earthquake {feature}

Mt St Helens earthquake data

Description

This data set is a reduced version of the full data set in Scott (1992). It contains the first three variables.

Usage

data(earthquake)

Format

A matrix with 3 columns and 510 rows. Each row corresponds to the measurements of an earthquake beneath the Mt St Helens volcano. The first column is the longitude (in degrees, where a negative number indicates west of the International Date Line), the second column is the latitude (in degrees, where a positive number indicates north of the Equator) and the third column is the depth (in km, where a negative number indicates below the Earth's surface).

Source

Scott, D.W. (1992). Multivariate Density Estimation: Theory, Practice and Visualization. John Wiley & Sons Inc., New York.