共查询到20条相似文献,搜索用时 93 毫秒
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《压力式波潮仪》海洋行业标准由中国科学院南海海洋研究所负责起草,标准编制组的主要成员王盛安、龙小敏、蔡树群、陈俊昌、姚小桂是近年来从事压力式波潮仪研制、试生产的科研人员。 相似文献
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该检定设备是由国家海洋标准计量中心承担的国家海洋局"八五"重点课题,1995年通过鉴定.设备主要用来检定校准水位计、验潮仪. 相似文献
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压力式验潮仪获取的数据需要经过单位换算、气压改正、密度改正等数据处理才能转化为潮位数据,在数据处理过程中容易因某一环节的疏漏而造成结果不准确。梳理了压力式验潮仪在数据处理过程中应该注意的几个问题,推荐了一种压力式验潮仪数据处理的流程,为压力式验潮仪的正确使用提供了很好的建议。 相似文献
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Study of tide prediction method influenced by nonperiodic factors based on support vector machines 总被引:1,自引:1,他引:0
Harmonic analysis, the traditional tidal forecasting method, cannot take into account the impact of noncyclical factors, and is also based on the BP neural network tidal prediction model which is easily limited by the amount of data. According to the movement of celestial bodies, and considering the insufficient tidal characteristics of historical data which are impacted by the nonperiodic weather, a tidal prediction method is designed based on support vector machine (SVM) to carry out the simulation experiment by using tidal data from Xiamen Tide Gauge, Luchaogang Tide Gauge and Weifang Tide Gauge individually. And the results show that the model satisfactorily carries out the tide prediction which is influenced by noncyclical factors. At the same time, it also proves that the proposed prediction method, which when compared with harmonic analysis method and the BP neural network method, has faster modeling speed, higher prediction precision and stronger generalization ability. 相似文献
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Peter P. Sakalowsky 《Marine Geology》1975,18(1):M35-M43
On the north side of Napatree Beach, short-term changes of the beach-face within the intertidal zone were studied to determine those processes most influential in causing change where nearshore processes are low in magnitude and beach changes are subtle. The data were subjected to multiple linear correlation and stepwise multiple-regression analyses.Tide level accounts for 41% of the explained variation for the relationship between the processes and beach height. Tide level is the only significant element effecting change in the beach profile. Wave height has no influence on changes in beach morphology. Significant results of beach energy associations have been obtained where low-amplitude nearshore processes are present even when beach changes are subtle. 相似文献
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SBY2-1型空气超声波浪仪是基于超声测距原理和海面高度变化时间序列数据分析技术的新型波浪仪。论文详细阐述了该仪器的原理、系统组成和工作流程,并介绍了该仪器的计量检定情况和现场的使用情况。 相似文献
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波浪能是一种清洁、可再生的新型能源,波浪能发电装置在海上作业时会受到变化的风、浪、流载荷作用,需要系泊系统保证其稳性和安全性。以适用于中国南海500 m水深的振荡双浮体式波浪能发电装置为研究对象,运用频域计算与时域计算结合的方法对双浮体及其系泊系统的运动响应和动力载荷进行计算,获取极端海况与工作海况下浮体运动和系泊缆索张力的时历数据。参照BV船级社NR-493规定的海上浮式结构物系泊安全系数规范,对3种系泊方案进行安全校核和对比分析。选定其中一种系泊方案,通过改变系泊系统以及能量转换器(PTO)的参数,探究参数变化对双体波浪能装置运动响应以及系泊系统特性的影响,为类似应用于深水的双体波浪能装置系泊系统的设计提供参考。 相似文献
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This paper provides a linear solution for the Wave Rotor, a wave energy device that comprises two parallel counter rotating cylinders in orbital motion. Theoretical results are obtained for the radiated waves generated by the device, and for its efficiency. Comparisons with earlier measurements of radiated waves show very promising agreement. 相似文献
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A new Local Ocean Tide Model, has been produced for the Exclusive Economic Zone (EEZ) of Malaysia, which incorporates some of the latest TOPEX/POSEIDON data for the years 1992 to 1998. Local tide gauge data are used as a comparison, along with another leading Global Ocean Tide Model, Ori96. The leading diurnal and semidiurnal constituents M2, S2, N2, K1, O1, P1 and Q1 are reproduced using TOPEX/POSEIDON Sea Surface Heights (SSH) in a response analysis type least squares derivation following Munk and Cartwright (1966). 相似文献