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  • 2015-2019  (7)
  • 2017  (7)
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  • 2015-2019  (7)
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  • 1
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    The southwest Indian Ocean Bathymetric Compilation (swIOBC) (2017)
    PANGAEA
    In:  Supplement to: Dorschel, Boris; Jensen, Laura; Arndt, Jan Erik; Brummer, Geert-Jan A; de Haas, Henk; Fielies, Anthony; Franke, Dieter; Jokat, Wilfried; Krocker, Ralf; Kroon, Dick; Pätzold, Jürgen; Schneider, Ralph R; Spieß, Volkhard; Stollhofen, Harald; Uenzelmann-Neben, Gabriele; Watkeys, Mike; Wiles, Errol A (2018): The Southwest Indian Ocean Bathymetric Compilation (swIOBC). Geochemistry, Geophysics, Geosystems, https://doi.org/10.1002/2017GC007274
    Details
    Publication Date: 2023-03-16
    Description: We present a comprehensive regional bathymetric data compilation for the southwest Indian Ocean (swIOBC) covering the area from 4°S to 40°S and 20°E to 45°E with a spatial resolution of 250 m. For this, we used multibeam and singlebeam data as well as data from global bathymetric data compilations. We generated the swIOBC using an iterative approach of manual data cleaning and gridding, accounting for different data qualities and seamless integration of all different kinds of data. In comparison to existing bathymetric charts of this region the new swIOBC benefits from nearly four times as many data-constrained grid cells and a higher resolution, and thus reveals formerly unseen seabed features. In the central Mozambique Basin a surprising variety of landscapes were discovered. They document a deep reaching influence of the Mozambique Current eddies. Details of the N-S trending Zambezi Channel could be imaged in the central Mozambique Basin.
    Keywords: AWI_GeoPhy; File content; File format; File name; File size; Indian Ocean; Marine Geophysics @ AWI; Southwestern_Indian_Ocean; Uniform resource locator/link to file
    Type: Dataset
    Format: text/tab-separated-values, 25 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 2
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    14C and age models for cores M772-052 and M772-029; diatom assemblages and biogenic opal and organic carbon data (2017)
    PANGAEA
    In:  Supplement to: Doering, Kristin; Erdem, Zeynep; Ehlert, Claudia; Fleury, Sophie; Frank, Martin; Schneider, Ralph R (2016): Changes in diatom productivity and upwelling intensity off Peru since the Last Glacial Maximum: Response to basin-scale atmospheric and oceanic forcing. Paleoceanography, 31(10), 1453-1473, https://doi.org/10.1002/2016PA002936
    Details
    Publication Date: 2023-10-28
    Description: New records of stable silicon isotope signatures (?30Si) together with concentrations of biogenic opal and organic carbon from the central (9°S) and northern (5°S) Peruvian margin reveal changes in diatom productivity and nutrient utilization during the past 20,000 years. The findings are based on a new approach using the difference between the ?30Si signatures of small (11-32 ?m) and large (〉150 ?m) diatom fractions (?30Si ) in combination with the variance in diatom assemblages for reconstruction Coscino-bSi of past upwelling intensity. Combination of our records with two previously published records from the southern upwelling area off Peru (12-15°S) shows a general decoupling of the environmental conditions at the central and southern shelf mainly caused by a northward shift of the main upwelling cell from its modern position (12-15°S) toward 9°S during Termination 1. At this time only moderate upwelling intensity and productivity levels prevailed between 9°S and 12°S interpreted by a more northerly position of Southern Westerly Winds and the South Pacific Subtropical High. Furthermore, a marked decrease in productivity at 12-15°S during Heinrich Stadial 1 coincided with enhanced biogenic opal production in the Eastern Equatorial Pacific, which was induced by a southward shift of the Intertropical Convergence Zone and enhanced northeasterly trade winds. Modern conditions were only established at the onset of the Holocene. Past changes in preformed ?30Si signatures of subsurface waters reaching the Peruvian Upwelling System did not significantly affect the preserved ?30Si signatures
    Keywords: Climate - Biogeochemistry Interactions in the Tropical Ocean; SFB754
    Type: Dataset
    Format: application/zip, 7 datasets
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 3
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    SST reconstruction and TOC concentration of Baltic Sea sediment cores (2017)
    PANGAEA
    In:  Supplement to: Warden, Lisa; Moros, Matthias; Neumann, Thomas; Shennan, Ian; Timpson, Adrian; Manning, Katie; Sollai, Martina; Wacker, Lukas; Perner, Kerstin; Häusler, Katharina; Leipe, Thomas; Zillén, Lovisa; Kotilainen, Aarno T; Jansen, Eystein; Schneider, Ralph R; Oeberst, R; Arz, Helge Wolfgang; Sinninghe Damsté, Jaap S (2017): Climate induced human demographic and cultural change in northern Europe during the mid-Holocene. Scientific Reports, 7(1), https://doi.org/10.1038/s41598-017-14353-5
    Details
    Publication Date: 2023-07-26
    Description: The transition from hunter-gatherer-fisher groups to agrarian societies is arguably the most significant change in human prehistory. In the European plain there is evidence for fully developed agrarian societies by 7,500 cal. yr BP, yet a well-established agrarian society does not appear in the north until 6,000 cal. yr BP for unknown reasons. Here we show a sudden increase in summer temperature at 6,000 cal. yr BP in northern Europe using a well-dated, high resolution record of sea surface temperature (SST) from the Baltic Sea. This temperature rise resulted in hypoxic conditions across the entire Baltic sea as revealed by multiple sedimentary records and supported by marine ecosystem modeling. Comparison with summed probability distributions of radiocarbon dates from archaeological sites indicate that this temperature rise coincided with both the introduction of farming, and a dramatic population increase. The evidence supports the hypothesis that the boundary of farming rapidly extended north at 6,000 cal. yr BP because terrestrial conditions in a previously marginal region improved.
