How to install seismometers
Methods of Installing United States National Seismographic Network
(USNSN) Stations--A Constructions Manual.
By John McMillan: Open-File Report 02-0144.
Timing. The International Earth Rotation
Service (IERS)
maintains the timing and determines the introduction of leap seconds
as one of their Earth Orientation Parameters (EOP) services.
Other information
IDA MK& Data logger problem (10-07-2001). See
details
Change in Data Quality Identifier in DMC data (31-05-2002). See
details.
