983 Works

Carbonate system data on the Molokai reef flat, supplement to: Yates, Kimberly Kaye; Halley, Roberet B (2006): CO3**2- concentration and pCO2 thresholds for calcification and dissolution on the Molokai reef flat, Hawaii. Biogeosciences, 3, 357-369

Kimberly Kaye Yates & Roberet B Halley
The severity of the impact of elevated atmospheric pCO2 to coral reef ecosystems depends, in part, on how seawater pCO2 affects the balance between calcification and dissolution of carbonate sediments. Presently, there are insufficient published data that relate concentrations of pCO2 and CO3**2- to in situ rates of reef calcification in natural settings to accurately predict the impact of elevated atmospheric pCO2 on calcification and dissolution processes. Rates of net calcification and dissolution, CO3**2- concentrations,...

Seawater carbonate chemistry and biological processes during experiments with common cuttlefish Sepia officinalis, 2008, supplement to: Gutowska, Magdalena A; Pörtner, Hans-Otto; Melzner, Frank (2008): Growth and calcification in the cephalopod Sepia officinalis under elevated seawater pCO2. Marine Ecology Progress Series, 373, 303-309

Magdalena A Gutowska, Hans-Otto Pörtner & Frank Melzner
Ocean acidification and associated changes in seawater carbonate chemistry negatively influence calcification processes and depress metabolism in many calcifying marine invertebrates. We present data on the cephalopod mollusc Sepia officinalis, an invertebrate that is capable of not only maintaining calcification, but also growth rates and metabolism when exposed to elevated partial pressures of carbon dioxide (pCO2). During a 6 wk period, juvenile S. officinalis maintained calcification under ~4000 and ~6000 ppm CO2, and grew at...

Impact of ocean acidification and warming on the larval development of the spider crab Hyas araneus from different latitudes (54° vs 79°N), 2010, supplement to: Walther, Kathleen; Anger, Klaus; Pörtner, Hans-Otto (2010): Impact of ocean acidification and warming on the larval development of the spider crab Hyas araneus from different latitudes (54° vs 79°N). Marine Ecology Progress Series, 417, 159-170

Kathleen Walther, Klaus Anger & Hans-Otto Pörtner
The combined impacts of future scenarios of ocean acidification and global warming on the larvae of a cold-eurythermal spider crab, Hyas araneus L., were investigated in one of its southernmost populations (living around Helgoland, southern North Sea, 54°N) and one of the northernmost populations (Svalbard, North Atlantic, 79°N). Larvae were exposed at temperatures of 3, 9 and 15°C to present day normocapnia (380 ppm CO2) and to CO2 conditions expected for the near or medium-term...

Nd, Pb, and Be isotopes of ferromanaganese crusts of the South Pacific, supplement to: van de Flierdt, Tina; Frank, Martin; Halliday, Alex N; Hein, James R; Hattendorf, Bodo; Günther, Detlef; Kubik, Peter W (2004): Deep and bottom water export from the Southern Ocean to the Pacific Ocean over the past 38 million years. Paleoceanography, 19(1), PA1020

Tina van de Flierdt, Martin Frank, Alex N Halliday, James R Hein, Bodo Hattendorf, Detlef Günther & Peter W Kubik
The application of radiogenic isotopes to the study of Cenozoic circulation patterns in the South Pacific Ocean has been hampered by the fact that records from only equatorial Pacific deep water have been available. We present new Pb and Nd isotope time series for two ferromanganese crusts that grew from equatorial Pacific bottom water (D137-01, 'Nova', 7219 m water depth) and southwest Pacific deep water (63KD, 'Tasman', 1700 m water depth). The crusts were dated...

