Earthquakes of Japan

Description

A data frame with 9189 rows and 6 columns giving occurrence date, time (in decimal days after the first earquake), longitude, latitude, magnitude and depth of shallow earthquakes (depth < 100 km) occurred since 1966-01-01 till 2016-01-01 in Japan and its vicinity (128-145E and 27-45N). Only earthquakes with magnitude greater than or equal to 4.5 are included.

Usage

data(jap.quakes)

Format

An object of class "data.frame" containing the following columns:

• date Occurrence date in the format "yyyy/mm/dd"

• time Occurrence time in decimal days after the first earquake

• long Latitude of epicenter in decimal degrees

• lat Latitude of epicenter in decimal degrees

• mag Magnitude of each earthquake by JMA (Japan Meteorological Agency)

• depth Depth of each earthquake

Source

Data retrieved from the ISC Bulletin event catalogue

References

International Seismological Centre, On-line Bulletin, http://www.isc.ac.uk, Internatl. Seis. Cent., Thatcham, United Kingdom, 2013.

Di Giacomo, D., Harris, J., Villasenor, A., Storchak, D. A., Engdahl, E. R., Lee, W. H., & Team, D. E. (2015). ISC-GEM: Global Instrumental Earthquake Catalogue (1900-2009), I. Data collection from early instrumental seismological bulletins. Physics of the Earth and Planetary Interiors, 239, 14-24.

Results