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  • GEOMAR Catalogue / E-Books  (1)
  • Data  (379)
  • PANGAEA  (379)
  • Kiel : GEOMAR, Helmholtz-Zentrum für Ozeanforschung  (1)
  • AGU
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  • GEOMAR Catalogue / E-Books  (1)
  • Data  (379)
  • OceanRep  (3)
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  • 1
    Online Resource
    Online Resource
    KIEL276 Time Series Data from Moored Current Meters Madeira Abyssal Plain 33°N, 22°W, 5285 m water depth March 1980 – April 2011 Background Information and Data Compilation (2013)
    Kiel : GEOMAR, Helmholtz-Zentrum für Ozeanforschung
    Details Availability
    Type of Medium: Online Resource
    Pages: graph. Darst.
    Edition: Online-Ausg. Online-Ressource
    Series Statement: GEOMAR Report N.S. 13
    URL: http://oceanrep.geomar.de/22632/
    URL: http://dx.doi.org/10.3289/GEOMAR_REP_NS_13_2013
    Language: English
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    GEOMAR CATALOGUE
    Link to Library Catalog
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  • 2
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    Hydrographic measurements at Kiel276 from 1980 to 2011 (CTD data corresponing to moorings) (2017)
    PANGAEA
    Details
    Publication Date: 2024-07-19
    Description: This dataset comprises the hydrographic measurements at KIEL276 - Time Series Data from Moored Current Meters in the Madeira Abyssal Plain at 33°N, 22°W, 5285 m water depth from March 1980 – April 2011.
    Keywords: JGOFS; Joint Global Ocean Flux Study; SFB133; Warmwassersphäre des Atlantiks
    Type: dataset publication series
    Format: application/zip, 29 datasets
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    DATA PANGAEA
  • 3
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    Physical oceanography during the cruise SO269 in South China Sea in August/September 2019 (2021)
    PANGAEA
    Details
    Publication Date: 2024-07-19
    Description: This dataset provides 131 CTD profiles measured on board of the German R/V Sonne (cruise SO269) in the northern South China Sea, under the project SOCLIS – South China Sea Natural Laboratory under Climatic and Anthropogenic Stress, in August and September 2019. The 131 profiles of temperature, salinity, dissolved oxygen, fluorescence, turbidity, surface irradiance (SPAR) and Photosynthetically active radiation (PAR), and sound velocity were measured using a CTD Sea-Bird SBE 911 plus, together with oxygen sensor (SBE 43), PAR sensor (Biospherical, QCP-2350 + QSR-2200), and a fluorometer (WET Labs ECO-FLNTU(RT)D). Additionally, oxygen saturation, potential temperature and sigma-theta (with reference to the surface) were calculated. The 131 CTD profiles are distributed by 81 stations and aim to study the impact of a growing anthropogenic pressure around the Pearl River Estuary into the northern shelf of the South China Sea towards the deep sea. The dataset was used to study the presence and spatial distribution of natural and synthetic estrogenic compounds and pharmaceutical and personal care products (PPCPs) in the Pearl River Estuary and northern shelf of the South China Sea.
    Keywords: physical oceanography; SOCLIS; South China Sea; South China Sea Natural Laboratory under Climatic and Anthropogenic Stress
    Type: dataset publication series
    Format: application/zip, 131 datasets
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    DATA PANGAEA
  • 4
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    Physical oceanography (p-CTD) during the cruise SO269 in South China Sea in August/September 2019 (2021)
    PANGAEA
    Details
    Publication Date: 2024-07-19
    Description: This dataset provides 37 CTD profiles measured on board of the German R/V Sonne (cruise SO269) in the northern South China Sea, under the project SOCLIS – South China Sea Natural Laboratory under Climatic and Anthropogenic Stress, in August and September 2019. The 37 profiles of temperature, salinity, dissolved oxygen, fluorescence, turbidity, surface irradiance (SPAR) and Photosynthetically active radiation (PAR), and sound velocity were measured using a CTD Sea-Bird SBE 911 plus, together with oxygen sensor (SBE 43), PAR sensor (Biospherical, QCP-2350 + QSR-2200), and a fluorometer (WET Labs ECO-FLNTU(RT)D). Additionally, dissolved oxygen, potential temperature and sigma-theta (with reference to the surface) were calculated. The 37 additional CTD files complement the physical oceanography dataset (Waniek et al., 2021).
