reverse-time migration造句
例句與造句
- Prestack migration is performed by reverse - time migration method based on maxwell ' s equations using time - domain finite - difference method
疊前偏移用時(shí)間域有限差分求解麥克斯韋方程組的逆時(shí)偏移方法實(shí)現(xiàn)。 - Compared with the conventional finite - difference method on the fixed grid - size rectangular grids , the new method can be more cost - effective in complex models . numerical tests for both seismic modeling and reverse - time migration are performed on various theoretical models and a physical experiment
用該剖分方法得到的網(wǎng)格在各速度層內(nèi)的空間步長(zhǎng)是不同的，而全區(qū)域上的時(shí)間步長(zhǎng)卻近于恒定，因此在復(fù)雜模型上，本文方法的計(jì)算效率要高于傳統(tǒng)的矩形網(wǎng)格差分方法。 - Prestack migration method , based on wave motion equation , is also developed for receiver function , and compared with ray method . both p - to - s conversion wave and direct p phase contained in receiver function are migrated and imaged by reverse - time migration for data gather including all receiver functions recorded in all seismological stations for one event , and imaging profile is finally obtained by stacking for all events
本文還在接收函數(shù)射線反投影疊加成像的基礎(chǔ)上，提出了一種基于波動(dòng)方程的接收函數(shù)疊前偏移成像方法，將同一事件接收函數(shù)中的轉(zhuǎn)換波和直達(dá)p波震相以各自的速度向深度方向逆時(shí)延拓成像，并通過(guò)不同慢度接收函數(shù)的疊加，得到最終的偏移成像結(jié)果。 - A new finite - difference method is developed for seismic modeling and reverse - time migration based upon the voronoi cell construction on irregular grids . curved velocity boundaries and irregular earth surface can be accurately represented using the irregular grid implementation . therefore the modeled and migrated results can be more accurate , and meanwhile , the efficiency is still preserved using an explicit finite - difference scheme
本文的方法可以實(shí)現(xiàn)任意非規(guī)則網(wǎng)格上的顯式差分計(jì)算，因此該方法在保持了傳統(tǒng)的矩形網(wǎng)格差分算法簡(jiǎn)單、高效特點(diǎn)的同時(shí)，又能精確地描述彎曲界面和起伏地表，提高了有限差分地震模擬和偏移結(jié)果的精度。 - It's difficult to find reverse-time migration in a sentence. 用reverse-time migration造句挺難的