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1.
1 PresentSituationofResearchforGlobalClimateRecently ,theresearchfortheglobalclimatechangescausedbytidehasachievedremarkableresul  相似文献   

2.
The Effect of Tide on the Global Climate Change   总被引:1,自引:0,他引:1  
The differential rotation between the solid and fluid spheres caused by tidal force could explain the 1500 to 1800 - year cycle of the worlds temperature. Strong tide increases the vertical and horizontal mixing of water in the oceans,dra-wing the cold Pacific water from the depths to the surface and the warm water from the west to the east, where it cools or warms the atmosphere above, absorbs or releases CO2 to decrease or increase greenhouse effect and to make La Nina or El Nino occur in the global. The moons declination and obliquity of the ecliptic affect the tidal intensity. The exchange of tidal energy and tide -generating force caused by the sun, moon and major planets makes the earths layers rotate in different speeds. The differenti-al rotation between solid and fluid of the earth is the basic reason for El Nino and global climate change.  相似文献   

3.
1 MathematicModelofTidalVibrationSupposethat 3semi -axesofaellipsoidarea ,bandc (a >b >c) ,latitudeisθ ,longitudeisψ(changingfrom 0°to 90°) ,  相似文献   

4.
Cold water in the deep Pacific can be drawn up to the surface (or west warm water drifts eastwards) because strong tide increases the mixing of seawater both in vertical and horizontal. In this way greenhouse effect is decreased or in-creased by means of absorbing (or releasing) CO2. Therefore, La Nina cold event (or El Nino warm event) may occur, which is caused by wanning - up or cooling - down air above the ocean. Volcanic action at sea bottom is also controlled by strong tide.  相似文献   

5.
l Some problems on the astronomical theory of ice ageThe astronomical theory of ice age, as the up todate solution for the global climatic changes in theQuaternary period, has been accepted by the most ofthe scientists in the world. However, there are stillsome arguable problems to need further research.Zhou Shangzhe (t994) pllt forward three questionslike as follows:The astronomical theory of ice age suggestedthat the ice age occurred when the eccentricity of theorbit of the earth was at its…  相似文献   

6.
Glaciation between northern hemisphere and southern hemisphere were synchronous, the ice age occurred not in high but in low value of the eccentricity of the earth's orbit. Such facts went against the precession principle of the astronomical theory of ice age. The inhomogeneous distribution of climate consisted with the inhomogeneous distribution of ocean and continent. The north/south antisymmetry may be attributed to southward deviation of the thermal center and northward deviation of the mass center within the mantle demonstrated by seismic tomography. The core - mantle angular momentum makes rotational energy into thermal energy and mantle plumes erupt in the ocean bottom. The earth's deformation by tidal force makes the eruption of mantle plumes strong. They are the reason that glaciation between the Northern Hemisphere and Southern Hemisphere are synchronous and the ice age occurred in low value of the eccentricity of the earth' s orbit. The tectonic movement is playing a most important part in global climate change.  相似文献   

7.
The existence of the lunar has its advantages as well as disadvantages. Many dynamic phenomena are related to the lunar due to the rate of masses of the earth and the lunar is maximum. That is probably the reason for the life existence on the earth. The tide resulted from the moon gravitational force is the root of some disasters. However, it can also reduce the green house effect and regulate the temperature. It is proved that the moon is the thermostat of the earth. The greenhouse effect would be out of control without the moon, and the tendency for the global warming up would be critical. It is a risk to smash the moon without understanding clearly the advantage and disadvantage.  相似文献   

8.
Climate and tectonics are two interactive factors in the earth's system. They are controlled by astronomical cycles. It has been unheeded for a long time that large-scale material motion caused by global climatic change is one of the powers for tectonic movement. Tectonic movement makes the distributional pattern of continent and ocean change and makes global climate type change strongly in large scale. It is a good example that the change of the sea-ice around Antarctic Continent and in the Drake Passage has the switch process for global climatic changes. Tide makes the oceanic crust of the East Pacific Ocean and the West Pacific Ocean rise or fall 60 cm oppositely. Before and after El Nino events,the oceanic level of the East Pacific Ocean and the West Pacific Ocean may rise or fall 40 cm oppositely. Because of isostasy, oceanic crust may fall or rise 13 or 20 cm. They are the reasons why El Nino events are interrelated with the earthquakes and volcanoes. This is so called seesaw phenomenon of oceanic crust.  相似文献   

