# A Database for Tsunamis and Meteotsunamis in the Adriatic Sea
## 3 The Database of the Adriatic Meteotsunamis and Tsunamis (DAMT)
The tabular information contained in each layer of the WebApp can be exported in csv format, and it can also be filtered by using user-customized expressions in the tab options of the database table (i.e., selecting data from the extent viewed, by date, reliability, cause, region, etc. or by a combination of several of these parameters). As far as tsunamis are concerned, the ATS layer contains the 24 events with the general description of the effects, mainly taken from the EMTC [2]. Figure 1: Main screen of the DAMT WebApp. On the right, the layer list is shown. Check marks indicate that all levels are highlighted in the map. Blue squares are tsunamigenic sources. Beige-shaded points are tsunami observation points. Red points are meteotsunami observation points. Figure 2: The attribute table allows the user to filter the data contained in the layers of the WebApp according to different selections. Twelve tsunamis were located in the Italian coasts, four in the Croatian ones, three in Montenegro and six along the Albanian coasts. By clicking on one of the blue squares on the screen, a pop-up allows the user to obtain general information on the main parameters of the selected tsunami (earthquake parameters and tsunami intensity), and it can link to the general description of the event. In Figure 3a,b, the example of the 30 October 1930 Ancona tsunami is reported. With regard to the Adriatic Tsunami Observation Points (ATOPs) layer, it hosts 57 observation points where tsunami effects were observed: 28 on the Italian coast, 10 in Croatia, 9 in Montenegro and 9 in Albania, respectively (Figure 4a). The Italian ATOPs came from ITED [1], while ATOPs located on the eastern coasts of the Adriatic Sea came from the analysis of the descriptions of the tsunamis contained in EMTC [2]. Additional information has enriched the knowledge on the tsunamis reported in the catalogue. For eastern coast events, additional information was included, and for each observation point, a \"local\" tsunami intensity value was assessed as \"ex novo\" on both the Ambraseys-Sieberg [32] and Papadopoulos-Imamura [33] scales. The beige-shaded points are the locations where tsunami effects were observed, while the darker points correspond to more severe effects. For each point, descriptive and, when available, quantitative information (inundation, run-up and wave height values) is provided, along with the corresponding bibliographical references. By clicking on each point, through a pop-up window, the user can obtain information about the effects observed, as well as the main info on the generating tsunami (Figure 4b). Among the Adriatic tsunamis, the maximum run-up observed was 2.5 m at Manfredonia (Apulia region in Italy) during the event on 30 July 1627, while the largest inundation was 50 m at Boka Kotorska (Montenegro) for the event on 15 April 1979, during which one person died [1]. The Adriatic Meteotsunami (AM) layer contains 33 meteotsunami events observed or recorded in 54 places along both the eastern and western Adriatic coasts. Most of the data came from [3], with new information, new events and images being added. Among these 54 places, 8 experienced meteotsunami effects more than once. In particular, from 1931 to the present, Vela Luka has been affected by 18 events, and Stari Grad has been affected by 11 events. In Figure 5, the geographical distribution of the places where meteotsunami effects have been observed is visible. As already mentioned above, meteotsunamis are mainly localized along the coasts of Croatia. As for the northern Adriatic region, although  
Figure 3: (**a**) Example of pop-up of the ATS layer, showing the main parameters of the 30 October 1930 Ancona tsunami. (**b**) Example of the 30 October 1930 Ancona tsunami, where the green arrow indicates the link to click on for the general description of the event. it is a region prone to Proudman resonances, due to the lack of bays or harbors with high amplification factors, no major meteotsunamis occur in that area [23].