Rezos Mary M, Schultz John J, Murdock Ronald A, Smith Stephen A
Department of Anthropology, University of Central Florida, 4000 Central Florida Blvd., Orlando, FL 32816, USA.
J Forensic Sci. 2011 Sep;56(5):1289-95. doi: 10.1111/j.1556-4029.2011.01802.x. Epub 2011 May 10.
Forensic personnel generally use basic all-metal detectors for weapon searches because of their ease of use and cost efficiency. For ferromagnetic targets, an alternative easy to use and low-cost geophysical tool is a magnetic locator. The following study was designed to demonstrate the effectiveness of a common, commercially available magnetic locator in forensic weapon searches by determining the maximum depth of detection for 32 metallic forensic targets and testing the effects of metallic composition on detection. Maximum depth of detection was determined for 16 decommissioned street-level firearms, six pieces of assorted scrap metals, and 10 blunt or bladed weapons by burying each target at 5-cm intervals until the weapons were no longer detected. As expected, only ferromagnetic items were detected; weapons containing both ferromagnetic and nonferromagnetic components were generally detected to shallower depths. Overall, the magnetic locator can be a useful addition to weapon searches involving buried ferromagnetic weapons.
法医人员通常使用基本的全金属探测器进行武器搜查，因为它们易于使用且成本效益高。对于铁磁目标，一种易于使用且低成本的地球物理工具是磁定位器。以下研究旨在通过确定32个金属法医目标的最大探测深度并测试金属成分对探测的影响，来证明一种常见的商用磁定位器在法医武器搜查中的有效性。通过将每个目标以5厘米的间隔掩埋，直到不再检测到武器，确定了16支退役的街头枪支、六块各种废金属以及10件钝器或利刃武器的最大探测深度。正如预期的那样，只检测到了铁磁物品；同时包含铁磁和非铁磁成分的武器通常探测深度较浅。总体而言，磁定位器对于涉及掩埋铁磁武器的武器搜查可能是一个有用的补充。
