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 = ".")
Results
R version 3.3.1 (2016-06-21) -- "Bug in Your Hair"
Copyright (C) 2016 The R Foundation for Statistical Computing
Platform: x86_64-pc-linux-gnu (64-bit)
R is free software and comes with ABSOLUTELY NO WARRANTY.
You are welcome to redistribute it under certain conditions.
Type 'license()' or 'licence()' for distribution details.
R is a collaborative project with many contributors.
Type 'contributors()' for more information and
'citation()' on how to cite R or R packages in publications.
Type 'demo()' for some demos, 'help()' for on-line help, or
'help.start()' for an HTML browser interface to help.
Type 'q()' to quit R.
> library(datasets)
> png(filename="/home/ddbj/snapshot/RGM3/R_rel/result/datasets/quakes.Rd_%03d_medium.png", width=480, height=480)
> ### Name: quakes
> ### Title: Locations of Earthquakes off Fiji
> ### Aliases: quakes
> ### Keywords: datasets
>
> ### ** Examples
>
> require(graphics)
> pairs(quakes, main = "Fiji Earthquakes, N = 1000", cex.main = 1.2, pch = ".")
>
>
>
>
>
> dev.off()
null device
1
>