Geochemistry of sediments from the continental slope of the Ross Sea, Antarctica, supplement to: Ceccaroni, L; Frank, Martin; Frignani, M; Langone, Leonardo; Ravaioli, Mariangela; Mangini, Augusto (1998): Late Quaternary fluctuations of biogenic component fluxes on the continental slope of the Ross Sea, Antarctica. Journal of Marine Systems, 17(1-4), 515-525

L Ceccaroni, Martin Frank, M Frignani, Leonardo Langone, Mariangela Ravaioli & Augusto Mangini
A sediment core, collected from the western part of the continental slope of the Ross Sea at 2380 m water depth, records events of the last two climatic cycles (250 kyr). A 230Thex-based chronology was obtained and boundaries of the isotope stages were set assuming that biological productivity was enhanced during periods of less ice cover. Then, 230Thex0, organic carbon, biogenic silica and biogenic Ba distributions were compared to the glacial-interglacial stage boundaries and corresponding...

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...

Radionuclides in sediment cores of the Atlantic sector of the Southern Ocean, supplement to: Frank, Martin; Gersonde, Rainer; Rutgers van der Loeff, Michiel M; Bohrmann, Gerhard; Nürnberg, Christine Caroline; Kubik, Peter W; Suter, Martin; Mangini, Augusto (2000): Similar glacial and interglacial export bioproductivity in the Atlantic sector of the Southern Ocean: multiproxy evidence and implications for atmospheric CO2. Paleoceanography, 15(6), 642-658

Martin Frank, Rainer Gersonde, Michiel M Rutgers van der Loeff, Gerhard Bohrmann, Christine Caroline Nürnberg, Peter W Kubik, Martin Suter & Augusto Mangini
We present time series of export productivity proxy data including 230Thex-normalized deposition rates (rain rates) of 10Be, dissolution-corrected biogenic Ba, and biogenic opal as well as authigenic U concentrations which are complemented by rain rates of total (detrital) Fe and sea ice indicating diatom abundances from five sediment cores across the Atlantic sector of the Southern Ocean covering the past 150,000 years. The results suggest that 10Be rain rates and authigenic U concentration cannot serve...

Radionuclide analyses, and sedimentation and accumulation rates of sediment core PS2319-1, supplement to: Francois, Roger; Frank, Martin; Rutgers van der Loeff, Michiel M; Bacon, Michael P (2004): 230Th-normalization: an essential tool for interpreting sedimentary fluxes during the late Quaternary. Paleoceanography, 19, PA1018

Roger Francois, Martin Frank, Michiel M Rutgers van der Loeff & Michael P Bacon
There is increasing evidence indicating that syndepositional redistribution of sediment on the seafloor by bottom currents is common and can significantly affect sediment mass accumulation rates. Notwithstanding its common incidence, this process (generally referred to as sediment focusing) is often difficult to recognize. If redistribution is near synchronous to deposition, the stratigraphy of the sediment is not disturbed and sediment focusing can easily be overlooked. Ignoring it, however, can lead to serious misinterpretations of sedimentary...

Radiogenic isotope record of Arctic Ocean circulation and weathering inputs of the past 15 million years, supplement to: Haley, Brian A; Frank, Martin; Spielhagen, Robert F; Fietzke, Jan (2008): Radiogenic isotope record of Arctic Ocean circulation and weathering inputs of the past 15 million years. Paleoceanography, 23(1), PA1S13

Brian A Haley, Martin Frank, Robert F Spielhagen & Jan Fietzke
Lead (Pb), neodymium (Nd), and strontium (Sr) isotopic analyses were carried out on sediment leachates (reflecting the isotope composition of past seawater) and digests of the bulk residues (reflecting detrital continental inputs) of Integrated Ocean Drilling Program (IODP) Leg 302 and core PS2185 from the Lomonosov Ridge (Arctic Ocean). Our records are interpreted to reflect changes in continental erosion and oceanic circulation, driven predominantly by tectonic forcing on million-year timescales in the older (pre-2 Ma)...

Nd and Pb isotopes in ferromanganese crusts, supplement to: Frank, Martin; Whiteley, N; Kasten, Sabine; Hein, James R; O'Nions, R K (2002): North Atlantic Deep Water export to the Southern Ocean over the past 14 Myr: Evidence from Nd and Pb isotopes in ferromanganese crusts. Paleoceanography, 17(2), 1022

Martin Frank, N Whiteley, Sabine Kasten, James R Hein & R K O'Nions
The intensity of North Atlantic Deep Water (NADW) production has been one of the most important parameters controlling the global thermohaline ocean circulation system and climate. Here we present a new approach to reconstruct the overall strength of NADW export from the North Atlantic to the Southern Ocean over the past 14 Myr applying the deep water Nd and Pb isotope composition as recorded by ferromanganese crusts and nodules. We present the first long-term Nd...

