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本文基于2007—2018年Landsat系列遥感卫星数据开展田湾核电站温排水时空变化特征及其影响分析。采用辐射传输方程算法和劈窗算法对核电站周围海域的海表温度进行反演,通过星星匹配对反演温度的精度进行验证。匹配验证结果表明,反演的Landsat海表温度与MODIS海表温度产品具有较好的一致性,决定系数达到0.91。基于研究海域温度反演结果分析了核电站温排水面积的季节变化、年际变化和潮周期内变化特征,并且分析了潮汐与风场对温排水扩散的影响。结果表明,核电站周边海域各季节的温升区面积存在明显差异,春季最大,可达秋季的7倍;2007—2018年,随着装机容量的扩大,温排水面积不断扩大,2018年达到峰值,瞬时最大面积可达101.7 km2;潮汐对温排水扩散有影响,涨憩时刻温升区面积较落憩时刻大;有利风会促进温排水扩散,但影响有限。 相似文献
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海气热通量对海气的热量交换具有重要的影响,能够很大程度地影响局部海域的热量扩散情况。在滨海电厂所在海域,由于温排水与环境水域温差引起的斜压效应,将对附近海域温度分布、局部环流结构变化等海洋生态环境造成影响,因此现有的数学模型要考虑海气热通量才能更加准确地模拟温排水造成的温升场。本文在了解田湾核电站温排水特点和附近海域潮流特征的基础上,应用FVCOM数值模式,采用《物理海洋学》中的海表面热通量计算方法,建立了田湾核电站附近海域温排水数值模型,对温排水造成的温升进行了模拟。模式考虑斜压效应,在排水口考虑了温排水的叠加效应,通过与实测资料比对表明:该文建立的田湾核电站温排水模型可以较好地模拟该海域的温度变化和温排水造成的温升变化。 相似文献
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随着滨海电厂的迅速发展,电厂温排水排放对邻近海域的生态环境影响越来越受到人们的关注。文章概括了青岛电厂温排水数值模拟现状、温排水排放对海洋生态环境影响方面的一些研究成果,并提出了存在的问题和今后应关注的研究方向。 相似文献
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为了清晰了解温排水入海后的时空输移路径和温升范围,及其对海洋环境的影响,以湛江湾内的某电厂为例,应用ECOMSED海洋模式计算其温排水的时空输移路径及温升范围,并结合野外生态调查结果评价其对湛江湾内海洋生态环境的影响.结果表明：某电厂温排水导致湛江湾水体温升大于4℃、2℃、1℃的面积分别为0.110、0.480、1.629 km2,相对于约190 km2的湛江湾海域,影响面积很小;夏季浮游植物丰度随温度升高的变化率分别为-8.534%、-3.573%、-1.613%,浮游动物丰度随温度升高的变化率分别为-4.964%、-1.896%、-0.802%,温排水对浮游动、植物的影响夏季较冬季显著.某电厂温排水对湛江湾内海洋生态环境的影响即使在高温季节也不明显. 相似文献
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营口市位于辽宁省的中南部,面对渤海的辽东湾,背依鞍山市平原丘陵,东邻辽东崇山峻岭,西接盘锦市沿海平原,有辽河蜿蜒人海,海岸线绵延曲折。由于受海洋、河流的影响．营口市四季分明,气候宜人,蕴藏着丰富的滨海旅游资源,海蚀景观、地质珍迹、人文景观等资源各显异彩;尤其是海水浴场,条件极为优越,与国际上一流的海水浴场相比．毫不逊色,在某些特征上还稍胜一筹。 相似文献
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A. P. Tolstosheev 《Physical Oceanography》2009,19(6):358-365
A method for the estimation of the results of reconstruction of the trajectories of drifting buoys is proposed. It is based
on the comparison of the estimates of power spectral densities for the components of current velocity computed according to
three data sets: the data set of the coordinates of a drifting buoy with a built-in GPS receiver, the data set of coordinates formed on the basis of the first set but with data missing and observational errors
corresponding to the actual trajectory measurements by the Argos satellite location and data collection system by the Doppler method, and the data set of coordinates obtained as a result
of interpolation of the second set. As an example, we consider the procedure of realization of the proposed method and demonstrate
the efficiency of its application for the improvement of the reliability of reconstruction of the trajectories of drifting
buoys. 相似文献
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An attempt has been made to estimate the fishery potentials of the EEZ of India on the basis of data on primary and secondary production. The total column primary production and zooplankton production have been calculated to be 265·9 and 9 million tonnes of carbon per year, respectively. From these values the fishery potential has been estimated as 2·5 million tonnes per year. To this, if we add the estimated demersal fish catch, being 1·2 million tonnes per year, the total potential yield comes to 3·7 million tonnes per year. Since the present average total catch is about 1·6 million tonnes in a year, the fish catch could be doubled. 相似文献
