查询词典 seismic

The findings: with the apparent dominant frequency of the Ricker wavelet rising, the detection SNR will get worse gradually, it is obvious that the variety of the SNR is slower during the portion of high frequency than during the portion of low frequency; in the usual range of seismic prospecting frequency, the SNR of the chaotic oscillator detection system could partially make up the amplitude attenuation aroused by the transmit of the seismic wave; the results could provide help for detecting the event constituted by aberrant wavelets.

本文以Ricker子波模拟地震子波，研究Ricker子波视主频变化的相应检测效果。研究结果：随着Ricker子波视主频的升高，检测SNR逐渐变差，在高频部分SNR的变化明显比低频部分缓慢；在通常地震勘探频率范围内，混沌振子系统检测SNR有可能部分补偿由于地震波传播引起的幅度降低；为检测由畸变子波构成的同相轴提供一定的可能。

For example, based on site seismotectonic conditional and seismic influence intensity data, seismic risk of six dam sites are estimated in West Anhui Province and the results were presented about 50a, P=10%.

本文以皖西六大水库坝址为例，考虑地震构造条件，进行场地影响烈度地震危险性分析，给出50年P=10%的分析结果。

For example, by using the functions of GIS for map layers piling and combination, data query and comprehensive analysis, the seismotectonic map of Eastern Asia Region is compiled, the potential seismic source area of the region is delineated and their seismic activity parameters are obtained respectively. On the bases of these, the peak ground accelerations with probability of exceedence of 10%in 50 years for Eastern Asian Region are computed and assessed by 1°×1°.

以东亚地区地震危险性分析为例，在GIS平台下，利用GIS的图层叠加和拼接、空间数据查询和综合分析功能，编制了东亚地区地震构造图，划分了该区的潜在震源区，并得到了各潜在震源区相应的地震活动性参数，在此基础上，按1°×1°计算和分析了东亚地区未来50年超越概率为10％的峰值地面加速度。

Because of the stratigraphic conditions of multi-lithologies and thin-bed association, unstability of lithofacies in the vertical and lateral direction, and the particalar conditions of seissmic geology in Inland Basins, Western China, a stratigraphic model of sedimentary facies in which there are many theoretical reflecting seismic interface does not completely display on the seismic section, especially the some the most important stratigraphic information such as toplap, onlap, progradation, erosional truncation and fill of channal, divergent, shingled, ect.

本文在研究了9类沉积相及相组合地层模型的地震模拟记录后证明：现今流行的在地震剖面上划分地震相进而应用国外海相地层反射模式再转换为沉积相这一所谓&相面&方法完全不适用于西部陆相盆地沉积相地层模型的特点，作者首次开辟了用速度参数，合成地震记录、二维地层模型技术研究西部盆地地下沉积相的新途经。

The focal mechanisms of moderate-small earthquakes are calculated tentatively using digital seismic wave data in some provincial digital seismic networks based on the program of focal mechanism determinations combing the first motion of P, SV and SH waves with their amplitude ratio, which is recently developed by Snoke.

引言 强震前震源及附近地区中小地震的震源机制解是否变化，一直是地震预测比较关心的问题[1]。由P波初动求取地震的震源机制解是地震学中一个常用的方法，但这种方法要求所计算的地震被很多台站记录到[2]。

Seismic sedimentology takes full advantage of the lateral resolution of 3-D seismic data, its key techniques includes the building of sequence stratigraphic framework and generation of stratal slice.

地震沉积学充分利用了三维地震数据的横向分辨力，其关键技术是层序地层框架的建立和地层切片体的生成。

By using 3D seismic and logging data, seismic sedimentology was studied in Olmos formation of upper Cretaceous, Gold River North Oilfield, Webb County, south Texas, and nine fourth order sequences were identified with the technique of 90°-phase data and stratal slices.

利用三维地震资料和测井资料，结合90°相位和地层切片技术，对美国南得克萨斯地区Webb县Gold River North 油田上白垩统Olmos组进行地震沉积学研究，识别出9个四级层序。

The 3-D coherency cube is a recently developed seismi c interpretation t echnique. It uses the similarity of seismic signals between adjacent traces in 3 -D seismic volume to describe the lateral stratal and lithologic inhomogeneity.

三维相干数据体技术是利用三维地震数据体中相邻道之间地震信号的相似性来描述地层、岩性的横向非均匀性。

A new method of post-stack seismic forward modeling under complex surface conditions was proposed from the point of seismic modeling It used the theory of submerse topography and zero-velocity layer, the new method firstly transformed the original surfaceto a level , and got a new model.

基于波动方程基准面延拓的偏移方法理论，从地震波场正演模拟的角度出发，提出了一种新的适用于起伏地形的地震叠后正演方法。

On the basis of that,the authors of this paper consider that it is better to determine the instability of seismic source process by use of the syzygial tide than by use of the semi-diurnal tide only;the method can avoid many complex problems of seismic sources without affecting the efficacy of earthquake prediction.

由此作者认为用朔望潮比单纯用半日潮来判断震源过程的不稳定性更好，它可以回避震源地方的很多复杂问题而不影响预报地震的效能。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失