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  • Articles
  • Data  (4)
  • Center for Marine Environmental Sciences; MARUM  (3)
  • 053-2; 057-1; 087-1; 162-983; 165-1002; 172-1060; 175-1078C; 175-1084; 293; 311; 3664N/S; 63F/NL; 90b; 94-609; Agadir Canyon; ALIENOR; ALTITUDE; AMADEUS; Amazon Fan; AMOCINT, IMAGES XVII; Angola Basin; ARK-X/2; Atlantic; Atlantic Ocean; Atlantic sediment cores; Azores; BC; Benguela Current, South Atlantic Ocean; Blake-Bahama Outer Ridge, North Atlantic Ocean; Box corer; CALYPSO; Calypso Corer; Calypso square corer; Calypso Square Core System; CASQ; CASQS; Cayman Rise, Caribbean Sea; CD159; CD159-10; CD159-17; CEPAG; CH22KW31; CH69-K09; Charles Darwin; CHO288-54; Comment; COMPCORE; Composite Core; consistent dating; Continental Slope Northeast Brazil; Core; CORE; Corner Rise; DAPC2; Denmark Strait; De Soto Canyon; DRILL; Drilling/drill rig; East Atlantic; ENAM9321; ENAM93-21; Event label; EW9209-1JPC; Faeroes Bank; Falkland Plateau, Southern Falkland Plateau (same site as GC526); Faroe Islands margin; Florida Strait; French Guiana; GC; GC528 CORE_NO 528; GeoB1023-5; GeoB1515-1; GeoB16202-2; GeoB16206-1; GeoB16224-1; GeoB1711; GeoB1711-4; GeoB1720-2; GeoB3202-1; GeoB3910-2; GeoB4240-2; GeoB5546-2; GeoB6201-5; GeoB7920-2; GeoB9508-5; GeoB9526-5; GEOFAR; GEOSCIENCES, MARMARCORE; GGC; GGC5; Giant gravity corer; GIK12392-1; GIK15669-1; GIK23415-9; GL1090; GL-1090; Glomar Challenger; Gravity corer; Gravity corer (Kiel type); GS07-150-17/1GC-A; Iceland; IMAGES I; IMAGES IX - PAGE; IMAGES V; IMAGES XV - Pachiderme; James Clark Ross; Joides Resolution; JOPSII-8; JR20110128; JR244; JR244-GC528; KAL; Kasten corer; KF13; KF16; KL; KM31; KN_USA; KN159-5; KN166-2; Knorr; KNR140; KNR140-2-51GGC; KNR140-51GGC; KNR159-5; KNR159-5-36GGC; KNR159-5-42JPC; KNR166-2; KNR166-2-26; KNR166-2-26JPC; KNR166-2-29; KNR166-2-29JPC; KNR166-2-31; KNR166-2-31JPC; KNR166-2-73; KNR166-2-73GGC; KNR197-10; KNR197-10-GGC17; KNR31GPC5; last 40 ky; LATITUDE; Leg162; Leg165; Leg172; Leg175; Leg94; Le Noroit; Le Suroît; LONGITUDE; M12392-1; M16/2; M17/2; M20/2; M25; M34/4; M35/1; M35003-4; M37/1; M39/1; M39/1_08-3; M39008-3; M42/4b; M46/2; M53; M53_169; M53/1; M6/6; M65/1; Marge Ibérique; Maria S. Merian; Marion Dufresne (1995); MD01-2461; MD022575; MD02-2575; MD02-2588; MD02-2588Q; MD02-2592; MD02-2594; MD03-2697; MD03-2698; MD03-2705; MD03-2707; MD04-2805CQ; MD04-2805Q; MD04-2845; MD07-3076; MD07-3076Q; MD08-3167; MD08-3180; MD08-3227G; MD09-3246; MD09-3256; MD09-3256Q; MD101; MD114; MD123; MD127; MD128; MD134; MD140; MD141; MD159; MD16-3511; MD16-3511Q; MD168; MD173; MD952002; MD95-2002; MD952006; MD95-2006; MD952010; MD95-2010; MD952014; MD95-2014; MD952037; MD95-2037; MD952039; MD95-2039; MD952040; MD95-2040; MD952041; MD95-2041; MD952042; MD95-2042; MD99-2281; MD99-2284; MD99-2331; MD99-2334; Meriadzec; Meteor (1964); Meteor (1986); Method comment; MSM20/3; N. Shetland channel; NA87-22; Namibia continental slope; Newfoundland margin; North Atlantic; North Atlantic/FLANK; North East Atlantic; Northeast Brasilian Margin; Norwegian Sea; OCE205-103GGC; OCE205-2-100GGC; OCE205-2-100GGGC; OCE205-2-103GGC; OCE326-GGC5; off Rio Paraiba do Sul; off West Africa; PALEOCINAT; PALEOCINAT II; PC; Persistent Identifier; PICABIA; Piston corer; Piston corer (BGR type); Polarstern; Porto Seamount; PRIVILEGE; PS2644-5; PS31; PS31/160-5; RAPiD-10-1P; RAPiD-17-5P; Reference/source; RETRO-2; REYKJANES-RÜCKEN; S94-2-KS04; SL; SO82; SO82_5-2; Sonne; South Atlantic; South Atlantic Ocean; Southern Ocean; South of Iceland; SU81-18; SU90-08; SU90-24; SU92; SU92-03; SWAF; Tagus-Sado canyon system; TNO57-21; Uniform resource locator/link to graphic; V29; V29-202; Vema; Victor Hensen; Vigo; Voring Plateau; western South Atlantic  (1)
  • 2015-2019  (4)
  • 1985-1989
Collection
  • Articles
  • Data  (4)
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Keywords
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Years
Year
  • 1
    facet.materialart.
