共查询到20条相似文献，搜索用时 62 毫秒
1.
SZF型波浪浮标系统通过无线电台将采集的波浪数据实时地传输到岸站数据接收处理机上,同时将波浪原始数据保存到浮标上的存储器内。为解决浮标大容量海浪原始数据的存储问题,利用USB总线技术设计了一款U盘存储板卡。该U盘存储板卡采用基于Cortex-M3内核的ARM芯片,根据STM32F105 USB OTG接口特点,通过移植μC/OS-II实时操作系统技术进行任务调度,采用邮箱机制进行任务之间的通信,创新性地将通用U盘技术应用到基于单片机采集处理系统的海洋浮标上,实现了波浪浮标大容量、长时间的数据存储。实验测试结果表明,该U盘存储板卡具有存储速度快、准确性高、低功耗、高稳定性、便携性、通用性等特点,可用于多种需要数据存储的仪器设备中,其综合性能显著。 相似文献
2.
Wave-Rider 67780系列测波仪采用HP-85微机作实时数据采集和实时谱处理(200s/块)。所采集的原始数据块间不连续、数据块不贮存,难以满足波浪研究的需要。本文在以往工作的基础上,进一步采用1BM-PC系列微机代替HP-85微机并设计了专用软件包,从而可实现连续(时间任意)的实时数据采集、贮存以及实时波浪统计和Tukey海浪谱分析(1200s)。经多次波浪测量应用,证实该测波仪的实时数据采集贮存和实时数据处理能力得到明显提高。该软件包适用于其它类似测量系统,具有一定的应用价值。 相似文献
3.
本文介绍在测波浮标中应用PC－1500袖珍计算机及其扩充板组成的自动数据采集存贮装置，它能自动定量进行波浪数据采集，并计算波面记录的相关函数，当小浪时存贮相关函数值，大浪时同时存贮波面记录的原始数据，使存贮空间得到最有效地利用。 相似文献
4.
波浪方向浮标发展概况及方向能谱的计算模式 总被引：1，自引：0，他引：1
对海洋诸要素的观测,直接关系到人们生命财产的安全,关系到人们在海洋各种实践活动中的近期和长远的科益。近些年来,随着我国海洋事业的发展,在海洋工程、海洋开发、海洋环境调查和海洋环境预报均对波浪要素的观测提出了更高的要求。不仅要测取波高、波周期一般统计要素和一维的波浪能谱,还要测取波浪方向统计要素和二维的波浪方向能谱,为海岸工程、海上运输、海港建设等前期工程的安全、经济合理设计提供必需的原始数据,也为 相似文献
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风暴期间黄河水下三角洲波浪变形 总被引：3，自引：0，他引：3
为确定适用黄河三角洲的波动理论，对黄河三角洲风暴期间及前后波浪连续观测资料进行了处理，将其投在komar波浪理论分区图中后，分析了风暴期间黄河水下三角洲波浪的波形特征，发现站位所在地适合的波浪理论主要为艾里波和斯托克斯波，风暴期间波浪变形，还存在少量超过极限波陡线的波浪，通过比较常见的极限波陡线，看出Miche曲线比较适合该研究区。 相似文献
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波浪在黄河三角洲形成中的作用 总被引：14，自引：3，他引：14
本文应用１９８７年在黄河海港心北７ｍ水深处理观测的９个月波浪资料进行统计研究，以揭示波浪在三角洲形成中的作用研究表明：（１）波浪对下三角洲海底泥沙的再悬浮力是比较大的，一年中有约有１４４天时间，波浪使１２．５ｍ水深以内泥沙启动，５ｍ以内的泥沙发生位移。（２）波浪作用的沿岸相对输沙力，北岸向西，东岸向南，输沙力北岸大于东岸，且随着三角洲的前积淤进，这种差异在逐渐增大。（３）该区强浪的向为ＮＥ，次经浪 相似文献
10.
利用数值方法和物理模型分析以反射为主的陡坡上波浪传播变形特性。数值方法采用标记单元法，为处理倾斜反射边界对斜坡前波浪运动的影响，提出了“台阶镜像法”。通过1：1．5光滑斜坡上物理模型试验，分析了不完全立波的运动特性，说明强反射光滑陡坡坡前波浪运动呈明显的立波状态，它与直墙反射的主要差别是被前第一波节点和腹点位置向岸推移。本试验得到的波浪反射、爬高和回落特征值与港口工程规范给定结果接近。 相似文献
11.
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
12.
