死海断层震积岩扫描电镜图像自动分析软沉积物微观结构

IF 1.9 3区 地球科学 Q1 GEOLOGY
Alona Balaban-Fradkin, Shalev Siman-Tov, Shmuel Marco, Eyal Heifetz
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引用次数: 0

摘要

死海地震岩是世界上最长的地震记录。地震岩表现为变形层,包裹在未变形层之间,这些层由交替的毫米厚薄层组成,每年都有成对的冬季碎屑和夏季蒸发文石。了解控制其形成的物理条件将有助于从变形特征中恢复引起地震的特性。实现这一目标的第一步是了解地震岩的微观结构。为此,对死海盆地沉积物的扫描电子显微镜图像进行了分析,以提取其孔隙和粒度。采用图像处理技术来确定变形层和未变形层的微观物理性质与经典劳动密集型仪器的结果基本一致。然而,图像处理分析提供了更详细的无偏信息。已经开发了一个基于MATLAB的代码,作为一个现成的软件包,它可以在任何其他软沉积物露头上轻松实现,以从扫描电子显微镜图像中分析沉积物微观物理性质。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Determining the microstructure of soft sediments by automatic analysis of scanning electron microscope images of the Dead Sea fault seismites

Determining the microstructure of soft sediments by automatic analysis of scanning electron microscope images of the Dead Sea fault seismites

The Dead Sea seismites comprise the worlds longest record of earthquakes. The seismites appear as deformed layers enclosed between undeformed layers of alternating millimetre-thick laminae with annual pairs of winter detritus and summer evaporitic aragonite. Understanding the physical conditions that govern their formation will promote the recovery of the causative earthquake properties from the deformation character. The first step towards this goal is understanding the microscopic structure of the seismites. To this end, scanning electron microscope images of the Dead Sea Basin sediments were analysed to extract their pore and grain sizes. The implementation of image processing techniques to determine the microscopic-scale physical properties of the deformed and undeformed layers are in general agreement with results from classical labour-intensive instruments. However, the image processing analyses provide more detailed unbiased information. A MATLAB-based code has been developed as a ready-to-use package, which can be easily implemented on any other occurrence of soft sediment outcrops to analyse sediment microscopic-scale physical properties from scanning electron microscope images.

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来源期刊
CiteScore
4.10
自引率
16.70%
发文量
42
审稿时长
16 weeks
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