Thread: Re: question about rdseed and transfer command

Started: 2011-11-21 14:38:44
Last activity: 2011-11-21 14:38:44
Topics: SAC Help
Arthur Snoke
2011-11-21 14:38:44
Following up on Sheila's response ...

Header variable CONSTANT is not used in the transfer polezero instrument
correction, and as of RDSEED v5.1 is not put in the header. There was a
bug in SAC prior to the just released v101.5 regarding CONSTANT, so best
to get the new version. However, there is a bug in RDSEED v5.1 that may
cause problems working with transfer polezero on some operating systems.
See http://www.iris.edu/software/sac/commands/transfer.html for further
discussion.

Finally, one should included the FREQLIMITIS argument in the TRANSFER call
or one gets excessive correction at long periods. The effect is not as
bad with a correction to velocity as it is with a correction to
dislplacement. The online HELP file discusses this as well.

  • Hi Arthur & Sheila,

    Thank you very much.
    I will download a new version of SAC and include the FREQlimit argument.
    Best regards.

    Yueling

    -----Original Message-----
    From: sac-help-bounces<at>iris.washington.edu on behalf of Arthur Snoke
    Sent: Mon 11/21/2011 5:38 AM
    To: SAC-help Listserv
    Subject: Re: [SAC-HELP] question about rdseed and transfer command

    Following up on Sheila's response ...

    Header variable CONSTANT is not used in the transfer polezero instrument
    correction, and as of RDSEED v5.1 is not put in the header. There was a
    bug in SAC prior to the just released v101.5 regarding CONSTANT, so best
    to get the new version. However, there is a bug in RDSEED v5.1 that may
    cause problems working with transfer polezero on some operating systems.
    See http://www.iris.edu/software/sac/commands/transfer.html for further
    discussion.

    Finally, one should included the FREQLIMITIS argument in the TRANSFER call
    or one gets excessive correction at long periods. The effect is not as
    bad with a correction to velocity as it is with a correction to
    dislplacement. The online HELP file discusses this as well.
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    sac-help mailing list
    sac-help<at>iris.washington.edu
    http://www.iris.washington.edu/mailman/listinfo/sac-help



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