SUMMARY
The discussion centers on the seismic events of September 25, 2014, specifically the Mw 6.0 earthquake offshore, 160 km SSW of Gizo, Solomon Islands, followed by a Mw 6.2 earthquake, 94 km WNW of Willow, Alaska. The earthquakes were analyzed based on their depth and distance, with particular attention to the identification of P and S wave phases. The participant Dave calculated the P wave arrival time to be approximately 4 to 5 minutes after the quake's origin time, demonstrating a clear understanding of seismic wave propagation.
PREREQUISITES
- Understanding of seismic wave types (P and S waves)
- Knowledge of earthquake magnitude scales (Mw)
- Familiarity with seismogram analysis
- Basic principles of wave propagation and travel time calculations
NEXT STEPS
- Research seismic wave identification techniques in seismology
- Study earthquake magnitude scales and their implications
- Explore seismogram interpretation methods
- Learn about the P wave velocity and its calculation in different geological contexts
USEFUL FOR
Seismologists, geophysicists, students of earth sciences, and anyone interested in understanding earthquake mechanics and seismic data analysis.
Not the largest event in the last 24 Hrs. it was followed by a Mw 6.2, 94km WNW of Willow, Alaska at 1751UT. but because of its depth and distance, it doesn't show up well ... see the small set of surface waves between ~ 1830 and 1859UT