使用希尔伯特变换将VLF-EM数据转换为看似电阻,并将其应用于印尼班敦县平吉萨里浅层故障调查
Elfitra Desifatma1, Prihandhanu Mukti Pratomo1, Enjang Jaenal Mustopa1
1Physics of Earth and Complex Systems, Physics Department, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung, Jl. Ganesa 10, Bandung, Indonesia.
Heliyon
|May 22, 2024
概括
希尔伯特变换增强了非常低频电磁 (VLF-EM) 数据的解释,准确地检测地质断层. 该方法使用电阻横截面精确地绘制断层位置和深度,改进了地质调查.
科学领域:
- 地质物理学 地质物理学
- 电磁方法 电磁方法
背景情况:
- 地质断层检测对于基础设施开发和资源勘探至关重要.
- 传统的地质物理方法可能面临复杂的地下结构的解释挑战.
研究的目的:
- 为了评估希尔伯特转换在处理非常低频电磁 (VLF-EM) 数据中的有效性,用于故障调查.
- 将基于希尔伯特变换的解释与传统的过技术进行比较 (Fraser和Karous-Hjelt).
主要方法:
- 在印度尼西亚Pinggirsari村区收集VLF-EM数据.
- 应用希尔伯特转换来将VLF-EM数据转换为表面电阻.
- 使用Occam的反转来创建电阻截面的表面电阻数据的反转.
- 使用Fraser和Karous-Hjelt过器进行定性解释进行比较分析.
主要成果:
- 希尔伯特变换成功将VLF-EM数据转换为可解释的表面电阻.
- 电阻截面准确地划定了断层位置,与地质地图相对应.
- 在大约150米深处发现了断层,在马拉巴尔岩和瓦林金贝迪尔岩之间有明显的电阻对比.
结论:
- 希尔伯特转换是澄清VLF-EM数据解释的一个有价值的工具,使精确的故障检测.
- 该技术提供了定量电阻参数,用于改进地质地下分析.
- 该研究证实了希尔伯特转换的VLF-EM数据在识别研究区域的地质结构中的实用性.
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