    Keywords: NIOZ_UU; NIOZ Royal Netherlands Institute for Sea Research, and Utrecht University
    Type: Dataset
    Format: application/zip, 2 datasets
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 4
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    TOC content and LOI of sediment core POS435_164-1 (2017)
    PANGAEA
    Details
    Publication Date: 2023-07-26
    Keywords: Carbon, organic, total; DEPTH, sediment/rock; GC; Gotland Basin; Gravity corer; Loss on ignition; NIOZ_UU; NIOZ Royal Netherlands Institute for Sea Research, and Utrecht University; POS435; POS435_164-1; Poseidon
    Type: Dataset
    Format: text/tab-separated-values, 670 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 5
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    TOC content, LOI and SST reconstruction of sediment core PAP_303600 (2017)
    PANGAEA
    Details
    Publication Date: 2023-07-26
    Keywords: AGE; Carbon, organic, total; DEPTH, sediment/rock; GC; Gotland Basin; Gravity corer; Loss on ignition; NIOZ_UU; NIOZ Royal Netherlands Institute for Sea Research, and Utrecht University; PAP_303600; Sea surface temperature, annual mean
    Type: Dataset
    Format: text/tab-separated-values, 378 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 6
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    CLAM age model and pollen profile of sediment core GeoB1023-5 (2017)
    PANGAEA
    Details
    Publication Date: 2024-05-27
    Keywords: Abrupt Climate Changes and Environmental Responses; Acacia/Parkia; Accumulation model; ACER; Adenia; Afzelia; Alchornea; Amaranthaceae/Chenopodiaceae; Angola Basin; Antidesma-type; Artemisia; Asteraceae; Azadirachta; Balanites; Baphia-type; Barleria; Berlinia-type; Blepharis; Blighia-type; Borreria; Boscia-type; Boswellia; Brachystegia; Brassicaceae; Bridelia; Burkea; Butyrospermum; Cadaba; Calendar age; Calendar age, maximum/old; Calendar age, minimum/young; Canthium; Caryophyllaceae; Cassia-type; Celastraceae; Celtis; Centaurea; Cistaceae; Classical age-modeling approach, CLAM (Blaauw, 2010); Clausena; Cleome; Cnestis-type; Combretaceae/Melastomataceae; Commicarpus; Commiphora; Counting, palynology; Crassulaceae; Crateva; Crudia-type; Cryptospalum/Tamarix; Cyperaceae; Daniellia-type; DEPTH, sediment/rock; Diospyros; Dodonaea viscosa; Dracaena; Ephedra; Ericaceae; Gaertnera; Galium; GeoB1023-5; Gomphrena-type; Gravity corer (Kiel type); Grewia; Heliotropium; Hygrophila; Hymenocardia; Hyphaene; Hypoestes-type; Ilex mitis; Indigofera-type; Iodes; Ixora; Justicia/Monechma; Khaya; Lannea; Liliaceae; Lophira; M6/6; Macaranga-type; Maerua-type; Mallotus; Malvaceae; Manilkara; Martretia; Meliaceae; Melochia; Meteor (1986); Morinda; Mussaenda; Myrica; Myrtaceae; Nitraria; Nyctaginaceae; Ochna; Olea; Oleaceae; Orchidaceae; Parkinsonia; Pavetta; Peganum/Zygophyllum; Pelargonium; Phillyrea; Phyllanthus; Piliostigma; Pittosporum; Plantago; Plumbaginaceae; Poaceae; Podocarpus; Polycarpaea-type; Polygala-type; Polygonum; Polypodiales; Protea; Pterocarpus; Pterolobium; Pycnanthus; Raphia; Restionaceae; Rhamnaceae; Rhizophora; Rhus-type; Rothmannia; Sabicea; Salvadora persica; Sample ID; Sarcosperma; Sesbania-type; Sherbournia; SL; Solanum-type; Sterculia-type; Syzygium-type; Tapinanthus; Tetrorchidium; Tribulus; Trichilia; Trichodesma; Type of age model; Typha angustifolia-type; Uapaca; Zanthoxylum; Zygophyllum
    Type: Dataset
    Format: text/tab-separated-values, 14679 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 7
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    CLAM age model and microcharcoal of sediment core GeoB1023-5 (2017)
    PANGAEA
    Details
    Publication Date: 2024-05-27
    Keywords: Abrupt Climate Changes and Environmental Responses; Accumulation model; ACER; Angola Basin; Calendar age; Calendar age, maximum/old; Calendar age, minimum/young; Charcoal; Classical age-modeling approach, CLAM (Blaauw, 2010); DEPTH, sediment/rock; GeoB1023-5; Gravity corer (Kiel type); M6/6; Meteor (1986); Sample ID; SL; Type of age model; Unit
    Type: Dataset
    Format: text/tab-separated-values, 693 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
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