray & Richard Drummond MacDonald
Concretions of iron and manganese oxides and hydrous oxidesóobjects commonly called manganese nodulesóare widely distributed not only on the deep-sea floor but also in shallow marine environments1. Such concretions were not known to occur north of Cape Mendocino in the shallow water zones bordering the North-East Pacific Ocean until the summer of 1966 when they were recovered by one of us (J. W. M.) in dredge samples from Jervis Inlet, a fjord approximately 50 miles...

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