\Header{quakes}{Locations of Earthquakes off Fiji}
\keyword{datasets}{quakes}
\begin{Usage}
\begin{verbatim}data(quakes)\end{verbatim}
\end{Usage}
\begin{Format}
A data frame with 1000 observations on 6 variables.
\Tabular{rlll}{
[,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
}\end{Format}
\begin{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.

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

