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1.
根据1977-2012年历年2 月份北黄海断面表底层温度、盐度观测资料,采用旋转经验正交函数（REOF）、跃变分
析、最大熵谱分析和延迟相关分析等方法,分析了断面温度、盐度年际变化时空模态和机制。断面表底层温度、盐度时空模
态主要有两种：开阔海型和近岸（近海） 型。温度、盐度模态的时间分量变化主要有准周期变化和线性趋势变化,温度模态
时间分量存在显著线性升高趋势。历年2月平均气温年际变化主要影响开阔海型温度模态,历年1 月经向伪风应力和年际变
化主要影响近岸型温度模态。盐度模态主要受渤南（鲁北）水和辽南水盐度年际变化影响,受渤南（鲁北） 水影响的盐度模
态,模态时间分量存在显著线性升高趋势;受辽南水影响的盐度模态,模态时间分量存在显著线性降低趋势,其中模态线性
升高的斜率大于模态线性降低的斜率。 相似文献
2.
根据渤海断面1978-2012 历年2 月表、底层海水温度、盐度和气候要素观测资料,采用旋转经验正交函数
（REOF）、最大熵谱分析和延迟相关分析等方法,研究了渤海冬季表底层温度、盐度年际变化时空模态与气候响应。渤海冬
季表底层温度年际变化分为三种时空模态：开阔海型、黄河口型和辽河口型,其中只有开阔海型模态是对冬季气温变暖的响
应,时间分量有显著线性升高趋势和跃变升高。黄河口型模态是对冬季西北季风强度逐渐减弱的响应,时间分量有显著线性
降低趋势。辽河口型模态是对局地海冰年际变化的响应,时间分量准平衡变化。渤海冬季表底层盐度年际变化分为二种时空
模态：辽东湾型和黄河口型,其中黄河口型模态与黄河口年径流量滞后5 年显著负线性相关,该模态时间分量有显著线性升
高趋势和跃变;辽东湾型模态与黄河年径流量滞后7 年显著负线性相关;滞后2 年显著非线性相关,该模态时间分量年际变
化为准平衡形态。黄河口年径流量是影响渤海冬季盐度年际变化的主要因素。 相似文献
3.
根据南黄海断面1977—2016年历年8月标准层温度、盐度与气候要素观测资料,采用时空分析等方法,分析了南黄海断面夏季温度、盐度年际时空变化与气候响应。断面温度主要有4种时空模态,夏季风生环流、冷水团强度、面积与断面冬季温度模态是主要温度模态年际变化的主要影响因素;夏季风生流场形态、春季PDO指数与断面冬季温度模态是次要温度模态年际变化的主要影响因素;温度模态时间分量均为准平衡态长期变化。断面盐度主要有4种时空模态,夏季苏北沿海低盐度水体、南黄海中部高盐度水体与夏季黄海风生流输送作用是盐度主要模态年际变化的主要影响因素;夏季南黄海降水量减少与风生流输送减弱是盐度次要模态年际变化的主要影响因素。盐度主要模态时间分量为准平衡态长期变化,次要模态时间分量存在显著线性低盐趋势变化。断面夏季温盐多年平均分布主要受到夏季多年平均风生环流影响。断面核心冷水团月平均温度为准平衡态长期变化;面积存在显著线性减小趋势,黄海风生流场季节与年际变化是南黄海核心冷水团年际变化主要影响因素,春季PDO指数对冷水团面积年际变化有显著非线性影响。断面冷水团、核心冷水团月平均盐度为显著线性低盐趋势周期年际变化。由于黄海温盐长期线性趋势变化,与30多年前状况相比,目前黄海温盐场季节循环时空变化形态可能已经发生显著改变。 相似文献
4.
渤海冬季溶解氧与表观耗氧量年际时空变化 总被引：1，自引：0，他引：1
根据渤海断面1978-2013年历年2月表底层海水温度、盐度、溶解氧观测资料,采用旋转经验正交函数(REOF)、最大熵谱和延迟相关分析等方法,分析得出:渤海冬季表底层溶解氧年际变化主要有2种时空模态:开阔海型和黄河口型,第1种模态时间分量为显著周期和线性下降趋势变化,表底层水体存在溶解氧显著线性降低趋势;第2种模态时间分量为显著周期准平衡变化。渤海冬季表底层表现耗氧量年际变化主要有2种时空模态:渤中-黄河口型和辽河口型,第1种模态时间分量为显著周期和线性上升趋势变化,表底层水体存在显著线性贫氧趋势;第2种模态时间分量为显著周期准平衡变化。冬季渤海中部和黄河口附近海域是出现溶解氧降低与贫氧状况显著线性趋势的主要海域,海洋生化效应和冬季水温模态年际变化是影响渤海冬季溶解氧、表观耗氧量模态年际变化的主要因素之一。渤海冬季表层溶解氧、表现耗氧量时空模态出现10a尺度跃变。 相似文献
5.
