SEISMICITY MAP AND SEISMOGENIC SOURCES CHARACTERIZATION OF GENERATING TSUNAMIS IN BAHÍA DE OCOA, DOMINICAN REPUBLIC
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Abstract
The Ocoa Bay is exposed to the occurrence of seismic events, that generate tsunamis. Tsunamis events that have occurred in the past, such as October 18, 1751 and May 11, 1910, are clear examples of the destructive potential of tsunamigenic events in the study area. In recent years, economic growth in the region has increased as a resulted of hydrocarbon exploration, mining, and tourism activities, among others, which has led to an increase in population, infrastructure for services, transportation, energy, etc. This causes a concentration of exposed assets to the occurrence of a tsunamigenic events with the potential to cause severe damage. Given this scenario, it is essential to identify flood-hazard zones in case of tsunamis occurrences, which can be represented by tsunami flood hazard maps for different return periods, including events which could potentially occur in the study area or in the simulation of an event with exceptional historical characteristics. For the identification of potentially dangerous zones, seismic data were selected for the elaboration of a local seismic hazard model. Based on this model, an earthquake catalogue of the study area was created and the seismic sources generating tsunamis were characterized according to a seismic zonation classification. Likewise, a map of the distributed seismicity of Ocoa Bay was presented considering the geological structures and local tectonics.
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