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Channel naming conventions

by Wayne Crawford - 1 April 2014

The OBS channels use a 3-character code following the SEED 2.4 specifation.

First letter

sps corner period Name
B 10-80 >= 10s Broad Band
S 10-80 < 10s Short Period
H 80-250 >= 10s High Broad Band
E 80-250 < 10s Extremely Short Period

Second and third letters

HZ= seismometer vertical

H1= seismometer horizontal [1]

H2 = seismometer horizontal [1]

DH=hydrophone or differential pressure gauge

[1] H1 is 90° counter-clockwise from H2 (viewed from above)

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