橫波波前 的英文怎麼說
中文拼音 [héngbōbōqián]
橫波波前
英文
shear wavefront-
The frontal structure of longmenshan in the west of sichuan is very complex, showing intense structure deformation in overthrust belt, high structure amplitude, steep stratigraphic dip, developed fault blocks, complex seismic wave field, frequent change of lateral velocity, and poor image of post - stack time migration processing
摘要川西龍門山前緣構造非常復雜，逆掩推覆構造帶構造形變強烈，構造幅度大，地層傾角陡，斷塊發育，地震波場復雜，速度橫向變化大，常規疊后時間偏移處理成像效果較差。In this paper, the practical data is analysed and get a good effect. it proves that it is vailed for vti layers using the approximation moveout formula in this paper. this method has a good foreground
本文還結合實際資料進行了分析，取得了較好的效果，說明了用本文建立時距曲線擬合公式進行橫向各向同性介質多波速度分析是可行的，且具有廣闊的發展前景。It is shown that the ability of wavefront reconstruction of lsi is better than hws, for the indirect sampling information of wavefront with lsi is more than hws
結果表明，在相同輸入波前、相同探測面元、相同擬合函數及階數的情況下，橫向剪切干涉儀的波前復原能力比哈特曼波前傳感器強。He lifted up the sable waves of hair which lay horizontally over his brow, and showed a solid enough mass of intellectual organs, but an abrupt deficiency where the suave sign of benevolence should have risen
他抓起了橫貼在額前的波浪似的黑發，露出一大塊堅實的智力器官，但是卻缺乏那種本該有的仁慈敦厚的跡象。The dissertation focuses on seismic wavefield forward modeling and migration for the fractured reservoir. the paper integrates and researches the wavefield extrapolation operator for lateral variation of velocity, analysis of the wavefield characteristic, forward modeling and depth migration of prestack and poststack seismic wavefield, creation of wavelet, design of the model with fracture and cavity, and computation of reflectivity
本文圍繞縫洞儲層地震波場正演與偏移問題，對橫向變速波場延拓運算元；疊前與疊后正演模擬；疊前與疊后深度偏移；子波的生成；縫洞模型的設計、反射系數的求取、正演、偏移及其波場特徵分析進行了一體化研究。Comprehensively discuss the issues in application, adaptive condition and performance, propose a fast arithmetic of forward modeling and depth migration in common shot gathers with one - way acoustic wave equation based on vrselrf, and verify the arithmetic by numerical simulation. concisely discuss the cause of the creation of evanescence and the problem of lateral amplitude discontinuity result from it. fourthly, use the reflectivity model, computed to describe the fracture model, with the formula of computation reflectivity based on elastic - acoustic approximation, and the wavelet model computed by the method, wavelet creation with fourier transform, we proposed, in conjunction with vrselrf wavefield extrapolation operator
第三，將頻率波數域穩定的變參考慢度rytov近似廣義屏波場延拓運算元（ vrselrf ）應用於疊前與疊后正演模擬、疊前與疊后深度偏移，對演算法應用中應注意的問題、適用范圍、性能等作了較為全面的論述；提出了基於vrselrf的單程聲波方程共炮記錄正演模擬和深度偏移快速演算法，並通過數值模擬試驗對演算法進行了驗證；簡要地討論了倏逝波的產生原因及其帶來的橫向振幅不連續性問題。The paper concentrates on seismic wave - field forward modeling and migration for the fractured reservoir. it researches the wavefield extrapolation operator for lateral variation of velocity, design four theoretical models and seven practical models with fracture and cavity. base on the progenitor, in the frequency - wavenumber domain with the pspi wavefield extrapolation operator and arithmetic of forward modeling and migration that applied lateral variation of velocity which is strong, the paper obtains the result of numerical simulation and the wavefield characteristic by the way of the forward modeling and depth migration of poststack seismic wavefield
本文圍繞縫洞儲層地震波場正演與偏移問題，研究了適用於橫向變速波場延拓運算元，建立了四個理論的縫洞模型和七個實際的縫洞模型，在總結、分析前人的研究成果的基礎上，利用適合橫向速度劇烈變化的相移加插值的波場延拓運算元，在頻率?波數域對上述的地質模型進行正演、偏移處理，最後得到了縫洞儲層地震波場的一些特徵。Leaving niagara falls, cross the new york upstate, arrive in boston, the state of massachusetts in the evening
中午前離開瀑布區，橫跨紐約上州，傍晚抵達波士頓，美國獨立戰爭起發地。Leave niagara falls before noon, cross the new york upstate, arrive in massachussets, visit the famous " yankee ' s candle company " museum and shop for candle goods
中午前離開瀑布區，橫跨紐約上州，傍晚抵達波士頓，美國獨立戰爭起發地。In order to study the uniqueness and complexity of reflection seismic pilot detecting technology in southern coalfield, and according to the southern coalfield stratigraphic features and characteristics of seismic waves observed, the thin dielectric model both transversely isotropic and anisotropic was set up
