Morphological characteristics analysis for deposition sequencing of overlapping bloodstain patterns
10.13618/j.issn.1001-5728.2024.03.010
- VernacularTitle:重叠血迹沉积顺序的形态特征分析
- Author:
Zunlei QIAN
1
,
2
;
Lindi ZHANG
;
Mengqi WU
;
Haoyu WANG
;
Zhao LIU
;
Zhenjun JIA
Author Information
1. 中国人民公安大学侦查学院,北京 100038
2. 刑事科学技术北京市重点实验室,北京 100038
- Keywords:
Forensic biological evidence;
Overlapping bloodstain;
Morphological characteristic;
Deposition sequence
- From:
Chinese Journal of Forensic Medicine
2024;39(3):299-303
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the morphological characteristics of overlapping bloodstains and judge the deposition sequence of bloodstain patterns.Methods The overlapping bloodstains formed by drip stains and bloody shoe prints were simulated on ceramic tiles,and the morphological characteristic differences of 6 group overlapping bloodstain patterns were analyzed to screen effective indicative characteristics.A survey was held to measure the accuracy of the participants in judging the blood deposition sequence without and with information about the morphological characteristic guidance.Results After participants mastered morphological characteristics,the accuracy of judging deposition sequence increased from 59.5%to 89.0%,and the accuracy of judging dry and wet conditions of the primary bloodstains increased from 45.6%to 65.3%.Conclusion According to the morphological characteristics of bloodstains,not only the deposition sequence of bloodstains can be effectively judged,but also the dry and wet conditions of bloodstains can be judged,so as to infer the time interval of bloodstains deposition,which can provide technical support for the analysis and reconstruction of crime scene.
