## 3 GNSS Network Results
According to Appendix A, the velocities with respect to EURA have been plotted in Figure 4. Additionally, the stress tensors produced by these deformations at each point have been represented in Figure 5.  
Regarding the observed annual deformations, three distinct behavior domains are identified, though all exhibit a predominant WWW motion. The first block could comprise the stations of LAGO, HUEL, and LJJA, located in the Gulf of Cadiz region in the southwestern Iberian Peninsula. In this area, it is evident that as the stations become closer to the Strait of Gibraltar, their velocity relative to the fixed Eurasian block increases, with the maximum recorded at LJJA exceeding 2 mm per year. The next tectonic group is known as the Gibraltar Arc, encompassing the Betic Cordillera up to SFER, the Alboran Sea, and northern Morocco, extending from the Rif to CHAF. In the Spanish sector, the data indicate a consistent westward motion of the Betic Cordillera with respect to the relatively stable Iberian Massif block. Displacement rates progressively increase toward the south and west, reaching maximum values in the Gibraltar Strait region (SFER, TARI, and CEUD with velocities ranging between 3.5 and 4.5 mm/yr) before gradually decreasing toward the northwestern mountain front (ALJI and ALME showing displacements between 1 and 2 mm/yr). Additionally, the dynamics in North Africa and the Alboran Sea follow a similar pattern to that observed in the Strait region. However, a small anomaly is noted at MELI to the north, where displacement rates more closely resemble those observed at TAZA in the Atlas Mountains. The ROA time series extends until 2015, but the IGN time series, which includes 2016, captures the earthquake that occurred in the Alboran Sea and affected  
Figure 4: Overview of the confluence zone of North Africa and the southern Iberian Peninsula. The velocities with respect to EURA (scale 5 mm/year) of continuous stations used for the study are plotted. the city of Melilla. The post-seismic period has been included in the processing of MELI. This displacement pattern aligns with the clockwise rotation of tectonic units within the Gibraltar Arc sector. The final domain is composed of the Moroccan Meseta and the Atlas Mountains. Here, a collective northwestward motion is observed, with velocities ranging between 4.5 and 3 mm/yr. There may be a differentiation in behavior among the stations more aligned with the Atlas Mountains domain (TIOU, BENI, IFRN, and RABT), with the station AVER located on the western Moroccan Meseta showing a slight eastward shift and an increase in velocity (5 mm/yr). This deformation observed at the AVER station, which generates an extension relative to the other stations in Morocco, requires further investigation; the results for this area must remain on hold. The time series from the Averroes station suggests a possible subsidence of the terrain that must be considered in detail. TAZA, located in the Middle Atlas, exhibits a rotation toward the NNW as previously noted, while ERRA, situated within the more stable portion of the NUBIA, displays a distinct pattern. In Figure 5, the stress tensors at each point derived from these residual velocities are also displayed. Overall, it is evident that the region exhibits a continuously evolving plate collision regime with a dominant oblique horizontal compressional trend, following a NW-SE direction. The displacement is better seen in Figure 4 with respect to stable Eurasia. In Figure 5, it is observed mainly in the center-east of Alboran and Rif. Along the southwestern coast of the Iberian Peninsula, it is variable in the Gulf of Cadiz; as a result, there appear to be small arrows of NW-SE extension towards the N part of the Gulf and ENE-WSW compression towards the central zone. Between AlJI and LIJA, there is almost an N-S extension. The ENE-WSW compression in the Gulf of Cadiz is straightforward to interpret as it likely corresponds to the westward thrusting of the Gibraltar Arc.