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相关概念视频

Extraction: Partition and Distribution Coefficients01:14

Extraction: Partition and Distribution Coefficients

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The distribution law or Nernst's distribution law is the law that governs the distribution of a solute between two immiscible solvents. This law, also known as the partition law, states that if a solute is added to the mixture of two immiscible solvents at a constant temperature, the solute is distributed between the two solvents in such a way that the ratio of solute concentrations in the solvents remains constant at equilibrium.
For extracting a solute from an aqueous phase into an...
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Extraction: Advanced Methods00:56

Extraction: Advanced Methods

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Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is...
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IR Spectrum Peak Splitting: Symmetric vs Asymmetric Vibrations01:08

IR Spectrum Peak Splitting: Symmetric vs Asymmetric Vibrations

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Identical bonds within a polyatomic group can stretch symmetrically (in-phase) or asymmetrically (out-of-phase). Similar to hydrogen bonding, these vibrations also influence the shape of the IR peak. Generally, asymmetric stretching frequencies are higher than symmetric stretching frequencies. For example, primary amines exhibit two distinct IR peaks between 3300–3500 cm−1 corresponding to the symmetric and asymmetric N-H stretching, while secondary amines exhibit a single...
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Interference and Diffraction

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Interference is a characteristic phenomenon exhibited by waves. When two electromagnetic waves interact with their peaks and troughs coinciding, a resulting wave with enhanced amplitude is produced. This is known as constructive interference. In this case, the two waves interacting are in phase with each other.
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Atomic Emission Spectroscopy: Interference01:30

Atomic Emission Spectroscopy: Interference

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In atomic emission spectroscopy (AES), high-temperature atomizers excite a broad range of elements and molecules that generate complex emissions from sources such as oxides, hydroxides, and flame combustion products in the flame or plasma. Several strategies can be employed to minimize spectral interferences caused by overlapping emission lines or bands. These include increasing instrument resolution, choosing alternative emission lines, optimally placing the detector in low-background regions,...
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Variability: Analysis01:11

Variability: Analysis

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Measures of variability are statistical metrics that reveal the dispersion pattern within a dataset. They are pivotal in biostatistics, providing insights into the heterogeneity within health and biological data. Variability signifies the degree to which data points diverge from one another, helping researchers understand the potential range of values and associated uncertainty within the data.
The range is a simple measure of variability, indicating the difference between the highest and...
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Updated: Jun 6, 2025

Data Processing Methods for 3D Seismic Imaging of Subsurface Volcanoes: Applications to the Tarim Flood Basalt
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在地震数据中消除强干扰,使用多变量变化模式提取.

Zhichao Yu1, Yuyang Tan2, Yiran Lv1

  • 1Key Laboratory of Deep Petroleum Intelligent Exploration and Development, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China.

Sensors (Basel, Switzerland)
|November 27, 2024
PubMed
概括
此摘要是机器生成的。

本研究引入多变量变化模式提取 (MVME) 来消除地震数据中的机械振动干扰. 新方法有效地抑制噪音,提高信号质量和分析能力.

关键词:
消除干扰 消除干扰机械振动是一种机械振动.多变量变量模式提取多变量变量地震数据 地震数据

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科学领域:

  • 地质物理学 地质物理学
  • 信号处理 信号处理

背景情况:

  • 地震数据经常受到机械振动和电力设施干扰的影响,降低了信号噪声比 (S/N).
  • 传统的噪声抑制方法,如隙过器和时间频率转换器,与非静止干扰作斗争,并可能扭曲有效的信号.

研究的目的:

  • 开发一种有效的方法来消除地震数据中的机械振动干扰.
  • 为了提高信号与噪声比 (S/N),并改进地震信号分析.

主要方法:

  • 扩展变化模式提取 (VME) 到多变量形式 (MVME) 用于同时分析多个地震痕迹.
  • 利用基于同步挤压的时间频率分析来识别干扰频率.
  • 应用MVME从地震数据中提取和删除识别的干扰模式,使用最佳平衡因子.

主要成果:

  • 使用合成数据,分析参数影响的证明有效性.
  • 成功地将MVME方法应用于现场地震数据集.
  • 与传统技术相比,实现了对机械振动干扰的优越抑制.

结论:

  • 拟议的MVME方法显著改善了地震数据中的S/Ns.
  • MVME 增强了地震信号的偏振分析.
  • 这种技术为处理地震污染数据提供了强大的解决方案.