// multi-utility computation suite · offline · instant · precise
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│ computation suite │
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sci.p-wave-s-wave-distance Calculator
Calculates the epicentre distance from a seismic station using the P-wave and S-wave arrival time difference. P-wave speed ≈ 6 km/s; S-wave ≈ 3.5 km/s in continental crust — every 8 seconds of P-S delay corresponds to ~67 km of epicentre distance.
Inputs
P Wave Arrival S
Duration of the process. Make sure units match the rate inputs (seconds, minutes, or hours).
S Wave Arrival S
Duration of the process. Make sure units match the rate inputs (seconds, minutes, or hours).
P Wave Velocity Km S
Speed in a specified direction (m/s). Required for momentum, kinetic energy, and wave calculations.
S Wave Velocity Km S
Speed in a specified direction (m/s). Required for momentum, kinetic energy, and wave calculations.
Results
epicentral distance (km)
The computed distance or separation.
S-P time lag (s)
The computed duration or time value.
P-wave travel time (s)
The computed duration or time value.
S-wave travel time (s)
The computed duration or time value.
Wadati method: d = dt × Vp×Vs/(Vp-Vs)
The recommended calculation method or analytical approach for these conditions.