Magnetic imaging of a late Bronze Age tumulus in France before and during excavation
Magnetic imaging of a late Bronze Age tumulus in France before and during excavation
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法国青铜时代晚期古墓挖掘前和挖掘过程中的磁成像
DOI：
10.1190/1.1481254
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发表时间：
2002
期刊：
影响因子：
3.3
通讯作者：
Walter Reinhard
中科院分区：
文献类型：
--
作者：
H. V. D. Osten;Bruno Chaume;Walter Reinhard
法国塞纳河畔夏蒂隆地区正在进行地球物理测量，以检查和绘制史前定居点和通穆利(Tumuli)的结构(最初高达5米，但现在几乎是水平的墓丘)。这里讨论的磁性调查是为了探测拉丁晚期(公元前100-50年)墓地内的考古结构，特别是青铜时代晚期圆形手推车的挖掘前记录。在挖掘过程中，还进行了额外的调查，以分析直接地下土层对来自更深层次考古特征的磁异常的影响。
其他雷达调查使用了GSSI的500 MHz天线和SIR-2系统，清楚地显示了考古结构，但这里提出的结果将集中在磁性数据上。
1967年，对一个更大的拉特内晚期墓地内的两个家族坟墓进行了考古检查，这些墓地可以追溯到公元前300年到公元前75年。这次地磁调查的目的是为了发现更多的坟墓，并记录整个墓地的结构。使用Geoscan FM36梯度计，上探头距地表0.9米，下探头距地面0.4米。为了减少或消除背景噪声和调查区域附近金属物体的影响，最好使用梯度计。大多数考古异常很难达到超过10纳秒(NT)的值；因此，选择0.25m的样本和导线间隔作为…
Geophysical surveying is taking place in the Chatillon-sur-Seine area in France to examine and map prehistoric settlements and the structure of tumuli (grave-mounds which originally reached a height of up to 5 m but which are now almost level). The magnetic survey discussed here was conducted to detect archaeological structures within a late La Tene (100-50 bce) necropolis, in particular the preexcavation recording of a late Bronze Age round barrow. During the excavation, additional surveys were carried out to analyze the influence of immediate subsurface soil layers on the magnetic anomalies originating from the deeper archaeological features.
Additional radar surveys made use of a 500 MHz antenna and a SIR-2 system from GSSI which clearly showed the archaeological structures, but the results presented here will focus on the magnetic data.
Two family graves within a larger late La Tene necropolis dating to between 300 and 75 bce were archaeologically examined in 1967. The objective of the present geomagnetic survey was to find more graves and record the structure of the whole necropolis. A Geoscan FM36 gradiometer was used, the upper probe being at a distance of 0.9 m from the surface, the lower probe at 0.4 m. The use of a gradiometer is preferable in order to reduce or cancel the effects of background noise and of metallic objects near the area of investigation. Most archaeological anomalies hardly achieve a value of more than 10 nanotesla (nT); therefore, sample and traverse intervals of 0.25 m were chosen …