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  • Acoustic Doppler Current Profiling (ADCP), Nortek Aquadopp 600 khz; Current velocity, east-west; Current velocity, north-south; DATE/TIME; DEPTH, water; Event label; Hydrographic time series; ice-covered conditions; LATITUDE; LONGITUDE; Nortek Acoustic Wave and Current Profiler (AWAC); Pressure, water; Young Sound, Greenland; Young Sound-Greenland; YS07  (1)
  • Forschungsbericht  (1)
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  • 1
    Online Resource
    Online Resource
    Noise-induced dynamical regimes in a system of globally coupled excitable units (2021)
    Berlin : Weierstraß-Institut für Angewandte Analysis und Stochastik (WIAS) Leibniz-Institut im Forschungsverbund Berlin e.V.
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    Keywords: Forschungsbericht
    Description / Table of Contents: We study the interplay of global attractive coupling and individual noise in a system of identical active rotators in the excitable regime. Performing a numerical bifurcation analysis of the nonlocal nonlinear Fokker-Planck equation for the thermodynamic limit, we identify a complex bifurcation scenario with regions of different dynamical regimes, including collective oscillations and coexistence of states with different levels of activity. In systems of finite size this leads to additional dynamical features, such as collective excitability of different types, noise-induced switching and bursting. Moreover, we show how characteristic quantities such as macroscopic and microscopic variability of inter spike intervals can depend in a non-monotonous way on the noise level.
    Type of Medium: Online Resource
    Pages: 1 Online-Ressource (13 Seiten, 2,76 MB) , Diagramme
    Series Statement: Preprint / Weierstraß-Institut für Angewandte Analysis und Stochastik no. 2853
    URL: https://doi.org/10.20347/WIAS.PREPRINT.2853
    DOI: 10.20347/WIAS.PREPRINT.2853
    Language: English
    Note: Literaturverzeichnis: Seite 11
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  • 2
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    Mooring-based (YS07) data collected in the period May-June 2014 in Young Sound, Greenland (2024)
    PANGAEA
    Details
    Publication Date: 2024-02-14
    Description: Time series of currents were obtained in the period May- June 2014 by use of an ice-tethered mooring in Young Sound, Greenland. At YS07 (74.233o N, 20.133o W) the mooring consisted of a 600 kHz downward-looking Nortek Aquadopp ADCP. Velocities were corrected for magnetic deviation (18.5o). The water column sampling spanned between 1.5 and 30 m depth every 30 min. The ADCP was set to sample 80 bins (bin size of 0.5 m) and each bin consisted of a 1 min ensamble average of 60 pings. The first and last bins were centred at 1m and 41 m depth. Only bins between 2.5 and 30 m were adequately measured. For further details see Boone et al., 2017 (Circulation and fjord-shelf exchange during the ice-covered period in Young Sound-Tyrolerfjord, Northwest Greenland (74o N). Estuar. Coast. Shelf Sci., 15, 194-205. https://doi.org/10.1016/j.ecss.2017.06.021).
    Keywords: Acoustic Doppler Current Profiling (ADCP), Nortek Aquadopp 600 khz; Current velocity, east-west; Current velocity, north-south; DATE/TIME; DEPTH, water; Event label; Hydrographic time series; ice-covered conditions; LATITUDE; LONGITUDE; Nortek Acoustic Wave and Current Profiler (AWAC); Pressure, water; Young Sound, Greenland; Young Sound-Greenland; YS07
    Type: Dataset
    Format: text/tab-separated-values, 2601120 data points
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