    Keywords: physical oceanography; SOCLIS; South China Sea; South China Sea Natural Laboratory under Climatic and Anthropogenic Stress
    Type: dataset publication series
    Format: application/zip, 37 datasets
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    DATA PANGAEA
  • 5
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    Physical oceanography during the cruise Hai Yang Di Zhi Shi Hao in South China Sea in September 2018 (2021)
    PANGAEA
    Details
    Publication Date: 2024-07-19
    Description: This set provides 68 CTD profiles of temperature, conductivity, dissolved oxygen, fluorescence, turbidity, Surface Photosynthetically Active Radiation (SPAR) and sound velocity measured on board the Chinese R/V Hai Yang Di Zhi Shi Hao in September 2018, in the northern South China Sea, within the project Megacity's fingerprint in Chinese marginal seas: Investigation of pollutant fingerprints and dispersal. Additionally, oxygen saturation, salinity, potential temperature and potential density are also provided. The dataset was used to study the presence and spatial distribution of natural and synthetic estrogenic compounds and pharmaceutical and personal care products (PPCPs) in the Pearl River Estuary and northern shelf of the South China Sea.
    Keywords: Megacity's fingerprint in Chinese marginal seas: Investigation of pollutant fingerprints and dispersal; MEGAPOL; physical oceanography; South China Sea
    Type: dataset publication series
    Format: application/zip, 68 datasets
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    DATA PANGAEA
  • 6
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    Distribution of diatoms, coccolithophores and planktic foraminifera in the Arabian Sea (2004)
    PANGAEA
    In:  Supplement to: Schiebel, Ralf; Zeltner, A; Treppke, Ute F; Waniek, Joanna J; Bollmann, Jörg; Rixen, Tim; Hemleben, Christoph (2004): Distribution of diatoms, coccolithophores and planktic foraminifers along a trophic gradient during SW monsoon in the Arabian Sea. Marine Micropaleontology, 51(3-4), 345-371, https://doi.org/10.1016/j.marmicro.2004.02.001
    Details
    Publication Date: 2024-07-19
    Description: The distribution of diatoms, coccolithophores and planktic foraminifers mirrored the hydrographic and trophic conditions of the surface ocean (0-100 m) across the upwelling area off the Oman coast to the central Arabian Sea during May/June 1997 and July/August 1995. The number of diatoms was increased in waters with local temperature minimum and enhanced nutrient concentration (nitrate, phosphate, silicate) caused by upwelling. Vegetative cells of Chaetoceros dominated the diatom assemblage in the coastal upwelling area. Towards the more nutrient depleted and stratified surface waters to the southeast, the number of diatoms decreased, coccolithophore and planktic foraminiferal numbers increased, and floral and faunal composition changed. In particular, the transition between the eutrophic upwelling region off Oman and the oligotrophic central Arabian Sea was marked by moderate nutrient concentration, and high coccolithophore and foraminifer numbers. Florisphaera profunda, previously often referred as a 'lower-photic-zone-species', was frequent in water depths as shallow as 20 m, and at high nutrient concentration up to 14 µmol NO3/l and 1.2 µmol PO4/. To the oligotrophic southeast of the divergence, cell densities of coccolithophores declined and Umbellosphaera irregularis prevailed throughout the water column down to 100 m depth. In general, total coccolithophore numbers were limited by nutrient threshold concentration, with low numbers (〈10*10**3 cells/l) at high [NO3] and [PO4], and high numbers (〉70*10**3 cells/l) at low [NO3] and [PO4]. The components of the complex microplankton succession, diatoms, coccoliths and planktic foraminifers (and possibly others), should ideally be used as a combined paleoceanographic proxy. Consequently, models on plankton ecology should be resolved at least for the seasonality, to account for the bias of paleoceanographic transfer calculations.
