npsp (version 0.3-6)

earthquakes: Earthquake data

Description

The data set consists of 1859 earthquakes (with magnitude above or equal to 2.0 in Richter's scale), which occurred from 25 November 1944 to 16 October 2013 in the northwest (NW) part of the Iberian Peninsula. The area considered is limited by the coordinates 41N-44N and 6W-10W, which contains the autonomic region of Galicia (Spain) and northern Portugal.

Format

A data frame with 1859 observations on the following 6 variables:

date

Date and time (POSIXct format).

time

Time (years since first event).

lon

Longitude.

lat

Latitude.

depth

Depth (km).

mag

Magnitude (Richter's scale).

Source

National Geographic Institute (IGN) of Spain: http://www.ign.es/ign/layout/sismologiaObtencionDatosSismiscos.do.

References

Francisco-Fernandez M., Quintela-del-Rio A. and Fernandez-Casal R. (2012) Nonparametric methods for spatial regression. An application to seismic events, Environmetrics, 23, 85-93.

Examples

str(earthquakes)
summary(earthquakes)
with(earthquakes, spoints(lon, lat, mag, main = "Earthquake data"))