## 3 Geological Data Interpretation
Among these, the prevailing horizontal movements of particular parts of the Dinarides are emphasized, especially in the northern part and in the Alps. In the southern part of the Pannonian Basin (SPB, distinct pools and larger elevated structures in the WNW-ESE direction are dominant. In the zones of the most important faults, reversal shifts in parts of the structures of different vergences are noticed. In the western part of the Pannonian Basin (WPB), the structures are stretched in the NE-SW direction, as well as in the areas of the Sava fault (SF) and Prealps (AF). This indicates the connection between these parts of the structural setting and the recent emergence of common tectonic movements. Direct indicators of the presence of tectonic activity are earthquakes. Their presence in all parts of the included geological structural setting shown in Figure 1 is emphasized. High-intensity earthquake locations stand out in particular. They also indicate the seismotencially most active areas [20; 23; 26; 60]. Earthquake concentrations around Zagreb, Rijeka, south of Zadar, in parts of the Pannonian Basin and especially a number of epicentres between Split and Dubrovnik, stand out. The locations of the strongest earthquakes are Dubrovnik-X\({}^{\circ}\) MCS scale (1667), Zagreb-magnitude 6.3 (1880) and east of Split-magnitude 6.2 (1923). Results and Discussion: Recent Geological Structure Setting, Causes of Tectonic Activity, and Structure Movements  
The velocities and amplitude of the tectonic movements determined by geodetic measurements in the observed period are shown in the chart of Figure 4. The most important observations are highlighted. First, amplitudes greater than 4 and 5 mm were determined at the stations located on the AMP (Figure 3 and Figure 7). These were on Palagruza Island and in part of Istria west of Rijeka. Most important were the amplitudes of movements greater than 4 mm in the area between Split and Dubrovnik and especially those higher than 5 and 7 mm on the south Adriatic islands and around Dubrovnik [47]. It is evident that the expressed movements of the Adriatic microplate (AMP) toward the NNE (Palagruza Island) increase the tectonic activity in the Adriatic (A) regional structural unit and, as a result of the movement toward the NNE, in the contact area with Dinarides, along the Dinaric unit (D). A detailed understanding of the relations was obtained based on the data from four points in Dubrovnik (Figure 4b). The points are located in the broader zone of the most important fault, the Mosor-Biokovo-Dubrovnik fault (4), marking the contact area of the Adriatic (A) and Dinaric (D) units. At the DUBM (1 in Figure 4b) and DUBR (2) stations, the amplitudes were greater than 3 and 4 mm, and at the DUBI and DUB2 stations, they were greater than 5 and 7 mm respectively [47]. It is evident that the amplitude increases in the local reverse structure Srd in the hanging wall of the main branch (4b) of the Mosor-Biokovo-Dubrovnik fault (4a). This is a sign of space compression and reverse structure elevation. The geological movements show vergence toward the SSW, opposite to the movement direction determined at the geodetic points. This is a consequence of the in-depth resistance of the Dinaric rock complex (D) to the initial direction of the Adriatic microplate movement (AMP). In the greater part of the Dinarides, and then along the regional structural unit Adriatic (A) and in the western part of the Pannonian Basin (WPB) near Zagreb, the amplitudes of the tectonic movements are greater than 3 mm. However, some geodetic points are spaced relatively far apart. Larger amplitudes of movement could be expected in the hinterland of Rijeka, north of Zadar, and in the Zumberak-Medvednica structural unit (8 in Figure 11). The established angles of the velocity directions at the geodetic points are particularly interesting (Figure 5). The most important are the almost horizontal directions of the movements, because they show the greatest movements of the particular parts of the regional structural units.