R: Event Detection

ETECTG {RSEIS} | R Documentation

## Event Detection

### Description

Event Detection for a seismic section

### Usage

    ETECTG(GH, sel = sel, FRWD = 8, BKWD = 8, sbef = 1,
    saft = 6, DFRWD = 0.5, DBKWD = 0.5, thresh = 2,
    Tthresh2 = 7, stretch = 1000, flo = 0.1, fhi = 5,
     PLOT = FALSE, Kmin = 7, perc = 0.05, kind = 1, DOARAIC = FALSE)

### Arguments

`GH` | Seismic Structure
`sel` | select traces
`FRWD` | forward window, s
`BKWD` | backward window
`sbef` | seconds before
`saft` | seconds after
`DFRWD` | seconds before
`DBKWD` | seconds after
`thresh` | threshold 1
`Tthresh2` | threshold 2
`stretch` | stretch factor
`flo` | low frequency for BP filter
`fhi` | low frequency for BP filter
`PLOT` | logical, TRUE=plot diagnostics
`Kmin` | min number of picks per window
`perc` | percentage of Kmin allowed
`kind` | kind of picking
`DOARAIC` | TRUE=do auto-regressive AIC method

### Details

Very complicated picking routine - designed for volcanic regions with emergent arrivals. Works with lots of tuning.

### Value

`sel` | input selection
`JJ` | index
`PPTIM` | p-arrivals
`PP` | all arrivals

### Author(s)

Jonathan M. Lees<jonathan.lees.edu>

[Package RSEIS version 3.7-4 Index]