    Unknown
    Stable oxygen isotopes and Mg/Ca in planktic foraminifera and water column data from the Western Pacific Warm Pool (2018)
    PANGAEA
    In:  Supplement to: Hollstein, Martina; Mohtadi, Mahyar; Rosenthal, Yair; Moffa-Sanchez, Paola; Oppo, Delia W; Martínez Méndez, Gema; Steinke, Stephan; Hebbeln, Dierk (2017): Stable Oxygen Isotopes and Mg/Ca in Planktic Foraminifera From Modern Surface Sediments of the Western Pacific Warm Pool: Implications for Thermocline Reconstructions. Paleoceanography, 32(11), 1174-1194, https://doi.org/10.1002/2017PA003122
    Details
    Publication Date: 2023-03-03
    Description: Mg/Ca and stable oxygen isotope compositions (d18O) of planktic foraminifera tests are commonly used as proxies to reconstruct past ocean conditions including variations in the vertical water column structure. Accurate proxy calibrations require thorough regional studies, since parameters such as calcification depth and temperature of planktic foraminifera depend on local environmental conditions. Here we present radiocarbon-dated, modern surface sediment samples and water column data (temperature, salinity, and seawater d18O) from the Western Pacific Warm Pool. Seawater d18O (d18OSW) and salinity are used to calculate individual regressions for western Pacific surface and thermocline waters (d18OSW = 0.37 × S-12.4 and d18OSW = 0.33 × S-11.0). We combine shell d18O and Mg/Ca with water column data to estimate calcification depths of several planktic foraminifera and establish regional Mg/Ca-temperature calibrations. Globigerinoides ruber, Globigerinoides elongatus, and Globigerinoides sacculifer reflect mixed layer conditions. Pulleniatina obliquiloculata and Neogloboquadrina dutertrei and Globorotalia tumida preserve upper and lower thermocline conditions, respectively. Our multispecies Mg/Ca-temperature calibration (Mg/Ca = 0.26exp0.097*T) matches published regressions. Assuming the same temperature sensitivity in all species, we propose species-specific calibrations that can be used to reconstruct upper water column temperatures. The Mg/Ca temperature dependencies of G. ruber, G. elongatus, and G. tumida are similar to published equations. However, our data imply that calcification temperatures of G. sacculifer, P. obliquiloculata, and N. dutertrei are exceptionally warm in the western tropical Pacific and thus underestimated by previously published calibrations. Regional Mg/Ca-temperature relations are best described by Mg/Ca = 0.24exp0.097*T for G. sacculifer and by Mg/Ca = 0.21exp0.097*T for P. obliquiloculata and N. dutertrei.
