3.1.11.10. PeerNGAMotion TimeSeries

This command is used to construct a TimeSeries object which, similar to a Path TimeSeries, the load factor obtained is dependent on a series of points obtained from a file. The difference is that the file is obtained from the Peer NGA strong motion database using an internet connection.

timeSeries PeerNGAMotion $tag $eqMotion $factor <-dT $dT> <-NPTS $nPts>

Argument	Type	Description
$tag	integer	unique tag among TimeSeries objects
$eqMotion	string	the PEER NGA name of the motion (a string containing the earthquake name, station & dirn)
$factor	float	factor to be applied to the data points, if accel record type you want to specify G
$dT	float	optional, if provided will set the variable nPts equal to number of data points found in record
$nPts	integer	optional, if provided will set the variable dT equal to time interval between points in the record

Note

• If the time in the domain does not match a data point in record, linear interpolation is performed between nearest points in record.

• The command can be used with the results obtained from the searchPeerNGA command (hence the craziness of the $eqMotion names).

• An internet connection is required to run command.

Example:

To create 2 time series for two horizontal motions recorded for the Borrego Mtn 1968-04-09 earthquake recorded at the USGS 117 El Centro Array #9 station

1. Tcl Code

timeSeries PeerNGAMotion 1 /BORREGO/A-ELC180 $G -dT dt -NPTS nPts
timeSeries PeerNGAMotion 2 /BORREGO/A-ELC270 $G

2. Python Code

Code Developed by: fmk