Earthquake Data
The data in the file earthquake.dat
is a record of earthquakes recorded by the USGS for the period
from the end of 1996 to the middle of 1998. The following variables
are included:
- The date of the earthquake in the form yy/mm/dd.
- The time of the earthquake (Greenich Mean Time) in the form hh:mm:ss
- The latitude, in degrees, of the center of the quake
- The longitude, in degrees, of the center of the quake
- The depth, in kilometers, of the earthquake activity
- The magnitude, reported as a number, followed by two letters which
indicate the scale used to measure the quake.
- The quality of the location information, ranging from A(best) to D(worst).
This field may also contain a blank!!
- A comments field, truncated to 28 characters, generally containing
a string (with embedded blanks) describing the location of the quake.
Source: http://geology.usgs.gov/quake.shtml