    Keywords: Center for Marine Environmental Sciences; MARUM
    Type: Dataset
    Format: application/zip, 3 datasets
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  • 2
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    Unknown
    Planktic foraminiferal Mg/Ca, Nd/Ca and oxygen isotopes and XRF core scanner data (Ti/Ca) of sediment core GeoB17419-1 (2019)
    PANGAEA
    In:  Supplement to: Hollstein, Martina; Mohtadi, Mahyar; Rosenthal, Yair; Prange, Matthias; Oppo, Delia W; Martínez Méndez, Gema; Tachikawa, Kazuyo; Moffa-Sanchez, Paola; Steinke, Stephan; Hebbeln, Dierk (2018): Variations in Western Pacific Warm Pool surface and thermocline conditions over the past 110,000 years: Forcing mechanisms and implications for the glacial Walker circulation. Quaternary Science Reviews, 201, 429-445, https://doi.org/10.1016/j.quascirev.2018.10.030
    Details
    Publication Date: 2023-03-03
    Description: Surface and thermocline conditions of the Western Pacific Warm Pool (WPWP) reflect changes in regional and basin scale ocean and atmosphere circulations and in turn may affect climate globally. Previous studies suggest that a range of factors influences the WPWP on different timescales, however the precise forcings and mechanisms are unclear. Combining surface and thermocline records from sediment cores offshore Papua New Guinea we explore the influence of local and remote processes on the WPWP in response to astronomical forcing and changing glacial-interglacial boundary conditions over the past 110 kyr. We find that thermocline temperatures change with variations in Earth's obliquity with higher temperatures coinciding with high obliquity, which is attributed to variations in subduction and advection of the South Pacific Tropical Water. In contrast, rainfall variations associated with meridional migrations of the Intertropical Convergence Zone are primarily driven by changes in insolation due to precession. Records of bulk sedimentary Ti/Ca and foraminiferal Nd/Ca indicate an additional influence of obliquity, which, however, cannot unambiguously be related to changes in precipitation. Finally, our results suggest a thermocline deepening during the Last Glacial Maximum (LGM). A compilation of available proxy records illustrates a dipole-like pattern of LGM thermocline depth anomalies with a shoaling (deepening) in the northern (southern) WPWP. A comparison of the proxy compilation with an ensemble of Paleoclimate Model Intercomparison Project (PMIP) climate model simulations reveals that the spatial pattern of LGM thermocline depth anomalies is mainly attributable to a contraction of the Pacific Walker circulation on its western side.
    Keywords: Center for Marine Environmental Sciences; MARUM
    Type: Dataset
    Format: application/zip, 4 datasets
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  • 3
    facet.materialart.
    Unknown
    Planktic foraminiferal Mg/Ca and oxygen isotope data of sediment core GeoB17426-3 from the Western Pacific Warm Pool (2019)
    PANGAEA
    Details
    Publication Date: 2023-11-21
    Keywords: Center for Marine Environmental Sciences; MARUM
    Type: Dataset
    Format: application/zip, 2 datasets
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  • 4
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    Unknown
    A summary of consistently dated Atlantic sediment cores over the last 40 thousand years (2019)
    PANGAEA
    Details
    Publication Date: 2024-05-27
    Description: Rapid changes in ocean circulation and climate have been observed in marine-sediment and ice cores over the last glacial period and deglaciation, highlighting the non-linear character of the climate system and underlining the possibility of rapid climate shifts in response to anthropogenic greenhouse gas forcing. To date, these rapid changes in climate and ocean circulation are still not fully explained. One obstacle hindering progress in our understanding of the interactions between past ocean circulation and climate changes is the difficulty of accurately dating marine cores. Here, we present a set of 92 marine sediment cores from the Atlantic Ocean for which we have established age-depth models that are consistent with the Greenland GICC05 ice core chronology, and computed the associated dating uncertainties, using a new deposition modeling technique. This is the first set of consistently dated marine sediment cores enabling paleoclimate scientists to evaluate leads/lags between circulation and climate changes over vast regions of the Atlantic Ocean. Moreover, this data set is of direct use in paleoclimate modeling studies.