We analyze the components of the carbon system of the Sevastopol bay waters and the balance of main sediment-forming substances
using the data of field investigations in 1998–2008. The interannual variations of total inorganic carbon and the equilibrium
partial pressure of carbon dioxide in the bay water are noted. An increase in the flux of carbon dioxide into the bay and
in the content of organic carbon in bottom sediments is revealed, and an explanation of this phenomenon is given. The priority
accumulation of organic carbon in the sediments of the bay is established. We assess the interannual variation in the relative
abundances of organic and inorganic carbon as an index of the carbon cycle stability. 相似文献
13.
We generalize and analyze the state of investigations of the influence of river waters on the hydrologic structure of the
Black Sea. Specific features of the water, regime and hydrography of rivers flowing into the sea, data on the discharge of
rivers, and intrayear and interyear variability of the discharge are presented. We discuss and analyze works studying the
transformation of river waters, routes of desalinized sea waters, and their influence on the thermohaline structure and dynamic
regime of the sea.
Translated by Peter V. Malyshev and Dmitry V. Malyshev 相似文献
14.
V. A. Ivanov S. P. Lyubartseva N. Mikhailova N. B. Shapiro 《Physical Oceanography》2001,11(6):509-524
We analyze the results of numerical calculations performed according to the three-dimensional interdisciplinary model of an
ecological system of the Black-Sea shelf zone near the estuary of the Danube. The complete system of equations of hydrothermodynamics
is solved together with transport equations of the advection-diffusion-reaction type used to describe the transformation of
a substance (nitrogen) between the components of the characteristic vectors of the ecosystem: plankton, detritus, and biogenic
elements (nitrates). We describe the distinctive features of the circumcontinental distribution of components obtained as
a result of numerical experiments and present arguments for the conclusion that the ecosystem of the Danube estuary water
area plays the role of a buffer zone between the press of the Danubian biogenic pollutions and the neighbouring areas of the
shelf zone and open sea.
Translated by Peter V. Malyshev and Dmitry V. Malyshev 相似文献
15.
Ten years of semistationary studies of the interaction of the ice cover and the coastal relief of the Kandalakhsa Gulf in the White Sea allowed us to reveal the peculiarities of these processes in the warm and cold years and the mechanisms of the origination of ice forms, including ice tents, which govern the character of the tidal flats. Three dynamic fast ice zones are distinguished by their geomorphological location, morphology, and ice dynamics. The dependence of the mechanisms and volumes of the enrichment of the fast ice in the sediments on the coastal zone??s relief was established. At the coast of the Kindo Peninsula (Velikaya Salma Strait), the ice mostly contains fine-sandy sediments. Coarser sediments, including boulders, are occasional and frozen into the ice at the contact of the fast ice and the bottom. At the expense of the ice??s spreading by 4?C6 times in the warm years and 2?C4 times in the cold years, several thousand tons of sediments mostly from the tidal flat??s surface (100?C700 m3 from 1 km of coast in the wide tidal flats and <50 m3 on the steep coasts) are delivered to the water area. 相似文献
16.
Relationship between the path of the Kuroshio in the south of Japan and the path of the Kuroshio Extension in the east 总被引：2，自引：0，他引：2
A relationship between paths of the Kuroshio and Kuroshio Extension (KE) is investigated, using the satellite-derived altimetry
dataset of 1993–2008. When the Kuroshio takes the nearshore nonlarge meander path or typical large meander path and resultantly
goes through the deeper channel (about 2500 m) of the Izu-Ogasawara Ridge, the KE path adopts a relatively stable state with
the two quasi-stationary meanders. On the other hand, when the Kuroshio takes the offshore nonlarge meander path and then
passes over the shallower part of the Ridge (about 1000 m), the KE path tends to be convoluted, i.e., an unstable state. 相似文献
17.
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
18.
E. L. Vinogradova 《Oceanology》2008,48(4):483-492
The spatiotemporal variability of the hydrochemical composition of the riverine runoff in nearmouth areas is presented using the example of selected rivers of the Arctic Basin. The temporal dynamics of the riverine nutrient runoff are mainly determined by the seasonal and interseasonal variations in the drainage basins. The spatial variations in the chemical composition of riverine waters in the near-mouth areas are mainly caused by the dynamics of the water flow and the river bed relief and, to a lesser degree, by biochemical processes. It is shown that the variations in the nutrient composition of the waters in near-mouth areas are comparable in magnitude to those at the river-sea geochemical barriers. 相似文献
19.
The methodology and the first results of the computations of the volumes, masses, and growth rates of the sedimentary body of the buried Black Sea basin are presented. Their temporal evolution reflects the regional paleogeodynamics, in particular, the reorientation of the vector of the relative movement of the Arabian and Eurasian lithospheric plates and the related intensification of their collision in the late Miocene-Pliocene. 相似文献
20.
Izvestiya, Atmospheric and Oceanic Physics - Analysis of the temporal variations of the virtual heights of the sporadic E layer (h?ES) determined from ionograms with increased accuracy (1... 相似文献