.png){kind=icon}
返回
Refraction wavefield migration
.png){kind=icon}
PRE
AI
DOI：10.1190/geo2020-0141.1.png)
.png){kind=icon}
原文求助.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
Refraction methods are often applied to model and image near-surface velocity structures. However, near-surface imaging is very challenging, and no single method can resolve all of the land seismic problems across the world. In addition, deep interfaces are difficult to image from land reflection data due to the associated low signal-to-noise ratio. Following previous research, we have developed a refraction wavefield migration method for imaging shallow and deep interfaces via interferometry. Our method includes two steps: converting refractions into virtual reflection gathers and then applying a prestack depth migration method to produce interface images from the virtual reflection gathers. With a regular recording offset of approximately 3 km, this approach produces an image of a shallow interface within the top 1 km. If the recording offset is very long, the refractions may follow a deep path, and the result may reveal a deep interface. We determine several factors that affect the imaging results using synthetics. We also apply the novel method to one data set with regular recording offsets and another with far offsets; both cases produce sharp images, which are further verified by conventional reflection imaging. This method can be applied as a promising imaging tool when handling practical cases involving data with excessively weak or missing reflections but available refractions.
Keyword:
GREENS-FUNCTION
INTERFEROMETRY
RETRIEVAL
ARRIVALS
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
.png){kind=icon}
Direct imaging of monolayer and surface atomic structure by angular distribution Auger microscopy
OAAI
OAAI分享收藏Short-term outcomes of radical excision vs. phenolisation of the sinus tract in primary sacrococcygeal pilonidal sinus disease: a randomized-controlled trial原发性骶尾部藏毛窦疾病中，窦道根治性切除术与苯化处理术的短期疗效比较：一项随机对照试验OAAI
OAAI分享收藏分享收藏
查看更多内容