9.
1SeesawphenomenonofoceaniccrustSince 1996, Yoshino etal.(2002) have been us-ing the space geodetic techniques to observe crustal deformation at four sites in Tokyo metropolitan area. It is called Keystone project (KSP). At the end of June in 2000, volcanic and seismic events star-ted at Izu islands, south of Tokyo. Following the ev-ent, extraordinary crustal deformation was observed not only around the Izu islands, but also at the Key-stone network, where the closest site is over 100…  相似文献   

10.
1 IntroductionManymeteorologistsandoceanographerspaidmuchattentiontothestudyofthemechanismofENSOformanyyears,suchasBjerknes(1 966) ,Wyrtki(1 975) ,McCreary(1 983 ) ,Philander(1 984) ,ZhangandChao(1 993 )andMcCPhaden(1 998)havemadegreatdevelopmentinthestudyofENSO .Especiallyinthe 1 990’s,withtheincreasingofthedatainthedeepocean ,thesomeonearguedthattheENSOepisodehadcloserelation shipwiththeeasterntransportationoftheanomalousseasurfacetemperatureinthewestPacific(LiandMu 1 999;Huang 2…  相似文献   

11.
利用1959—2008年成都东部地区金堂县、双流县、新都县的气温、降水资料,用距平、累积距平、线性趋势分析了成都东部地区气温、降水的时空变化特征,并用滑动-t检验与MK检验分析了成都东部地区气温与降水的突变特征。结果显示:近50年来,成都东部地区气温明显升高,降水总体呈减少趋势,成都东部气候呈现暖干趋势。同时对成都市5个温度区进行温度湿度和绿化率关联分析,结果证明,无论是平均温度还是最高温度均随相应区域内绿地率、绿地覆盖率的增大而随之降低;而相对湿度随之升高。可见,增大绿化面积的旷达对环境降温增湿的作用十分显著。因此,在成都东部地区植树造林不仅能改善环境气候,更能创造巨大的生态经济效益。  相似文献   

12.
通过对全球化语境下英语教学范式正由"正统"到"非正统"、由"一元"到"多元"的发展变化的探讨,提出在全球英语教学多元化格局下我国高校英语教学应选择适合中国本土特征的英语教学模式、将本土文化的内容融入英语教材的编写中,实施双向互动的交流方式,以培养学生本土文化意识。  相似文献   

13.
四川巴中地区38年来气候变化特征分析   总被引:1,自引:0,他引:1  
利用1971—2008年巴中地区4个站点的地面常规观测资料和滑动平均、MK法及MHF小波分析等统计诊断方法,分析了该地区降水和温度的年际、年代际的气候变化特征。结果表明:巴中地区的年均气温总体上表现出暖→冷→暖3个阶段,并呈现出8年的准周期变化特征;冬春气温的年代际变化显示出暖→冷→暖3个阶段性特征,而夏秋气温的年代际变化则显示出暖→冷→暖→冷4个阶段性特征。巴中地区的年降水量呈现出减少的趋势,递减率为13.813mm/10年;春季降水量低于全国的春季平均水平,夏、秋季平均降水量均高于全国的平均水平,且占到全年降水量的80%以上。巴中地区的年降水量存在较为显著的2年和6年的准周期变化,降水量增加和减少的突变较多显示出其复杂性。春、夏、秋三季的降水量有随温度升高而下降的趋势,而冬季的降水量有随温度的升高先增多后减少的趋势。巴中气候特征的分析对巴中农业区划和生产安排有其重要意义。  相似文献   

14.
海权是国家主权的自然延伸,是一种具有权利义务内容的法权;海权是国家在海洋中享有的基本权利,是一种安全权和自卫权;海权还是主权国家的发展权。随着国际海洋新秩序的确立,国际社会应该重新认识和定位海权。我国政府应维护我国的海权,推动我国海洋事业的发展。  相似文献   

