共查询到20条相似文献，搜索用时 62 毫秒
1.
南澎岛是广东省南澎列岛中的一个岛屿,位于南澳岛的东南方,北纬23°15＇,东经117°20＇。离大陆沿岸约60公里,全岛面积仅0.34平方公里。该岛东、南岸较陡峭,西、北岸较平缓,岛上岩石裸露。 有关南澎岛海藻的研究未见有报道。 本文报道南澎岛大型底栖海藻的种类和分布,并就有关海藻的生态特点、区系性质等问题进行讨论。 相似文献
2.
3.
4.
潮汐能作为典型的可再生能源,有着清洁、可持续利用的突出特征。世界范围内可用于开发的潮汐能十分丰富,现阶段已有包括法国、美国、加拿大、英国、阿根廷、澳大利亚、印度、俄罗斯、韩国、中国等在内的多个国家利用潮汐能进行发电。文章通过分析我国潮汐能开发利用中存在的不足,进而从潮汐能短中长期战略部署、绿色证书制度、法律完善、市场化取向和公众参与等方面提出完善潮汐能开发利用法制构建的建议,以促进潮汐能的更好利用。 相似文献
5.
6.
7.
在世界海洋中,潮汐能的理论蕴藏量约30亿千瓦,年发电量可达12000亿千瓦时。我国潮汐能蕴藏量丰富,经勘测理论蕴藏量达1.1亿千瓦,年发电量达900亿千瓦时。 人类为了开发利用潮汐能,进行了长期的探索和研究。早期只是把潮汐能转换成机械能,用于推磨、提水、锯木等,而利用潮汐能发电 相似文献
8.
9.
嵊泗列岛是全国唯一的国家级列岛风景名胜区.本研究就嵊泗列岛的海洋气候特点、气象景观和旖旎风光,秀丽景色的"3S"与"3N"的天然条件,提出嵊泗列岛旅游气候资源开发利用的构想与建议.希望能为开发利用嵊泗列岛旅游气候资源提供有价值的参考. 相似文献
10.
本文提出了一种全新的潮汐能开发方式,把封闭管道中的水击效应应用到潮汐能开发中。利用水锤泵将海水提至高水库,把潮汐能的低水头势能转化成高水头势能存蓄在高水库中,再视需求进行发电,免除了传统方法先潮汐发电再抽水蓄能的二次转化。本文通过模型泵测试模拟了水锤泵在潮差的驱动下将水提送到蓄水库的工作状况,获取了1.0~3.0m水位差条件下,将水输送到5.0~20.0m水头蓄水池时模型水锤泵的工作效率和输出功率。试验表明,在1.0~3.0m水位差条件下,水锤泵的能量转化效率超过0.60,且水头变动时,效率基本稳定。经估算,水锤泵潮汐蓄能发电的平均能量利用率略高于潮汐发电联合抽水蓄能。 相似文献
11.
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
12.
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
13.
14.
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
15.
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
16.
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
17.
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
18.
The analysis of the structure of the cryolithozone, facies, and thicknesses of the Quaternary sediments and the results of the physicochemical mathematical modeling of the modern shelf of the western part of the Laptev Sea support the influence of the Late Pleistocene glaciations on the heat conditions and the distribution of the permafrost in the area. A ～200-m thick glacier formed under aerial conditions from atmospheric precipitation represented the metamorphosed snow cover. According to the modeling, the long-living (from 60?50 to 10?4 ky) glacier reduced the thickness of the permafrost rocks in the reviewed shelf area for 280–360 m. The Holocene marine transgression additionally decreased the thickness from 50–140 m on the inner shelf to 220–350 m on the outer shelf. The modern submarine cryolithozone 450-0 m thick is wide-spread in the studied region from the coast to the shelf boundary (isobaths of 130–140 m), where it pinches out at a distance of ～380 km from the coast at a depth of ～250 m above the sea level. 相似文献
19.
20.
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