datasets (version 3.0.3)

quakes: 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

Arguments

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 [,1] lat

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.

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.

Examples

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

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