Relationship between Water Temperature and Floating Time of Aquatic Cadavers

doi:10.12116/j.issn.1004-5619.2021.411019

Abstract

Abstract: Objective

To study the relationship between water temperature and floating time of aquatic cadavers， providing a reference for more precise positioning and searching for floating corpses.

Methods

The floating model of guinea pig after drowning at 17-30 ℃ was established, and the floating times of carcasses were recorded. The collected data of 32 floating corpse cases in the Pearl River were sorted out and analyzed according to the floating time of corpses corresponding to each degree of water temperature. The relationship models between water temperature and the floating time of guinea pig carcass, and between that and the floating time of real cases were established.

Results

The floating time of the cadaver was negatively correlated with water temperature. The power function fitting equation of the relationship between floating time and water temperature of guinea pig carcass was y=1×10¹⁵x^-10.530（R²=0.871, P<0.01）， and the power function fitting equation of the relationship between corpse floating time and water temperature was y=3×10⁶x^-3.467（R²=0.802, P<0.01）.

Conclusion

It is found that average floating cadaver time has a power function with water temperature， which provides a reference for locating floating cadavers and establishing search models.

Key words: forensic pathology, drowning, floating corpse, water temperature, corpse floating time

CLC Number:

DF795.1

Xu LI, Ya-ping ZHOU, Shu-wen HE, Bin LIN. Relationship between Water Temperature and Floating Time of Aquatic Cadavers[J]. Journal of Forensic Medicine, 2022, 38(1): 82-85.

Figures/Tables 2

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