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Research on the distribution of sound scattering layer in the middle and high latitudes ocean of the Northern Hemisphere in autumn
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Erhui Huang1, Yanming Yang1, Hongtao Wen1, Hongtao Zhou1
Haiyang Xuebao | 2019, 41(7) : 52 - 64
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Haiyang Xuebao | 2019, 41(7): 52-64
• Physical Oceanography, Marine Meteorology and Marine Physics •
Research on the distribution of sound scattering layer in the middle and high latitudes ocean of the Northern Hemisphere in autumn
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Erhui Huang1, Yanming Yang1, Hongtao Wen1, Hongtao Zhou1
Affiliations
  • 1 Ocean Acoustic and Remote Sensing Laboratory, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China
Published: 2019-07-25 doi: 10.3969/j.issn.0253-4193.2019.07.005
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The shipboard ADCP (Acoustic Doppler Current Profilers) backscatter intensity data in the Eighth Arctic Science Expedition are analyzed for the temporal and spatial characteristics of the sound scattering layer (SSL), by combining the solar altitude, the sea ice concentration and the in-situ data of the water environment parameters. The results show that the higher the latitude is, the shorter the time of the SSL is on the sea surface. Even during the period of polar day and all covered by sea ice, the migration amplitude and backscattering intensity of the SSL are weakened, but they are still affected by the change of the solar elevation, and there is a strong temporal correlation between them and solar altitude angle. In the middle section of the Arctic, the migration of the SSL is weak, and there is no obvious SSL observed, the reason may be that the concentration of zooplanktons and fishes are relatively lower and the migration is weak, which is beyond the accuracy range of ADCP used in this paper. ADCP data in the back and forth from the Okhotsk Sea to the southwest of the Bering Sea, show that there are two SSLs, the shallower depth and the greater backscatter intensity, but their vertical migration time is synchronized, and the spacing between them is gradually reduced and combined as the latitude increases, it may be caused by marine organisms with different life habit.

middle and high latitudes  /  sound scattering layer  /  solar altitude angle  /  backscatter intensity  /  vertical migration
Erhui Huang, Yanming Yang, Hongtao Wen, Hongtao Zhou. Research on the distribution of sound scattering layer in the middle and high latitudes ocean of the Northern Hemisphere in autumn[J]. Haiyang Xuebao, 2019 , 41 (7) : 52 -64 . DOI: 10.3969/j.issn.0253-4193.2019.07.005
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doi: 10.3969/j.issn.0253-4193.2019.07.005
  • Receive Date：2018-07-26
  • Online Date：2026-04-02
  • Published：2019-07-25
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  • Received：2018-07-26
  • Revised：2018-10-24
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    1 Ocean Acoustic and Remote Sensing Laboratory, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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