15.
发表权本质上是作者控制自己作品公开的权利,表现为作者对作品发表这一行为和状态的控制力,它具有独立存在的价值.发表权并不是著作财产权或者兼有人身权与财产权的双重属性,它只能是著作人身权.发表权的特点是发表权所具有而其他著作人身权没有的属性.“一次用尽”、“不能转移”、“区别其它著作人身权的显著性”难以成为发表权的特点.发表权的基本特点应着眼于发表权的内容、保护期限、行使主体和方式的特殊性.在作品发表之前作者对一篇作品的发表权可以多次和多种方式行使,在会议上宣读论文也是发表权的行使方式  相似文献   

16.
运用数值模拟建立青藏高原兹格塘错流域土壤、植被、气候等的空间和属性数据库;接着,借助分布式流域尺度水文模型(SWAT模型),对兹格塘错1956—2006年间的流量进行模拟实验;最后,反演50年来兹格塘错流域水文过程,测试流域温度、降水和蒸发组合的敏感因子对湖泊水量变化的效应,探讨50年来湖泊水量对气候变化的响应。模拟实验的边界条件设置为自然地形、土壤、植被覆盖,其中土壤资料包括有机质含量、粒径等理化参数。模拟结果表明:兹格塘错的年平均流量为6.3m3/s,流量高峰集中在8月至10月,并且由于融雪补给的关系,3月出现另一个流量高峰;模拟结果与遥感解译所得到的结果吻合较好。敏感实验表明:兹格塘错流域内温度、降水和蒸发组合的敏感因子实验具有高原特征,即高原湖泊的水文过程和湖泊流量变化有着较为敏感的响应关系;兹格塘错流量受降水的影响最大,随着降水的增加,流量有所增加;在温度升高的情况下,流域蒸发量增加速度大,兹格塘错流量增加的效应不明显,而在冷湿模式下,流域蒸发量降低,兹格塘错流量增加显著。  相似文献   

17.
在魏晋诗人笔下,山川河流已不纯粹是大自然的产物,而是成为了包含着诗人复杂情感的有生命、有性格的载体,其表现了诗人对茫茫宇宙的无穷探索及对个人短暂生命价值的无限追求,山的崇高伟大与水的深邃绵邈融汇成了作者的主体人格意识,这种物对人的异化具有异常丰富的内涵,是天人合一传统思想在诗歌领域的革新,无论自觉与否,作者都在力图达到这种物我两融的境界.  相似文献   

18.
在中国楚辞学的研究领域,察知域外的研究历史及现状,借鉴域外的研究成果,对于促进楚辞学研究的不断深入,无疑具有非常重要的意义.徐志啸教授的<日本楚辞研究论纲>全面介绍了日本的楚辞研究历史、现状及重要代表人物,并以中国的楚辞研究为参照系,对日本的楚辞研究的特点进行了准确的概括,是我们了解日本楚辞研究的重要参考书.  相似文献   

19.
用1961—2008年NOAA的月平均再分析资料和1980—2006年云南5个探空站的资料,采用大气可降水量和水汽通量公式计算分析大气可降水量和水汽通量,并用线性趋势分析其变化特征。结果表明:云南四季的可降水量北少南多,呈“u”型分布,夏季最大,冬季最小。对云南地区四季的水汽通量分析表明,四季的水汽净收入主要集中在对流层低层;地面-300hPa的水汽净收入在夏季最大、秋季次之,而冬季最小。云南经向的水汽输送和纬向的水汽输送呈反相关,近48年,云南四季水汽呈增加趋势,其中夏季增加最多,春季次之。  相似文献   

20.
本义以东海陆架盆地地质调查和勘探开发的实际资料为依据,阐明了东海海底地形、地貌及地质特征;强调了近年来在石油地质学理论研究中的重要突破及石油勘探中的重要进展。文章分析了东海地层分布及其含油气规律;重点解剖了西湖凹陷及台北坳陷的油气资源富集特征;探讨了东海油气田早期开发利用方案;并指出了其开发的巨大经济价值和良好的前景。  相似文献   

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