Results 71 to 80 of about 84,808 (184)
Estuary News: Newsletter of the Delaware Estuary Program, Vol. 8, No. 3, Winter 1998
, 1998 Estuary News is published quarterly by the Partnership for the Delaware Estuary, a private, nonprofit organization established in 1996. The Partnership leads collaborative and creative efforts to protect and enhance the Delaware Estuary and its ...
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Numerical simulation of tidal flow field in the Qiantang Estuary bends(钱塘江河口弯道潮流场的数值模拟)
Zhejiang Daxue xuebao. Lixue ban, 2007 钱塘江河口潮流错综复杂，依靠零星的实测潮流资料无法全面描述其流场特征.本文采用Deldt3D模型对钱塘江河口闻家堰至仓前河段的潮流场进行二维数值模拟，着重研究了河口弯道的流场特性.结果表明，河口弯道流场具有跟无潮河流弯道显著不同的特性，如弯道流速向下游递增；涨、落急主流线分歧；涨、落潮流对丁坝工程的响应不同，以及下游弯道水面横比降大于上游弯道.
ZHULi-li(祝丽丽) +4 more
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Estuary News: Newsletter of the Delaware Estuary Program, Vol. 10, No. 3, Spring 2000
, 2000 Estuary News is published quarterly by the Partnership for the Delaware Estuary, a private, nonprofit organization established in 1996. The Partnership leads collaborative and creative efforts to protect and enhance the Delaware Estuary and its ...
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Estuary News: Newsletter of the Delaware Estuary Program, Vol. 9, No. 4, Summer 1999
, 1999 Estuary News is published quarterly by the Partnership for the Delaware Estuary, a private, nonprofit organization established in 1996. The Partnership leads collaborative and creative efforts to protect and enhance the Delaware Estuary and its ...
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Neural network modeling of salinity in Qiantang Estuary(钱塘江河口盐度的神经网络模拟)
Zhejiang Daxue xuebao. Lixue ban, 2011 盐水入侵会对潮汐河口饮用水源地产生影响，河口盐度的合理预测对饮用水源地取水安全和水库泄水抑咸调度有重要意义.以上游流量和下游潮差为控制条件，建立模拟钱塘江河口盐度变化情况的神经网络模型.首先对输入数据作归一化处理，利用上半年观测数据对模型进行反复训练，进而后报下半年盐度.模型输出数据反归一化所得到的结果与实测盐度数据比较，两者较为一致.表明基于河口盐度与上游流量和下游潮差间映射关系所建立的神经网络模型可有效地模拟潮汐河口的盐度变化.利用神经网络方法模拟了上游流量变化条件下钱塘江河口某测站的氯化物浓度 ...
XUDan(许丹) +2 more
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, 2008 Estuary News is published quarterly by the Partnership for the Delaware Estuary, a private, nonprofit organization established in 1996. The Partnership leads collaborative and creative efforts to protect and enhance the Delaware Estuary and its ...
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The computation of flushing time in Qiantang Estuary(钱塘江河口水体冲洗时间的计算)
Zhejiang Daxue xuebao. Lixue ban, 2012 钱塘江河口与长江河口比邻，其水体和物质交换必然受到相当的影响.针对此类情况，以浓度分布受河口上游径流控制的溶解态保守物质作为示踪剂，建立相应的水动力和对流扩散模型，并在此基础上，利用淡水组分法计算了在不同径流量条件下钱塘江河口水体的冲洗时间。结果表明，钱塘江河口水体冲洗时间枯季为146. 4 d、常年平均流量下为136.3 d、洪季为121.8 d，河口水体的冲洗时间随径流量增大而变短。
YAOYan-ming(姚炎明) +2 more
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Estuary News: Newsletter of the Delaware Estuary Program, Vol. 9, No. 3, Spring 1999
, 1999 Estuary News is published quarterly by the Partnership for the Delaware Estuary, a private, nonprofit organization established in 1996. The Partnership leads collaborative and creative efforts to protect and enhance the Delaware Estuary and its ...
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Estuary News: Newsletter of the Delaware Estuary Program, Vol. 9, No. 2, Fall 1998
, 1998 Estuary News is published quarterly by the Partnership for the Delaware Estuary, a private, nonprofit organization established in 1996. The Partnership leads collaborative and creative efforts to protect and enhance the Delaware Estuary and its ...
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Estuary News: Newsletter of the Delaware Estuary Program, Vol. 12, No. 3, Spring 2002
, 2002 Estuary News is published quarterly by the Partnership for the Delaware Estuary, a private, nonprofit organization established in 1996. The Partnership leads collaborative and creative efforts to protect and enhance the Delaware Estuary and its ...
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