984 Works

Bacterial abundance in the Strait of Magellan, supplement to: Talbot, V; Giuliano, L; Bruni, V; Bianchi, Micheline (1997): Bacterial abundance, production and ectoproteolytic activity in the Strait of Magellan. Marine Ecology Progress Series, 154, 293-302

V Talbot, L Giuliano, V Bruni & Micheline Bianchi
Bacterial abundance, bacterial secondary production (BSP) and potential ectoproteolytic activity (PEA) were measured at 6 stations along the Strait of Magellan, South America, toward the end of summer 1995. Because of hydrological and climatic factors, 3 main areas could be identified in which the bacterial component displayed specific characteristics. In the Pacific Ocean side, subjected to freshwater inputs from rainfalls and melting of glaciers, the bacterial activities showed the highest values (BSP: 228.2 ng C/l...

Chemical composition and accumulation rates of chemical elements in metalliferous sediments from axial zones of the East Pacific Rise and the Mid-Atlantic Ridge, supplement to: Dekov, Vesselin M (1994): Hydrothermal Sedimentation in the Pacific Ocean. Moscow: Nauka Publ., 208 pp

Vesselin M Dekov
In the monograph metalliferous sediments of the East Pacific Rise near 21°S are under consideration. Distribution trends of chemical, mineral and grain size compositions of metalliferous sediments accumulated near the axis of this ultrafast spreading segment of the EPR are shown. On the basis of lithological and geochemical investigations spatial and temporal variations of hydrothermal activity are estimated. Migration rates of hydrothermal fields along the spreading axis are calculated. The model of cyclic hydrothermal process...

Nd, Pb, and Be isotopes of ferromanaganese crusts of the Atlantic Ocean, supplement to: Frank, Martin; van de Flierdt, Tina; Halliday, Alex N; Kubik, Peter W; Hattendorf, Bodo; Günther, Detlef (2003): Evolution of deep water mixing and wathering inputs in the central Atlantic Ocean over the past 33 Myr. Paleoceanography, 18(4), 1091

Martin Frank, Tina van de Flierdt, Alex N Halliday, Peter W Kubik, Bodo Hattendorf & Detlef Günther
The isotopic composition of Nd in present-day deep waters of the central and northeastern Atlantic Ocean is thought to fingerprint mixing of North Atlantic Deep Water with Antarctic Bottom Water. The central Atlantic Romanche and Vema Fracture Zones are considered the most important pathways for deep water exchange between the western and eastern Atlantic basins today. We present new Nd isotope records of the deepwater evolution in the fracture zones obtained from ferromanganese crusts, which...

Gas hydrate investigation at the Amsterdam mud volcano, supplement to: Pape, Thomas; Kasten, Sabine; Zabel, Matthias; Bahr, André; Abegg, Friedrich; Hohnberg, Hans-Jürgen; Bohrmann, Gerhard (2010): Gas hydrates in shallow deposits of the Amsterdam mud volcano, Anaximander Mountains, Northeastern Mediterranean Sea. Geo-Marine Letters, 30(3-4), 187-206

Thomas Pape, Sabine Kasten, Matthias Zabel, André Bahr, Friedrich Abegg, Hans-Jürgen Hohnberg & Gerhard Bohrmann
We investigated gas hydrate in situ inventories as well as the composition and principal transport mechanisms of fluids expelled at the Amsterdam mud volcano (AMV; 2,025 m water depth) in the Eastern Mediterranean Sea. Pressure coring (the only technique preventing hydrates from decomposition during recovery) was used for the quantification of light hydrocarbons in near-surface deposits. The cores (up to 2.5 m in length) were retrieved with an autoclave piston corer, and served for analyses...

