quakes               package:datasets               R Documentation

Locations of Earthquakes off Fiji

Description:

     The data set give the locations of 1000 seismic events of MB >
     4.0. The events occurred in a cube near Fiji since 1964.

Usage:

     quakes

Format:

     A data frame with 1000 observations on 5 variables.

       [,1]  lat       numeric  Latitude of event
       [,2]  long      numeric  Longitude
       [,3]  depth     numeric  Depth (km)
       [,4]  mag       numeric  Richter Magnitude
       [,5]  stations  numeric  Number of stations reporting

Details:

     There are two clear planes of seismic activity.  One is a major
     plate junction; the other is the Tonga trench off New Zealand. 
     These data constitute a subsample from a larger dataset of
     containing 5000 observations.

Source:

     This is one of the Harvard PRIM-H project data sets.  They in turn
     obtained it from Dr. John Woodhouse, Dept. of Geophysics, Harvard
     University.

Examples:

     require(graphics)
     pairs(quakes, main = "Fiji Earthquakes, N = 1000", cex.main=1.2, pch=".")