摘要南方煤礦薄層狀介質存在各向異性和橫向各向同性並存的情況，其煤層的物性條件及其賦存情況的幾何形態又有利於槽波的形成，且地層地質構造發育，瓦斯、水等災害嚴重，這些特徵造成了南方煤礦薄層狀介質中反射地震超前探測技術的復雜性和特殊性。2 ) the effects on waves conversion are stronger in rocks with dry fractures than that in rocks with water - filled fractures, and s - waves attenuate more rapidly in rocks with water - filled fractures. 3 ) the explosive point source which locates in anisotropic media can excites not only p - waves but also s - waves. 4 ) the properties of waves propagation were discussed and compared for several point sources with different source functions
結果表明： 1 ）平行排列裂縫造成的各向異性使波前變寬； 2 ）含乾裂縫巖石對波型轉化的影響比含充水裂縫巖石的大，橫波在含充水裂紋中傳播時衰減較快； 3 ）當介質存在各向異性時，爆炸點源產生的波不僅有縱波，還有橫波； 4 ）通過改變點源函數研究不同點源所產生波以及波型的轉換。The detection and reconstruction of wavefront by lateral shear interferometer ( lsi ) and hartmann wavefront sensor ( hws ) have been deduced analogically and simulated numerically
對橫向剪切干涉儀和哈特曼波前傳感器的波前探測和復原進行了類比推導和模擬計算。The differences between this method and other similar methods are : ( 1 ) the fast synthetic source record algorithm based on the wave theory is adopted in prestack depth migration. ( 2 ) the plane wave source is used in migration that is consistent with the velocity analysis method. ( 3 ) by using the controlled illumination, the distortion of the plane wave source wavefield due to the lateral velocity variation is avoided therefore the error of velocity analysis is reduced and ( 4 ) the practical velocity spectrum makes the interactive migration velocity analysis feasible and convenient
與其他類似偏移速度分析方法的不同點在於： （ 1 ）疊前深度偏移採用基於波動理論的快速合成震源記錄演算法； （ 2 ）偏移方法採用平面波震源，與速度分析方法一致； （ 3 ）應用控制照明技術，避免了因橫向變速而導致的平面波震源波場在傳播過程中的畸變，從而減小了速度分析的誤差； （ 4 ）實用的速度譜設計，使交互偏移速度分析可行且易於操作。This paper puts the value chain theory, which was founded by professor michael e ? porter, in the analysis of the value added activities of foreign trade companies, and puts forward three ways to remodel the value chain : value chain forward integration, backward integration and vertical integration. at the same time, the paper cites three representative instances to demonstrate the detail measurements foreign trade companies should use under different conditions
本文運用邁克爾?波特的價值鏈理論，通過對我國外貿公司價值活動的分析，提出了外貿公司再造價值鏈的方式：價值鏈的前向延伸、後向延伸和橫向進入，同時，結合我國外貿公司改革中的典型案例，論述了不同情況下，企業應該採取的具體措施。Abstract : a numerical investigation of three - dimensional separated flows about a hemisphere - cylinder is presented. the analysis has been restricted to transonic and laminar flows. results are given for the complex flow field structures including shock, boundary layer, separated flow, vertical flow and their mutual effects. the topological structures of the separated flow is shown
文摘:本文數值模擬了半球柱在跨音速、中等攻角時的粘性層流繞流，研究了流場中的復雜三維分離形態結構，其中包含流向與橫向的主分離、二次分離、以及激波邊界層的相互干擾，解釋了在球柱接合部精確捕獲的壓力波動與流動主分離、二次分離的影響關系，這個現象是前人的計算5 ， 6未捕捉到的。The software development for the studied methods is completed in the fortran and c language. after applying these new methods to the real data inversion, the better geology effect was obtained. it shows that the inversion based on the amplitude characteristic equation has better utility and wide development prospects
本文用fortran和c語言完成了所述方法的應用軟體研製工作，並結合實際資料進行了參數反演，取得了較好的效果，說明了用本文建立的振幅特徵方程進行橫向各向同性介質多波ava參數反演是可行的，且具有廣闊的發展前景。Numerical migration for typical models show that, in contrast to ray method, prestack wave motion migration can correctly image inhomogeneous media, and suppress multiple reflection wave effectively. prestack migration method presented in this paper should be developed to apply in observational teleseismic p waveform data, to study the inhomogeneity of crust and upper mantle
典型的介質模型數值分析表明，與射線方法相比，接收函數的波動方程疊前偏移能對橫向非均勻介質準確成像，不僅有較高的解析度，而且對多次波有較明顯的壓製作用。Twelve years ago : a us frigate fired warning shots across the bow of an iraqi oil tanker in the gulf of oman - - apparently the first shots fired by the united states in the persian gulf crisis
12年前，美國護衛艦開火示警伊拉克橫渡阿曼海灣的油輪- - -很顯然美軍的第一槍是波斯灣危機的導火索分享友人