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1992年，联合国21世纪议程提出了综合管理的概念，并认为它是海岸管理的最重要目标，而海岸管理的目的就是改进业已存在的管理实践的效率和效果。在21世纪议程的实施过程中，沿海国家面临着巨大的困难，即：为了使综合管理在实践中具有可操作性而建立适合的政府机构。韩国正是在国家范围和次一级区域进行这项工作的实验场所。这项工作的最重要成就是在1996年成立了具有综合协调各涉海部门职能的韩国海洋事务与渔业部（MOMAF）。这篇文章的内容主要来自于这些观察，即韩国政府为建立海岸带综合机制而进行了各种努力，特别是1992年联合国环发大会召开后到1997年初海洋事务与渔业部成立了海岸带管理处这段时间里开展的各种工作，文章重点在于评价在建立海岸带综合机制的过程中综合的概念是如何被应用并被挑战的。文章提出了在东亚地区沿海国家开展合作的可能区域的建议。 相似文献
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天然气水合物地球化学特征 总被引：4，自引：0，他引：4
天然气水合物是在低温、高压以及有足够气体供应条件下形成的一种天然气(主要为甲烷)与水组成的似冰状固态化合物。天然气水合物中包含的甲烷碳是全球甲烷资源的重要组成部分,是一种数量巨大的潜在能源[1]。而且由于甲烷的温室效应,天然气水合物分解释放的甲烷进入大气中会严重 相似文献
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I. E. Timchenko A. A. Primalenny V. D. Yarin E. F. Vasechkina E. M. Igumnova 《Physical Oceanography》2001,11(4):367-378
We use many-year archival observations of hydrologic and hydrobiologic state of the Sea of Azov for the identification of
the structure of a model of its ecosystem. The ecosystem model, supplemented with expert estimates of bioresource consumption
(fish reserve), contamination level, and possible ecologic fines for violation of the sea natural state, is formalized by
the method of system dynamics. Hereat, the major part of influence functions is found in terms of observational data with
application of self-organization algorithms. We also present the results of simulated experiments with the model of the ecosystem,
which enable us to analyse scenarios of its behaviour under the influence of various external factors (wind, river discharge,
water exchange with the Black Sea, etc.).
Translated by Peter V. Malyshev and Dmitry V. Malyshev 相似文献
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Values of root mean square slope 0 and its variations -0 are estimated using the brightness field of an image of the surface of the sea near a speck of light. When 0 and -0 are defined it is highly important to take into account direct as well as dissipated solar radiation.The space-time analysis of the structure of the image brightness field is performed. This gives an opportunity to estimate dispersion relationship and the running effect of a brightness contrast packet. Comparison of the parameters obtained with the theoretical dispersion ratio of internal waves (IW) allows one to make a conclusion that IW surface manifestations are recorded in a frame.UDK 551.463.5 相似文献
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We perform the numerical analysis of the long-wave response of the free surface of a fluid in a basin of variable depth to
the formation of an anomaly of the baric field for a finite period of time. In numerical experiments, we use the distribution
of depths typical of the south coast of the Crimea. We also study the dependence of the dynamics of the sea level in the zone
of the baric anomaly and in the shelf zone on the space and time scales of local changes in the field of atmospheric pressure
in the open part of the basin.
Translated by Peter V. Malyshev and Dmitry V. Malyshev 相似文献