earthquakes {HDiR}

Earthquakes on Earth between October 2004 and April 2020

Description

Geographical coordinates (latitude and longitude) of earthquakes of magnitude greater than or equal to 2.5 degrees.

Usage

data("earthquakes")

Format

A data frame with 272 observations on the following 2 variables:

Latitude

A numeric vector containing the latitude coordinates.

Longitude

A numeric vector containing the longitude coordinates.

Details

To map this dataset on the unit sphere, function euclid in package Directional can be used.

Source

European-Mediterranean Seismological Centre, https://www.emsc-csem.org.

Examples

if (requireNamespace("ggplot2", quietly = TRUE)) {
library(ggplot2)
}
if (requireNamespace("maps", quietly = TRUE)) {
library(maps)
}
if (requireNamespace("mapproj", quietly = TRUE)) {
library(mapproj)
}
data(earthquakes)
world <- map_data("world")
g.earthquakes <- ggplot() +
  geom_map(data = world, map = world,
           mapping = aes(map_id = region),
           color = "grey90", fill = "grey80") +
  geom_point(data = earthquakes,
            mapping = aes(x = Longitude, y = Latitude),
            color = "red",alpha=.2,size=.75,stroke=0) +
    scale_y_continuous(breaks = NULL, limits = c(-90, 90)) +
  scale_x_continuous(breaks = NULL, limits = c(-180, 180)) +
  coord_map("mercator")
g.earthquakes