Permitted Component code.

[cellectronic]

Hi All

Sometime ago I am sure I read that there is a list of aceptable component names for EW.

By this I mean , SHZ, SHN, SHE along with BHZ etc identification codes

Can anyone shed some more light on the permitted component names permitted 

Thanks

Best regards .

[Mitch Gold]

Channel naming follows the SEED standard as outlined in Appendix A of the SEED Manual:

  http://www.fdsn.org/pdf/SEEDManual_V2.4_Appendix-A.pdf

The first letter is the band letter and implies a sample rate. For short-period seismic instruments with natural period < 10s (short period), the letter S is used for sample rates between 10-80sps, with E used for sample rates from 80 and below 250 sps. For broadband instruments (natural period >=10s) the band letters B and H are used for those sample rates. There are more letters for higher and lower sample rates.

The second letter is instrument type, where the common letters are H for high-gain instrument, L for low-gain and N for accelerometers. There are many others, for example D for pressure (barometers) or depth gauges, K for temperature, etc.

The third letter of the channel is direction where naming is usually Z/N/E components, though some networks are using orthogonal components Z/1/2 where the orientation is specified in the metadata.

Regards,

--Mitch

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Mitch Gold

Mitc...@isti.com

Instrumental Software Technologies, Inc.

518-602-0001 x222