ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • 2025-2025  (24)
  • 2010-2014  (1,004,577)
  • 2025  (24)
  • 2011  (567,335)
  • 2010  (437,266)
Collection
Keywords
Publisher
Language
Years
Year
  • 1
    facet.materialart.
    Unknown
    A multi-proxy investigation of sediment core GeoB7165-1 and AMS 14C dating points from sediment cores off Conceptión (~ 36°S) (2010)
    PANGAEA
    In:  Supplement to: Mohtadi, Mahyar; Rossel, Pamela E; Lange, Carina Beatriz; Pantoja, Silvio; Böning, Philipp; Repeta, Daniel J; Grunwald, Maik; Lamy, Frank; Hebbeln, Dierk; Brumsack, Hans-Jürgen (2008): Deglacial pattern of circulation and marine productivity in the upwelling region off central-south Chile. Earth and Planetary Science Letters, 272, 221-230, https://doi.org/10.1016/j.epsl.2008.04.043
    Details
    Publication Date: 2024-07-01
    Description: A high-resolution sea surface temperature and paleoproductivity reconstruction on a sedimentary record collected at 36°S off central-south Chile (GeoB 7165-1, 36°33'S, 73°40'W, 797 m water depth, core length 750 cm) indicates that paleoceanographic conditions changed abruptly between 18 and 17 ka. Comparative analysis of several cores along the Chilean continental margin (30°-41°S) suggests that the onset and the pattern of deglacial warming was not uniform off central-south Chile due to the progressive southward migration of the Southern Westerlies and local variations in upwelling. Marine productivity augmented rather abruptly at 13-14 ka, well after the oceanographic changes.We suggest that the late deglacial increase in paleoproductivity off central-south Chile reflects the onset of an active upwelling system bringing nutrient-rich, oxygen-poor Equatorial SubsurfaceWater to the euphotic zone, and a relatively higher nutrient load of the Antarctic Circumpolar Current. During the Last Glacial Maximum, when the Southern Westerlies were located further north, productivity off central-south Chile, in contrast to off northern Chile, was reduced due to direct onshore-blowing winds that prevented coastal upwelling and export production.
    Keywords: Center for Marine Environmental Sciences; CHIPAL; CONDOR-Ia; East Pacific; GeoB3302-1; GeoB3359-3; GeoB7139-2; GeoB7165-1; GIK17748-2; Gravity corer (Kiel type); HOTLINE, HYGAPE; MARUM; off Chile; PUCK; SL; SO101; SO101/3_2-1; SO102/1; SO156/2; SO156/3; SO80_4; SO80a; Sonne; South-East Pacific
    Type: Dataset
    Format: application/zip, 6 datasets
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 2
    facet.materialart.
    Unknown
    Expanded GHOST database (2010)
    PANGAEA
    In:  Supplement to: Leduc, Guillaume; Schneider, Ralph R; Kim, Jung-Hyun; Lohmann, Gerrit (2010): Holocene and Eemian Sea surface temperature trends as revealed by alkenone and Mg/Ca paleothermometry. Quaternary Science Reviews, 29(7-8), 989-1004, https://doi.org/10.1016/j.quascirev.2010.01.004
    Details
    Publication Date: 2024-07-01
    Description: In this study we review a global set of alkenone- and foraminiferal Mg/Ca-derived sea surface temperatures (SST) records from the Holocene and compare them with a suite of published Eemian SST records based on the same approach. For the Holocene, the alkenone SST records belong to the actualized GHOST database (Kim, J.-H., Schneider R.R., 2004). The actualized GHOST database not only confirms the SST changes previously described but also documents the Holocene temperature evolution in new oceanic regions such as the Northwestern Atlantic, the eastern equatorial Pacific, and the Southern Ocean. A comparison of Holocene SST records stemming from the two commonly applied paleothermometry methods reveals contrasting - sometimes divergent - SST evolution, particularly at low latitudes where SST records are abundant enough to infer systematic discrepancies at a regional scale. Opposite SST trends at particular locations could be explained by out-of-phase trends in seasonal insolation during the Holocene. This hypothesis assumes that a strong contrast in the ecological responses of coccolithophores and planktonic foraminifera to winter and summer oceanographic conditions is the ultimate reason for seasonal differences in the origin of the temperature signal provided by these organisms. As a simple test for this hypothesis, Eemian SST records are considered because the Holocene and Eemian time periods experienced comparable changes in orbital configurations, but had a higher magnitude in insolation variance during the Eemian. For several regions, SST changes during both interglacials were of a similar sign, but with higher magnitudes during the Eemian as compared to the Holocene. This observation suggests that the ecological mechanism shaping SST trends during the Holocene was comparable during the penultimate interglacial period. Although this "ecology hypothesis" fails to explain all of the available results, we argue that any other mechanism would fail to satisfactorily explain the observed SST discrepancies among proxies.
