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  • 2020-2023  (1)
  • 2000-2004  (11)
  • 1990-1994  (1)
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Year
  • 1
    Electronic Resource
    Electronic Resource
    Terrestrial carbon-isotope records from coastal deposits (Algarve, Portugal): a tool for chemostratigraphic correlation on an intrabasinal and global scale (2003)
    Oxford, UK : Blackwell Science Ltd
    Terra nova 15 (2003), S. 0 
    Details
    ISSN: 1365-3121
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: The carbon-isotope signature of terrestrial organic matter (OM) offers a valuable tool to develop stratigraphic correlations for near-shore deposits. A mid-Cretaceous coastal succession of the western Algarve Basin, Portugal, displays a marked negative δ13C excursion ranging from − 21.2‰ to − 27.8‰ in the Early Aptian followed by two shifts towards higher values (up to − 19.3‰) during the Early and Late Aptian, respectively. The dominance of cuticle and leaf debris in the bulk OM fraction is confirmed by optical studies, Rock-Eval pyrolysis and by comparison with the δ13C signature of four different types of fossilized land-plant particles. Correlation of two terrestrial δ13Cbulk OM records from different study sites leads to a significant enhancement of the intrabasinal stratigraphic correlation within the Algarve Basin. Three prominent excursions in the Portuguese records can be correlated with existing δ13C curves from pelagic and terrestrial environments. The general carbon-isotope pattern is superimposed by small-scale fluctuations which can be explained by compositional variations within the OM.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-3121.2003.00447.x
    Location Call Number Limitation Availability
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    A general transposition method for a matrix on auxiliary store (1990)
    Springer
    BIT 30 (1990), S. 2-16 
    Details
    ISSN: 1572-9125
    Keywords: E.2 ; F.2.1 ; G.4 ; I.1.2 ; Matrix transposition ; mixed radix notation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract An algorithm is developed and described for transposing a matrix larger than available working storage. If an (n×m)-matrix is stored in row-major order, and blocks ofn elements may be transferred to and from working storage at a time, the algorithm needsw=(5[m/n]+8)·n elements to be present in working storage at a time and requires [log2(2mn/w)] passages over the matrix. The algorithm is as efficient as earlier methods but needs no extra backing storage space. An algebra for mixed radix notation and a generalization of mixed radix notation is introduced for the description and verification of transposition algorithms, and earlier algorithms are briefly certified or disproved.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01932126
    Location Call Number Limitation Availability
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    Paper (German National Licenses)
    Fulltext
  • 3
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    Evolution of Sea Surface Hydrology Along the Western Australian Margin Over the Past 450 kyr (2021)
    Details
    Publication Date: 2022-03-24
    Description: We collected a suite of core top samples during R/V Sonne Cruise SO257 in May 2017 along the southwestern front of the Indo‐Pacific Warm Pool (IPWP) to monitor the variability of Southern Hemisphere tropical and subtropical sea surface hydrology and to assess temperature and salinity reconstructions with data sets reflecting conditions in the post‐monsoonal season. In our core top samples, a steep increase in planktic δ18O, associated with a decrease in sea surface temperature (SST), indicates that the southwestern front of the IPWP is located between 23° and 24°S during austral fall. We additionally reconstructed SST, sea surface salinity ,and δ18O seawater (δ18Osw) over the last 450 kyr in two sediment successions located within and beyond the monsoonal rain belt. Our records show that SST was highly coherent and phase‐locked with atmospheric pCO2 during the last 450 kyr. The regional differences in the δ18Osw records reveal that the Western Australian Margin north of 15°S remained seasonally under the influence of IPWP water masses, even during glacials. The temporal variability in upper ocean hydrology along the Western Australian Margin is not directly coupled to local monsoonal precipitation, but is strongly affected by advective mixing of Indonesian Throughflow derived water masses.
    Description: Key Points: Southwest front of modern Indo‐Pacific Warm Pool (IPWP) during austral fall is located between 23° and 24°S. Western Australian Margin north of 15°S remained seasonally influenced by IPWP throughout past 450 kyr. Upper ocean hydrology off Western Australia represents an integrated signal of monsoonal precipitation and advective mixing.