Pore-water concentration of chloride in sediment cores and equilibrium temperatures and gas bubble analysis at ROV stations from the Vodyanitskii mud volcano, supplement to: Sahling, Heiko; Bohrmann, Gerhard; Artemov, Yuriy G; Bahr, André; Brüning, Markus; Klapp, Stephan A; Klaucke, Ingo; Kozlova, Elena; Nikolovska, Aneta; Pape, Thomas; Reitz, Anja; Wallmann, Klaus (2009): Vodyanitskii mud volcano, Sorokin Trough, Black Sea: Geological characterization and quantification of gas bubble streams. Marine and Petroleum Geology, 26(9), 1799-1811

Heiko Sahling, Gerhard Bohrmann, Yuriy G Artemov, André Bahr, Markus Brüning, Stephan A Klapp, Ingo Klaucke, Elena Kozlova, Aneta Nikolovska, Thomas Pape, Anja Reitz & Klaus Wallmann
Vodyanitskii mud volcano is located at a depth of about 2070 m in the Sorokin Trough, Black sea. It is a 500-m wide and 20-m high cone surrounded by a depression, which is typical of many mud volcanoes in the Black Sea. 75 kHz sidescan sonar show different generations of mud flows that include mud breccia, authigenic carbonates, and gas hydrates that were sampled by gravity coring. The fluids that flow through or erupt with...

Magnetostratigraphy of ODP Leg 178 holes, supplement to: Acton, Gary D; Guyodo, Yohan; Brachfeld, Stefanie A (2002): Magnetostratigraphy of sediment drifts on the continental rise of West Antarctica (ODP Leg 178, Sites 1095, 1096, and 1101). In: Barker, PF; Camerlenghi, A; Acton, GD; Ramsay, ATS (eds.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 178, 1-61

Gary D Acton, Yohan Guyodo & Stefanie A Brachfeld
We present revised magnetostratigraphic interpretations for Ocean Drilling Program Sites 1095, 1096, and 1101, cored in sediment drifts located off the Pacific margin of the Antarctic Peninsula. The revised interpretations incorporate a variety of observations and results obtained since the end of Leg 178, of which the most significant are new paleomagnetic measurements from U-channel samples, composite depth scales that allow stratigraphic correlation between multiple holes cored at a site, and revised biostratigraphic interpretations. The...

Composition of post-Jurassic deposits from the Northwest Pacific and the Galapagos Rift, data of DSDP Legs 62, 65, and 70, supplement to: Timofeev, Pyotr P; Varentsov, Igor M; Rateev, Mikhail A; Sakharov, B A; Choporov, Dmitry Ya; Aleksandrova, V A; Bogolyubova, L I; Drits, Victor A; Eremeev, V V; Zolotarev, Boris P; Renngarten, N V; Tsipursky, S I (1985): Problemy litologii Mirovogo okeana. Mineralogiya i geokhimiya Tikhogo okeana (Problems of Lithology of the World Ocean: Mineralogy and Geochemistry of the Pacific Ocean). Geological Institute of the USSR Academy of Sciences, Transactions, vol. 398. Nauka Publ. (Moscow); Timofeev, P.P. (Ed.)

Igor M Varentsov, Boris P Zolotarev, Pyotr P Timofeev, Mikhail A Rateev, B A Sakharov, Dmitry Ya Choporov, V A Aleksandrova, L I Bogolyubova, Victor A Drits, V V Eremeev, N V Renngarten & S I Tsipursky
The monogragh contains results of mineralogicai and geochemical studies of Mesozoic and Cenozoic deposits from the Pacific Ocean collected during Deep Sea Drilling Project. Special attention is paid on the aspects of geochemical history of post-Jurassic sedimentation in the central part of the Northwest Pacific, detailed characteristics of the main stages of sedimentary evolution are given: Early Cretaceons (protooceanic), Late Cretaceons (transitional) and Cenozoic (oceanic). Results of mineralogical and geochemical studies of hydrothermal deposits from...

Macrofauna communities in surface sediments in the Amundsen Basin, at the Morris Jesup Rise and at the Yermak Plateau (Eurasian Arctic Ocean), supplement to: Kröncke, Ingrid (1998): Macrofauna communities in the Amundsen Basin, at the Morris Jesup Rise and at the Yermak Plateau (Eurasian Arctic Ocean). Polar Biology, 19(6), 383-392

Ingrid Kröncke
Macrofaunal communities of the western Eurasian Arctic Ocean were studied along a transect from the North Pole, across the Amundsen Basin and Gakkel Ridge towards the Morris Jesup Rise and the Yermak Plateau. Samples were collected during autumn 1991, from depths of 560±4411 m, using a box corer. Macrofaunal species numbers varied from 1 to 11 per 0.02 m**2 in the basins approaching the Morris Jesup Rise and from 44 to 81 per 0.25 m**2...