    Keywords: 108-658C; 138-846; 160-967D; 160-969E; 161-977; 162-984; 165-1002C; 165-999A; 167-1012B; 167-1017E; 167-1019C; 175-1078C; 175-1084B; 184-1145C; 2; 202-1233; 202-1240; 202-1242; 225514; 225517; 71; 90b; 96; 96-619; A-7; AD91-17; Alboran Sea; also published as VM28-122; Angola Basin; Arabian Sea; Arctic Ocean; Atlantic Ocean; AUSCAN; Bay of Bengal; BCR; BENEFIT/4; BENGAL FAN; Benguela Current, South Atlantic Ocean; BOFS31/1K; BOFS31#1; Box corer (Reineck); BS79-33; BS79-38; CALYPSO; Calypso Corer; Canarias Sea; Caribbean Sea; Cayman Rise, Caribbean Sea; CD159-12; CD53; CEPAG; CH07-98-GGC19; Charles Darwin; Chatham Rise; CHIPAL; Cocos Ridge; COMPCORE; Composite Core; Congo Fan; D13882; D249; De Soto Canyon; Discovery (1962); DRILL; Drilling/drill rig; Eastern Basin; East Pacific; Emperor Seamounts; Equatorial East Pacific; GC; GeoB1023-5; GeoB3129-1; GeoB3313-1; GeoB3910-2; GeoB4509-2; GeoB4905-4; GeoB5546-2; GeoB5844-2; GeoB5901-2; GeoB6007-2; GeoB6518-1; GeoB7139-2; GeoB7926-2; GEOSCIENCES, MARMARCORE; GeoTü SL71; GGC; GGC-15-1; Giant box corer; Giant gravity corer; Giant piston corer; GIK17748-2; GIK17940-2; GIK17964-1; GIK18252-3; GIK18287-3; GIK23258-2; GINCO 3; GKG; Glomar Challenger; GPC; Gravity corer; Gravity corer (Kiel type); Gulf of Mexico; Hakuho-Maru; HOTLINE, HYGAPE; IMAGES I; IMAGES III - IPHIS; IMAGES IV-IPHIS III; IMAGES IX - PAGE; IMAGES V; IMAGES VIII - MONA; IMAGES VII - WEPAMA; Indian Ocean; Indonesia; Integrierte Analyse zwischeneiszeitlicher Klimadynamik; INTERDYNAMIK; IOW225514; IOW225517; IOW4509B; James Clark Ross; Joides Resolution; JOPSII-6; JR20000727; JR51; JR51GC-35; JT96-0909PC; KAL; Kasten corer; KH-01-3; KH-01-3-19; KL; KL_Mg; Knorr; KNR176-2; KNR176-JPC32; Kurilen Trench; LAPAZ21P; Leg108; Leg138; Leg160; Leg161; Leg162; Leg165; Leg167; Leg175; Leg184; Leg202; Leg96; Le Suroît; M34/4; M35/1; M35003-4; M39/1; M39/1_08-3; M39008-3; M40/4; M40/4_87-6SL; M40/4_SL67; M40/4_SL71; M40/4_SL78; M40/4_SL78-3; M40/4_SL87; M41/1; M42/4b; M44/1; M44/1_74KL; M44/1_KL71; M44/3; M45/1; M45/5a; M47/3; M53/1; M6/6; M7/2; Marge Ibérique; Marion Dufresne (1972); Marion Dufresne (1995); Marmara Sea; MD01-2334; MD012378; MD01-2378; MD012390; MD01-2390; MD012412; MD01-2412; MD012416; MD01-2416; MD01-2443; MD022529; MD02-2529; MD022575; MD02-2575; MD032611G; MD03-2611G; MD03-2707; MD101; MD106; MD111; MD114; MD122; MD123; MD126; MD127; MD13; MD131; MD77-194; MD79-257; MD85674; MD94-103; MD952011; MD95-2011; MD952015; MD95-2015; MD952042; MD95-2042; MD952043; MD95-2043; MD972120; MD97-2120; MD972121; MD97-2121; MD972125; MD97-2125; MD972141; MD97-2141; MD972151; MD97-2151; MD982162; MD98-2162; MD982165; MD98-2165; MD982170; MD98-2170; MD982176; MD98-2176; MD982181; MD98-2181; MD99-2155; MD99-2251; MD99-2334; ME0005A; ME0005A-24JC; Melville; Meteor (1986); MONITOR MONSUN; NE-Brazilian continental margin; NEMO; Northeast Atlantic; Northeast Brasilian Margin; Northern Red Sea; North Pacific Ocean; North-West African margin; OCE326-GGC26; OCE326-GGC30; off Cameroon; OSIRIS4; OSIRIS III; Pacific Ocean; PAKOMIN; PC; PC-17; PC-2; PC-4; Petr Kottsov; Piston corer; Piston corer (BGR type); Piston corer Meischner large; PL07-39PC; Portuguese Margin; PUCK; RAPID-12-1K; RC11; RC1112; RC11-238; Reykjanes Ridge; RL11; Robert Conrad; Rockall; SCS90-36; SL; SO102/1; SO115; SO115_05; SO115_40; SO136; SO136_011GC; SO139; SO139-74KL; SO156/2; SO80_4; SO80a; SO90; SO90_136KL; SO90_39KG; SO90_93KL; SO93/3; SO93/3_126KL; SO95; Sonne; South Atlantic Ocean; South China Sea; South-East Pacific; Southern Ocean; Southern Okhotsk Sea; South Pacific Ocean; SSDP102; St.14; St.20; SU81-18; SUNDAFLUT; Sunda Shelf; TASQWA; Timor Sea; TN057-21; TR163-19; TR163-22; TY93-905; TY93929/P; U938; V19; V19-27; V19-28; V19-30; V21; V21-30; V28; V28-122; Vema; Victor Hensen; Vietnam shelf; Voring Plateau
    Type: Dataset
    Format: application/zip, 133 datasets
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 3
    facet.materialart.
