Contribution of A.A. Nikonov in the development of domestic earth sciences

The article reflects on Dr. A.A. Nikonov’s (Doctor of Geological and Mineralogical Sciences) scientific career highlighting his contribution to the development of Paleoseismology. The most important results of Nikonov’s research are in Neotectonics and related to the study of velocities and velocity gradients of modern tectonic movements and active faults. Dr. Nikinov made a significant contribution in advancing the field of Paleoseismology by expanding its tasks, content and developing methodological support for paleogeological, historical and archaeological investigations in Seismology. His research interests extended to platform areas, previously considered as “aseismic” zones, where evidences of strong seismic events were found. In historical seismology Dr. Nikonov incorporated the wide range of sources including written, and folklore evidence of seismic event from preliterate periods. The most valuable result of his investigations is the identification of numerous sources of ancient earthquakes and assessment of their parameters in various regions, including the “aseismic”, where seismic potential was previously underestimated. Evidence of paleo- and historical earthquakes discovered by Nikonov significantly extended the seismic records, increasing instrumental seismic statistics (the basis for seismic hazard assessment) of various regions in Russia and other states. Nikonov had also identified and justified frequent cases of ancient tsunamis along the National sea coasts and lake shores, a serious natural disaster which hazard was poorly recognized.