    Description: China Scholarship Council
    Description: German Federal Ministry of Education and Research
    Keywords: ddc:551.46
    Language: English
    Type: doc-type:article
    Location Call Number Limitation Availability
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    CITATION GEO-LEO
  • 4
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    SST of sediment trap WR2 (2003)
    PANGAEA
    Details
    Publication Date: 2023-02-24
    Keywords: ANT-VII/5; Calculated; Calculated from UK'37 (Prahl et al., 1988); DATE/TIME; Date/time end; DEPTH, water; Duration, number of days; GeoB; Geosciences, University of Bremen; Polarstern; PS14; Sample code/label; Sea surface temperature, annual mean; Trap; TRAP; Walvis Ridge, Southeast Atlantic Ocean; WR2_trap
    Type: Dataset
    Format: text/tab-separated-values, 78 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 5
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    Biomarker of sediment trap CB2 (2003)
    PANGAEA
    Details
    Publication Date: 2023-11-30
    Keywords: 24-Ethylcholest-5-en-3beta-ol, flux; 24-ethylcholest-5-en-3beta-ol, per unit mass total organic carbon; 24-Methylcholesta-5,22E-dien-3beta-ol, flux; 24-Methylcholesta-5,22E-dien-3beta-ol, per unit mass total organic carbon; 24-Methylcholesta-5,24(28)-dien-3beta-ol, flux; 24-Methylcholesta-5,24(28)-dien-3beta-ol, per unit mass total organic carbon; 4alpha,23,24-Trimethyl-5alpha-cholest-22E-en-3beta-ol, flux; 4alpha,23,24-Trimethyl-5alpha-cholest-22E-en-3beta-ol, per unit mass total organic carbon; Alkenone, C37, flux; Alkenone, C37 normalized to total organic carbon; Calculated; Calculated, see reference(s); CB2_trap; Cholesta-5-en-3beta-ol, flux; Cholesta-5-en-3beta-ol, per unit mass total organic carbon; DATE/TIME; Date/time end; DEPTH, water; Duration, number of days; GeoB; Geosciences, University of Bremen; M9/4; Meteor (1986); Sample code/label; Trap; TRAP
    Type: Dataset
    Format: text/tab-separated-values, 339 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 6
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    Biomarker of sediment trap GBN3 (2003)
    PANGAEA
    Details
    Publication Date: 2023-11-30
    Keywords: 24-Ethylcholest-5-en-3beta-ol, flux; 24-ethylcholest-5-en-3beta-ol, per unit mass total organic carbon; 24-Methylcholesta-5,22E-dien-3beta-ol, flux; 24-Methylcholesta-5,22E-dien-3beta-ol, per unit mass total organic carbon; 24-Methylcholesta-5,24(28)-dien-3beta-ol, flux; 24-Methylcholesta-5,24(28)-dien-3beta-ol, per unit mass total organic carbon; 4alpha,23,24-Trimethyl-5alpha-cholest-22E-en-3beta-ol, flux; 4alpha,23,24-Trimethyl-5alpha-cholest-22E-en-3beta-ol, per unit mass total organic carbon; Alkenone, C37, flux; Alkenone, C37 normalized to total organic carbon; Calculated; Calculated, see reference(s); Cholesta-5-en-3beta-ol, flux; Cholesta-5-en-3beta-ol, per unit mass total organic carbon; DATE/TIME; Date/time end; DEPTH, water; Duration, number of days; GBN3_trap; GeoB; Geosciences, University of Bremen; M9/4; Meteor (1986); Sample code/label; Trap; TRAP
    Type: Dataset
    Format: text/tab-separated-values, 311 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 7
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    Biomarker of sediment trap WR3 (2003)
    PANGAEA
    Details
    Publication Date: 2023-11-30
    Keywords: 24-Ethylcholest-5-en-3beta-ol, flux; 24-ethylcholest-5-en-3beta-ol, per unit mass total organic carbon; 24-Methylcholesta-5,22E-dien-3beta-ol, flux; 24-Methylcholesta-5,22E-dien-3beta-ol, per unit mass total organic carbon; 24-Methylcholesta-5,24(28)-dien-3beta-ol, flux; 24-Methylcholesta-5,24(28)-dien-3beta-ol, per unit mass total organic carbon; 4alpha,23,24-Trimethyl-5alpha-cholest-22E-en-3beta-ol, flux; 4alpha,23,24-Trimethyl-5alpha-cholest-22E-en-3beta-ol, per unit mass total organic carbon; Alkenone, C37, flux; Alkenone, C37 normalized to total organic carbon; Calculated; Calculated, see reference(s); Cholesta-5-en-3beta-ol, flux; Cholesta-5-en-3beta-ol, per unit mass total organic carbon; DATE/TIME; Date/time end; DEPTH, water; Duration, number of days; GeoB; Geosciences, University of Bremen; M12/1; Meteor (1986); Sample code/label; Trap; TRAP; Walvis Ridge, Southeast Atlantic Ocean; WR3_trap
