Assessment of the CMD Mini-Explorer, a New Low-frequency Multi-coil Electromagnetic Device, for Archaeological Investigations
Assessment of the CMD Mini-Explorer, a New Low-frequency Multi-coil Electromagnetic Device, for Archaeological Investigations
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DOI：
10.1002/arp.1458
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发表时间：
2013-07-01
影响因子：
1.8
通讯作者：
Gaffney, Vince
中科院分区：
文献类型：
--
作者：
Bonsall, James;Fry, Robert;Gaffney, Vince
在本文中，我们评估了新型电磁 (EM) 系统 CMD Mini-Explorer 在爱尔兰和英国勘探考古特征的能力。 Mini-Explorer 是一款电磁探头，主要针对环境/地质勘探市场，用于管道和地质检测。长期以来，从其他电磁设备的使用来看，这种仪器可能适合浅层土壤研究和考古勘探。考古测量员特别感兴趣的是，Mini-Explorer 可同时从三个深度级别获取正交（电导率）和同相（相对于磁化率）数据。由于最大深度范围可能约为1.5m，因此可以对该范围内的底土进行全面分析。与所有电磁设备一样，测量不需要与地面接触，从而消除了在干旱期间经常困扰接地电阻数据的高接触电阻问题。 CMD Mini-Explorer 在许多地点的使用表明，它有潜力检测一系列考古特征，并产生高质量数据，这些数据在质量上可与标准接地电阻和磁力计技术获得的数据相媲美。理论上，在三个深度测量两种现象的能力表明，这种类型的仪器可以减少单一测量调查导致的不良结果的数量。这里报告的使用多深度设备识别埋藏考古的高成功率，该设备响应两种最常见的绘制地球物理现象，这对评估式调查具有影响。版权所有 (c) 2013 John Wiley & Sons, Ltd.
In this article we assess the abilities of a new electromagnetic (EM) system, the CMD Mini-Explorer, for prospecting of archaeological features in Ireland and the UK. The Mini-Explorer is an EM probe which is primarily aimed at the environmental/geological prospecting market for the detection of pipes and geology. It has long been evident from the use of other EM devices that such an instrument might be suitable for shallow soil studies and applicable for archaeological prospecting. Of particular interest for the archaeological surveyor is the fact that the Mini-Explorer simultaneously obtains both quadrature (conductivity') and in-phase (relative to magnetic susceptibility') data from three depth levels. As the maximum depth range is probably about 1.5m, a comprehensive analysis of the subsoil within that range is possible. As with all EM devices the measurements require no contact with the ground, thereby negating the problem of high contact resistance that often besets earth resistance data during dry spells. The use of the CMD Mini-Explorer at a number of sites has demonstrated that it has the potential to detect a range of archaeological features and produces high-quality data that are comparable in quality to those obtained from standard earth resistance and magnetometer techniques. In theory the ability to measure two phenomena at three depths suggests that this type of instrument could reduce the number of poor outcomes that are the result of single measurement surveys. The high success rate reported here in the identification of buried archaeology using a multi-depth device that responds to the two most commonly mapped geophysical phenomena has implications for evaluation style surveys. Copyright (c) 2013 John Wiley & Sons, Ltd.