Deelen Infrasound Array: On the Detection and Identification of Infrasound.

摘要

The Seismology Division of the Royal Netherlands Meteorological Institute (KNMI) operates since 1999 the Deelen Infrasound Array. DIA is the outcome of a KNTP (Kortlopend National Technologie Project) N98/32 'Sonic Boom Detection Technique' executed for the Royal Netherlands Airforce (KLu). The design of DIA is based on the following objectives: (1) develop a technique to record sonic booms; (2) demonstrate the technique by installing an array of pressure sensors on Airborne base Deelen. (3) enable the KNMI to assist the KLu in handling damage claims from sonic booms and to provide public information. DIA also acts as experimental array Comprehensive Nuclear-Test-Ban Treaty (CTBT) related issues. The KNMI micro-barometer was developed to detect infrasound generated by amongst other sonic booms. A differential pressure sensor is the infrasound sensitive element of the micro-barometer. Porous hoses are coupled to each instrument to reduce wind noise. Doing so, pressure variations between 0.002 and 30 Hz can be measured. Sixteen micro-barometers are installed on Airforce base Deelen. Sampling the atmosphere in a homogeneous way is the main criterion for the array design. This report describes the research and development done to realize DIA. Furthermore, the work done in infrasound is described.