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  • 1
    Publication Date: 2011-08-18
    Print ISSN: 0921-030X
    Electronic ISSN: 1573-0840
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Geography , Geosciences
    Published by Springer
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  • 2
    Publication Date: 2017-04-04
    Description: Abstract Tsunami activity in the Adriatic Sea from the sixteenth century until the present has been analysed with the ultimate goal to improve the European tsunami catalogue and provide data for a new geo-database of tsunami events in the European-Mediterranean region. The study encompasses twenty-seven events, nine on the western and eighteen on the eastern coast of the Adriatic, with special attention being devoted to contemporary sources and to local journals and newspapers. For all the analysed events, the path of information from coeval sources, through the nineteenth century and up to modern tsunami catalogues, has been constructed. Tsunamis on the western coast have already been studied, but to obtain a coherent picture of tsunamigenic activity in the Adriatic Sea, they have been included in this work. Furthermore, the study was extended to see whether they had propagated to the opposite coast. Most of the events on the eastern coast have now been systematically analysed for the first time. The search of bibliographical sources revealed three new reports on tsunamis on the eastern coast that had not been previously recorded in international publications. The study established that, out of the eighteen eastern Adriatic events, twelve can be considered false, while six were true tsunamis. In the last 600 years, fifteen true tsunami events occurred in the Adriatic. One was very strong, six were strong or rather strong, and eight were light tsunamis. As a final result of this analysis, carried out according to standardised criteria, fifteen Adriatic tsunami events will be inserted in the TRANSFER (Tsunami Risk ANd Strategies For the European Region) database for the European-Mediterranean region.
    Description: The research was funded by the EU through the TRANSFER project and by the Ministry of Science, Education and Sports of the Republic of Croatia (grant 119-1193086-3085).
    Description: Published
    Description: 281–316
    Description: 1.8. Osservazioni di geofisica ambientale
    Description: JCR Journal
    Description: reserved
    Keywords: historical tsunamis ; catalogue ; Adriatic Sea ; 05. General::05.09. Miscellaneous::05.09.99. General or miscellaneous
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 3
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    In:  XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
    Publication Date: 2023-06-06
    Description: Adriatic is not widely acknowledged as region of significant upwelling. Short episodes occur under strong synoptic-scale wind - bora on the eastern or sirocco on the western coast. However, historic observations, summer satellite SST fields and existence of unexpectedly rich benthic vegetation at specific sites on the eastern edge of Jabuka Pit indicate that during summer more persistent upwelling occurs at offshore islands of the eastern Middle Adriatic. Temperature data along water column recorded continuously for seven years at Blitvenica are analyzed together with wind field and results from ROMS ocean model to ascertain existence of upwelling, determine its temporal scale, intensity and interannual variability. Temperature data document distinct midsummer cooling by some 3 to 5 °C, recurring from June to August each year with changing intensity. The cooling is occasionally interrupted by short warming events. Predominant wind circulation in summer is northwest, upwelling-favorable etesian airflow, but sporadic short episodes of strong cross-shore bora intensify surface cooling while gale downwelling-favorable sirocco produces abrupt brief warming. The general midsummer cooling is realized in a series of episodes, each lasting some three days. Vertical velocity related to Ekman transport, estimated from wind field, reaches 10 m/day (20 m/day) during strong upwelling (downwelling). Wind curl around Blitvenica is nearly always positive but Ekman suction velocities are usually much smaller. Finally, time evolution of cooling/heating within water column closely agrees with the vertical velocity except during episodes of strong surface heat flux, providing firm evidence of seasonal upwelling along eastern side of Middle Adriatic.
    Language: English
    Type: info:eu-repo/semantics/conferenceObject
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  • 4
    Publication Date: 2023-06-15
    Description: Five oceanographic cruises were organized from 2017 to 2021 to explore occurrence of upwelling and downwelling in the eastern part of Middle Adriatic. Four cruises took place in late May or early June whereas the 2020 cruise was in August. High-resolution, yo-yo CTD profiling together with ship-borne ADCP measurements were performed along a vertical cross-section over the Middle Adriatic Pit. Wind fields were obtained from operational meteorological model ALADIN. The strongest upwelling, both coastal and open-sea, was observed in 2017 after several days of strong, upwelling favorable NNW winds, also characterized by a significant positive curl. In 2018, under mild, nearly curl-free NW winds, the pycnocline was almost flat, slightly rising in the vicinity of coast, whereas in 2019 moderate sirocco with negative curl produced strong downwelling in the area stretching about ~30 km from the coast. Measurements in 2020 were performed twice, one day apart; in a strongly stratified sea with no offshore wind-curl, only coastal upwelling was observed as an almost linear rise of the pycnocline. First measurement in 2021 was done after two days of strong NW wind turning to strong sirocco, the second followed two days later. The two passes revealed a complex wave-like structure of the pycnocline (variability of ~15 m in the vertical and ~35 km in the horizontal direction). Hydrodynamic model ROMS is used to reproduce and interpret the empirical findings. The open-sea upwelling in the eastern Middle Adriatic occurs when a significant positive-curl wind blows for several days over moderately stratified sea.
    Language: English
    Type: info:eu-repo/semantics/conferenceObject
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  • 5
    Publication Date: 2023-06-01
    Description: An experiment, carried out in the Middle Adriatic in late May 2017, documented the existence of a dense water dome in the area between the island of Blitvenica (close to the east coast) and the island of Jabuka (in the open sea). The yo-yo CTD measurements showed that the dome center was located at a distance of about 20 km from the coast while the vmADCP measurements revealed that the surface circulation around the dome was cyclonic. The temperature above the dome was slightly lower than farther off, as documented by in situ and remotely-sensed data. At the same time, a decrease of temperature close to the east coast was documented by bottom probes and satellite images. The meteorological data and modeling results showed that during the May 2017 experiment the northern winds prevailed, implying that the observations could be interpreted in terms of simultaneous occurrence of open-sea and coastal upwelling. With the aim of verifying the interpretation, a number of schematized numerical experiments were conducted. To begin with, the modelled wind fields were decomposed into the curl and curl-free components by using the Helmholtz-Hodge decomposition. Subsequently, the components were used to impose the forcing on the Adriatic model, assuming flat bottom and realistic bathymetry. The simulations showed that the wind curl was responsible for the occurrence of open-sea upwelling whereas the curl-free wind component supported the development of coastal upwelling.
    Language: English
    Type: info:eu-repo/semantics/conferenceObject
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