naa a22 4500 510754791 CHVBK 20180411083118.0 cr unu---uuuuu 180411e20131101xx s 000 0 eng 10.1007/s13131-013-0371-8 doi (NATIONALLICENCE)springer-10.1007/s13131-013-0371-8 The diel vertical migration of sound scatterers observed by an acoustic Doppler current profiler in the Luzon Strait from July 2009 to April 2011 [Elektronische Daten] [Chenghao Yang, Guanghong Liao, Yaochu Yuan, Hong Chen, Xiaohua Zhu] Acoustic Doppler current profiler (ADCP) receives echoes from sound scatterers, then their speed is calculated by the Doppler effect. In the open ocean, most of these backscatterers are from the plankton. The sound scatterers descend down to depth at around dawn, their mean speed is 2.9 cm/s, then they ascend up to the surface layer at around dusk with a mean speed of 2.1 cm/s, in the Luzon Strait. The descending speed is faster, which suggests that this zooplankton population may accelerate its downward migration under the action of the gravity. The vertical distribution of a mean volume backscattering strength (MVBS) in the nighttime has two peaks, which locate near the upper and lower boundary layers of halocline, respectively. However, the backscatterers only aggregate near the surface layer in the daytime. The diel vertical migration (DVM) of sound scatterers has several characteristic patterns, it is stronger in summer, but weaker in winter, and the maximum peak occurs in September. The DVM occurrence is synchronous with the seawater temperature increasing at around dawn and dusk, it may affect the ocean mixing and water stratification. The Chinese Society of Oceanography and Springer-Verlag Berlin Heidelberg, 2013 diel vertical migration nationallicence acoustic Doppler current profiler nationallicence mean volume backscattering strength nationallicence Luzon Strait nationallicence water stratification nationallicence Yang Chenghao State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, State Oceanic Administration, 310012, Hangzhou, China aut Liao Guanghong State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, State Oceanic Administration, 310012, Hangzhou, China aut Yuan Yaochu State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, State Oceanic Administration, 310012, Hangzhou, China aut Chen Hong State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, State Oceanic Administration, 310012, Hangzhou, China aut Zhu Xiaohua State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, State Oceanic Administration, 310012, Hangzhou, China aut Acta Oceanologica Sinica Springer Berlin Heidelberg 32/11(2013-11-01), 1-9 0253-505X 32:11<1 2013 32 13131 https://doi.org/10.1007/s13131-013-0371-8 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s13131-013-0371-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Yang Chenghao State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, State Oceanic Administration, 310012, Hangzhou, China aut NATIONALLICENCE 700 1- Liao Guanghong State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, State Oceanic Administration, 310012, Hangzhou, China aut NATIONALLICENCE 700 1- Yuan Yaochu State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, State Oceanic Administration, 310012, Hangzhou, China aut NATIONALLICENCE 700 1- Chen Hong State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, State Oceanic Administration, 310012, Hangzhou, China aut NATIONALLICENCE 700 1- Zhu Xiaohua State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, State Oceanic Administration, 310012, Hangzhou, China aut NATIONALLICENCE 773 0- Acta Oceanologica Sinica Springer Berlin Heidelberg 32/11(2013-11-01), 1-9 0253-505X 32:11<1 2013 32 13131 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer