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Ricker wavelet 地震

WebMar 21, 2015 · Errors in the time-depth curve will propagate into your extracted wavelet. What you can do is to first approximate the real wavelet with a simple zero-phase phase wavelet extracted from the autocorrelation of the seismic data (or you can use a Ricker wavelet of a reasonable dominant frequency if you want) and make a synthetic … WebJan 1, 2015 · The Ricker wavelet has been widely used in the analysis of seismic data, as its asymmetrical amplitude spectrum can represent the attenuation feature of seismic wave …

地震波阻抗反演和储层预测实用课件 - 百度文库

WebOct 1, 2015 · INTRODUCTION. The Ricker wavelet is a well-known symmetrical waveform in the time domain (Ricker 1953 ). In order to better represent practically observed non … WebRicker子波是地震信号分析处理中最常用的地震子波形式，其数学模型为. 图1为Ricker子波示意图，其主频是20 Hz，延迟时间为0.2 s，采样频率为200 Hz/s。可以看出，时域波形和频谱峰值分别对应信号时延和主频。另外，Ricker子波时域和频域都具有紧支性，且能量有限。 running shoes with 4mm heel to toe drop https://legendarytile.net

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WebThe Ricker wavelet is theoretically a solution of the Stokes differential equation, which takes into account the effect of Newtonian viscosity, and is applicable to seismic waves propagated through viscoelastic homogeneous media. In this paper, we defined the time-domain breadth and the Web小波在奇异性信号的检测上具有独特的优势，在图像边缘检测、网络异常检测、地震异常与语音异常识别等领域有着广泛地应用[1-5]。 然而用不同的小波处理相同的信号数据序列有着不同的处理结果，为了取得更好的处理结果， Mallat[6]针对图像边缘提取发明了 ... WebMay 4, 2024 · In continuous time, the Ricker wavelet is given by the second derivative of the Gaussian function (Clay, 1990 [3], p. 285): ( 60) The parameter b is called the wavelet … scc online search

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Ricker wavelet 地震

geophysics - How do we convert the seismic trace wavelet to zero phase …

WebOct 11, 2024 · Ricker通过地震波动方程推导发现，震源激发的脉冲信号在向下传播的过程中，由于大地的吸收衰减等作用，不再是脉冲信号，而是地震子波。 Ricker后来提出了一个 … In mathematics and numerical analysis, the Ricker wavelet is the negative normalized second derivative of a Gaussian function, i.e., up to scale and normalization, the second Hermite function. It is a special case of the family of continuous wavelets (wavelets used in a continuous wavelet transform) known as Hermitian wavelets. The Ricker wavelet is frequently employed to mo…

Ricker wavelet 地震

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WebRicker wavelet are also actively used when computational intelligence techniques are used for processing seismic data; see, e.g., [6]. Specifically, in line with Ricker’s suggestion, … Web基于频谱的两种品质因子提取方法对比分析. 为了说明RCS法与泰勒近似法两种新的品质因子反演方法的特点及优越性，特设计理论模型计算进行分析与对比。. 3.1 三种方法的对比. 设计一个六层介质模型，为方便比较，所选模型具有较大地层厚度，模型参数见表1 ...

WebFeb 8, 2024 · 特殊 地震子波雷克子波 合成 matlab 代码. 地震子波，雷克子波生成matlab代码。. 雷克子波是地震子波中的一种。. 由震源激发、经地下传播并被人们在地面或井中接收到的地震波通常是一个短的脉冲振动，称该振动为振动子波。. 子波一般是物理可实现的，特别是 … WebThe basic wavelet used in this study is expressed as a product of the Gaussian function and the complex exponential function. To extract the characteristic element of original wave including the pulse-like ground motion causing the permanent displacement, a wavelet set defined as the linear combination of basic wavelets is used.

WebApr 12, 2024 · The time step of source wavelet is 0.05 μ s, and the calculation time is 40 μ s. We use the same Ricker wavelet in two numerical simulations, as illustrated in Figure 4 (a). The spectrum of the source wavelet is shown in Figure 4 (b). The peak frequency is 0.5 MHz and the -3 dB bandwidth range is about 0.27MHz to 0.8MHz. Web地震波阻抗反演和储层预测实用课件. • 地震频带以外的波阻抗在反演的过程中会丢失，或者原始数据资料中缺失这些频率。. • 地震数据的带限严重影响地震资料及其波阻抗反演的分辨率. • 地震反演的主要目的就是把地震反射数据转换成定量的岩性数 据 ...

WebJul 3, 2024 · 6- Wavelet & Convolution. In reflection seismology, it is assumed that the seismic data we record on the surface is the reflection of energy which is convolved (masked) with wavelet. From various wavelets, Ricker is one of the most common types as it is zero phase and favorable for seismic interpretation tasks.

WebJun 23, 2024 · of Ricker wavelet with center frequency of 0.4 Hz. 2 数据分析. 由于采用Ricker子波作为震源时间函数，激发的地震波主要位于中心频率附近，因此本文采用同一无量纲频率下，分别计算盆地模型和基岩半空间模型的各点的速度时程的峰值。 scc online legalWebExample Ricker wavelet, as plotted by WolframAlpha. [1] Sometimes the period (somewhat erroneously referred to occasionally as the wavelength) is given as 1/ f, but since it has mixed frequencies, this is not quite correct, and for some wavelets is not even a good approximation. In fact, the Ricker wavelet has its sidelobe minima at. scc online mootWebGravity Flow Pipe. Reinforced Concrete Pipe is the most readily available and most cost-efficient of the concrete pipe shapes available. Rinker Materials manufactures a complete … scc online newsletterWebOct 1, 2015 · INTRODUCTION. The Ricker wavelet is a well-known symmetrical waveform in the time domain (Ricker 1953).In order to better represent practically observed non-Ricker forms of seismic signals (Hosken 1988), the symmetric Ricker wavelet is generalized to be asymmetrical.. While the Ricker wavelet is the second derivative of a Gaussian function, … scconnect gov.sgWebウェーブレット（英: wavelet ）やマザーウェーブレット（英: mother wavelet ）とは、数学において、局在する波、つまり、有限の長さの波もしくは速やかに減衰する波の事。 ファーザーウェーブレット（英: father wavelet ）とは、多重解像度解析にて使われる、マザーウェーブレット関数とセットで ... scconnect customshttp://en.dzkx.org/article/doi/10.6038/cjg2024L0143 scc online formWebLike Ricker and Ormsby wavelets, a Klauder wavelet (fig 5) is symmetrical about a vertical line through its central peak at time zero. A Klauder wavelet represents the autocorrelation of a linearly swept frequency- modulated … scc online shop