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As part of the recently initiated research project, we are in the process of studying in detail the geodynamic behavior of the Carboneras fault (CF) in the SE Betics in Spain. Specifically, we plan to quantify the geodetic and geologic slip rates for the on-land section of the fault, as well as getting some insight on the state of locking of the fault. As a result of our previous GPS observations, we have been able to illustrate the continuing tectonic activity of the Carboneras fault, expressed mainly as a left-lateral strike slip motion of 1.3±0.2 mm/yr, with a less significant compression of 0.4±0.2 mm/yr (Echeverria et al., 2015). To reveal how the deformation is partitioned between different structures, in the last years 2 new continuous GPS points were established along the fault-perpendicular profile. In addition, we have conducted several surveys of the nearby CuaTeNeo and IGN Regente points and established and measured several new geodetic points in the vicinity of the Carboneras fault. The updated horizontal geodetic slip rates for the CF are 1.1±0.2 and 0.4±0.3 mm/yr in fault parallel and perpendicular directions, respectively. These estimates are somewhat smaller than previously published results, although considering the uncertainties, are statistically equivalent.The above-mentioned geodetic, short-term, slip rates deduced from GNSS observations, are in good agreement with the estimates of geologic slip rates based on paleoseismic and geomorphologic studies, which indicate a minimum strike-slip rate of 1.3 mm/yr and dip-slip rate of 0.05 mm/yr since 110.3 ka (Moreno et al. 2015). In the coming years we plan to conduct further geodetic surveys and paleoseismic trenching surveys. These new data, should significantly improve the reliability of the existent deformation data and therefore, contribute to better understanding of the seismic hazard posed by the Carboneras fault in the SE Betics.Project NSOURCES (PID2020-119772RB-I00) financed by MCIN/AEI/10.13039/501100011033

The Eastern Betics, located on the SE of Spain, is one of the areas with the highest seismic activity within the Iberian Peninsula. The Eastern Betic Shear Zone (EBSZ) is comprised by a set of active, slow-moving faults, which are partially absorbing the ~5 mm deformation caused by the convergence between the Eurasian and Nubian plates. The precise kinematics of these faults remains unclear to this date, due to their slow slip rates and the distributed strain across the region. Over the past years, several studies have focused on this area, especially after the devastating 2011 Lorca earthquake (Mw 5.1). However, there is a lack of precise GNSS observations in the central area of the EBSZ. Therefore, we present here an updated GNSS velocity field of the central EBSZ, which includes all the available continuous stations in the area, as well as continuous and campaign observations carried out under the GeoActiva project (CGL2017-83931-C3-3-P). Additionally, we discuss alternative deformation sources affecting the GNSS observations (other than those of tectonic origin), such as the human-induced subsidence in the Guadalentín River Basin. We use Sentinel-1 SAR images to identify the affected areas and to quantify the impact on the GNSS velocities.This work has been developed in the framework of GeoActiva project (CGL2017-83931-C3-3-P, funded by MCIN/AEI/10.13039/501100011033 and by “ERDF A way of making Europe”) and e-Shape project (H2020 programme, Grant Agreement 820852), as well us under Grant FPU19/03929 (funded by MCIN/AEI/10.13039/501100011033 and by “FSE invests in your future”).