Econ. Environ. Geol. 2006; 39(4): 495-505

Published online August 31, 2006

© THE KOREAN SOCIETY OF ECONOMIC AND ENVIRONMENTAL GEOLOGY

Geophysical Study Through Infrasound Observation

Il-Young Che* and Jeong-Soo Jeon

Earthquake Research Center, Korea Institute of Geoscience and Mineral Resources, Daejeon 305-350, Korea

Correspondence to :

Il-Young Che

che10@kigam.re.kr

Received: June 12, 2006; Accepted: August 17, 2006

Abstract

Atmospheric infrasound is defined as low frequency inaudible sound waves generated from natural phenomena and human activities. One property of long-distance travelling of infrasound makes it possible to detect the wave propagated from remote sound sources and to understand many geophysical phenomena generating it. Recently, advanced global infrasound sensor arrays are being deployed to monitor the clandestine nuclear test and to study geophysical phenomena in the world. In Korea, five seismo-acoustic arrays consisting of co-located seismometer and micro-barometer have been operated to discriminate the artificial explosions from the natural earthquakes in and around the Korean Peninsula. In addition to the discrimination purpose, these arrays also record distinct infrasonic
signals from natural phenomena on global scale such as large earthquake, bolide event, volcanic explosion, typhoon, and so on. As a new frontier in monitoring the earth, infrasound is being applied to understand various phenomena in and above the earth's surface.

Keywords infrasound, seismo-acoustic array, artificial explosion, earthquake

Article

Econ. Environ. Geol. 2006; 39(4): 495-505

Published online August 31, 2006

Copyright © THE KOREAN SOCIETY OF ECONOMIC AND ENVIRONMENTAL GEOLOGY.

Geophysical Study Through Infrasound Observation

Il-Young Che* and Jeong-Soo Jeon

Earthquake Research Center, Korea Institute of Geoscience and Mineral Resources, Daejeon 305-350, Korea

Correspondence to:

Il-Young Che

che10@kigam.re.kr

Received: June 12, 2006; Accepted: August 17, 2006

Abstract

Atmospheric infrasound is defined as low frequency inaudible sound waves generated from natural phenomena and human activities. One property of long-distance travelling of infrasound makes it possible to detect the wave propagated from remote sound sources and to understand many geophysical phenomena generating it. Recently, advanced global infrasound sensor arrays are being deployed to monitor the clandestine nuclear test and to study geophysical phenomena in the world. In Korea, five seismo-acoustic arrays consisting of co-located seismometer and micro-barometer have been operated to discriminate the artificial explosions from the natural earthquakes in and around the Korean Peninsula. In addition to the discrimination purpose, these arrays also record distinct infrasonic
signals from natural phenomena on global scale such as large earthquake, bolide event, volcanic explosion, typhoon, and so on. As a new frontier in monitoring the earth, infrasound is being applied to understand various phenomena in and above the earth's surface.

Keywords infrasound, seismo-acoustic array, artificial explosion, earthquake

    KSEEG
    Jun 30, 2024 Vol.57 No.3, pp. 281~352

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