Identification of some factors influencing soil transfer on shoes

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Serval ID
serval:BIB_3464F29A8B5F
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Identification of some factors influencing soil transfer on shoes
Journal
Science & Justice
Author(s)
Werner Denis, Burnier Céline, Yu Yingchao, Marolf André R., Wang Yuanfeng, Massonnet Geneviève
ISSN
1355-0306
ISSN-L
1355-0306
Publication state
Published
Issued date
17/07/2019
Peer-reviewed
Oui
Volume
59
Number
6
Pages
643-653
Language
english
Abstract
In criminal activities, soil can be transferred from a crime scene to items linked with a perpetrator; for example, shoes, cars or tools. Several parameters will influence the quantity of soil transferred in a given scenario. The knowledge of the most influential factors can help the expert to assess the evidence using a logical approach at the activity level or to predict the amount of soil that can be expected in a given scenario. The influence of five chosen parameters, namely the shoe profile, shoe size, walker’s weight, soil type and soil humidity were assessed using Design of Experiment (DOE) in order to understand their influence on soil quantity transferred on shoes.
The Faced Central Composite Design (FCCD) using a quadratic model was found to be highly significant, thus they could be adequately used to model and to interpret the amount of soil recovered from one shoe.
These designs demonstrate that the characteristics of the donor (soil type and soil humidity), as well as a combination of these two factors have a very significant impact on the soil transfer. The characteristics of the receptor (shoe profile, shoe size and walker’s weight) also have an impact on the transfer but to a lesser extent.
Globally, this research provides valuable information for the forensic scientist both in investigative mode: evaluation of the soil quantity possibly transferred on shoes, and in the evaluative steps: is the quantity of soil found on the suspect shoes in accordance to the proposition/scenario given by the prosecution and the defence?
Keywords
Forensic geology, Soil forensic, Experimental design
Pubmed
Web of science
Create date
19/08/2019 13:36
Last modification date
24/03/2020 6:20
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