The recent seismicity of the Eastern Cordillera of Colombia

A few moderate magnitude earthquakes have occurred since 2016 in the northern termination of the Algeciras Fault System, the largest events close to Bogotá in the last decade. Using the data of the Colombian National Seismological Network (RSNC) spanning 2016-2019, and complemented with two temporary arrays, one deployed earlier in 2011-2012 and a second one during 2016-2017, we perform earthquake detections through Template Matching, Subspace Detectors and Fingerprint and Similarity Thresholding (FAST, Yoon et al., 2015). The performance of these detection algorithms is compared and the new catalog is analized to better understand the foreshock and aftershock sequences accompanying the largest events and aiming to isolate highly similar earthquakes. Also, we relocate the new catalog using double differences, in order to clarify the geometry of the seismogenic zones of the Eastern Cordillera, especially close to Bogotá.