    Keywords: 404; 414; 423; 430; 438; 440; 444; 446; 460; Arabian Sea; GeoTü; Indian Ocean; JGOFS-IN-2; M32/5; M32/5_MSN971; M32/5_MSN974; M32/5_MSN977; M32/5_MSN979; M32/5_MSN981; M32/5_MSN982; M32/5_MSN986; M32/5_MSN988; M32/5_MSN990; Meteor (1986); MSN; Multiple opening/closing net; Paleoceanography at Tübingen University; SO119; SO119_MSN1272; SO119_MSN1278; SO119_MSN1281; SO119_MSN1284; SO119_MSN1288; SO119_MSN1295; SO119_MSN1298; SO119_MSN1301; SO119_MSN1303; Sonne
    Type: dataset publication series
    Format: application/zip, 20 datasets
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    DATA PANGAEA
  • 7
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    Planktonic Foraminifera shell calcification intensity from sediment trap L1/K276 from the Azores Front (2002/2003) (2016)
    PANGAEA
    In:  Supplement to: Weinkauf, Manuel F G; Kunze, Jose G; Waniek, Joanna J; Kucera, Michal (2016): Seasonal Variation in Shell Calcification of Planktonic Foraminifera in the NE Atlantic Reveals Species-Specific Response to Temperature, Productivity, and Optimum Growth Conditions. PLoS ONE, 11(2), https://doi.org/10.1371/journal.pone.0148363
    Details
    Publication Date: 2024-07-19
    Description: Using shells collected from a sediment trap series in the Madeira Basin, we investigate the effects of seasonal variation of temperature, productivity, and optimum growth conditions on calcification in three species of planktonic Foraminifera. The series covers an entire seasonal cycle and reflects conditions at the edge of the distribution of the studied species, manifesting more suitable growth conditions during different parts of the year. The seasonal variation in seawater carbonate saturation at the studied site is negligible compared to other oceanic regions, allowing us to assess the effect of parameters other than carbonate saturation. Shell calcification is quantified using weight and size of individual shells. The size-weight scaling within each species is robust against changes in environmental parameters, but differs among species. An analysis of the variation in calcification intensity (size-normalized weight) reveals species-specific response patterns. In Globigerinoides ruber (white) and Globigerinoides elongatus, calcification intensity is correlated with temperature (positive) and productivity (negative), whilst in Globigerina bulloides no environmental forcing is observed. The size-weight scaling, calcification intensity, and response of calcification intensity to environmental change differed between G. ruber (white) and G. elongatus, implying that patterns extracted from pooled analyses of these species may reflect their changing proportions in the samples. Using shell flux as a measure of optimum growth conditions, we observe significant positive correlation with calcification intensity in G. elongatus, but negative correlation in G. bulloides. The lack of a consistent response of calcification intensity to optimum growth conditions is mirrored by the results of shell size analyses. We conclude that calcification intensity in planktonic Foraminifera is affected by factors other than carbonate saturation. These factors include temperature, productivity, and optimum growth conditions, but the strength and sign of the relationships differ among species, potentially complicating interpretations of calcification data from the fossil record.
