胶东半岛近海海域悬浮泥沙时空变化研究

摘要

利用2003-2009年春季的MODIS影像,基于修正的TASSAN模型反演了胶东半岛近岸海域的悬浮泥沙浓度,利用GIS空间分析工具分析了悬浮泥沙的空间变化特征.结果表明:从2003-2009年研究区内整体含沙量逐年递增；区域含沙量近岸高、外海低；半岛北部毗邻海域含沙量自西向东依次递减,南部海岸带地区无规律性变化.胶东半岛海岸带悬浮泥沙的时空变化特征同海岸线类型及用海类型有密切联系.%Based on a revised Tassan model, concentration of solid suspended matter (SSC) in the coastal zone of Jiaodong Peninsula was retrieved by Moderate-resolution Imaging Spectroradiometer (MODIS) images from 2003 to 2009. The spatial and temporal characteristics of SSC in the study area were also analyzed by GIS spatial analysis tools. The results showed that total SSC values had increased annually, which were generally higher in the near shore areas than that in the open sea. Particularly, the SSC values had decreased from west to east in the northern coastal area of Jiaodong Peninsula, while they had no clear trends in the southern coastal zone. The spatio-temporal changes of SSC in Jiaodong Peninsula were closely related to the coastline types and the sea-use types.