    Unknown
    Sinking rates of particles measured from deployments in the Atlantic Ocean based on seasonal data (2010)
    PANGAEA
    In:  Supplement to: Fischer, Gerhard; Karakas, Gökay (2009): Sinking rates and ballast composition of particles in the Atlantic Ocean: implications for the organic carbon fluxes to the deep ocean. Biogeosciences, 6, 85-102, https://doi.org/10.5194/bg-6-85-2009
    Details
    Publication Date: 2024-07-01
    Description: The flux of materials to the deep sea is dominated by larger, organic-rich particles with sinking rates varying between a few meters and several hundred meters per day. Mineral ballast may regulate the transfer of organic matter and other components by determining the sinking rates, e.g. via particle density. We calculated particle sinking rates from mass flux patterns and alkenone measurements applying the results of sediment trap experiments from the Atlantic Ocean. We have indication for higher particle sinking rates in carbonate-dominated production systems when considering both regional and seasonal data. During a summer coccolithophorid bloom in the Cape Blanc coastal upwelling off Mauritania, particle sinking rates reached almost 570 m per day, most probably due the fast sedimentation of densely packed zooplankton fecal pellets, which transport high amounts of organic carbon associated with coccoliths to the deep ocean despite rather low production. During the recurring winter-spring blooms off NW Africa and in opal-rich production systems of the Southern Ocean, sinking rates of larger particles, most probably diatom aggregates, showed a tendency to lower values. However, there is no straightforward relationship between carbonate content and particle sinking rates. This could be due to the unknown composition of carbonate and/or the influence of particle size and shape on sinking rates. It also remains noticeable that the highest sinking rates occurred in dust-rich ocean regions off NW Africa, but this issue deserves further detailed field and laboratory investigations. We obtained increasing sinking rates with depth. By using a seven-compartment biogeochemical model, it was shown that the deep ocean organic carbon flux at a mesotrophic sediment trap site off Cape Blanc can be captured fairly well using seasonal variable particle sinking rates. Our model provides a total organic carbon flux of 0.29 Tg per year down to 3000 m off the NW African upwelling region between 5 and 35° N. Simple parameterisations of remineralisation and sinking rates in such models, however, limit their capability in reproducing the flux variation in the water column.
    Keywords: ANT-III/2; ANT-VII/5; BO3; BO3_trap; Bouvet Island; Cape Blanc; CB1_trap; CB13; CB13_trap; CB2_trap; CB3_trap; CB4_trap; CB7; CB7_trap; Center for Marine Environmental Sciences; CV1-2_trap; CV2; CV2_trap; EA7; EA7_trap; EA8; EA8_trap; EA9; EA9_trap; East Equatorial Atlantic; Eastern equatorial Atlantic; GBN3_trap; GBS5; GBS5_trap; GeoB2212-8; GeoB2908; KG1_trap; M12/1; M16/2; M22/1; M29/3; M6/6; M9/4; MARUM; Meteor (1986); MOOR; Mooring; Mooring (long time); MOORY; Northwest Africa; PF3; Polar Front; Polarstern; PS06; PS14; Trap; TRAP; Trap, sediment; TRAPS; WA10; WA10_trap; WA11; WA11_trap; WA13; WA13_trap; WA14; WA14_trap; WA19; WA19_trap; WA4_trap; WA7_trap; WA8_trap; WA9; WA9_trap; Walvis Ridge, Southeast Atlantic Ocean; Western Atlantic; Western Equatorial Atlantic; WR2_trap
    Type: Dataset
    Format: application/zip, 2 datasets
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 4
    facet.materialart.
