Design of a Unified Scale for the Characterization of Seismic Activity


Authors : Anscaire MUKANGE BESA; ZANA NDOTONI

Volume/Issue : Volume 6 - 2021, Issue 7 - July

Google Scholar : http://bitly.ws/9nMw

Scribd : https://bit.ly/3yOfr3z

Generally, the characterization of a seismic zone is based on the calculation of several parameters including, the b-value, the maximum magnitude, the seismic moment, the frequency of the earthquakes, the recurrence period, the energy released, etc. The objective pursued during this research is to find a way to bring together or group together all these parameters within a single quantity called "unified scale of characterization". To do this, our work collected the seismic data of events in the DRC and surroundings with geographical coordinates of 10°E-35°E of longitude and 14°S-6°N of latitude, covering the period from 1910 to 2013. The unification of the parameters, passing through the notion of "seismic species" led to the design of the Unified Scale subdivided into two parts:  The first part consists of the scale linked to the assessment of the seismic hazard. It is noted X123456789.  The second part, noted X(123)(456), relates to the assessment of the vulnerability factor of the area; it is subdivided into two parts: X(123) and X(456). X is an environment-related deform factor. It indicates whether or not there is a volcano, nuclear power plant, lake (ocean), or a combination of these in the area.). the final vulnerability scale will be the product of I(123) and X(456): X(123).(456) = I(123) .X(456) to which a final numerical value will correspond for each zone. X and the indices create degeneration, because they can take the values according to the characteristics of the targeted parameters. The design of this scale offers several advantages for the characterization of a seismic zone; it allows in particular:  A better description of the seismic activity (and geodynamics) of an area over time, thanks to the invention of a device called an acti-seismometer,  A better assessment of the seismic hazard and the vulnerability factor and, therefore, of the seismic risk,  Better characterization of the internal structure of an area (seismic tomography). Used judiciously, this model would make it possible to characterize the seismic activity on our planet for better monitoring, with the possibility of its use for geological prospecting. An improved so-called "quantum" model will soon see the day when it will be a question of representing a seismic zone as an atom and the invention of the Periodic Table called "geo-seismic". We invite you to read our article entitled "application of the unified scale to characterize the seismic activity of the Democratic Republic of the Congo and its surroundings (Comparative study to the Africa, Indonesia and Pacific Coast zones of Central America)” (Mukange, 2021b).

Keywords : Unified Scale, Characterization, Seismic Species, Seismic Coordinates, Seismic Level, Modulus, ActiSeismometer, RDC

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