    Keywords: JGOFS; Joint Global Ocean Flux Study
    Type: dataset publication series
    Format: application/zip, 2 datasets
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    DATA PANGAEA
  • 8
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    Physical oceanography and planktic foraminifera counts from METEOR cruises M36/5 and M36/6 (2001)
    PANGAEA
    In:  Supplement to: Schiebel, Ralf; Waniek, Joanna J; Bork, Matthias; Hemleben, Christoph (2001): Planktic foraminiferal production stimulated by chlorophyll redistribution and entrainment of nutrients. Deep Sea Research Part I: Oceanographic Research Papers, 48(3), 721-740, https://doi.org/10.1016/S0967-0637(00)00065-0
    Details
    Publication Date: 2024-07-19
    Description: During September and October 1996 planktic foraminifers and pteropods were sampled from the upper 2500 m of the water column in the BIOTRANS area (47°N, 20°W), eastern North Atlantic, as part of the JGOFS program. Hydrography, chlorophyll fluorescence, and nutrient content were recorded at high spatial and temporal resolution providing detailed information about the transition time between summer and fall. At the beginning of the cruise a shallow pycnocline was present and oligotrophic conditions prevailed. Over the course of the cruise, the mixed layer depth increased and surface water temperature decreased by 1.5°C. Both chlorophyll-a dispersed in the upper 50 m by vertical mixing and chlorophyll-a concentrations at the sea surface increased. The nitracline shoaled and nutrient enriched waters were entrained into the mixed layer. Planktic foraminifers and pteropods closely reflected the changes in the hydrography by increased growth rates and changes in species composition. Three main groups of planktic foraminiferal species were recognized: (1) a temperate and low-productivity group dominated by Neogloboquadrina incompta characterized the shallow mixed layer depths. (2) A temperate and high-productivity group dominated by Globigerina bulloides characterized the period with wind-induced dispersal of chlorophyll-a and entrainment of nutrient-enriched waters. (3) A warm water group containing Globigerinoides sacculifer, Orbulina universa, Globigerinoides ruber (white), and Globigerinella siphonifera was most common during the first days of sampling. Synchronous with the hydrographic change from summer to fall, planktic foraminiferal and pteropod growth was stimulated by redistribution of chlorophyll-a and entrainment of nutrient-enriched waters into the mixed layer. In addition, the seasonal change in the eastern North Atlantic resulted in a transition of the epipelagic faunal composition and an increased calcareous particle flux, which could be used to trace seasonality in fossil assemblages and allow for better paleoceanographic interpretation of the boreal Atlantic.
    Keywords: JGOFS; Joint Global Ocean Flux Study
    Type: dataset publication series
    Format: application/zip, 7 datasets
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    DATA PANGAEA
  • 9
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    Planktic foraminiferal flux and faunal composition of sediment trap L1_K276 in the northeastern Atlantic (2009)
    PANGAEA
    In:  Supplement to: Storz, David; Schulz, Hartmut; Waniek, Joanna J; Schulz-Bull, Detlef; Kucera, Michal (2009): Seasonal and interannual variability of the planktic foraminiferal flux in the vicinity of the Azores Current. Deep Sea Research Part I: Oceanographic Research Papers, 56(1), 107-124, https://doi.org/10.1016/j.dsr.2008.08.009
    Details
    Publication Date: 2024-07-19
    Description: Planktic foraminiferal (PF) flux and faunal composition from three sediment trap time series of 2002-2004 in the northeastern Atlantic show pronounced year-to-year variations despite similar sea surface temperature (SST). The averaged fauna of the in 2002/2003 is dominated by the species Globigerinita glutinata, whereas in 2003/2004 the averaged fauna is dominated by Globigerinoides ruber. We show that PF species respond primarily to productivity, triggered by the seasonal dynamics of vertical stratification of the upper water column. Multivariate statistical analysis reveals three distinct species groups, linked to bulk particle flux, to chlorophyll concentrations and to summer/fall oligotrophy with high SST and stratification. We speculate that the distinct nutrition strategies of strictly asymbiontic, facultatively symbiontic, and symbiontic species may play a key role in explaining their abundances and temporal succession. Advection of water masses within the Azores Current and species expatriation result in a highly diverse PF assemblage. The Azores Frontal Zone may have influenced the trap site in 2002, indicated by subsurface water cooling, by highest PF flux and high flux of the deep-dwelling species Globorotalia scitula. Similarity analyses with core top samples from the global ocean including 746 sites from the Atlantic suggest that the trap faunas have only poor analogs in the surface sediments. These differences have to be taken into account when estimating past oceanic properties from sediment PF data in the eastern subtropical North Atlantic.
