Installation and Pre-Certification of CTBT Station IS59, Hawaii
HAWAII UNIV HONOLULU
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The IS59 site survey took place on June 2-16, 1999. The site survey report recommended the installation of IS59 in an exceptionally quiet and well forested area in the Western side of the island of Hawaii. After the September PTS acceptance of the proposed array location, lease and land use agreements were executed and site work began on December 1999. The acceptance test for the integrated data acquisition system took place on May 15-18. On May 25, 2000, IS59 began collecting and archiving pressure data, and since June 1 the CD-1 data frames have been continuously sent to the PIDC. The IS59 array consists of four Chaparral 5 pressure sensors deployed in a tripartite configuration with a 1.9 km aperture. Each sensor feeds into Science Horizons digitizers and authentication boxes, which are powered via ground cables from a central solar panel array. Communication cables run from the concrete vaults that house the equipment to a central site with a 120 ft mast that support the telemetry antennas above the forest line. Continuous pressure, state of health, and meteorological data is sent via radio telemetry to the Infrasound Laboratory, which will act as the central facility that archives data and routes CD frames to the IDC through a VSAT link. This paper outlines the installation and ongoing pre-certification process of the Hawaii station, and shows various signals that have been observed during its operation.
- Test Facilities, Equipment and Methods
- Seismic Detection and Detectors