Time-lapse geophysical investigations over a simulated urban clandestine grave.
Time-lapse geophysical investigations over a simulated urban clandestine grave.
复制标题
对模拟城市秘密坟墓进行延时地球物理调查。
DOI：
10.1111/j.1556-4029.2008.00884.x
复制
发表时间：
2008
影响因子：
1.6
通讯作者：
Pringle JK
中科院分区：
文献类型：
--
作者：
Pringle JK
一个模拟的地下浅坟墓是在一个异质的、地面制成的城市环境中创建的，在这个环境中，衣物、塑料树脂、人体骨骼、动物产品和生理盐水被放置在解剖正确的位置，并重新覆盖到地面。进行了一系列重复的(时间推移的)近地表地球物理测量：(1)埋葬前(作为对照)，(2)埋葬后1个 月，(3)埋葬后3个 月。使用了一系列不同的地球物理技术，包括：整体地面电阻率和电导率、磁通门梯度法和高频探地雷达(GPR)、土壤磁化率、电阻率层析成像(ERT)和自然电位(SP)。体电阻率和SP被证明是初始墓穴位置的最佳选择，而ERT剖面图和探地雷达水平“时间切片”显示了最佳的空间分辨率。研究表明，在复杂的城市人造地面环境中，在对已识别的地球物理异常进行探地雷达和ERT后续测量之前，应收集初始电阻率测量。
A simulated clandestine shallow grave was created within a heterogeneous, made‐ground, urban environment where a clothed, plastic resin, human skeleton, animal products, and physiological saline were placed in anatomically correct positions and re‐covered to ground level. A series of repeat (time‐lapse), near‐surface geophysical surveys were undertaken: (1) prior to burial (to act as control), (2) 1 month, and (3) 3 months post‐burial. A range of different geophysical techniques was employed including: bulk ground resistivity and conductivity, fluxgate gradiometry and high‐frequency ground penetrating radar (GPR), soil magnetic susceptibility, electrical resistivity tomography (ERT), and self potential (SP). Bulk ground resistivity and SP proved optimal for initial grave location whilst ERT profiles and GPR horizontal “time‐slices” showed the best spatial resolutions. Research suggests that in complex urban made‐ground environments, initial resistivity surveys be collected before GPR and ERT follow‐up surveys are collected over the identified geophysical anomalies.