杭州湾悬浮泥沙遥感反演与变化动力分析
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摘要
利用2012年5月3日~4日,5月7日~8日实测悬浮泥沙浓度和光谱数据构建反演模型,反演了2012年5月7日杭州湾HJ-1A卫星CCD影像悬浮泥沙浓度,并进行了空间分布分析,结合水深、风速数据等其他实测要素对悬浮泥沙浓度的变化动力进行了分析.结果显示:杭州湾悬浮泥沙的空间分布受潮汐、湾底地形、风速、注入径流和长江口来沙的综合影响,悬浮泥沙浓度随时间变化十分剧烈,潮汐是其变化的主要因素,当风速较大时,风对悬浮泥沙的影响也不容忽略.
With in-situ suspended sediment concentration(SSC)and spectral data,the SSC retrieval model of HJ-1Asatellite CCD was built.The distribution of SSC in Hangzhou Bay was analyzed with the retrieved result on May 7,2012.Using the field SSC measurements,water depth and wind speed data,the dynamic driving force of SSC in Hangzhou Bay was analyzed.The results showed that the distribution of SSC was affected by the combined effects of tides,bathymetry,wind speed,runoff and sediment running out of the Yangtze River estuary.Driven by the tide,the SSC of Hangzhou Bay fluctuated violently with time.In addition,when the wind speed is high,the wind is ignorable as another important driving force for the SSC variation.
With in-situ suspended sediment concentration(SSC)and spectral data,the SSC retrieval model of HJ-1Asatellite CCD was built.The distribution of SSC in Hangzhou Bay was analyzed with the retrieved result on May 7,2012.Using the field SSC measurements,water depth and wind speed data,the dynamic driving force of SSC in Hangzhou Bay was analyzed.The results showed that the distribution of SSC was affected by the combined effects of tides,bathymetry,wind speed,runoff and sediment running out of the Yangtze River estuary.Driven by the tide,the SSC of Hangzhou Bay fluctuated violently with time.In addition,when the wind speed is high,the wind is ignorable as another important driving force for the SSC variation.
引文
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[2]陈莉琼.基于辐射传输机理的鄱阳湖悬浮颗粒物浓度遥感反演研究[D].武汉:武汉大学,2011.
[3]Xiaoling Chen,Yok Shueng Li,Zhigang Liu,et al.Integration of multi-source data for water quality classification in the Pearl River estuary and its adjacent coastal waters of Hong Kong[J].Continental Shelf Research,2004,24(16):1827-1843.
[4]陈军,王保军,孙记红,等.基于Landsat/TM影像提取太湖CDOM浓度空间分布[J].光谱学与光谱分析,2011,31(1):34-38.
[5]潘德炉,马荣华.湖泊水质遥感的几个关键问题[J].湖泊科学,2008,20(2):139-144.
[6]李四海,恽才兴.河口表层悬浮泥沙气象卫星遥感定量模式研究[J].遥感学报,2001,5(2):154-160.
[7]韩震,恽才兴,蒋雪中.悬浮泥沙反射光谱特性实验研究[J].水利学报,2003(12):118-122.
[8]李洪灵,张鹰,姜杰.基于遥感方法反演悬浮泥沙分布[J].水科学进展,2006,17(2):242-245.
[9]樊彦国,孟志河,张磊,等.基于遥感光谱反射率反演黄河口海域Ⅱ类水体悬浮泥沙浓度模型[J].海洋科学,2010,34(9):60-64.
[10]陈晓玲,袁中智,李毓湘,等.基于遥感反演结果的悬浮泥沙时空动态规律研究——以珠江河口及邻近海域为例[J].武汉大学学报:信息版,2005,30(8):677-681.
[11]刘小丽,沈芳,朱伟健,等.MERIS卫星数据定量反演长江河口的悬沙浓度[J].长江流域资源与环境,2009,18(11):1026-1030.
[12]Feng L,Hu C,Chen X,et al.Human induced turbidity changes in Poyang Lake between 2000and 2010:Observations from MODIS[J].Journal of Geophysical Research:Oceans,2012,117(C7):C07006.
[13]L.Miller R,Mckee B A.Using MODIS Terra 250mimagery to map concentrations of total suspended matter in coastal waters[J].Remote Sensing of Environment,2004,93:259-266.
[14]Martinez J M,Guyot J L.Increase in suspended sediment discharge of the Amazon River assessed by monitoring network and satellite data[J].Catena,2009,79(3):257-264.
[15]张伟,陈晓玲,田礼乔,等.鄱阳湖HJ-1A/1B卫星CCD影像TSM浓度时空变化分析[J].华中师范大学学报:自然科学版,2013,47(3):416-420.
[16]王繁,周斌,徐建明,等.杭州湾混浊水体表面光谱测量及光谱特征分析[J].光谱学与光谱分析,2009,29(3):730-734.
[17]王繁,凌在盈,周斌,等.MODIS监测河口水体悬浮泥沙质量浓度的短期变异[J].浙江大学学报:工学版,2009,43(4):755-759.
[18]王繁.河口水体悬浮物固有光学性质及浓度遥感反演模式研究[D].杭州:浙江大学,2008.
[19]刘猛,沈芳,葛建忠,等.静止轨道卫星观测杭州湾悬浮泥沙浓度的动态变化及动力分析[J].泥沙研究,2013(1):7-13.
[20]唐军武,田国良,王小勇,等.水体光谱测量与分析I:水面以上测量法[J].遥感学报,2004,8(1):37-44.