Title

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

Authors

Authors

C. A. Healy; J. J. Schultz; K. Parker;B. Lowers

Comments

Authors: contact us about adding a copy of your work at STARS@ucf.edu

Abbreviated Journal Title

J. Forensic Sci.

Keywords

forensic science; geophysical search methods; side-scan sonar; submerged; bodies; water search methods; search methods; GROUND-PENETRATING RADAR; CLANDESTINE GRAVES; FORENSIC ARCHAEOLOGY; SEARCHES; BURIALS; Medicine, Legal

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 20m 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.

Journal Title

Journal of Forensic Sciences

Volume

60

Issue/Number

3

Publication Date

1-1-2015

Document Type

Article

Language

English

First Page

743

Last Page

752

WOS Identifier

WOS:000353994200029

ISSN

0022-1198

Share

COinS