Chemical composition of minerals and rocks from the Sierra Leone segment of the Mid-Atlantic Ridge and from the Markov depression, Central Atlantic, supplement to: Sharkov, E V; Bortnikov, Nikolay S; Zinger, T F; Chistyakov, A V (2005): Silicic Fe-Ti-oxide series of slow-spreading ridges: petrology, geochemistry, and genesis with reference to the Sierra Leone segment of the Mid-Atlantic Ridge axial zone at 6°N. Russian Journal of Earth Sciences, 7(4), 1-30

E V Sharkov, Nikolay S Bortnikov, T F Zinger & A V Chistyakov
Silicic Fe-Ti-oxide magmatic series was the first recognized in the Sierra Leone axial segment of the Mid-Atlantic Ridge near 6°N. The series consists of intrusive rocks (harzburgites, lherzolites, bronzitites, norites, gabbronorites, hornblende Fe-Ti-oxide gabbronorites and gabbronorite-diorites, quartz diorites, and trondhjemites) and their subvolcanic (ilmenite-hornblende dolerites) and, possibly, volcanic analogues (ilmenite-bearing basalts). Deficit of most incompatible elements in the rocks of the series suggests that parental melts derived from a source that had already been melted....

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...

Sedimentology of the southern Bellingshausen Sea, supplement to: Hillenbrand, Claus-Dieter; Larter, Robert D; Dowdeswell, Julian A; Ehrmann, Werner; Ó'Cofaigh, Colm; Benetti, Sara; Graham, Alastair G C; Grobe, Hannes (2010): The sedimentary legacy of a palaeo-ice stream on the shelf of the southern Bellingshausen Sea: Clues to West Antarctic glacial history during the Late Quaternary. Quaternary Science Reviews, 29(19-20), 2741-2763

Claus-Dieter Hillenbrand, Robert D Larter, Julian A Dowdeswell, Werner Ehrmann, Colm Ó'Cofaigh, Sara Benetti, Alastair G C Graham & Hannes Grobe
A major trough ('Belgica Trough') eroded by a palaeo-ice stream crosses the continental shelf of the southern Bellingshausen Sea (West Antarctica) and is associated with a trough mouth fan ('Belgica TMF') on the adjacent continental slope. Previous marine geophysical and geological studies investigated the bathymetry and geomorphology of Belgica Trough and Belgica TMF, erosional and depositional processes associated with bedform formation, and the temporal and spatial changes in clay mineral provenance of subglacial and glaciomarine...

Fatty acids, alcohols and hydrocarbons of microbial mats from Lake 2A on Kiritimati Island, supplement to: Bühring, Solveig I; Smittenberg, Rienk H; Sachse, Dirk; Lipp, Julius S; Golubic, S; Sachs, Julian P; Hinrichs, Kai-Uwe; Summons, Roger E (2009): A hypersaline microbial mat from the Pacific Atoll Kiritimati: Insight into composition and carbon fixation using biomarker analyses and a 13C-labeling approach. Geobiology, 7(3), 308 - 323

Solveig I Bühring, Rienk H Smittenberg, Dirk Sachse, Julius S Lipp, S Golubic, Julian P Sachs, Kai-Uwe Hinrichs & Roger E Summons
Modern microbial mats are widely recognized as useful analogs for the study of biogeochemical processes relevant to paleoenvironmental reconstruction in the Precambrian. We combined microscopic observations and investigations of biomarker composition to investigate community structure and function in the upper layers of a thick phototrophic microbial mat system from a hypersaline lake on Kiritimati (Christmas Island) in the Northern Line Islands, Republic of Kiribati. In particular, an exploratory incubation experiment with 13C-labeled bicarbonate was conducted...

