## 3 Results
### A-DInSAR at Regional Scale
We have related them with abundant unfiltered atmospheric noise. PS with LOS rate of 5.0-10.0 mm year\({}^{-1}\) (167 PS, 0.11%) appear in industrial districts and open pit mining. These deformations were produced by anthropic activity (accumulation of materials). There were only 26 PS (0.02%) with LOS mean velocity \(>\) 10.0 mm year\({}^{-1}\), which were located on an anthropic deposit to the East of Aviles. It could be related to the accumulation of material. Figure 4b displays the LOS mean deformation velocity map (mm year\({}^{-1}\)) obtained by GEP. LOS velocity PS \(<\)\(-\)10.0 mm year\({}^{-1}\) (49 PS, 0.29%) was found as isolated PS except at Musel Port, where some interesting ground movements can be observed. LOS velocity rates of \(-\)10.0--5.0 mm year\({}^{-1}\) (513 PS, 3.08%) and -5.0 to \(-\)2.5 mm year\({}^{-1}\) (1295 PS, 7.78%) appeared throughout the study area. These deformations were seen predominantly in the East of the study area (Gijon city and Penarrubia sector). These PS were difficult to interpret on a regional scale, as they could represent terrain and coastal instabilities (Figure 5c) or an uncorrected atmospheric component. However, there were deformations that may show movements associated to ground coastal instabilities (Figure 5c). LOS rates from 2.5-5.0 mm year\({}^{-1}\) (1956 PS, 11.74%) and 5.0-10.0 mm year\({}^{-1}\) (385 PS, 2.31%) were observed over the whole of the study area. As in the previous case, detailed local analysis should be conducted to obtain a correct interpretation because a significant influence of artifacts and an atmospheric component could act at a regional scale. Finally, PS with LOS mean velocity \(>\) 10.0 mm year\({}^{-1}\), of which there were 43 (0.26 %), found as isolated PS and indicating deformation in an open pit in Aviles city; these velocities can be associated with the accumulation of anthropic materials. Some examples of landslides and coastal instabilities at a regional scale are shown in Figure 5a,b show deformations detected only by means of the PSIG approach, while C displays ground movements measured by the GEP service and PSIG chain. The case of Figure 5a consists of deformations detected in an electrical sub-station to the East of Aviles city. This area was located over anthropic materials overlying a Jurassic bedrock composed of siliceous conglomerate and sandstone. The deformations present VLOS ranging from \(-12.4\) to \(0.6\) mm year\({}^{-1}\), and an increase in the velocity can  
Figure 5: (**a**) Deformations detected in an electrical sub-station (Aviles city) through some observed time series obtained by PSIG software; (**b**) PSIG deformations measured in Musel Port (Gijón city) showing some representative time series; (**c**) GEP and PSIG PS detected in a cliff area. See locations in Figure 4. OrtoPNOA 2017 CC-BY 4.0 scne.es. be observed from the flat areas to the sloping areas. The deformation time series show a minimum accumulated displacement of \(-24\) mm (Figure 5a). Their trends display a stable period from January to July 2018, there then being a more or less constant period of ground movement until February 2020 (Figure 5a). Figure 5b shows deformations registered in Musel Port breakwater wall, with VLOS rates from \(-8.6\) to \(6.3\) mm year\({}^{-1}\). It is an example of deformation in coastal infrastructure. The deformation time series registered a minimum and maximum displacement of \(-35.6\) and \(34.5\) mm. In general, there was an intense episode of deformation during the 4 months from January to April 2018, with accumulated displacements from \(-5\) to \(-20\) mm (Figure 5b). As in April, a deformation trend was observed until February 2020, but slower, even reaching stabilization in some cases. On the other hand, the positive PS presents maximum LOS velocities of \(6.3\) mm year\({}^{-1}\). Their time series have different deformation patterns, with maximum accumulated displacements of \(12.5\) mm. Figure 5c shows PS with VLOS from \(-9.1\) to \(8.1\) mm year\({}^{-1}\).