| LEE Hyungbeen,CHO Sungho,KIM Woongseo,KANG Donhyug. 2013. The diel vertical migration of the sound-scattering layer in the Yellow Sea Bottom Cold Water of the southeastern Yellow Sea：focus on its relationship with a temperature structure. Acta Oceanologica Sinica, 32(9):44－49 |
| The diel vertical migration of the sound-scattering layer in the Yellow Sea Bottom Cold Water of the southeastern Yellow Sea：focus on its relationship with a temperature structure |
| The diel vertical migration of the sound-scattering layer in the Yellow Sea Bottom Cold Water of the southeastern Yellow Sea：focus on its relationship with a temperature structure |
| Received:May 18, 2012 Revised:June 03, 2013 |
| DOI：10.1007/s13131-013-0351-z |
| Key words:diel vertical migration sound-scattering layer temperature structure typhoon Yellow Sea Bottom Cold Water |
| 中文关键词: diel vertical migration sound-scattering layer temperature structure typhoon Yellow Sea Bottom Cold Water |
| 基金项目:The China-Korea cooperative project “The study on the impact of the Yellow Sea Cold Water Mass to the ecosystem” under contract No. PE99165;promoted by the Korea Institute of Ocean Science and Technology. |
| Author Name | Affiliation | E-mail | | LEE Hyungbeen | Maritime Security Research Center, Korea Institute of Ocean Science & Technology, Ansan, P.O. Box 29, 425-600, Republic of Korea | | | CHO Sungho | Maritime Security Research Center, Korea Institute of Ocean Science & Technology, Ansan, P.O. Box 29, 425-600, Republic of Korea | | | KIM Woongseo | Deep-sea and Seabed Resources Research Division, Korea Institute of Ocean Science & Technology, Ansan, P.O. Box 29, 425-600, Republic of Korea | | | KANG Donhyug | Maritime Security Research Center, Korea Institute of Ocean Science & Technology, Ansan, P.O. Box 29, 425-600, Republic of Korea | dhkang@kiost.ac |
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| Abstract: |
| Using the hydroacousticmethod with a 200 kHz scientific echo sounding system, the diel vertical migration (DVM)of the sound-scatteringlayer (SSL) in the Yellow Sea Bottom Cold Water (YSBCW) of the southeastern Yellow Sea was studied in April (spring) and August (summer) of 2010 and 2011. For each survey, 13-27 hours of acoustic data were continuously collected at a stationary station. The acoustic volume scattering strength (Sv) data were analyzed with temperature profile data. In the spring of both 2010 and 2011, the SSL clearly showed the vertical migration through out the entire water column,moving from the surface layer at night to near the bottom during the day. Conductivity, temperature, and depth data indicated that the entire water column was well mixed with low temperature of about 8℃. However, the SSL showed different patterns in the summers of 2010 and 2011. In the summer of 2010 (≈28℃ at the surface), the SSL migrated to near the bottom during the day, but there were two SSLs above and below the thermocline at depth of 10-30 m at night. In the summer of 2011 (≈20℃ at the surface), the SSL extended throughout the entire water column at night, possibly owing to an abrupt change in sea weather conditions caused by the passage of a Typhoon Muifa over the study area. It was concluded that the DVM patterns in summer in the YSBCW area may be greatly influenced by a strengthened or weakened thermocline. |
| 中文摘要: |
| Using the hydroacousticmethod with a 200 kHz scientific echo sounding system, the diel vertical migration (DVM)of the sound-scatteringlayer (SSL) in the Yellow Sea Bottom Cold Water (YSBCW) of the southeastern Yellow Sea was studied in April (spring) and August (summer) of 2010 and 2011. For each survey, 13-27 hours of acoustic data were continuously collected at a stationary station. The acoustic volume scattering strength (Sv) data were analyzed with temperature profile data. In the spring of both 2010 and 2011, the SSL clearly showed the vertical migration through out the entire water column,moving from the surface layer at night to near the bottom during the day. Conductivity, temperature, and depth data indicated that the entire water column was well mixed with low temperature of about 8℃. However, the SSL showed different patterns in the summers of 2010 and 2011. In the summer of 2010 (≈28℃ at the surface), the SSL migrated to near the bottom during the day, but there were two SSLs above and below the thermocline at depth of 10-30 m at night. In the summer of 2011 (≈20℃ at the surface), the SSL extended throughout the entire water column at night, possibly owing to an abrupt change in sea weather conditions caused by the passage of a Typhoon Muifa over the study area. It was concluded that the DVM patterns in summer in the YSBCW area may be greatly influenced by a strengthened or weakened thermocline. |
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