Chemical and isotopic compositions of minerals from rocks of the Spiess Ridge, supplement to: Sushchevskaya, Nadezhda M; Koptev-Dvornikov, E V; Migdisova, N A; Khvorov, D M; Peyve, Alexander A; Skolotnev, Sergey G; Belyatsky, Boris V; Kamenetsky, V S (1999): Features of crystallization process and of geochemistry of tholeiite magma in the western end of the African-Antarctic Ridge (Spiess Ridge) in the area of the Bouvet triple junction. Russian Journal of Earth Sciences, 1(3), 221-250

Nadezhda M Sushchevskaya, E V Koptev-Dvornikov, N A Migdisova, D M Khvorov, Alexander A Peyve, Sergey G Skolotnev, Boris V Belyatsky & V S Kamenetsky
The world system of underwater rift-type spreading zones is a long-lived complex evolving system. It includes various provinces differing in age and geodynamics. Igneous activity, which accompanied formation of the oceanic lithosphere, can be used as an indicator of processes that controlled specific characters of different regions. The extreme western termination (Spiess Ridge) of the extensive South-West Indian Ridge in the Atlantic Ocean is referred to the African-Antarctic Ridge (called in the Russian literature) of...

AMS 14C dating points, isotopic compositions, Mg/Ca ratios and sea surface temperatures of sediment cores GeoB10029-4 and GeoB10038-4, supplement to: Mohtadi, Mahyar; Steinke, Stephan; Lückge, Andreas; Groeneveld, Jeroen; Hathorne, Ed C (2010): Glacial to Holocene surface hydrography of the tropical eastern Indian Ocean. Earth and Planetary Science Letters, 292(1-2), 89-97

Mahyar Mohtadi, Stephan Steinke, Andreas Lückge, Jeroen Groeneveld & Ed C Hathorne
Quantifying the spatial and temporal sea surface temperature (SST) and salinity changes of the Indo-Pacific Warm Pool is essential to understand the role of this region in connection with abrupt climate changes particularly during the last deglaciation. In this study we reconstruct SST and seawater d18O of the tropical eastern Indian Ocean for the past 40,000 years from two sediment cores (GeoB 10029-4, 1°30'S, 100°08'E, and GeoB 10038-4, 5°56'S, 103°15'E) retrieved offshore Sumatra. Our results...

Suspended paticulate matter and respiration experiments of Laternula elliptica in Potter Cove, King George Island, Western Antarctic Peninsula, supplement to: Philipp, Eva E R; Husmann, Gunnar; Abele, Doris (2011): The impact of sediment deposition and iceberg scour on the Antarctic soft shell clam Laternula elliptica at King George Island, Antarctica. Antarctic Science, 23(2), 127-138

Eva E R Philipp, Gunnar Husmann & Doris Abele
Recent rapid changes of air temperature on the western side of the Antarctic Peninsula results in increased sediment discharge and ice scouring frequencies in coastal regions. These changes are bound to especially affect slow growing, sessile filter feeders such as the Antarctic bivalve, Laternula elliptica, a long-lived and abundant key species with circumpolar distribution. We investigated the effect of sedimentation and ice scouring on small/young and large/old individuals at two closely located stations, distinctly influenced...

Oceanographic data set from 12 cruises and 1143 CTD/bottle stations of the Overflow/ICES project in 1973

Overflow '73/ICES
During the ICES Expedition Overflow '73, which had a core period of observation between 15 August and 15 September 1973, there was, for the first time, an opportunity to investigate synoptically the details of the ocean circulation between Greenland and Scotland. This area had hitherto attracted considerable attention because it was believed to be the scene of the exchange of warm saline Atlantic waters with the colder and less saline waters of the Norwegian Sea....

Physical oceanography at three CTD stations at Potter Cove, King George Island, West Antarctic Peninsula (1991-2012)

Irene R Schloss
Physical oceanography measured at three station in Potter cove, Western Antarctic Peninsula. This data collection gives the yearly measurements from 1991 to 2012.

Suspended particulate matter measured on water samples of two stations at Potter Cove, King George Island, Western Antarctic Peninsula (1992-2010)

Irene R Schloss
Suspended particular matter measured in the water column. Samples were taken at two station in Potter cove, Western Antarctic Peninsula. This data collection gives the yearly measurements from 1992 to 2010.

