Phuket {PtProcess}R Documentation

Phuket Earthquake and Aftershock Sequence

Description

The Phuket earthquake occurred on 26 December 2004 at 00:58:53.45 GMT. The Phuket data frame contains this event and its aftershock sequence.

Usage

data(Phuket)

Format

This data frame contains the following columns:

latitude
number of degrees north.
longitude
number of degrees east.
depth
depth of event in kilometres.
magnitude
event magnitude rounded to one decimal place.
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 midnight on 1 January 2004.

Details

The Phuket data frame contains those events (1111) from the PDE Catalogue, within the spatial region 89°E–105°E and S–16°N, with magnitude 5 or greater, occurring between midnight on 1 January 2004 and midnight on 1 January 2008 (1461 days later). The tabulated magnitudes are the body wave magnitudes. They are determined by the amplitude of the initial primary wave, and these magnitudes tend to saturate for higher values. Consequently, the tabulated magnitudes for the Phuket Boxing Day event (26 December 2004) and the Sumatra event (28 March 2005) are quite small compared to magnitudes derived on other scales.

Source

The data were extracted from the PDE (Preliminary Determination of Epicentres) catalogue provided by the US Geological Survey (ftp://hazards.cr.usgs.gov/pde/).

Examples

data(Phuket)
print(Phuket[1:10,])

[Package PtProcess version 3.2-1 Index]