Integration of EM techniques for mapping buried historical harbours: a case study from the archaeological site of Tell el-Rub'a, Egypt

IF 1.6 3区 地球科学 Q3 GEOCHEMISTRY & GEOPHYSICS Journal of Geophysics and Engineering Pub Date : 2023-03-22 DOI:10.1093/jge/gxad016
A. Mohamed, A. Beshr, G. Xue, G. El-Qady
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引用次数: 1

Abstract

This study focuses on the integrated application of the frequency-domain (terrain conductivity, TC) and transient electromagnetic (TEM) methods to map an ancient riverine harbour (port) at the Egyptian archaeological site of Tell el-Rub'a (prehistoric Mendes). Fifty-one TC profiles were measured using six EM frequencies and sixteen TEM soundings were performed at the selected site. The apparent conductivity maps derived from the TC survey enabled defining the lateral extension of the harbour basin and its edges to penetration depths ranging between 12–30 m. The vertical extension of the harbour basin was determined using the TEM inversion. Three layers were defined: the topsoil, the conductive silty clay infill, and the resistive sand bedrock. The bedrock is found at depths ranging from 19 to 31 m. The TC and TEM results were combined to form a 3D image of the harbour basin. This study confirms the existence of Mendes harbour and demonstrates the effectiveness of the TC and TEM methods for such archaeological studies.
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集成EM技术绘制埋藏的历史港口:来自埃及Tell el-Rub'a考古遗址的案例研究
本研究侧重于频域(地形电导率,TC)和瞬态电磁(TEM)方法的综合应用,以绘制埃及Tell el-Rub'a考古遗址(史前门德斯)的古代河岸港口(港口)地图。使用6个EM频率测量了51个TC剖面,并在选定的地点进行了16次TEM探测。TC调查得出的表观电导率图能够确定港池的横向延伸及其边缘,穿透深度在12–30m之间。港池的垂直延伸是使用TEM反演确定的。定义了三个层:表层土、导电粉质粘土填充物和电阻砂基岩。基岩的深度范围为19至31米。TC和TEM结果结合在一起形成了港口盆地的3D图像。这项研究证实了门德斯港的存在,并证明了TC和TEM方法在此类考古研究中的有效性。
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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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