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  • Age; AGE; Alkenone, unsaturation index UK'37; B0406; Calculated from C37 alkenones (Prahl & Wakeham, 1987); DEPTH, sediment/rock; GC; Gravity corer; Sea surface temperature; World Ocean  (1)
  • Age; AGE; Arid environment; Caesium-137, activity; Caesium-137, activity, error; Carbon, organic, total; Carbon, organic, total, error, relative; Carbon, organic/Nitrogen, total ratio; Carbon, organic/Nitrogen, total ratio, error; Carbon, organic/Sulfur ratio, error; Carbon, organic total/Sulfur, total, ratio; Carbon and nitrogen and sulfur (CNS) isotope element analyzer, Elementar, Vario EL III; Climate change; Coastal impacts; DEPTH, sediment/rock; Element analyser, Thermo Scientific FLASH2000; GC; Geochemistry; Grain size, mean; Gravity corer; Lacustrine_lagoon_THIII; Lead-210 activity per mass, excess; Lead-210 activity per mass, excess, error; Morocco; Radium-226 activity per mass; Radium-226 activity per mass, error; remote sensing; Saharan wetlands; Sedimentary chlorophyll; Sedimentary chlorophyll, error; δ13C; δ13C, error  (1)
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  • 1
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    Unknown
    Surface temperature reconstruction using alkenones from sediment core B0406 retreived in the Peru upwelling area (2013)
    PANGAEA
    In:  Supplement to: Gutièrrez, Dimitri; Bouloubassi, Ioanna; Sifeddine, Abdelfettah; Purca, Sara; Goubanova, Katerina; Graco, Michelle; Field, David; Méjanelle, Laurence; Velazco, Federico; Lorre, Anne; Salvatteci, Renato; Quispe, Daniel; Vargas, Gabriel; Dewitte, Boris; Ortlieb, Luc (2011): Coastal cooling and increased productivity in the main upwelling zone off Peru since the mid-twentieth century. Geophysical Research Letters, 38, L07603, https://doi.org/10.1029/2010GL046324
    Details
    Publication Date: 2023-04-22
    Description: We reconstructed a high-resolution, alkenone-based sea surface temperature (SST) record spanning the last ca. 150 years, from a sediment core retrieved within the main upwelling zone off Peru. A conspicuous SST decline is evidenced since the 1950s despite interdecadal SST variability. Instrumental SST data and reanalysis of ECMWF ERA 40 winds suggest that the recent coastal cooling corresponds mainly to an intensification of alongshore winds and associated increase of upwelling in spring. Consistently, both proxy and instrumental data evidence increased productivity in phase with the SST cooling. Our data expand on previous reports on recent SST cooling in other Eastern Boundary upwelling systems and support scenarios that relate coastal upwelling intensification to global warming. Yet, further investigations are needed to assess the role of different mechanisms and forcings (enhanced local winds vs. spin-up of the South Pacific High Pressure cell).
    Keywords: Age; AGE; Alkenone, unsaturation index UK'37; B0406; Calculated from C37 alkenones (Prahl & Wakeham, 1987); DEPTH, sediment/rock; GC; Gravity corer; Sea surface temperature; World Ocean
    Type: Dataset
    Format: text/tab-separated-values, 294 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 2
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    Unknown
    Geochemistry of coastal wetland in the Northern Saharan environment through lacustrine sediment core THIll (2020)
    PANGAEA
    Details
    Publication Date: 2023-11-02
    Description: The core was collected manually from a boat employing a gravity core sampler. The core was sliced every two centimeters in the field, packed in individual identified plastics bags, and kept refrigerated. The THIII sediment core (N 28°01.626, W 12°16.558), measuring 48 cm, was recovered in one of the sections of the main water entrance channel in the Lagoon. This site is approximately seven meters deep and lies between two islets of exposed sediment dominated by marine grass specimens of *Zostera noltii*. During the sampling, salinity at the site was 40 PSU (Practical Salinity Unit). Due to its proximity to the inlet, this site is highly influenced by the seawater entrance and ocean nutrients. Aiming the recognition of the environmental changes at this point of the lagoon, we have performed the following measurements in the core's sediments: isotopic ratio of C, dating (210Pb and 137Cs calibration), sedimentation rate, mean grain size, Chlorophyll, Total Organic Carbon (TOC), C/N elemental ratio and C/S elemental ratio.
    Keywords: Age; AGE; Arid environment; Caesium-137, activity; Caesium-137, activity, error; Carbon, organic, total; Carbon, organic, total, error, relative; Carbon, organic/Nitrogen, total ratio; Carbon, organic/Nitrogen, total ratio, error; Carbon, organic/Sulfur ratio, error; Carbon, organic total/Sulfur, total, ratio; Carbon and nitrogen and sulfur (CNS) isotope element analyzer, Elementar, Vario EL III; Climate change; Coastal impacts; DEPTH, sediment/rock; Element analyser, Thermo Scientific FLASH2000; GC; Geochemistry; Grain size, mean; Gravity corer; Lacustrine_lagoon_THIII; Lead-210 activity per mass, excess; Lead-210 activity per mass, excess, error; Morocco; Radium-226 activity per mass; Radium-226 activity per mass, error; remote sensing; Saharan wetlands; Sedimentary chlorophyll; Sedimentary chlorophyll, error; δ13C; δ13C, error
    Type: Dataset
    Format: text/tab-separated-values, 378 data points
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
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