한국석유지질학회:학술대회논문집
- 한국석유지질학회 2005년도 제12차 학술발표회 초록집
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- Pages.9-16
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- 2005
해저탐사에 적용되는 음파특성
Underwater Acoustic Characteristics and Application to Seabed Survey
- 발행 : 2005.09.01
초록
The electromagnetic (light) waves are limited to penetrate the media, ie, water and sea-bottom layers, due to high energy attenuation, but acoustic (sound) waves play as the good messenger to gather the underwater target information. Therefore the acoustic methods are applied to almost of ocean equipments and technology in terms of in-water and sub-bottom surveys, Generally the sound character is controlled by its frequency. In case that the sound source is low frequency, the penetration is high and the resolution is low. On the other hand, its character is reversed at the high frequency. The common character at the both of light and sound is the energy damping according to the travel distance increase.