x
uploads/outer core.jpg

outer core (地球的)外核。

outer most

The internal load love numbers , expressed as a general form in this dissertation , are employed to describe the deformation response of the earth ' s solid parts to the dynamical behaviors of the fluid outer core . the spatial distribution and frequency - dependence characteristics of the internal load love numbers are also investigated 以內部負荷love數描述了地球固體部分對液核動力學效應的形變響應,嚴密推導了內部負荷love數的一般表達式,研究了內部負荷love數的空間和頻率依賴特征。

Because of the upper limit of the nuclear density , which prevents the core to compress too far , the collapsing inner core will bounce back outwards . this out - going inner core will collide with the in - coming outer core , which is collapsing rapidly . this collision will send off shock waves and create heavy elements , like uranium 由于原子核的天然密度會成為巨大的阻力,防止核心進一步收縮,這時核心會猛烈反彈,以極高速塌縮的核心外殼會和反彈中的核心碰撞,產生強烈的沖擊波,同時產生出像鈾等比鐵更重的元素,并把恒星外殼炸毀,這便是

The numerical results indicate that the deformation within the solid inner core is very small . however , in the fluid outer core , the changes of the displacement with relatively low spherical harmonic degree ( n < 10 ) is very complicated via the radius , due to the resonance near the eigenfrequenies of the core long - period oscillations . while the spherical harmonic degree of the loading is larger than 10 , the deformation and the gravitational perturbation in the core are very small , and the earth ' s deformation response is dominantly represented as the radial displacement in the elastic mantle 研究了地球在日月引潮力和表面負荷作用下的形變特征,數值計算結果表明,在固體內核中的形變很小,由于在長周期核模本征頻率附近的共振,液核中低階( n 10 )位移隨半徑的變化非常復雜,當負荷階數超過10時,地核中的形變和擾動位都很小,地球的響應主要表現為彈性地幔中的徑向位移,且隨深度增加急劇減弱,地表負荷love數與信號頻率的依賴關系很弱,給出了體潮love數計算的一種有效的近似處理方案。

The rotational changes arise because of tidal forces exerted by the moon and inertial effects related to the liquid outer core sloshing around and to the cycle of evaporation , in which water at the equator gets deposited at the poles as ice that melts seasonally 自轉的改變則因為月球產生的潮汐力,以及因地球外核液體攪動和大氣蒸發循環(赤道蒸發的水氣于地極凝結成冰,并周期性融化)產生的慣性效應。

Fluid motions try to reverse the field on a few thousand years timescale , but the solid inner core tries to prevent reversals because the field cannot change ( diffuse ) within the inner core as quickly as in the fluid , outer core 盡管流體運動會在幾千年的時間尺度上使磁場倒轉,但因為磁場的變化(擴散)在內核里不能與在外核的流體中一樣快,所以固體的內核會盡力阻止倒轉。

Earth ' s large size ( about 12 , 740 kilometers across ) ensures that this heat is lost relatively slowly , which explains why our planet still has a molten outer core and volcanic eruptions at its surface 地球因為體積巨大(直徑約1萬2740公里) ,使熱能損耗得相當慢,這說明了為什麼地球至今仍有著熔融的外核,而且地表還有火山噴發。

So the rare field reversals are most likely caused by larger changes in the flow in the outer core , or in the way in which the field lines are wound into the flow by diffusion 這樣,不經常發生的磁場倒轉,很可能是由外核流體或磁場曲線通過擴散宛然進人流體方式發生較大的變化而引起的。

Indeed , it may be that such fluctuations are simply extreme examples of the continuum of fluctuations in the dynamo processes , an el niflo in the weather of the outer core 當然,其原因可能是如此大的波動只不過是發電機過程中波動連續體的極端例子,一個外核氣候中的厄爾尼諾現象。

The variation must in a swimming pool will soon diffuse throughout the pool , a concentration of magnetic field lines diffuses throughout the planet ' s outer core 與游泳池中一滴有色的染料在池中迅速擴散的方式一樣,一個濃縮的地磁場曲線的擴散遍布地球的外核。

It consists of iron and nickel . the inner core is believed to be solid and the outer core is liquid . the major heat source of the core is the ,地核可細分為內外兩層,內核相信由固體組成,外核則為液體,維持地熱的能源主要來自地球內部的

The largest part of takes place because magnetic field lines are trapped in good electrical conductors such as the molten iron of the earth ' s outer core 發生磁場的再生是因為磁場曲線被限制在良好的電導體內,如地球外核的熔融鐵。

A large volume of electrically conducting fluid , the iron - rich liquid outer core of the earth , is the first of these conditions 第一要件,要有大量的導電流體地球的外核為液態,且富含鐵質。

The outer core will also collapse with the inner core . electrons will react with protons to form neutrons and 核心的外殼會塌縮在核心上,電子和質子會結合成中子,并放出

The outer core of the earth , about two - thirds of the way to the center , is molten iron 地球的地核外部,大致到達中心三分之二的地方是熔化的鐵。

Knock - out core 嵌入心型壓鑄

The core of the earth is made up of a liquid outer core and a solid inner core 地核是由一個液體的外核和一個固體的內核組成的

Controlling the installing quality of overhang - well - vertical - draw out core pumping set 大型懸吊井筒抽芯式泵機組安裝質量控制

The inner core and the outer core 內核和外核

Dynamic properties of the earth ' s outer core 地球外核動力學性質研究