    Unknown
    Grain-size analyses and bulk chemistry determined in surface sediment samples along the Chilean continental margin in the Southeast Pacific Ocean (2010)
    PANGAEA
    In:  Supplement to: Stuut, Jan-Berend W; Kasten, Sabine; Lamy, Frank; Hebbeln, Dierk (2007): Sources and modes of terrigenous sediment input to the Chilean continental slope. Quaternary International, 161(1), 67-76, https://doi.org/10.1016/j.quaint.2006.10.041
    Details
    Publication Date: 2024-07-01
    Description: Physical, chemical, and mineralogical properties of a set of surface sediment samples collected along the Chilean continental slope (21-44°S) are used to characterise present-day sedimentation patterns and sediment provenance on the Chilean margin. Despite the presence of several exceptional latitudinal gradients in relief, oceanography, tectonic evolution, volcanic activity and onshore geology, the present-day input of terrigenous sediments to the Chilean continental margin appears to be mainly controlled by precipitation gradients, and source-rock composition in the hinterland. General trends in grain size denote a southward decrease in median grain-size of the terrigenous (Corganic, CaCO3 and Opal-free) fraction, which is interpreted as a shift from aeolian to fluvial sedimentation. This interpretation is supported by previous observations of southward increasing bulk sedimentation rates. North-south trends in sediment bulk chemistry are best recognised in the iron (Fe) and titanium (Ti) vs. potassium (K) and aluminium (Al) ratios of the sediments that most likely reflect the contribution of source rocks from the Andean volcanic arc. These ratios are high in the northernmost part, abruptly decrease at 25°S, and then more or less constantly increase southwards to a maximum at ~40°S.
    Keywords: Center for Marine Environmental Sciences; CTD/Rosette; CTD-RO; GeoB7103-4; GeoB7104-6; GeoB7106-1; GeoB7108-1; GeoB7112-1; GeoB7114-1; GeoB7115-1; GeoB7116-1; GeoB7118-1; GeoB7119-1; GeoB7120-1; GeoB7121-1; GeoB7122-1; GeoB7123-1; GeoB7127-1; GeoB7128-1; GeoB7129-1; GeoB7130-1; GeoB7131-1; GeoB7132-1; GeoB7133-1; GeoB7134-1; GeoB7135-1; GeoB7136-1; GeoB7137-1; GeoB7138-1; GeoB7139-1; GeoB7140-1; GeoB7141-1; GeoB7142-1; GeoB7144-1; GeoB7147-1; GeoB7148-1; GeoB7149-1; GeoB7150-1; GeoB7152-1; GeoB7153-1; GeoB7154-2; GeoB7155-1; GeoB7156-1; GeoB7157-1; GeoB7158-1; GeoB7159-1; GeoB7160-4; GeoB7161-5; GeoB7162-4; GeoB7163-5; GeoB7166-2; GeoB7167-4; GeoB7169-2; GeoB7170-1; GeoB7171-2; GeoB7172-4; GeoB7173-4; GeoB7174-3; GeoB7175-4; GeoB7177-3; GeoB7179-1; GeoB7180-1; GeoB7181-1; GeoB7182-1; GeoB7183-1; GeoB7186-1; GeoB7187-1; GeoB7189-1; GeoB7190-1; GeoB7191-1; GeoB7192-1; GeoB7194-1; GeoB7195-1; GeoB7197-1; GeoB7198-1; GeoB7199-2; GeoB7202-1; GeoB7203-1; GeoB7207-1; GeoB7208-1; GeoB7211-1; GeoB7212-1; GeoB7213-1; GeoB7215-1; GeoB7216-1; GeoB7218-1; GeoB7219-1; MARUM; MUC; MultiCorer; off Chile; PUCK; SO156/1; SO156/2; SO156/3; Sonne
    Type: Dataset
    Format: application/zip, 3 datasets
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 5
    facet.materialart.
    Unknown
    Colour reflectance and descriptions of seven sediment cores from the Weddell Sea (2011)
    PANGAEA
    In:  Supplement to: Weber, Michael E; Clark, Peter U; Ricken, Werner; Mitrovica, Jerry X; Hostetler, Steven W; Kuhn, Gerhard (2011): Interhemispheric ice-sheet synchronicity during the last glacial maximum. Science, 334(6060), 1265-1269, https://doi.org/10.1126/science.1209299
    Details
    Publication Date: 2024-07-01
    Description: The timing of the last maximum extent of the Antarctic ice sheets relative to those in the Northern Hemisphere remains poorly understood. We develop a chronology for the Weddell Sea sector of the East Antarctic Ice Sheet that, combined with ages from other Antarctic ice-sheet sectors, indicates that the advance to and retreat from their maximum extent was within dating uncertainties synchronous with most sectors of Northern Hemisphere ice sheets. Surface climate forcing of Antarctic mass balance would probably cause an opposite response, whereby a warming climate would increase accumulation but not surface melting. Our new data support teleconnections involving sea-level forcing from Northern Hemisphere ice sheets and changes in North Atlantic deep-water formation and attendant heat flux to Antarctic grounding lines to synchronize the hemispheric ice sheets.