根据北黄海断面1976~2015年历年8月温度、盐度与长岛气候要素资料,采用旋转经验正交函数(REOF)、最大熵谱分析和延迟相关分析等方法,研究了北黄海断面夏季温度、盐度年际变化时空模态与气候响应.断面温度主要有4种时空模态:第一、二模态为海洋因素影响的年际变化分量,渤海断面夏季温度分量和7月太平洋年代际振荡(PDO)指数的线性与非线性作用是主要影响因素.第三、四模态为海洋与大气因素影响的年际变化分量,渤海断面夏季温度分量、断面冬季表层平均温度、7月风驱环流强度和5月PDO指数的线性和非线性作用是主要影响因素.断面盐度主要有4种时空模态:第一模态为海洋与大气因素影响的年际变化分量,渤海夏季盐度、夏季降水量及断面冬季表层盐度是主要影响因素;8月纬向风驱环流是次要影响因素.第二至四模态为大气因素影响的年际变化分量,7、8月风驱环流强度和夏季降水量是主要影响因素.北黄海夏季风驱环流分布是北黄海断面夏季温盐年际平均分布的主要影响因素.断面温盐垂直层结年际变化为准平衡态周期年际变化.北黄海断面冷水团月平均温度和面积为准平衡态周期年际变化,断面温度第三模态、断面冬季表层平均温度是断面冷水团月强度年际变化的主要影响因素,7月PDO指数是非线性影响因素.北黄海断面冷水团月平均盐度为显著线性低盐趋势周期年际变化,断面盐度的第一至三模态以及渤海断面夏季盐度分量的线性和非线性作用是冷水团月平均盐度年际变化的主要影响因素.北黄海断面夏季冷水团中平均温度、盐度的长期变化趋势是不同的,不存在长期稳定的比例关系. 相似文献
6.
根据1978-2011年渤海断面历年8 月海水表底层活性磷酸盐监测资料,采用REOF、最大熵谱和延迟相关分析等方
法,分析渤海夏季表底层活性磷酸盐年际时空变化有3种模态：河口型、辽东湾型和开阔海型。其中河口型和开阔海型模态
年际变化为显著周期和线性减小趋势。辽东湾型模态年际变化为显著周期的准平衡变化。磷酸盐3 种时空模态之间存在延迟
相关关系,夏季海流、水温、浮游植物生消以及磷酸盐再生、排放、海水-沉积物交换、磷酸盐沉积等过程年际变化与3 种
形态的磷酸盐年际变化位相延迟相关分布有关。渤海夏季断面海水磷酸盐浓度年际变化呈现波动形减小,2004 年后,渤海中
部磷酸盐浓度显著减小。 相似文献
7.
《中国海洋大学学报(自然科学版)》2016,(6)
根据东海30°N断面1976—2013年历年2月份表、底层温度、盐度资料,采用经验正交函数(EOF)、谱分析等方法分析了断面温盐的空间分布特征和时间变化特征。结果表明:断面温度空间变化趋势可分为西段和东段,盐度变化可分为西段、中段和东段;表层温度第一模态呈现准平衡趋势且近海比外海温度变化幅度大,底层温度第一模态呈现下降趋势;表层盐度有降低趋势且近海比外海降低趋势大,底层盐度在近年来表现出降低趋势。该断面水温年际变化和El Nio关系密切;盐度短期震荡和El Nio有关系,而长期变化与PDO有关。 相似文献
8.
