湖泊科学2008，Vol.20Issue(2)：167-172,6.
芬兰海岸带水域蓝藻水华遥感监测
Cyanobacteria bloom detection and monitoring from satellite observations in the coastal region of Finland
张渊智 1段洪涛2
作者信息
- 1. 香港中文大学太空与地球信息科学研究所,香港沙田
- 2. 赫尔辛基技术大学空间技术实验室,赫尔辛基,02610,芬兰
- 折叠
摘要
Abstract
This study investigates and analyses the possibility of cyanobacteria bollm detection as a case study in the Gulf of Finland and southern Finish lakes.The results show that MODIS data are difficult to be used in cyanobacteria bloom early warning.the main reason is that MODIS data are more suitable for CASEI waters as there are five bands in the spectral region of 400-500nm.However,for CASE Ⅱ waters (estiary,coastal,and lakes),the maxima of reflectance spectra are shifting towards longer wavelengths with increasing turbidity or increasing amount of CDOM.this suggests that the reflectance maximum in coastal waters often occurs in the spectral range of 550-670nm.the two bands at 620nm and 665nm are potentially important bands of detecting cyanobacteria bloom of the coastal waters (and /or lades).the reason is that there are the phycocyanin absorption near 630nm and a reflectance peak near 650nm.In fact,MODIS and MERIS data are unlikely applicable to warn potentially cyanobacteria bloom in its early stages,but able to monitor the already formed blooms.This methodology of satellite-based observations can be applied to detection and monitoring of cyanobacteria bloom in Lake Taihu and coastal regions of China.关键词
蓝藻水华/卫星观测/海岸带水体/内陆湖泊Key words
Cyanobacteria bloom/satellite observations/coastal waters/inland lakes分类
天文与地球科学引用本文复制引用
张渊智,段洪涛..芬兰海岸带水域蓝藻水华遥感监测[J].湖泊科学,2008,20(2):167-172,6.