    Keywords: ANT-V/4; ANT-VI/3; ANT-VIII/5; AWI_Paleo; Gravity corer (Kiel type); Halley Bay; Lyddan Island; Paleoenvironmental Reconstructions from Marine Sediments @ AWI; Polarstern; Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas; PS10; PS10/778; PS12; PS12/319; PS1498-2; PS1599-3; PS16; PS16/409; PS16/410; PS16/413; PS16/417; PS16/432; PS1789-1; PS1790-1; PS1791-2; PS1793-2; PS1798-1; SL; SPP1158; Weddell Sea
    Type: Dataset
    Format: application/zip, 10 datasets
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 6
    facet.materialart.
    Unknown
    Gas hydrates of nonpressurized (GC) and pressurized (DAPC) sediment cores from the Hakon Mosby Mud Volcano, SW Barents Sea (2011)
    PANGAEA
    In:  Supplement to: Pape, Thomas; Feseker, Tomas; Kasten, Sabine; Fischer, David; Bohrmann, Gerhard (2011): Distribution and abundance of gas hydrates in near-surface deposits of the Håkon Mosby Mud Volcano, SW Barents Sea. Geochemistry, Geophysics, Geosystems, 12(9), Q09009, 21 PP., https://doi.org/10.1029/2011GC003575
    Details
    Publication Date: 2024-07-01
    Description: The occurrence of gas hydrates at submarine mud volcanoes (MVs) located within the gas hydrate stability zone (GHSZ) is controlled by upward fluid and heat flux associated with MV activity. Determining the spatial distribution of gas hydrates at MVs is crucial to evaluate their sensitivity to known episodic changes in volcanic activity. We determined the hydrocarbon inventory and spatial distribution of hydrates at an individual MV structure. The Håkon Mosby Mud Volcano (HMMV), located at 1,250 m water depth on the Barents Sea slope, was investigated by combined pressure core sampling, heat flow measurements, and pore water chemical analysis. Quantitative pressure core degassing revealed gas-sediment ratios between 3.1 and 25.7, corresponding to hydrate concentrations of up to 21.3% of the pore volume. Hydrocarbon compositions and physicochemical conditions imply that gas hydrates incipiently crystallize as structure I hydrate, with a dissociation temperature of around 13.8°C at this water depth. Based on numerous in situ measurements of the geothermal gradient in the seabed, pore water sulfate profiles and microbathymetric data, we show that the thickness of the GHSZ increases from less than 1 m at the warm center to around 47 m in the outer parts of the HMMV. We estimate the total mass of hydrate-bound methane stored at the HMMV to be about 102.5 kt, of which 2.8 kt are located within the morphological Unit I around the center and thus are likely to be dissociated in the course of a large eruption.
    Keywords: ARK-XXII/1b; Center for Marine Environmental Sciences; GC; Gravity corer; HERMES; Hotspot Ecosystem Research on the Margins of European Seas; MARUM; Norwegian Sea; PC; Piston corer; Polarstern; PS70; PS70/053-1; PS70/054-1; PS70/068-1; PS70/069-1; PS70/081-1; PS70/092-1; PS70/093-1; PS70/094-1; PS70/097-1; PS70/098-1; PS70/102-1; PS70/110-1; PS70/113-1; PS70/117-1; PS70/122-1; PS70/126-1; PS70/133-1
    Type: Dataset
    Format: application/zip, 5 datasets
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 7
    facet.materialart.
