Acoustic information, collected in the form of measurements of integrated echo energies related to time and 3D space has been applied at the Sea Fisheries Institute since 1981 to examine the rough statistical relationships between clupeoids distribution in the Baltic and the relevant environmental factors. In this paper it is shown that the data collected can be also applied for very detail observation of dynamic phenomena in marine ecosystem. Two differentiated case studies were selected to show new acoustic applications in specific areas of oceanographic research. In the first case spatial characteristics of fish diel vertical migration in the southern Baltic was surveyed and analysed for the period 1994-2007, against the environmental background. In the second case acoustic sounding was applied to quantify ebullition of methane from Baltic sediments. Both phenomena are strongly dependent on climatic variability. For both cases the final characteristics of the phenomenon was given in the form of video frames, expressing the processes in time. Unique method of echo-recording transformation into video frames was described and applied to analyse the process of ebullition of methane from the seabed.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Acoustic Tracking Dynamic Phenomena in Marine Ecosystem


    Beteiligte:


    Erscheinungsdatum :

    2012


    Format / Umfang :

    16 Seiten





    Medientyp :

    Aufsatz/Kapitel (Buch)


    Format :

    Print


    Sprache :

    Englisch




    Development and application of a marine ecosystem dynamic model

    Liu, H. | British Library Online Contents | 2011


    Submarine topography surveying and mapping device with marine ecosystem dynamic surveying function

    ZHANG QI / WU SONG / LI CHUNYU et al. | Europäisches Patentamt | 2023

    Freier Zugriff

    Integrated Marine Ecosystem Monitoring: The Pacific Marine Ecozone Trial

    Harding, L. E. / Wilson, R. C. H. | British Library Conference Proceedings | 1995


    Objective of Subjective Acoustic Phenomena

    Bernhard, U. / Alt, N. / Osterreichische Verein fur Kraftfahrzeugtechnik | British Library Conference Proceedings | 2005