Detecting Submerged Bodies: Controlled Research Using Side-Scan Sonar To Detect Submerged Proxy Cadavers

Keywords

Forensic science; Geophysical search methods; Search methods; Side-scan sonar; Submerged bodies; Water search methods

Abstract

Forensic investigators routinely deploy side-scan sonar for submerged body searches. This study adds to the limited body of literature by undertaking a controlled project to understand how variables affect detection of submerged bodies using side-scan sonar. Research consisted of two phases using small and medium-sized pig (Sus scrofa) carcasses as proxies for human bodies to investigate the effects of terrain, body size, frequency, swath width, and state of decomposition. Results demonstrated that a clear, flat, sandy pond floor terrain was optimal for detection of the target as irregular terrain and/or vegetation are major limitations that can obscure the target. A higher frequency towfish was preferred for small bodies, and a 20 m swath width allowed greater visibility and easier maneuverability of the boat in this environment. Also, the medium-sized carcasses were discernable throughout the 81-day study period, indicating that it is possible to detect bodies undergoing decomposition with side-scan sonar.

Publication Date

5-1-2015

Publication Title

Journal of Forensic Sciences

Volume

60

Issue

3

Number of Pages

743-752

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1111/1556-4029.12671

Socpus ID

84928774425 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84928774425

This document is currently not available here.

Share

COinS