The data set give the locations of 1000 seismic events of MB > 4.0. The events occurred in a cube near Fiji since 1964.
A data frame with 1000 observations on 5 variables.
|[,1]||lat||numeric||Latitude of event|
|[,5]||stations||numeric||Number of stations reporting|
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.
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.
require(graphics) pairs(quakes, main = "Fiji Earthquakes, N = 1000", cex.main = 1.2, pch = ".")