    Unknown
    Last glacial maximum sediment record of the southern Weddell Sea shelf (2011)
    PANGAEA
    In:  Supplement to: Hillenbrand, Claus-Dieter; Melles, Martin; Kuhn, Gerhard; Larter, Robert D (2012): Marine geological constraints for the grounding-line position of the Antarctic Ice Sheet on the southern Weddell Sea shelf at the Last Glacial Maximum. Quaternary Science Reviews, 32, 25-47, https://doi.org/10.1016/j.quascirev.2011.11.017
    Details
    Publication Date: 2024-07-01
    Description: Abstract: The history of grounded ice-sheet extent on the southern Weddell Sea shelf during the Last Glacial Maximum (LGM) and the timing of post-LGM ice-sheet retreat are poorly constrained. Several glaciological models reconstructed widespread grounding and major thickening of the Antarctic Ice Sheet in the Weddell Sea sector at the LGM. In contrast, recently published onshore data and modelling results concluded only very limited LGM-thickening of glaciers and ice streams feeding into the modern Filchner and Ronne ice shelves. These studies concluded that during the LGM ice shelves rather than grounded ice covered the Filchner and Ronne troughs, two deep palaeo-ice stream troughs eroded into the southern Weddell Sea shelf. Here we review previously published and unpublished marine geophysical and geological data from the southern Weddell Sea shelf. The stratigraphy and geometry of reflectors in acoustic sub-bottom profiles are similar to those from other West Antarctic palaeo-ice stream troughs, where grounded ice had advanced to the shelf break at the LGM. Numerous cores from the southern Weddell Sea shelf recovered sequences with properties typical for subglacially deposited tills or subglacially compacted sediments. These data sets give evidence that grounded ice had advanced across the shelf during the past, thereby grounding in even the deepest parts of the Filchner and Ronne troughs. Radiocarbon dates from glaciomarine sediments overlying the subglacial deposits are limited, but indicate that the ice grounding occurred at the LGM and that ice retreat started before ~15.1 corrected 14C kyrs before present (BP) on the outer shelf and before ~7.7 corrected 14C kyrs BP on the inner shelf, which is broadly synchronous with ice retreat in other Antarctic sectors. The apparent mismatch between the ice-sheet reconstructions from marine and terrestrial data can be attributed to ice streams with very low surface profiles (similar to those of "ice plains") that had advanced through Filchner Trough and Ronne Trough at the LGM. Considering the global sea-level lowstand of ~130 metres below present, a low surface slope of the expanded LGM-ice sheet in the southern Weddell Sea can reconcile grounding-line advance to the shelf break with limited thickening of glaciers and ice streams in the hinterland. This scenario implies that ice-sheet growth in the Weddell Sea sector during the LGM and ice-sheet drawdown throughout the last deglaciation could only have made minor contributions to the major global sea-level fluctuations during these times.
    Keywords: 002; 011; 013; 016; 2-19-1; 2-20-1; 2-22-1; 3-10-1; 3-1-1; 3-11-1; 3-1-2; 3-7-1; ANT-I/2; ANT-II/4; ANT-III/3; ANT-IV/3; ANT-V/4; ANT-VI/3; AWI_Paleo; Cape Fiske; Dredge; DRG; Filchner Shelf; Filchner Trough; G1; G15; G17; G18; G2; G5; GC; Giant box corer; GKG; Glacier; Gould Bay; Gravity corer; Gravity corer (Kiel type); International Weddell Sea Oceanographic Expeditions; IWSOE68; IWSOE68-002; IWSOE68-011; IWSOE68-013; IWSOE68-016; IWSOE69; IWSOE69-G1; IWSOE69-G15; IWSOE69-G17; IWSOE69-G18; IWSOE69-G2; IWSOE69-G5; IWSOE70; IWSOE70-2-19-1; IWSOE70-2-20-1; IWSOE70-2-22-1; IWSOE70-3-10-1; IWSOE70-3-1-1; IWSOE70-3-11-1; IWSOE70-3-1-2; IWSOE70-3-7-1; MG; Multiboxcorer; NARE77; NARE77_11; NARE77_12; NARE77_13; NARE77_14; NARE77_16; NARE77_19; NARE77_20; NARE77_22; NARE77_23; NARE79; NARE79_210; NARE79_212; NARE79_213; NARE79_214; NARE79_221; Paleoenvironmental Reconstructions from Marine Sediments @ AWI; PC; Piston corer; Polarsirkel; Polarstern; PS01; PS01/154; PS01/155; PS01/156; PS01/161; PS01/162; PS01/177; PS01/184; PS01/186; PS01/189; PS04; PS04/318; PS04/334; PS04/335; PS04/337; PS04/340; PS04/346; PS04/348; PS04/350; PS04/351; PS04/357; PS04/368; PS04/370; PS04/380; PS04/382; PS04/389; PS04/414; PS04/423; PS04/429; PS04/433; PS04/434; PS04/442; PS04/447; PS04/449; PS04/472; PS04/477; PS04/481; PS04/484; PS04/495; PS04/500; PS04/508; PS04/509; PS06/301; PS06/302; PS06/303; PS06/304; PS06/306; PS06 SIBEX; PS08; PS08/379; PS08/380; PS08/381; PS08/382; PS08/384; PS08/385; PS08/386; PS08/387; PS08/439; PS08/442; PS08/444; PS08/449; PS08/450; PS08/452; PS10; PS10/778; PS1010-1; PS1011-1; PS1012-1; PS1013-1; PS1014-1; PS1016-1; PS1017-1; PS1018-1; PS1019-1; PS1194-1; PS1196-1; PS1197-1; PS1197-2; PS1198-1; PS1199-1; PS1199-2; PS12; PS12/344; PS12/348; PS12/350; PS12/372; PS1200-2; PS1200-4; PS1201-1; PS1202-2; PS1203-1; PS1204-1; PS1205-1; PS1206-1; PS1207-2; PS1208-1; PS1209-1; PS1210-1; PS1210-2; PS1211-2; PS1212-1; PS1213-1; PS1214-1; PS1215-2; PS1216-1; PS1217-1; PS1219-1; PS1220-3; PS1222-1; PS1223-1; PS1275-1; PS1276-1; PS1277-1; PS1278-1; PS1279-1; PS1396-1; PS1397-1; PS1397-3; PS1398-1; PS1398-2; PS1399-1; PS1400-1; PS1400-4; PS1401-1; PS1401-2; PS1402-2; PS1403-1; PS1418-1; PS1420-1; PS1420-2; PS1422-1; PS1423-1; PS1423-2; PS1424-1; PS1424-2; PS1498-1; PS1498-2; PS1609-2; PS1609-3; PS1611-1; PS1611-3; PS1612-1; PS1612-2; PS1621-2; SL; Weddell Sea
    Type: Dataset
    Format: application/zip, 2 datasets
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 8
    facet.materialart.
