RSEIS (version 4.1-1)

VELOCITY.SEISN: Velocity Seismogram

Description

Removes seismic instrument response and corrects for sensitivity of seismoc instrument, returning units of m/s rather than volts.

Usage

VELOCITY.SEISN(TH, sel = 1:length(TH$JSTR), inst = 1,
Kal = Kal,waterlevel = 1e-08,  FILT = list(ON = FALSE,
fl = 1/30, fh = 7, type = "HP", proto = "BU"))

Value

Same as input list with new traces representing velocity versus volts

Arguments

TH

list structure of seismic traces

sel

select which tracesin list to deconvolve

inst

index to instrument in Kal list for calibration and instrument response

Kal

list of instrument responses

waterlevel

waterlevel for low frequency division

FILT

filter output, after instrumentation

Author

Jonathan M. Lees<[e-mail]>

Details

Instrument responses are lists of poles and zeros for each instrument defined.

See Also

DISPLACE.SEISN, deconinst

Examples

if (FALSE) {
Kal  <-  PreSet.Instr()
Majorevent   <-  250+8/24+2250/(24*3600)

at1  <-  Majorevent - 1/24
at2  <-  Majorevent + 1/24


TH  <-   Mine.seis(at1, at2, DB99, NULL, NULL , kind = 1, Iendian=1,
BIGLONG=FALSE, CHOP=TRUE, verbose=FALSE)
inst  <-  rep(0, length(TH$STNS))
inst[TH$COMPS %in% c("V", "N", "E")]  <-  1
inst[TH$STNS=="krm2" &  TH$COMPS %in% c("V", "N", "E")]  <-  2
inst[TH$STNS=="krm0" &  TH$COMPS %in% c("V", "N", "E")]  <-  2

VH  <-     VELOCITY.SEISN(TH, sel = 1:length(TH$JSTR), inst = 1,
Kal = Kal, FILT = list(ON = FALSE, fl = 1/30, fh = 7,
type = "HP", proto = "BU"))


}