.png){kind=icon}
返回
Coherent wavefield subtraction for diffraction separation
.png){kind=icon}
OA
AI
DOI：10.1190/GEO2018-0368.1.png)
.png){kind=icon}
.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
Diffractions encode subwavelength information and superior illumination but are weak in amplitude and strongly interfere with the more dominant reflected wavefield. Accordingly, the successful separation of diffractions in geophysical applications still forms a major direction of research. Confronting this challenge, an automatable and versatile framework for the separation of interfering wavefields through a sequence of coherent data summation and subtraction is proposed. In contrast to other studies using coherence measurements, the method specifically targets reflected contributions, which are normally favored in automated summation schemes, and it adaptively subtracts the resulting reflection stack from the input data. Complementing this natural selectivity of stacking, a variety of wavefront filters is presented, which can be derived from the local maximization of the semblance norm and additionally inform the subsequent separation step. Complex 2D and 3D synthetic pre- and poststack seismic examples together with a ground-penetrating radar field-data example suggest that the presented scheme can be applied to a variety of data configurations and bears the potential to uncover an extremely faint but surprisingly rich diffraction background that was previously not accessible for dedicated processing.
Keyword:
REFLECTION-SURFACE STACK
DIFFERENTIAL EVOLUTION
VELOCITY ANALYSIS
OPTIMIZATION
ENHANCEMENT
ATTRIBUTES
AI总结
对已上传原文的论文进行重点信息的提取，主要内容包括：简要概述、研究摘要、背景介绍、关键亮点、图文解析、展望与总结。
期刊
IF:
3.2
论文数:
8.4K
被引数:
3.3W
机构
引用论文
Bacterial cGAS-like enzymes produce 2′,3′-cGAMP to activate an ion channel that restricts phage replication细菌cGAS样酶产生2 ′，3 ′-cGAMP激活限制噬菌体复制的离子通道.png)
OAAI
IF0
OAAI分享收藏Plasmolysis effects and osmotic potential of two phylogenetically distinct alpine strains of Klebsormidium (Streptophyta)Protoplasma
ProtoplasmaIF0
PREAI
分享收藏Diffraction imaging by focusing-defocusing: An outlook on seismic superresolutionGEOPHYSICS
GEOPHYSICSIF3.2
PREAI
分享收藏One Solution for Two Challenges: The Lizard Microlophus atacamensis Avoids Overheating by Foraging in Intertidal ShoresPLoS ONEOAAI
PLoS ONEIF0
OAAI分享收藏
查看更多内容