    Unknown
    Geochemical investigations of sediment profiles in the Norwegian-Greenland Sea (2011)
    PANGAEA
    In:  Supplement to: Voelker, Antje H L (1999): Zur Deutung der Dansgaard-Oeschger Ereignisse in ultra-hochauflösenden Sedimentprofilen aus dem Europäischen Nordmeer (Dansgaard-Oeschger events in ultra-high resolution sediment records from the Nordic Seas). Berichte-Reports, Institut für Geowissenschaften, Universität Kiel, 9, 278 pp, https://doi.org/10.2312/reports-ifg.1999.9
    Details
    Publication Date: 2024-07-01
    Description: High-, i.e. 15-140-yr-resolution climate records from sediment cores 23071, 23074, and PS2644 from the Nordic Seas were used to recon:;truct changes in the surface and deep water circulation during marine isotope stages 1-5.1, i.e. the last 82 000 yr. From this the causal links between the paleoceanographic signals and the Dansgaard-Oeschger events 1-21 revealed in 0180-ice-core records from Greenland were determined. The stratigraphy of the cores is based on the planktic 0180 curves, the minima of which were directly correlated with the GISP2-0180 record, numerous AMS 14C ages, and some ash layers. The planktic d18O and dl3C curves of all three cores reveal numerous meltwater events, the most pronounced of which were assigned to the Heinrich events 1-6. The meltwater events, among other things also accompanied by cold sea surface temperatures and high IRD concentration, correlate with the stadial phases of the Dansgaard-Oeschger cycles and in the western Iceland Sea also to colder periods or abrupt drops in 0180 within a few longer interstadials. Besides being more numerous, the meltwater events also show isotope values lighter in the Iceland Sea than in the central Norwegian Sea, especially if compared to core 23071. This implies a continuous inflow of relative warm Atlantic water into the Norwegian Sea and a cyclonic circulation regime.
    Keywords: Arctic Ocean; ARK-X/2; AWI_Paleo; Denmark Strait; Giant box corer; GIK/IfG; GIK23071-2; GIK23071-3; GIK23074-1; GIK23074-3; GIK23351-1; GIK23351-4; GIK23354-4; GIK23354-6; GKG; GLAMAP; Global Environmental Change: The Northern North Atlantic; Gravity corer (Kiel type); Institute for Geosciences, Christian Albrechts University, Kiel; KAL; Kasten corer; M2/2; M7/5; Meteor (1986); Norwegian-Greenland Sea; Norwegian Sea; Paleoenvironmental Reconstructions from Marine Sediments @ AWI; Polarstern; PS2613-1; PS2613-6; PS2616-7; PS2644-2; PS2644-5; PS2645-2; PS2645-5; PS2646-2; PS2646-5; PS2647-2; PS2647-5; PS31; PS31/113; PS31/116; PS31/160; PS31/160-5; PS31/161; PS31/162; PS31/163; Quaternary Environment of the Eurasian North; QUEEN; SFB313; SL
    Type: Dataset
    Format: application/zip, 48 datasets
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 9
    facet.materialart.