Chlorophyll a concentrations measured on water samples of two stations at Potter Cove, King George Island, Western Antarctic Peninsula (1991-2010)

Irene R Schloss
Chlorophyll a concentrations measured in the water column. Samples were taken at two station in Potter cove, Western Antarctic Peninsula. This data collection gives the yearly measurements from 1992 to 2010.

Precipitation measurements at station CPE-KG-62°S (2002-2010)

Maria del Carmen Domínguez & Adolfo Eraso
One of the areas on Earth where more significant effects of the Global Warming are being found is the area of the Peninsular and Insular Antarctic, between latitudes 62ºS - 63ºS. And in this part we have located one of the register stations of glacier discharge within the GLACKMA Project, the one called CPE-KG-62ºS, in the Collins icecap in the King George Island. The time series of glacier discharge obtained during these last years shows...

King George Island glacier dynamics: glacial discharge measurements at station CPE-KG-62°S (2002-2010), supplement to: Domínguez, Maria del Carmen; Eraso, Adolfo (2007): Substantial changes happened during the last years in the icecap of King George, Insular Antarctica. In: Tyk, A & Stefaniak, K (eds.): Karst and Criokarst, Studies of the Faculty of Earth Sciences, University of Silesia, 45, 87-110

Maria del Carmen Domínguez & Adolfo Eraso
One of the areas on Earth where more significant effects of the Global Warming are being found is the area of the Peninsular and Insular Antarctic, between latitudes 62° - 63° S. And in this part we have located one of the register stations of glacier discharge within the GLACKMA Project, the one called CPE-KG-62°S, in the Collins icecap in the King George Island. The time series of glacier discharge obtained during these last years...

Profile of sediment echo sounding with links to ParaSound data files and swath sonar multibeam bathymetry during METEOR cruise M70/2b, supplement to: Dupré, S; Buffet, G; Mascle, Jean; Foucher, Jean Paul; Gauger, Steffen; Boetius, Antje; Marfia, C; AsterX AUV Team; Quest ROV Team; BIONIL Scientific Party (2009): High-resolution mapping of large gas emitting mud volcanoes on the Egyptian continental margin (Nile Deep Sea Fan) by AUV surveys. Marine Geophysical Research, 29(4), 275-290

S Dupré, G Buffet, Jean Mascle, Jean Paul Foucher, Steffen Gauger, Antje Boetius, C Marfia, AsterX AUV Team, Quest ROV Team & BIONIL Scientific Party
Two highly active mud volcanoes located in 990-1,265 m water depths were mapped on the northern Egyptian continental slope during the BIONIL expedition of R/V Meteor in October 2006. High-resolution swath bathymetry and backscatter imagery were acquired with an autonomous underwater vehicle (AUV)-mounted multibeam echosounder, operating at a frequency of 200 kHz. Data allowed for the construction of ~1 m pixel bathymetry and backscatter maps. The newly produced maps provide details of the seabed morphology...

Foraminiferal abundance, carbonat concentration and dissolution index of sediment core W9903B-51GC, supplement to: LaMontagne, R W; Murray, Richard W; Wei, Kuo-Yen; Leinen, Margaret W; Wang, Chung-Ho (1996): Decoupling of carbonate preservation, carbonate concentration, and biogenic accumulation: A 400-kyr record from the central equatorial Pacific Ocean. Paleoceanography, 11(5), 553-562

R W LaMontagne, Richard W Murray, Kuo-Yen Wei, Margaret W Leinen & Chung-Ho Wang
In order to investigate the paleoceanographic record of dissolution of calcium carbonate (CaCO3) in the central equatorial Pacific Ocean, we have studied the relationship between three indices of foraminiferal dissolution and the concentration and accumulation of CaCO3, opal, and Corg in Core WEC8803B-GC51 (1.3°N, 133.6°W; 4410 m). This core spans the past 413 kyr of deposition and moved in and out of the lysoclinal transition zone during glacial-interglacial cycles of CaCO3 production and dissolution. The...

Registration Year

  • 2010
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  • Collection
    983

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  • PANGAEA
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