Automatic thrust/fault and edge location with gravity data across the Shillong plateau and Mikir hill complex in northeastern India using the most positive and most negative curvature interpretation

IF 1.6 3区 地球科学 Q3 GEOCHEMISTRY & GEOPHYSICS
Gopal K Ghosh
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引用次数: 0

Abstract

Northeast India encompasses numerous thrusts, faults, and lineaments with undulated surface topography and is one of the utmost tectonically active regions in the world. Owing to the results of the collision of the Indian Plate under the Tibetan Plate and Burmese Plate, respectively, this area has affected the highest seismic potential zone-V, triggering many earthquakes. The current study area is located in and around the Shillong plateau, Mikir Hills, Naga Hills, Arakan-Yoma fold belt, Bengal basin, and Mishmi hills of the Himalayan foothills and that fall under the northeast of India. The thrusts and faults information available in this area are very scanty due to limited availability of geoscientific data and revealing seismic survey. Henceforth, it is necessary to get enhanced geoscientific learning for a better understanding of thrusts, faults, and lineaments information, the most positive and most negative curvature attribute analyses have been carried out using ground gravity data in this area. The significant derived results from this study encourage supplementary findings of thrust, fault, and lineament information, which also correlate well with the previously found results of 3D Euler deconvolution and source edge detection. Although, gravity data interpretation has its own limitations, however, the current derived results using the latest curvature analysis approach utilizing gravity data show realistic invigorated solutions for a better understanding of the thrust, fault, and lineament locations in this area.
利用重力数据对印度东北部的志陇高原和米基尔丘陵群进行推力/断层和边缘自动定位,采用最正和最负曲率解释法
印度东北部包括众多推力、断层和线状构造,地表地形起伏不定,是世界上构造最活跃的地区之一。由于印度板块分别与西藏板块和缅甸板块碰撞,该地区成为地震潜势最高的 V 区,引发了许多地震。目前的研究区域位于喜马拉雅山麓的志隆高原、米基尔丘陵、那加丘陵、阿拉干-山脉褶皱带、孟加拉盆地和米什米丘陵及其周边地区,属于印度东北部。由于地球科学数据和揭示性地震勘测有限,该地区的推力和断层信息非常少。因此,有必要加强地球科学学习,以便更好地了解推力、断层和线状信息,我们利用该地区的地面重力数据进行了最正和最负曲率属性分析。这项研究得出的重要结果鼓励了对推力、断层和线状信息的补充发现,这也与之前发现的三维欧拉解卷积和源边缘检测结果密切相关。虽然重力数据解释有其自身的局限性,但目前利用重力数据的最新曲率分析方法得出的推导结果显示了现实可行的解决方案,有助于更好地了解该地区的推力、断层和线状构造位置。
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来源期刊
Journal of Geophysics and Engineering
Journal of Geophysics and Engineering 工程技术-地球化学与地球物理
CiteScore
2.50
自引率
21.40%
发文量
87
审稿时长
4 months
期刊介绍: Journal of Geophysics and Engineering aims to promote research and developments in geophysics and related areas of engineering. It has a predominantly applied science and engineering focus, but solicits and accepts high-quality contributions in all earth-physics disciplines, including geodynamics, natural and controlled-source seismology, oil, gas and mineral exploration, petrophysics and reservoir geophysics. The journal covers those aspects of engineering that are closely related to geophysics, or on the targets and problems that geophysics addresses. Typically, this is engineering focused on the subsurface, particularly petroleum engineering, rock mechanics, geophysical software engineering, drilling technology, remote sensing, instrumentation and sensor design.
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