    Unknown
    Results of an isotope tracer experiment with arctic deep-sea nematodes (2011)
    PANGAEA
    In:  Supplement to: Guilini, Katja; van Oevelen, Dick; Soetaert, Karline; Middelburg, Jack J; Vanreusel, Ann (2010): Nutritional importance of benthic bacteria for deep-sea nematodes from the Arctic ice margin: Results of an isotope tracer experiment. Limnology and Oceanography, 55, 1977-1989, https://doi.org/10.4319/lo.2010.55.5.1977
    Details
    Publication Date: 2024-07-01
    Description: A stable isotope (13C)-labeling experiment was performed to quantify the importance of bacterial carbon as a food source for an Arctic deep-sea nematode community. Bacterial functional groups were isotopically enriched with 13C-glucose, 13C-acetate, 13C- bicarbonate, and 13C-amino acids injected into sediments collected from 1280 m depth at 79uN, 6uE, west of Svalbard. Incorporation of the 13C label into bacterial phospholipid-derived fatty acids (PLFAs) and nematodes in the top 5 cm of the sediment was monitored over a 7-d period. The 13C dynamics of nematodes was fitted with a simple isotope turnover model to derive the importance of the different bacterial functional groups as carbon sources for the nematodes. The different substrates clearly labeled different bacterial groups as evidenced by differential labeling of the PLFA patterns. The deep-sea nematode community incorporated a very limited amount of the label, and the isotope turnover model showed that the dynamics of the isotope transfer could not be attributed to bacterivory. The low enrichment of nematodes suggests a limited passive uptake of injected 13C-labeled substrates. The lack of accumulation suggests that the injected 13C-labeled dissolved organic carbon compounds are not important as carbon sources for deep-sea nematodes. Since earlier studies with isotopically enriched algae also found limited uptake by nematodes, the food sources of deep-sea nematodes remain unclear.
    Keywords: ARK-XXII/1c; hermes; HERMES; hermione; HERMIONE; Hotspot Ecosystem Research and Mans Impact On European Seas; Hotspot Ecosystem Research on the Margins of European Seas; MUC; MultiCorer; North Greenland Sea; Polarstern; PS70; PS70/188-1; PS70/190-1; PS70/192-1
    Type: Dataset
    Format: application/zip, 4 datasets
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 10
    facet.materialart.
    Unknown
    A new genus Abyssogena from deep-water vents and seeps (2010)
    PANGAEA
    In:  Supplement to: Krylova, Elena M; Sahling, Heiko; Janssen, Ronald (2010): Abyssogena: a new genus of the family Vesicomyidae (Bivalvia) from deep-water vents and seeps. Journal of Molluscan Studies, 76(2), 107-132, https://doi.org/10.1093/mollus/eyp052
    Details
    Publication Date: 2024-07-01
    Description: A new genus Abyssogena is established for A. phaseoliformis (Métivier, Okutani & Ohta, 1986) and A. kaikoi (Okutani & Métivier, 1986), which were previously assigned to the genus Calyptogena Dall, 1891, and also for two new species, A. southwardae and A. novacula. The most characteristic features of Abyssogena are an elongate shell up to about 280 mm in length; a pallial line starting from the ventral margin of the anterior adductor scar; secondary pallial attachment scars developed dorsal to the pallial line; radially arranged hinge teeth with a reduced anterior cardinal tooth in the right valve; and presence of an inner ctenidial demibranch only. Abyssogena occurs in deep water from 2,985 to 6,400 m and is distributed in the Pacific and Atlantic Oceans at cold seeps along continental margins and hydrothermal vents at mid-oceanic ridges. Some species have a remarkably wide geographic distribution; A. southwardae is present throughout the Atlantic and A. phaseoliformis is present in Japan, Kuril-Kamchatka, as well as Aleutian Trenches. No fossils of Abyssogena are known.
    Keywords: 11; 48-1; 49-1; 63-1; Advance_II_11; Akademik Mstislav Keldysh; Alaska, USA; ALVIN; AMK41; AMK41-3869-1; Anyas Garden, Logatchev area; AT_3133; Barbados; BARESNAUT_Pl_94; Center for Marine Environmental Sciences; Giant box corer; GKG; HYDROMAR1; Japan Trench; KAIKO_85_KR98-07; KAIKO_KD-14; KAIKO_KD-18; KAIKO_KD-5; KD-14; KD-18; KD-5; KODIAK-VENT; Logachev Hydrothermal Field, diffusive field; M60/3; M60/3-66-ROV; M66/1; M66/1_395; MARUM; Meteor (1986); Mid-Atlantic Ridge at 10-15°N; MIR; MIR deep-sea manned submersible; Nadir_PL-18; NAUT; Nautile; offshore Virginia; off the Canary Archipelago, Henry Seamount; Remote operated vehicle; ROV; SO110/2; SO110/2_48-1; SO110/2_49-1; SO110/2_63-1; SO97/1; SO97/1_66; Sonne; SO-RO; Submersible Alvin; Television-Grab; Tenryu Submarine Canyon; TVG
    Type: Dataset
    Format: application/zip, 4 datasets
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...