TSUNAMIS FROM STRIKE-SLIP AND NORMAL EARTHQUAKES AND ITS RELATION WITH THE PRODUCT OF DOMINANT PERIOD AND DURATION OF MORE THAN 50 SECONDS OF EARTHQUAKE P-WAVE

• Main Authors: Madlazim, Tjipto Prastowo, Muhammad Nurul Fahmi, Dyah Permata Sari, Ella Melianda, Sorja Koesuma
• Format: Article
• Language: English
• Published: Tsunami Society International 2021-07-01
• Series: Science of Tsunami Hazards
• Subjects: tsunami-seismic parameters; p-wave dominant period; p-wave duration of more than 50 seconds; tsunami event validity; strike-slip; normal-faulting earthquakes; tsunami-seismic parameters; p-wave dominant period; p-wave duration of more than 50 seconds; strike-slip
• Online Access: http://www.tsunamisociety.org/402MadlazimEtAl1.pdf

It is widely known that earthquakes with strike-slip or normal-faulting crustal displacements have generated destructive tsunamis around the world. Many researchers have proposed that the main cause of such events was due to factors not associated with tsunami-seismic parameters. However, the present study examines a correlation between tsunamis generated by strike-slip or normal-faulting earthquake events and their associated two tsunami-seismic parameters, namely the dominant period 𝑇d and the duration of more than 50 seconds, 𝑇50ex of earthquake P-wave, and compares these with tsunami event validity (TEV). Based on this analysis, we confirm a correlation between tsunamis generated by strike- slip or normal-faulting earthquake events with periods 𝑇d × 𝑇50ex≥ 10 s. Thus, we propose that major earthquakes with both strike-slip and normal-fault motions, have the potential to generate more effectively tsunamis when the rupture duration is ≥ 50 seconds and P-wave dominant periods have values of 𝑇d × 𝑇50ex≥ 10s.