Calcareous nannofossils of ODP sites 177-1088 and 177-1090, supplement to: Marino, Maria; Flores, José-Abel (2002): Data Report: Calcareous nannofossil stratigraphy at sites 1088 and 1090 (ODP Leg 177, Southern Ocean). In: Gersonde, R; Hodell, DA; Blum, P (eds.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 177, 1-14

Maria Marino & José-Abel Flores
During ODP Leg 177, a Miocene to Pliocene calcareous nannofossil record was recovered at Sites 1088 and 1090. Site 1088, located at 41°8'S, shows a continuous middle-upper Miocene to Pliocene carbonate sequence that was deposited at relatively high sedimentation rates (Shipboard Scientific Party, 1999a, doi:10.2973/odp.proc.ir.177.103.1999). Moreover, Site 1088 proved suitable for calcareous nannofossil analysis as a means to improve the biostratigraphy at this southern latitude.Site 1090 was drilled at 42°54'S; a tephra layer marks a...

Underway measurements of pCO2 in surface water and in air during DYFAMED cruises, supplement to: Bégovic, Miléna; Copin-Montégut, Claire (2002): Processes controlling annual variations in the partial pressure of CO2 in surface waters of the central northwestern Mediterranean Sea (Dyfamed site). Deep Sea Research Part II: Topical Studies in Oceanography, 49(11), 2031-2047

Miléna Bégovic & Claire Copin-Montégut
Measurements of the partial pressure of CO2 (pCO2) in surface waters, and other water properties were performed monthly during a 2-year period from February 1998 through February 2000, at a station in the open northwestern Mediterranean Sea (Dyfamed Station). On seasonal timescale, the pCO2 minimum of 300 µatm in winter was followed by an increase of 120 ?atm (pCO2 reaching 420 µatm) related to warming of surface waters in summer. Estimates of the underlying processes...

Benthic foraminifera in surface sediments of the Arabian Sea, supplement to: Heinz, Petra; Hemleben, Christoph (2003): Regional and seasonal variations of recent benthic deep-sea foraminifera in the Arabian Sea. Deep Sea Research Part I: Oceanographic Research Papers, 50(3), 435-447

Petra Heinz & Christoph Hemleben
Assemblages of living deep-sea benthic foraminifera, their densities, vertical distribution pattern, and diversity, were investigated in the intermonsoon period after the northeast monsoon in the Arabian Sea in spring 1997. Foraminiferal numbers show a distinct gradient from north to south, with a maximum of 623 foraminifera in 50 cm**3 at the northern site. High percentages of small foraminifera were found in the western and northern part of the Arabian Sea. Most stations show a typical...

Sea-surface temperature and salinity reconstruction for sediment core GeoB5844-2, supplement to: Arz, Helge Wolfgang; Pätzold, Jürgen; Müller, Peter J; Moammar, Mustafa O (2003): Influence of Northern Hemisphere climate and global sea level rise on the restricted Red Sea marine environment during termination I. Paleoceanography, 18(2), 1053

Helge Wolfgang Arz, Jürgen Pätzold, Peter J Müller & Mustafa O Moammar
We present high-resolution paleoceanographic records of surface and deep water conditions within the northern Red Sea covering the last glacial maximum and termination I using alkenone paleothermometry, stable oxygen isotopes, and sediment compositional data. Paleoceanographic records in the restricted desert-surrounded northern Red Sea are strongly affected by the stepwise sea level rise and appear to record and amplify well-known millennial-scale climate events from the North Atlantic realm. During the last glacial maximum (LGM), sea surface...

