摘要
该文在对长江河口拦门沙百余年来冲淤变化过程分析的基础上 ,利用GIS工具 ,计算了长江口拦门沙自 184 2年以来的冲淤量 ,其结果表明 ,15 0余年来 ,长江口拦门沙地区虽存在时冲时淤的变化规律 ,但总体上是处于不断淤积之中 ,在计算区域内净淤积总量达 4 0 .93× 10 8t ,最大年份高达约 1× 10 8t/a。这些可加深对河口拦门沙河段形成和沉积过程的认识 ,同时也可为长江河口深水航道治理工程提供科学依据。
Based on the analysis on chart data since 1842 in the Mouth Bar Area of Changjiang Estuary, the amount of sediment erosion accumulation is calculated with the help of GIS applied software. It showed a tendency to deposit in last 150 years though there were sediment erosion sometimes. The results can help to deepen the understanding of Mouth Bar's formation, and it also provides a scientific basis for the regulation works of deep waterway in the Changjiang Estuary.
出处
《华东师范大学学报（自然科学版）》
CAS
CSCD
北大核心
2002年第2期73-80,共8页
Journal of East China Normal University(Natural Science)
基金
国家自然科学重点基金 (49736 2 2 0 )
教育部博士学科点专项科研基金 (2 0 0 0 0 2 6 914)
