秦皇岛海域微微藻褐潮遥感监测方法初探

发布时间：2018-06-07 04:18

  本文选题：遥感 + 微微藻　； 参考：《海洋环境科学》2016年04期

【摘要】：微微藻褐潮在我国是一种新出现的海洋生态灾害。本文针对秦皇岛海域微微藻褐潮高发区,探讨利用卫星遥感技术监测微微藻褐潮的可行性。首先利用MODIS数据反演秦皇岛海域叶绿素a(Chl a)浓度和海面温度(SST)判别水色异常区域,然后通过HJ-1号卫星真彩色影像中褐潮水体与非褐潮水体之间的水色差异,综合判读褐潮,最后以2014年5月秦皇岛海域的卫星遥感数据为实验数据进行实例研究。结果表明,当Chl a≥2.5 mg/m~3和15℃≤SST≤25℃时为海水水色异常阈值,并且褐潮水体在HJ-1号卫星真彩色影像中呈明显的黄绿色,该综合判别法用于微微藻褐潮监测是可行的,这为进一步开展微微藻褐潮业务化监测奠定了基础。
[Abstract]:Picoalgal brown tide is a new marine ecological disaster in China. In this paper, the feasibility of using satellite remote sensing technology to monitor picoalgal brown tide in Qinhuangdao sea area is discussed. Firstly, the MODIS data are used to estimate the concentration of chlorophyll a(Chl a and the sea surface temperature in Qinhuangdao Sea area to judge the abnormal area of water color. Then the color difference between the brown tidal body and the non-brown tidal body in the true color image of HJ-1 satellite is used to comprehensively interpret the brown tide. Finally, the satellite remote sensing data of Qinhuangdao Sea area in May 2014 are taken as experimental data. The results show that when Chl a 鈮，

本文编号：1989734