travel.time1D: Seismic Travel Time 1D

In RSEIS: Seismic Time Series Analysis Tools

Seismic Travel Time 1D

Description

Travel time from source to reciever in 1D local model.

Usage

travel.time1D(indelta, inhpz, instaz, inlay, ztop, vel)
many.time1D(indelta, inhpz, instaz, inlay, ztop, vel)

Arguments

indelta	distance in KM
inhpz	depth of hypocenter, km
instaz	elevation of station
inlay	number of layers
ztop	vector, tops of layers
vel	vector, velocities in layers

Details

Uses local 1D velocity model, not appropriate for spherical earth. The many.time1D version will take a vector of distances (indelta) and either one station elevation or a vector.

The station elevation should be referenced to the top of the velocity model, not necessarily sea level. Usually this is set to zero and a station correction is used to take into account the topographic and other geologic effects.

Value

list:

dtdr	derivative of t w.r.t. horizontal distance
dtdz	derivative of t w.r.t. z, depth
angle	incidence angle, degrees
tt	travel time, s

Author(s)

Jonathan M. Lees<jonathan.lees.edu>

See Also

Ray.time1D, Get1Dvel

Examples

data(VELMOD1D)

v <- VELMOD1D

tees <- travel.time1D(23, 7, 0, length(v$zs) , v$zp , v$vp)

print(tees)

RSEIS documentation built on Aug. 19, 2023, 5:07 p.m.