Results 61 to 70 of about 268 (156)
Salinity prediction in Qiantang Estuary based on Improved LSTM model
Abstract Investigating saltwater intrusion is vital for optimal use of estuarine water resources. Presently, diverse data-driven models, mainly neural network models, have been employed to predict tidal estuarine salinity. However, the high nonlinearity, randomness, and instability of salinity sequences pose challenges for accurate estuarine ...
Rong Zheng +4 more
openaire +1 more source
Frontiers in Marine ScienceCetacean ecology has been poorly studied in the Shanghai-Zhejiang waters of East China Sea, seriously hindering appropriate local conservation practices.
Jing Yuan +4 more
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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
doaj +1 more source
Frontiers in Earth ScienceThe Yanguan Ancient Seawall at the Qiantang River estuary is a nationally protected cultural heritage and an in-service flood defense. Construction activities, such as vehicle crossings, pose risks of vibration-induced damage to this aging structure.
Wei Lin +9 more
doaj +1 more source
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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Morphodynamics of Sandbar in a Macro-tidal Estuary: A Model Approach
, 2012 This paper studied the development and the underlying physical mechanisms of the large sandbar in Qiantang estuary, China, using an idealized morphodynamic model. The model coupled shallow water equations, cohesive sediment transport and bed level update
Pan, Cunhong, Xie, Dongfeng
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Field study of scour around Bridge piers in the transitional section of the Qiantang River
Ain Shams Engineering JournalWith the rapid development of bridge construction, the safety of bridges under complex hydrological conditions has become an increasingly critical issue. This study investigates the local scour characteristics of bridge piers in the transition section of
Zongyu Li, Rui Li, Bin Chen
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, 2023 During the cofferdam construction of the toe reinforcement project at the Qiantang River Estuary, the scouring of the riverbed at the groin head often led to the collapse of geotube groins due to strong tidal currents.
Xinjie Pang +6 more
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, 2022 The dataset contains phytoplankton species and abundance, depth, temperature, chlorinity, total nitrogen, total phosphorus, ammonia, total organic carbon, suspended particle matter, Secchi depth, daily average flow rate, and flow velocity.
Zhibing Jiang (12855323)
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MicroorganismsEstuarine ecosystems face intense anthropogenic pressures, yet systematic research on how domestic wastewater influences the dissolved organic carbon (DOC) pool via microbial community regulation remains limited.
Yun-Fei Cao +5 more
doaj +1 more source