首页|Comprehensive analysis of the origin of giant jellyfish near Qinhuangdao in summer

Comprehensive analysis of the origin of giant jellyfish near Qinhuangdao in summer

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原文链接
  • 国家科技期刊平台
  • NETL
  • NSTL
  • 万方数据
  • 维普
A massive bloom of the giant jellyfish Nemopilema nomurai occurred in waters off Qinhuangdao,a port city in Hebei Province,in July 2013.However,jellyfish larvae were not found in this location during the previous winter and spring.To determine the possible origin of the giant jellyfish medusa in the Bohai Sea,we developed a backward particle-tracking model and a series of numerical simulations were conducted by using the hydrodynamic,three-dimensional Regional Ocean Modeling System (ROMS) results.The simulated results showed that passive particles,representing jellyfish medusae,released in surface waters at different dates during the summer had consistent trajectories.Particles released at the sea surface on August 1 and 15 could be traced back to the center of the Bohai Sea and to waters between Feiyan Shoal and the new Huanghe (Yellow) River estuary.Particles released on July 1 and 15 could also be traced back to the center of the Bohai Sea and to waters between Feiyan Shoal and only to Zhuangxi tide station.However,none of the particles released in the middle and bottom water layers could be traced back to those areas.Based on the results of the numerical simulations,the distribution characteristics of seafloor sediments,and observational data for giant jellyfish in the region,we suggest that waters between Feiyan Shoal and the new Huanghe River estuary are the likely origin of giant jellyfish observed near Qinhuangdao in summer.

backward particle-trackingBohai SeaLagrangian methodgiant jellyfishnumerical simulation

WU Lingjuan、WU Xiaofen、BAI Tao

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North China Sea Marine Forecasting Center of State Oceanic Administration, Qingdao 266061, China

State Key Laboratory of Satellite Ocean Environment Dynamics, Hangzhou 310012, China

Supported by the National Special Research Fund for Non-Profit Marine SectorOpen Fund of Key Laboratory of Ocean Circulation and Waves,Institute of Oceanology,Chinese Academy of Sciences

201005018KLOCAW1403

2017

海洋湖沼学报(英文版)
中国海洋湖沼学会

海洋湖沼学报(英文版)

CSTPCDCSCD
影响因子：0.386
ISSN：2096-5508
年,卷(期)：2017.35(5)
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