Cenomanian/Turonian sea surface temperatures of the equatorial Atlantic reconstructed from geochemical data, supplement to: Forster, Astrid; Schouten, Stefan; Moriya, Kazuyoshi; Wilson, Paul A; Sinninghe Damsté, Jaap S (2007): Tropical warming and intermittent cooling during the Cenomanian/Turonian oceanic anoxic event 2: Sea surface temperature records from the equatorial Atlantic. Paleoceanography, 22(1), PA1219

Astrid Forster, Stefan Schouten, Kazuyoshi Moriya, Paul A Wilson & Jaap S Sinninghe Damsté
Oceanic anoxic event 2 (OAE-2) occurring during the Cenomanian/Turonian (C/T) transition is evident from a globally recognized positive stable carbon isotopic excursion and is thought to represent one of the most extreme carbon cycle perturbations of the last 100 Myr. However, the impact of this major perturbation on and interaction with global climate remains unclear. Here we report new high-resolution records of sea surface temperature (SST) based on TEX86 and d 18O of excellently preserved...

Calcareous nannofossil biostratigraphy of ODP Hole 108-667A and DSDP Site 85-574, supplement to: Olafsson, Gunnar (1989): Quantitative calcareous nannofossil biostratigraphy of upper Oligocene to middle Miocene sediment from ODP Hole 667A and middle Miocene sediment from DSDP Site 574. In: Ruddiman, W; Sarnthein, M; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 108, 9-22

Gunnar Olafsson
Detailed quantitative analyses of selected calcareous nannofossil species were used to determine the placement of zonal boundaries. In Hole 667A in the equatorial Atlantic Ocean, Zones CP19 through CN5 were recognized, whereas at Site 574 in the equatorial Pacific Ocean, only the CN4/CN5 boundary could be determined. Boundaries were identified by sharp rises and declines in abundance at the beginnings and ends, respectively, of index fossil ranges. The sharp rise in abundance at the beginning...

Lithology, biostratigraphy, and geochemistry of the Black Sea sediments, DSDP Leg 42 (pt. 2) data, supplement to: Neprochnov, Yuri P; et al. (1980): Geological History of the Black Sea: Results of Deep-Sea Drilling. Moscow, Nauka Publ. (Yu.P. Neprochnov, Ed.), 212 pp.

Artyom A Geodekyan, Anastasiya P Zhuse, Alexey A Krylov, Vladimir M Kuptsov, Kazimir M Shimkus, G F Shneider, Alexander S Zhigunov, Tanzilya R Ivanova, Anatoly S Moskalev, Valentina V Mukhina, Egidius S Trimonis & Tatyana G Chernova
The monograph presents results of deep-sea drilling in the Black Sea carried out in 1975. Detailed lithological, biostratigraphic and geochemical studies of Miocene-Holocene sediments have been carried out by specialists from institutes of the USSR Academy of Sciences, Moscow State University and other organizations. Drilling results are compared with geophysical data. Geological history of the Black Sea basin is considered as well.

Abundance and opal input of radiolarian species of two sediment cores from the Atlantic sector of the Southern Ocean, supplement to: Jacot des Combes, Hélène; Abelmann, Andrea (2009): From species abundance to opal input: Simple geometric models of radiolarian skeletons from the Atlantic sector of the Southern Ocean. Deep Sea Research Part I: Oceanographic Research Papers, 56(5), 757-771

Hélène Jacot des Combes & Andrea Abelmann
Radiolarian-based paleoceanographic reconstructions generally use the abundance of selected radiolarian species. However, the recent focus on the opal flux and the development of isotope measurements in biogenic opal and the organic matter embedded in it demands a better knowledge of the origin of the opal. We present here an estimation of the opal content of the skeleton of 63 radiolarian species from two sites in the Southern Ocean. The skeletons are modelled as associations of...

Ikaite of sediment cores from the Zaire deep-sea fan, supplement to: Zabel, Matthias; Schulz, Horst D (2001): Importance of submarine landslides for non-steady state conditions in pore water systems - lower Zaire (Congo) deep-sea fan. Marine Geology, 176(1-4), 87-99

Matthias Zabel & Horst D Schulz
Most concentration profiles of sulfate in continental margin sediments show constant or continuously increasing gradients from the benthic boundary layer down to the deep sulfate reduction zone. However, a very marked change in this gradient has been observed several meters below the surface at many locations, which has been attributed to anoxic sulfide oxidation or to non-local transport mechanisms of pore waters. The subject of this study is to investigate whether this feature could be...

Chemical and physical oceanography on 131 CTD casts from METEOR cruise M59/2, supplement to: Steinfeldt, Reiner; Rhein, Monika; Bullister, John L; Tanhua, Toste (2009): Inventory changes in anthropogenic carbon from 1997–2003 in the Atlantic Ocean between 20°S and 65°N. Global Biogeochemical Cycles, 23, GB3010

Reiner Steinfeldt, Monika Rhein, John L Bullister & Toste Tanhua
The oceans absorb and store a significant portion of anthropogenic CO2 emissions, but large uncertainties remain in the quantification of this sink. An improved assessment of the present and future oceanic carbon sink is therefore necessary to provide recommendations for long-term global carbon cycle and climate policies. The formation of North Atlantic Deep Water (NADW) is a unique fast track for transporting anthropogenic CO2 into the ocean's interior, making the deep waters rich in anthropogenic...

Composition of sediments and cores from DSDP Legs 54 and 61-63, supplement to: Timofeev, Pyotr P; Rateev, Mikhail A; Renngarten, N V; Bogolyubova, L I; Varentsov, Igor M; Grechin, V I; Koporulin, V I; Zolotarev, Boris P; Eremeev, V V (1983): Problemy litologii Mirovogo okeana. Litologiya i geokhimiya Tikhogo okeana (Problems of Lithology of the World Ocean: Lithology and Geochemistry of the Pacific Ocean). Geological Institute of the USSR Academy of Sciences, Transactions, vol. 387. Nauka Publ. (Moscow); Timofeev, P.P. (Ed.), 218 pp

V I Grechin, Pyotr P Timofeev, Mikhail A Rateev, N V Renngarten, V I Koporulin, Boris P Zolotarev, Igor M Varentsov, L I Bogolyubova & V V Eremeev
The monograph gives results of studies of sediments and rocks collected from D/S Glomar Challenger in the Pacific Ocean. These studies have been based on the lithological facial analysis applied for the first time for identificating genesis of ocean sediments. These results include new ideas on formation of the Earth's sedimentary cover and can be used for constructing regional and global schemes of ocean paleogeography, reconstructing some structures, correlating sedimentation on continents and in oceans,...

Age models for ODP Leg 172 sites, supplement to: Gruetzner, Jens; Giosan, Liviu; Franz, Sven-Oliver; Tiedemann, Ralf; Cortijo, Elsa; Chaisson, William P; Flood, Roger D; Hagen, Sveinung; Keigwin, Lloyd D; Poli, Maria-Serena; Rio, Domenico; Williams, Trevor (2002): Astronomical age models for Pleistocene drift sediments from the western North Atlantic (ODP Sites 1055-1063). Marine Geology, 189(1-2), 5-23

Jens Gruetzner, Liviu Giosan, Sven-Oliver Franz, Ralf Tiedemann, Elsa Cortijo, William P Chaisson, Roger D Flood, Sveinung Hagen, Lloyd D Keigwin, Maria-Serena Poli, Domenico Rio & Thomas Williams
Ten ODP sites drilled in a depth transect (2164-4775 m water depth) during Leg 172 recovered high-deposition rate (>20 cm/kyr) sedimentary sections from sediment drifts in the western North Atlantic. For each site an age model covering the past 0.8-0.9 Ma has been developed. The time scales have a resolution of 10-20 kyr and are derived by tuning variations of estimated carbonate content to the orbital parameters precession and obliquity. Based on the similarity in...

Sea surface reconstruction of sediment cores off West Spitsbergen, supplement to: Hald, Morten; Ebbesen, Hanne; Forwick, Matthias; Godtliebsen, Fred; Khomenko, Liza; Korsun, Sergei; Ringstad Olsen, Lena; Vorren, Tore O (2004): Holocene paleoceanography and glacial history of the West Spitzbergen area, Euro-Arctic margin. Quaternary Science Reviews, 23(20-21), 2075-2088

Morten Hald, Hanne Ebbesen, Matthias Forwick, Fred Godtliebsen, Liza Khomenko, Sergei Korsun, Lena Ringstad Olsen & Tore O Vorren
Two sediment cores from the West Spitsbergen area, Euro-Arctic margin, MD99-2304 and MD99-2305, have been investigated for paleoceanographic proxies, including benthic and planktonic foraminifera, benthic foraminiferal stable isotopes and ice rafted debris. Core MD99-2304 is located on the upper continental margin, reflecting variations in the influx of Atlantic Water in the West Spitsbergen Current. Core MD99-2305 is located in Van Mijenfjord, picturing variations in tidewater glacier activity as well as fjord-ocean circulation changes. Surface water...

