Measurements of mid-frequency bottom interacting signals in Jinhae bay located on the southern coast of Korea
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 최지웅 | - |
dc.contributor.author | 권혁종 | - |
dc.contributor.author | 손수욱 | - |
dc.contributor.author | 조성호 | - |
dc.contributor.author | 박정수 | - |
dc.contributor.author | 한주영 | - |
dc.date.accessioned | 2020-07-15T20:33:24Z | - |
dc.date.available | 2020-07-15T20:33:24Z | - |
dc.date.created | 2020-02-11 | - |
dc.date.issued | 2016-10-12 | - |
dc.identifier.uri | https://sciwatch.kiost.ac.kr/handle/2020.kiost/24549 | - |
dc.description.abstract | Acoustic bottom interacting measurements were conducted in shallow water (nominal water depth of 60 m) in Jinhae bay, southern coast of Korea, using 4 to 12 kHz CW signals in May 2015 and 2016. The surficial sediment at a site is mainly composed of silty clay with a mean grain size of 8 phi. Since the seafloor is relatively soft, the bottom-bounced path was very weak compared to direct and sea-surface-bounced paths. On the other hand, a strong arrival reflected from the sub-sediment layer was received after the bottom-bounced arrival especially at lower frequencies. The arrival time difference between the arrival reflected from water-sediment interface and that reflected from the second interface is used to estimate the sound speed in the surficial sediment layer. In addition, the bottom loss as a function of grazing angle are estimated using the bottom-bounded path. Finally, the results are compared to the sedimentary structure imaged by chirp sonar survey. [Supported by Agency for Defense Development, Korea]posed of silty clay with a mean grain size of 8 phi. Since the seafloor is relatively soft, the bottom-bounced path was very weak compared to direct and sea-surface-bounced paths. On the other hand, a strong arrival reflected from the sub-sediment layer was received after the bottom-bounced arrival especially at lower frequencies. The arrival time difference between the arrival reflected from water-sediment interface and that reflected from the second interface is used to estimate the sound speed in the surficial sediment layer. In addition, the bottom loss as a function of grazing angle are estimated using the bottom-bounded path. Finally, the results are compared to the sedimentary structure imaged by chirp sonar survey. [Supported by Agency for Defense Development, Korea] | - |
dc.description.uri | 1 | - |
dc.language | English | - |
dc.publisher | the Acoustical Society of America and the Acoustical Society of Japan | - |
dc.relation.isPartOf | 5th Joint Meeting of the Acoustical Society of America and the Acoustical Society of Japan | - |
dc.title | Measurements of mid-frequency bottom interacting signals in Jinhae bay located on the southern coast of Korea | - |
dc.type | Conference | - |
dc.citation.conferencePlace | US | - |
dc.citation.endPage | 617 | - |
dc.citation.startPage | 617 | - |
dc.citation.title | 5th Joint Meeting of the Acoustical Society of America and the Acoustical Society of Japan | - |
dc.contributor.alternativeName | 조성호 | - |
dc.identifier.bibliographicCitation | 5th Joint Meeting of the Acoustical Society of America and the Acoustical Society of Japan, pp.617 | - |
dc.description.journalClass | 1 | - |