基于GOCI的东海区海域赤潮监测技术应用研究

Study on Application of Red Tide Monitoring Technology in East China Sea Based on GOCI

根据2017年-2018年期间在东海区海域赤潮发生时现场调查所得的赤潮优势浮游藻类、叶绿素a(Chla)、赤潮发生范围与面积估算等资料和采用相应的GOCI遥感数据。研究发现图像均呈现出赤潮面积先增大后减小的变化,虽然1 d内赤潮发生面积有所变化,但与现场调查的赤潮发生范围与面积估算的变化趋势仍基本保持一致。赤潮区域叶绿素a浓度均在1200达到最大值,1 d内赤潮区域叶绿素a浓度的变化是赤潮的优势藻类垂直迁移导致的结果。因此,GOCI可以有效地对东海海域赤潮的短期和长期运动进行监测。

Based on the on-site investigation of red tide occurrence in the East China Sea during the period of 2017-2018,the dominant red tide algae,chlorophyll a(Chla),red tide occurrence range and area estimation and the corresponding GOCI remote sensing data.The results show that the change trend of red tide occurrence range and area estimation in the field investigation is still basically consistent.The concentration of chloroplast a in the red tide region reached a maximum.The change in the concentration of chloroplast a in the red tide region in 1 d was the result of the vertical migration of dominant algae in the red tide,resulting in the red tide.Significant changes occurred within 1d.Therefore,GOCI can effectively monitor the short-term and long-term movements of red tides in the East China Sea.