Infrasonic Signals Detected by the Kona Array, Hawaii
Abstract
International Monitoring System (IMS) infrasound array IS59, also known as the KONA array, has been operating since May 25, 2000, and is scheduled for certification into the IMS in September of 2001. A catalog of observed infrasound signals is routinely produced for IS59 and includes Phase, Date and Time UT, Azimuth, Slowness, and Remark fields, as well as Amplitude in millipascals after February 20, 2001. Selected events have been characterized and tentative source identifications made through a combination of field inspections, collaborations with government personnel or agents, and improvements in data analysis. Most of the events have been observed only at KONA, but some have been recorded by two or more arrays. Sources for infrasonic events recorded at KONA include aircraft noise from nearby Keahole International Airport, surf impact, earthquakes, offshore activities, severe weather, and meteors. Other unidentified local signals are also catalogued. Phase names based on source identification have been devised to aid in classification. From June 19, 2000, to July 2, 2001, 1280 events were recorded, of which 0.31% were confirmed to be telesonic. Approximately 31% were surf-related, 19% associated with weather, and 16% associated with aircraft. More than 59% of recorded events were identified as local.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 2001
- Accession Number
- ADA525548
Entities
People
- Claus H. Hetzer
- Milton A. Garces
Organizations
- University of Hawaiʻi at Mānoa