article · International Journal of Inventive Engineering and Sciences
Analysis of global earthquake records from 2023, recorded by seismic station RA086 in the city of São Tomé, characterises 5,224 seismic events using ShakeNet and Grapher software. The recorded activity concentrates primarily along major tectonic boundaries such as the Pacific Ring of Fire. Observed event magnitudes range from moderate to very large, including a magnitude 7.6 earthquake off the coast of Indonesia at a depth of 105 kilometres. Recorded events span a broad range of depths, from shallow crustal occurrences to deep-focus events exceeding 500 kilometres in subduction zones. Furthermore, recurring patterns of mainshocks followed by clusters of aftershocks illustrate ongoing tectonic adjustments, particularly within subduction trenches. These findings indicate that comprehensive hazard assessments must account for both shallow and deep seismic occurrences, as depth-dependent energy release directly influences surface shaking and resulting disaster risks.
Understanding how seismic events cluster and release energy at different depths is vital for improving hazard assessments. Earthquakes originate across a wide range of depths, from near the surface to hundreds of kilometres underground. Tracking this complete spectrum of activity helps disaster management planners recognise how subsurface movements translate into surface shaking, thereby supporting better preparedness in vulnerable regions worldwide.
The abstract does not indicate a direct commercial application pathway. The analysis provides baseline observational data that could inform disaster risk assessment and monitoring protocols used by geological surveys, seismological centres, and civil protection agencies. As presented, the work constitutes early-stage research focused on data interpretation rather than a deployable commercial product or technology.
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The paper examines earthquake activity in 2023 using data from the active seismic station RA086 in the city of São Tomé. Five thousand and twenty-four (5,224) events of earthquakes were observed and processed with ShakeNet software and Grapher. On May 20, 2023, a strong earthquake of magnitude 7.6 was reported in the Pacific Ocean, off the coast of the Tanimbar Islands in Indonesia, at a depth of 105 km, and was followed by frequent earthquakes. The data reveal the distribution of earthquakes around the world, which is mainly concentrated in tectonic hotspots like the Pacific Ring of Fire, with magnitudes ranging from very large (7.6) to moderate. The earthquakes varied greatly in depth, ranging from shallow crustal earthquakes to deep-seated, long-focus earthquakes in the subduction zone, with depths over 500km. The analysis also shows frequent coalescence of mainshocks and aftershocks, particularly in subduction trenches, indicating continuous tectonic processes. Another aspect highlighted by the data is that both shallow and deep seismic events should be monitored, as energy released at different depths can affect surface shaking and the potential for disaster.
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DOI: 10.35940/ijies.k1128.12111125
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