根据黄海1977年5月—1981年11月逐月大面盐度调查资料,采用旋转经验正交函数(REOF)、调和分析和延迟相关分析等方法,分析了黄海5层盐度场季节循环时空模态与机制。黄海盐度场季节循环主要有2种时空模态:第一模态是对黄海沿岸河流径流、苏北沿岸水、渤南沿岸水和蒸发量与降水量之差季节变化的响应;第二模态是对黄海暖流高盐度水输送季节变化的响应。第一模态空间分量垂直方向为双层结构;第二模态为单层结构。2种模态季节变化位相自表层传播至底层均需要2个月,同层第二模态季节变化位相滞后第一模态2~3个月。各层2种模态时间分量季节循环时间为准对称型。表层温盐模态之间同步显著负相关,表层以深各层温盐模态之间有1~2个月延迟显著负相关。黄海盐度场季节变化容易受到年际变化影响出现季节变异。 相似文献
9.
根据1975—2017年冬、夏季节渤、黄海沿岸25个气象站风观测资料,采用二维非线性垂直平均风生流模式、旋转经验正交函数(REOF)等方法,研究了渤、黄海冬、夏季节平均风生流速度势与流函数场年际变化时空模态与环流变异.由于冬、夏季节渤、黄海风应力场强度年际变化显著线性减弱趋势,冬季渤、黄海平均速度势与流函数强度年际变化线性减弱速率大于夏季,黄海冬、夏季平均速度势与流函数强度年际变化线性减弱速率大于渤海.渤、黄海冬、夏季节平均风生流速度势与流函数场年际变化主要有两种时空模态,冬季渤海垂直环流显著线性减弱以及水平环流准平衡态年际变化是主要分量,冬季黄海垂直与水平环流准平衡态年际变化是主要分量.夏季渤海垂直环流显著线性减弱以及水平环流准平衡态年际变化是主要分量,夏季黄海大部分海域垂直环流显著线性减弱与局部垂直环流显著线性增强年际变化是主要分量,夏季黄海水平环流形态此消彼长显著线性增强及减弱年际变化是主要分量.冬季黄海暖流暖水向南黄海西侧以及向渤海中部输送过程是在3～4个环流之间传递形成,并非由单一环流输送形成.冬季渤海中部辐散下沉反气旋环流与黄海中部至渤海海峡的气旋环流、黄海东部辐散下沉反气旋环流是冬季黄海暖流强度与范围的控制环流,夏季渤海中部辐散下沉反气旋环流与黄海中部辐合上升气旋型环流是夏季渤、黄海冷水团强度与范围的控制环流,冬、夏季节渤、黄海控制环流年际变化形态的变换形成冬季黄海暖流与夏季渤、黄海冷水团暖年或冷年的年际变化. 相似文献
10.
根据渤海断面1978~2014年历年8月温度、盐度和溶解氧观测资料,采用旋转经验正交函数(REOF)、最大熵谱和延迟相关等方法,研究了渤海夏季断面溶解氧含量和表观耗氧量年际变化时空模态.溶解氧含量主要存在4种时空模态:第一模态空间分量主权重在10 m以深水体;时间分量均为显著线性低氧趋势周期年际变化和10a尺度跃变.第二、四模态空间分量主权重在5 m以浅水体及断面南端底层;时间分量均为显著线性高氧趋势周期年际变化和10a尺度跃变.第三模态空间分量主权重在10 m附近;时间分量为准平衡态周期变化和10a尺度跃变.表观耗氧量主要有4种时空模态:第一、二模态空间分量主权重在中层及底层;时间分量均为显著线性贫氧趋势周期变化和10a尺度跃变.第三、四模态空间分量主权重在5 m以浅水体及断面南端底层;时间分量均为显著线性富氧趋势周期变化和10a尺度跃变.生物活性组分耗氧与海流输送减氧过程是夏季溶解氧、表观耗氧量模态显著线性低氧、贫氧趋势年际变化主要影响因素,饱和溶解氧强增氧、生物活性组分光合作用生氧和海流输送增氧过程是夏季溶解氧、表观耗氧量模态显著线性高氧、富氧趋势年际变化主要影响因素.渤海夏季深层水体中生物耗氧作用大于浅层水体中生物生氧作用,20 m以深水体中显著线性低氧、贫氧趋势快于20 m以浅水体的显著高氧、富氧趋势.生物活性组分氧化与光合作用是渤海夏季年际平均溶解氧含量、表观耗氧量分布以及溶解氧含量、表观耗氧量年际时空变化的主要影响因素,温度、盐度不是主要影响因素. 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.
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
16.
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
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