Tangshan {PtProcess} | R Documentation |
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)
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.
Examples
data(Tangshan)
print(Tangshan[1:10,])
[Package
PtProcess version 3.1-3
Index]