Upgrading the Sensitivity of the Seismological Network in the Lena River Delta Area

This work is devoted to the study and improvement of the quality parameters of the obtained data of the seismological network in the western area of the Lena River Delta. The sensitivity and azimuth gap between neighboring stations, also known as the “azimuthal gap”, were chosen as the main metrics to be evaluated. When evaluating scenarios for the placement of network points, an area was selected in which the average sensitivity values were estimated as the highest priority metric and azimuth gap. The planning of the placement of points was carried out in order to optimize the sensitivity of the network, ensuring, if possible, an average value of the azimuth gap in the selected area of less than 180°. As a result of the assessment of the current arrangement, it was decided to dismantle the “SML09” point and move the equipment to a more promising location. In addition, a scenario was proposed for the installation of additional stations, in which the average sensitivity in the studied area increases by 0.49, which, according to the Gutenberg–Richter law, should lead to an increase in the number of earthquakes by 2.08 times.