李斌, 燕琴, 张丽, 梁勇. 长江中游洪涝灾害特征的MODIS时序监测与分析[J]. 武汉大学学报 ( 信息科学版), 2013, 38(7): 789-793.
引用本文: 李斌, 燕琴, 张丽, 梁勇. 长江中游洪涝灾害特征的MODIS时序监测与分析[J]. 武汉大学学报 ( 信息科学版), 2013, 38(7): 789-793.
LI Bin, YAN Qin, ZHANG Li, LIANG Yong. Flood Monitoring and Analysis over the Middle Reaches of Yangtze River Basin with MODIS Time-Series Imagery[J]. Geomatics and Information Science of Wuhan University, 2013, 38(7): 789-793.
Citation: LI Bin, YAN Qin, ZHANG Li, LIANG Yong. Flood Monitoring and Analysis over the Middle Reaches of Yangtze River Basin with MODIS Time-Series Imagery[J]. Geomatics and Information Science of Wuhan University, 2013, 38(7): 789-793.

长江中游洪涝灾害特征的MODIS时序监测与分析

Flood Monitoring and Analysis over the Middle Reaches of Yangtze River Basin with MODIS Time-Series Imagery

  • 摘要: 通过250m分辨率的MODIS时序数据,监测自2000年以来长江中游的鄱阳湖和洞庭湖地区的洪水淹没范围及其动态变化。基于同期TM数据对MODIS监测结果进行验证,精度为94.6%,达到了理想的洪灾淹没范围提取结果。监测结果显示,2010年鄱阳湖的淹没面积相对较大,而东洞庭湖和西南洞庭湖在2002年的淹没面积相对较大。三湖在一次淹没波动持续时间上最长可达5~6个月;洪涝灾害发生时间大多集中在4~11月份,其中以6~8月份最为频繁,夏季是该地区洪涝灾害的高发期。

     

    Abstract: Remote sensing monitoring of submerged areas is a direct and effective method to measure flooding and directly reflects the severity of a flood disaster.In this study,the authors monitored the submerged area and dynamic changes of Dongting Lake and Poyang Lake over the middle reaches of Yangtze River with 250 m MODIS data during a flooding event.The results were verified with TM images and showed an accuracy of 94.6%.Further,the results showed that the submerged area of the Poyang Lake in 2010 was larger than other years,while the submerged area of east Dongting Lake and southwest Dongting Lake in 2002 was larger than other years.The longest duration of fluctuation was 5-6 months for the three lakes.Generally,flooding occurred during April and November but most frequently occurred from June to August.Summer is the season with the highest frequency of flood disasters in the middle reaches of the Yangtze River Basin.

     

/

返回文章
返回