    Keywords: GeoTü; L1_K276; NE Atlantic - Azores Front; Paleoceanography at Tübingen University; Trap, sediment; TRAPS
    Type: dataset publication series
    Format: application/zip, 6 datasets
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    DATA PANGAEA
  • 10
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    Oxygen and hydrogen isotopes measured in the Northeast Atlantic (2015)
    PANGAEA
    In:  Supplement to: Voelker, Antje H L; Colman, Albert Smith; Olack, Gerard; Waniek, Joanna J; Hodell, David A (2015): Oxygen and hydrogen isotope signatures of Northeast Atlantic water masses. Deep Sea Research Part II: Topical Studies in Oceanography, 116, 89-106, https://doi.org/10.1016/j.dsr2.2014.11.006
    Details
    Publication Date: 2024-07-19
    Description: Only a few studies have examined the variation of oxygen and hydrogen isotopes of seawater in NE Atlantic water masses, and data are especially sparse for intermediate and deep-water masses. The current study greatly expands this record with 527 d18O values from 47 stations located throughout the mid- to low-latitude NE Atlantic. In addition, dD was analyzed in the 192 samples collected along the GEOTRACES North Atlantic Transect GA03 (GA03_e=KN199-4) and the 115 Iberia-Forams cruise samples from the western and southern Iberian margin. An intercomparison study between the two stable isotope measurement techniques (cavity ring-down laser spectroscopy and magnetic-sector isotope ratio mass spectrometry) used to analyze GA03_e samples reveals relatively good agreement for both hydrogen and oxygen isotope ratios. The surface (0-100 m) and central (100-500 m) water isotope data show the typical, evaporation related trend of increasing values equatorward with the exception for the zonal transect off Cape Blanc, NW Africa. Off Cape Blanc, surface water isotope signatures are modified by the upwelling of fresher Antarctic Intermediate Water (AAIW) that generally has isotopic values of 0.0 to 0.5 per mil for d18O and 0 to 2 per mil for dD. Along the Iberian margin the Mediterranean Outflow Water (MOW) is clearly distinguished by its high d18O (0.5-1.1 per mil) and dD (3-6 per mil) values that can be traced into the open Atlantic. Isotopic values in the NE Atlantic Deep Water (NEADW) are relatively low (d18O: -0.1 to 0.5 per mil; dD: -1 to 4 per mil) and show a broader range than observed previously in the northern and southern convection areas. The NEADW is best observed at GA03_e Stations 5 and 7 in the central NE Atlantic basin. Antarctic Bottom Water isotope values are relatively high indicating modification of the original Antarctic source water along the flow path. The reconstructed d18O-salinity relationship for the complete data set has a slope of 0.51, i.e., slightly steeper than the 0.46 described previously by Pierre et al. (1994, J. Mar. Syst. 5 (2), 159-170.) for the tropical to subtropical Northeast Atlantic. This slope decreases to 0.46 for the subtropical North Atlantic Central Water (NACW) and the MOW and to 0.32 for the surface waters of the upper 50 m. The dD-salinity mixing lines have estimated slopes of 3.01 for the complete data, 1.26 for the MOW, 3.47 for the NACW, and 2.63 for the surface waters. The slopes of the d18O-dD relationship are significantly lower than the one for the Global Meteoric Water Line with 5.6 for the complete data set, 2.30 for the MOW, 4.79 for the NACW, and 3.99 for the surface waters. The lower slopes in all the relationships clearly reflect the impact of the evaporation surplus in the subtropics.
    Keywords: GEOTRACES; Global marine biogeochemical cycles of trace elements and their isotopes
    Type: dataset publication series
    Format: application/zip, 7 datasets
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    DATA PANGAEA
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