Tangshan: Tangshan Earthquake and Aftershock Sequence
Description
The Tangshan earthquake occurred on 28 July 1976 at 03:42:53, with a magnitude of 7.9. The Tangshan data frame contains those events (455) from the Beijing Catalogue, within 100 km of the epicentre and with magnitude 4 or greater, from the beginning of 1974 to the end of 1984.
Usage
data(Tangshan)
Arguments
Format
This data frame contains the following columns:
latitude
number of degrees north.
longitude
number of degrees east.
magnitude
number of magnitude units above 4.
year
year of event (numeric vector).
month
month of event, 1 ... 12 (numeric vector).
day
day of event, 1 ... 31 (numeric vector).
hour
hour of event, 0 ... 23 (numeric vector).
minute
minute of event, 0 ... 59 (numeric vector).
second
second of event, 0 ... 59 (numeric vector).
time
number of days (and fractions) from the beginning of 1974.
Source
These data originate from the Beijing Catalogue which is administered by the China Seismological Bureau, Beijing.