MacAulay Lauren E, Barr Darryl G, Strongman Doug B
Firearms Section, Royal Canadian Mounted Police Forensic Laboratory, Vancouver, British Columbia, Canada.
J Forensic Sci. 2009 Mar;54(2):448-51. doi: 10.1111/j.1556-4029.2008.00980.x. Epub 2009 Feb 9.
Information on gunshot wound characteristics has been well documented; however, there is little documented information on the effects of decomposition or environmental conditions on gunshot wound characteristics. This study was conducted in order to determine if decomposition would obscure or alter the physical surface characteristics of gunshot wounds when exposed to a low temperature environment. The study was conducted from November 2005 to January 2006 in Nova Scotia, Canada in forested and exposed environments, with air temperatures between -10 degrees C and +10 degrees C. Pigs were used as human models and were shot six times each at three different ranges (contact, 2.5 cm, and 1.5 m). Gunshot wound characteristics persisted until the wounds were covered with ice and snow, after which changes were observed. The changes were recognized as being unique to the different ranges of gunshots and it was concluded that changes due to decomposition under the conditions tested would not affect the collection and interpretation of gunshot wound evidence.
关于枪伤特征的信息已有详尽记录；然而，关于尸体腐败或环境条件对枪伤特征影响的记录信息却很少。开展本研究是为了确定在低温环境下，尸体腐败是否会掩盖或改变枪伤的体表特征。该研究于2005年11月至2006年1月在加拿大新斯科舍省的森林和开阔环境中进行，气温在-10摄氏度至+10摄氏度之间。猪被用作人体模型，在三个不同距离（接触射击、2.5厘米和1.5米）分别对每头猪射击6次。枪伤特征一直持续到伤口被冰雪覆盖，之后才观察到变化。这些变化被认为因枪击距离不同而独特，并且得出结论：在所测试的条件下，由尸体腐败导致的变化不会影响枪伤证据的收集和解读。
