Seismic Data From Co-Located Seismometers

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Description

Example of seismic data structure. Channels 1-3 are from a broadband Guralp CMG-3T; channels 4-6 are from a short-period Guralp CMG-40T-1. Data were logged using a RefTek RT130 six-channel logger and are in volts. Deconvolution of instrument responses will demonstrate that the two sensors experience the same ground motion (see DeconSeis).

Usage

1

Format

List, consisting of:

JSTR

list of digital seismic data traces

STNS

vector of stations

dir

directory

ifile

original file names

COMPS

Component names, V N E, e.g.

OCOMPS

Old Component names

dt

vector of delta-t, sampling time intervals

KNOTES

Notes for plotting on panels

info

List, detailed information about traces, including

dat

not used

nn

Number of traces

ex

time axis for plotting

pcol

colors for plotting

ok

which traces are okay

wintim

window span time, seconds

ftime

alphanumeric time stamp

pickfile

pickfile, see below

velfile

velocity model list

stafile

station information list including lat, lon, z

aname

source name for loading

UWFILEID

event ID number

The info list consists of:

fn

file name

name

identification name

yr

start year

jd

start julianday

mo

month

dom

day of month

hr

hour

mi

minute

sec

second

msec

millisecond

dt

delta-t

t1

time 1

t2

time 2

off

offset

n1

number of samples

n2

not used

n3

not used

n

number of samples

See Also

DeconSeis

Examples

1
2
3
library(RSEIS)
data(COLOC)
swig(COLOC)