    Type: Dataset
    Format: text/tab-separated-values, 243 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 8
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    Biomarker of sediment trap WR2 (2003)
    PANGAEA
    Details
    Publication Date: 2023-11-30
    Keywords: 24-Ethylcholest-5-en-3beta-ol, flux; 24-ethylcholest-5-en-3beta-ol, per unit mass total organic carbon; 24-Methylcholesta-5,22E-dien-3beta-ol, flux; 24-Methylcholesta-5,22E-dien-3beta-ol, per unit mass total organic carbon; 24-Methylcholesta-5,24(28)-dien-3beta-ol, flux; 24-Methylcholesta-5,24(28)-dien-3beta-ol, per unit mass total organic carbon; 4alpha,23,24-Trimethyl-5alpha-cholest-22E-en-3beta-ol, flux; 4alpha,23,24-Trimethyl-5alpha-cholest-22E-en-3beta-ol, per unit mass total organic carbon; Alkenone, C37, flux; Alkenone, C37 normalized to total organic carbon; ANT-VII/5; Calculated; Calculated, see reference(s); Cholesta-5-en-3beta-ol, flux; Cholesta-5-en-3beta-ol, per unit mass total organic carbon; DATE/TIME; Date/time end; DEPTH, water; Duration, number of days; Gas chromatography - Mass spectrometry (GC-MS); GeoB; Geosciences, University of Bremen; Polarstern; PS14; Sample code/label; Trap; TRAP; Walvis Ridge, Southeast Atlantic Ocean; WR2_trap
    Type: Dataset
    Format: text/tab-separated-values, 468 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 9
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    Paleotemperatures, stable isotopes and alkenones of samples from the South Atlantic (2004)
    PANGAEA
    Details
    Publication Date: 2024-02-02
    Keywords: Alkenone, Ep; Alkenone, δ13C; Amazon Fan; Angola Basin; B_LANDER; Bottom lander; Brazil Basin; Calculated; Calculated from UK'37 (Prahl et al., 1988); Carbon dioxide, dissolved; Carbon dioxide, partial pressure; DEPTH, sediment/rock; Elevation of event; Event label; Gas chromatography; GeoB; GeoB1008-6; GeoB1016-3; GeoB1501-1; GeoB1503-2; GeoB1505-3; GeoB1508-1; GeoB1515-2; GeoB1703-5; GeoB1706-1; GeoB1711-2; GeoB1719-5; GeoB1903-1; GeoB2102-1; GeoB2125-2; GeoB2215-8; Geosciences, University of Bremen; Giant box corer; GIK17843-1; GKG; Gravity corer (Kiel type); Latitude of event; Longitude of event; M16/2; M20/2; M23/2; M23/3; M6/6; Mass spectrometer Finnigan MAT 252; Meteor (1986); Mid Atlantic Ridge; MUC; MultiCorer; Namibia Continental Margin; Namibia continental slope; off Kunene; Phosphate; Photometer, molybdene blue, reduct SnCl; Sea surface temperature, annual mean; SFB261; SL; SO84; Sonne; South Atlantic in Late Quaternary: Reconstruction of Budget and Currents; ST. HELENA HOTSPOT; Walvis Ridge; δ15N, gas
    Type: Dataset
    Format: text/tab-separated-values, 119 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 10
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    Biomarker of sediment core GeoB1405-8 (2003)
    PANGAEA
    Details
    Publication Date: 2024-02-02
    Keywords: 24-Ethylcholest-5-en-3beta-ol, flux; 24-ethylcholest-5-en-3beta-ol, per unit mass total organic carbon; 24-Methylcholesta-5,22E-dien-3beta-ol, flux; 24-Methylcholesta-5,22E-dien-3beta-ol, per unit mass total organic carbon; 4alpha,23,24-Trimethyl-5alpha-cholest-22E-en-3beta-ol, flux; 4alpha,23,24-Trimethyl-5alpha-cholest-22E-en-3beta-ol, per unit mass total organic carbon; Alkenone, C37, flux; Alkenone, C37 normalized to total organic carbon; Calculated, see reference(s); Cholesta-5-en-3beta-ol, flux; Cholesta-5-en-3beta-ol, per unit mass total organic carbon; DEPTH, sediment/rock; GeoB; GeoB1405-8; Geosciences, University of Bremen; M16/1; Meteor (1986); MUC; MultiCorer; Northern Guinea Basin
    Type: Dataset
    Format: text/tab-separated-values, 108 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
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