Hawaiian Volcano Observatory Seismic Data, January to December 2006

The Hawaiian Volcano Observatory (HVO) summary presents seismic data gathered
during the year. The seismic summary is offered without interpretation as a
source of preliminary data. It is complete in the sense that most data for
events of M≥1.5 routinely gathered by the Observatory are included.

The HVO summaries have been published in various forms since 1956. Summaries
prior to 1974 were issued quarterly, but cost, convenience of preparation and
distribution, and the large quantities of data dictated an annual publication
beginning with Summary 74 for the year 1974. Summary 86 (the introduction of
CUSP at HVO) includes a description of the seismic instrumentation,
calibration, and processing used in recent years. Beginning with 2004,
summaries are simply identified by the year, rather than Summary number. The
present summary includes background information on the seismic network and
processing to allow use of the data and to provide an understanding of how they
were gathered.

A report by Klein and Koyanagi (1980) tabulates instrumentation, calibration,
and recording history of each seismic station in the network. It is designed as
a reference for users of seismograms and phase data and includes and augments
the information in the station table in this summary.

[Summary provided by the USGS.]