Planktonic foraminiferal δ¹⁸O values and apparent calcification depths of core-top samples along an east-west transect across the tropical Atlantic/Caribbean, supplement to: Steph, Silke; Regenberg, Marcus; Tiedemann, Ralf; Mulitza, Stefan; Nürnberg, Dirk (2009): Stable isotopes of planktonic foraminifera from tropical Atlantic/Caribbean core-tops: Implications for reconstructing upper ocean stratification. Marine Micropaleontology, 71(1-2), 1-19

Silke Steph, Marcus Regenberg, Ralf Tiedemann, Stefan Mulitza & Dirk Nürnberg
D18O values of nine tropical-subtropical planktonic foraminiferal species with different preferential habitat depths collected from 62 core-top samples along an east-west transect across the tropical Atlantic/Caribbean were used to test the applicability of interspecific d18O gradients for reconstructions of tropical upper ocean stratification. In general, the d18O difference (Delta d18O) between intermediate- and shallow-dwelling species decreases, and Delta d18O between deep and intermediate dwellers increases with increasing thermocline depth towards the west. The statistical significance...

Hydrochemical and geothermic data on the Caribbean-Mexican region, supplement to: Kononov, V I; Zverev, V P; Khutorskoy, Mikhail D; et al. (1990): Geothermal Activity and Sedimentogenesis in the Caribbean-Mexican Region. Geological Institute of the USSR Academy of Sciences, Transactions, vol. 448. Moscow, Nauka Publ. (P.P. Timofeev, Ed.), 192 pp

V I Dvorov, Dmitry V Grichuk, Mikhail D Khutorskoy & Boris G Polyak
Results of detailed geophysical, geological and gas- and hydrochemical research in the Caribbean-Mexican Basin and the Western Atlantic obtained during Cruise 4 of R/V Akademik Nikolaj Strakhov are published in the book. Distribution of the thermal field in different tectonic structures of the region is shown. Places of submarine hydrothermal vent discharge in tectonically active structures are described. They are confirmed by geothermal, geological and hydrochemical data. Based on lithofacies analysis of modern sediments installed...

Planktonic foraminifera and stable isotope record of ODP Site 162-980, supplement to: Oppo, Delia W; McManus, Jerry F; Cullen, James L (2006): Evolution and demise of the Last Interglacial warmth in the subpolar North Atlantic. Quaternary Science Reviews, 25(23-24), 3268-3277

Delia W Oppo, Jerry F McManus & James L Cullen
Detailed faunal, isotopic, and lithic marine records provide new insight into the stability and climate progression of the last interglacial period, Marine Isotope Stage (MIS) 5, which peaked approximately 125,000 years ago. In the eastern subpolar North Atlantic, at the latitude of Ireland, interglacial warmth of the ice volume minimum of substage 5e (MIS 5e) lasted ~10,000 years (10 ka) and its demise occurred in two cooling steps. The first cooling step marked the end...

Isotope and Mg/Ca measurements from Cores ME0005A-43JC and 202-1242 of tropical Pacific, supplement to: Benway, Heather M; Mix, Alan C; Haley, Brian A; Klinkhammer, Gary P (2006): Eastern Pacific Warm Pool paleosalinity and climate variability: 0-30 kyr. Paleoceanography, 21(3), PA3008

Heather M Benway, Alan C Mix, Brian A Haley & Gary P Klinkhammer
Multiproxy geologic records of d18O and Mg/Ca in fossil foraminifera from sediments under the Eastern Pacific Warm Pool (EPWP) region west of Central America document variations in upper ocean temperature, pycnocline strength, and salinity (i.e., net precipitation) over the past 30 kyr. Although evident in the paleotemperature record, there is no glacial-interglacial difference in paleosalinity, suggesting that tropical hydrologic changes do not respond passively to high-latitude ice sheets and oceans. Millennial variations in paleosalinity with...

Registration Year

  • 2010
    984

Resource Types

  • Collection
    984