    Keywords: 053-2; 057-1; 087-1; 162-983; 165-1002; 172-1060; 175-1078C; 175-1084; 293; 311; 3664N/S; 63F/NL; 90b; 94-609; Agadir Canyon; ALIENOR; ALTITUDE; AMADEUS; Amazon Fan; AMOCINT, IMAGES XVII; Angola Basin; ARK-X/2; Atlantic; Atlantic Ocean; Atlantic sediment cores; Azores; BC; Benguela Current, South Atlantic Ocean; Blake-Bahama Outer Ridge, North Atlantic Ocean; Box corer; CALYPSO; Calypso Corer; Calypso square corer; Calypso Square Core System; CASQ; CASQS; Cayman Rise, Caribbean Sea; CD159; CD159-10; CD159-17; CEPAG; CH22KW31; CH69-K09; Charles Darwin; CHO288-54; Comment; COMPCORE; Composite Core; consistent dating; Continental Slope Northeast Brazil; Core; CORE; Corner Rise; DAPC2; Denmark Strait; De Soto Canyon; DRILL; Drilling/drill rig; East Atlantic; ENAM9321; ENAM93-21; Event label; EW9209-1JPC; Faeroes Bank; Falkland Plateau, Southern Falkland Plateau (same site as GC526); Faroe Islands margin; Florida Strait; French Guiana; GC; GC528 CORE_NO 528; GeoB1023-5; GeoB1515-1; GeoB16202-2; GeoB16206-1; GeoB16224-1; GeoB1711; GeoB1711-4; GeoB1720-2; GeoB3202-1; GeoB3910-2; GeoB4240-2; GeoB5546-2; GeoB6201-5; GeoB7920-2; GeoB9508-5; GeoB9526-5; GEOFAR; GEOSCIENCES, MARMARCORE; GGC; GGC5; Giant gravity corer; GIK12392-1; GIK15669-1; GIK23415-9; GL1090; GL-1090; Glomar Challenger; Gravity corer; Gravity corer (Kiel type); GS07-150-17/1GC-A; Iceland; IMAGES I; IMAGES IX - PAGE; IMAGES V; IMAGES XV - Pachiderme; James Clark Ross; Joides Resolution; JOPSII-8; JR20110128; JR244; JR244-GC528; KAL; Kasten corer; KF13; KF16; KL; KM31; KN_USA; KN159-5; KN166-2; Knorr; KNR140; KNR140-2-51GGC; KNR140-51GGC; KNR159-5; KNR159-5-36GGC; KNR159-5-42JPC; KNR166-2; KNR166-2-26; KNR166-2-26JPC; KNR166-2-29; KNR166-2-29JPC; KNR166-2-31; KNR166-2-31JPC; KNR166-2-73; KNR166-2-73GGC; KNR197-10; KNR197-10-GGC17; KNR31GPC5; last 40 ky; LATITUDE; Leg162; Leg165; Leg172; Leg175; Leg94; Le Noroit; Le Suroît; LONGITUDE; M12392-1; M16/2; M17/2; M20/2; M25; M34/4; M35/1; M35003-4; M37/1; M39/1; M39/1_08-3; M39008-3; M42/4b; M46/2; M53; M53_169; M53/1; M6/6; M65/1; Marge Ibérique; Maria S. Merian; Marion Dufresne (1995); MD01-2461; MD022575; MD02-2575; MD02-2588; MD02-2588Q; MD02-2592; MD02-2594; MD03-2697; MD03-2698; MD03-2705; MD03-2707; MD04-2805CQ; MD04-2805Q; MD04-2845; MD07-3076; MD07-3076Q; MD08-3167; MD08-3180; MD08-3227G; MD09-3246; MD09-3256; MD09-3256Q; MD101; MD114; MD123; MD127; MD128; MD134; MD140; MD141; MD159; MD16-3511; MD16-3511Q; MD168; MD173; MD952002; MD95-2002; MD952006; MD95-2006; MD952010; MD95-2010; MD952014; MD95-2014; MD952037; MD95-2037; MD952039; MD95-2039; MD952040; MD95-2040; MD952041; MD95-2041; MD952042; MD95-2042; MD99-2281; MD99-2284; MD99-2331; MD99-2334; Meriadzec; Meteor (1964); Meteor (1986); Method comment; MSM20/3; N. Shetland channel; NA87-22; Namibia continental slope; Newfoundland margin; North Atlantic; North Atlantic/FLANK; North East Atlantic; Northeast Brasilian Margin; Norwegian Sea; OCE205-103GGC; OCE205-2-100GGC; OCE205-2-100GGGC; OCE205-2-103GGC; OCE326-GGC5; off Rio Paraiba do Sul; off West Africa; PALEOCINAT; PALEOCINAT II; PC; Persistent Identifier; PICABIA; Piston corer; Piston corer (BGR type); Polarstern; Porto Seamount; PRIVILEGE; PS2644-5; PS31; PS31/160-5; RAPiD-10-1P; RAPiD-17-5P; Reference/source; RETRO-2; REYKJANES-RÜCKEN; S94-2-KS04; SL; SO82; SO82_5-2; Sonne; South Atlantic; South Atlantic Ocean; Southern Ocean; South of Iceland; SU81-18; SU90-08; SU90-24; SU92; SU92-03; SWAF; Tagus-Sado canyon system; TNO57-21; Uniform resource locator/link to graphic; V29; V29-202; Vema; Victor Hensen; Vigo; Voring Plateau; western South Atlantic
    Type: Dataset
    Format: text/tab-separated-values, 563 data points
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