## 4 Results
The correlation of the SCP with each of the differential interferograms was performed independently for the LOS and vertical (ascending and descending) images, and from this, a box-whisker diagram was constructed, obtaining four multi-temporal sequences that will be shown later. The degree of deformation present in the study region, described by the relationship between the SCP and the differential interferograms between the years 2014 and 2021, is shown in Figure 4; here, we can see the behavior of the displacement of LOS in Figure 4a, and in Figure 4b, the transformation to the vertical, and observe these two sequences in the ascending direction of the satellite. The sequences described in Figure 4a,b show the same trend, but the vertical displacement has a slight increase with respect to LOS. Since the vertical displacement is the transformation of LOS, the maximums and minimums generated on the analyzed region are described [49]. For these two sequences, a maximum (uplift) displacement in the vertical of 151.7 mm (117.5 mm in LOS) and a minimum (subsidence) of \(-\)110.2 mm (\(-\)86.2 mm in LOS) are found. Looking at the complete sequence, between the years 2014 and 2017 the highest rates of deformation are described. Subsequently, a somewhat homogeneous and stable behavior is observed, with an oscillating trend giving an elastic rebound effect that remains in the system at a low magnitude for the subsequent years. On the other hand, in Figure 4c, we can observe the displacement behavior of LOS and in Figure 4d, the transformation to the vertical in the descending direction of the satellite. These two multi-temporal sequences have a maximum vertical deformation of 59.7 mm (49.3 mm in LOS) and a minimum of \(-\)85 mm (\(-\)71.5 mm in LOS) present in 2018. The general behavior of these two sequences differs with respect to Figure 4a,b; this is due in part to the position of the satellite (ascending and descending) and the antenna receiving the backscattered signal, which may be affected by the orbital phase, angle of intake or geometric condition of the medium [1]. The latter, with reference to the orientation and slope of the surfaces of the study region, added to a possible change in the direction of displacement created by seismic activity and the motion tensor, which describes the geometry of the faulted plane in a two-dimensional way and its movement, the latter of which will be evaluated below. The sequence in general manifests the same singularity as the ascending sequence, with an oscillatory effect of low magnitude. For the analysis of the deformation sequences correlated with the seismic events present in the study region, we first want to clarify that this analysis was approached from a temporal perspective between these two aspects. The objective is to determine the influence of seismic activity as a surface deformation element within the pair of processed SAR images, especially for the co-seismic deformation generated by an earthquake [7,61]. For this analysis, the information reported by the Colombian Geological Survey (SGC) was used, in which a record of 86,817 seismic events was obtained for the period between 2014 and 2021 [62]. These events were selected with the parameters of depth (<300 km), magnitude (\(\geq\)1 Mw) and a radius of 200 km (center in Bucaramanga). A filter was made for this catalog where events with a depth between 0 and 50 km, magnitude \(\geq\) 4 Mw and a radius of 200 km were selected, producing a total of 17 seismic events with these characteristics, whose horizontal distance with respect to the study region was calculated (Table 1). The other events present in the selection will be discussed in greater detail in the next chapter with reference to their participation in the degrees of deformation. For the present analysis, the 50 th percentile that is part of the analysis of the SCP (0.7-1) of the previously generated statistical construction of each differential interferometric pair was taken, and this was correlated with the inventory of selected seismic events.