RrupRjb: The source-to-site distances calculator

In wltcwpf/RPSHA: This package implements LASSO to conduct earthquake event/ground motion map selection

The source-to-site distances calculator

Description

This function calculates rupture distance and Rjb distance for a given rectangle finite fault to the given sites. For a multi-fault rupture source, the final distances should be calculated for each rectangle subsection and then taken the minimum values.

Usage

RrupRjb(
  fflat1,
  fflon1,
  fflat2,
  fflon2,
  fdip,
  fdipDir = NA,
  topd,
  width,
  slon,
  slat
)

Arguments

fflat1	Latitude of the start point of the trace of a rectangle finite fault
fflon1	Longitude of the start point of the trace of a rectangle finite fault
fflat2	Latitude of the end point of the trace of a rectangle finite fault
fflon2	Longitude of the end point of the trace of a rectangle finite fault
fdip	The dip angle of the rectangle finite fault subsection
fdipDir	The dip direction. The default is NA, which assumes trace follows right-hand rule such that hanging wall on the right side of trace
topd	The depth to the top of the rectangle finite fault, in km
width	The width of the rectangle finite fault (perpendicular to the trace), in km
slon	A list of longitude of the interest sites
slat	A list of latitude of the interest sites

Value

A data frame of distances with number of rows equals to the number of interest sites and two columns

References

David Eberly (1999). Distance Between Point and Triangle in 3D. Geometric Tools, Redmond WA 98052. http:\www.geometrictools.com/Documentation/DistancePoint3Triangle3.pdf

Examples

RrupRjb(fflat1 = 35.74054, fflon1 = -117.74953, fflat2 = 35.81038,
fflon2 = -117.76365, fdip = 50, topd = 0, width = 13, slon = -118.1, slat = 36.1)

RrupRjb(fflat1 = 35.74054, fflon1 = -117.74953, fflat2 = 35.81038,
fflon2 = -117.76365, fdip = 50, topd = 0, width = 13,
slon = c(-118.1, -118.2), slat = c(36.1, 35.9))

wltcwpf/RPSHA documentation built on July 6, 2023, 1:02 a.m.