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- Title
EFFECTIVE TSUNAMI EARLY WARNING USING THE PRODUCT OF P-WAVE DOMINANT PERIOD AND SOURCE RUPTURE DURATION OF MORE THAN 50 SECONDS.
- Authors
Madlazim; Prastowo, Tjipto; Fahmi, Muhammad Nurul; Melianda, Ella; Kusuma, Soerja
- Abstract
In this study, we used a tsunami-faulting model, where the discriminant for tsunami potential is the dominant period ! of P-waves times the rupture duration of an earthquake ! of more than 50 seconds. The product of TdT50ex was estimated in real time and validated with Tsunami Event Validity (TEV) from NOAA/WDC database. The TdT50ex discriminant was calculated using a direct procedure for the vertical component of P-wave seismograms velocity. The data were obtained from 51 earthquakes that occurred during 2011-2020 with magnitudes of 6.5 ≤ Mw 8.6, containing 19 strike-slips fault, 11 normal-fault and 21 reverse-fault earthquakes. The results suggest that earthquakes are said to be potential to generate tsunamis when TdT50ex ≥ 10 s is satisfied. In summary, TdT50ex is proved to be an effective tsunami discriminant to detect the presence of a tsunami wave after about 4 minutes an earthquake occurs, implying that this is (can be accessed at http://prediksi-tsunami.unesa.ac.id/www/index.html) a useful parameter for rapid and accurate tsunami early warning.
- Subjects
UNITED States. National Oceanic &; Atmospheric Administration; TSUNAMI warning systems; TSUNAMIS; SEISMOGRAMS; EARTHQUAKES; WARNINGS; VELOCITY
- Publication
Science of Tsunami Hazards, 2022, Vol 41, Issue 1, p42
- ISSN
8755-6839
- Publication type
Article