A computer program for the estimation of time of death

N Lynnerup

A computer program for the estimation of time of death

Unit of Forensic Anthropology

8 Citations (Scopus)

Abstract

In the 1960s Marshall and Hoare presented a "Standard Cooling Curve" based on their mathematical analyses on the postmortem cooling of bodies. Although fairly accurate under standard conditions, the "curve" or formula is based on the assumption that the ambience temperature is constant and that the temperature at death is known. Also, Marshall and Hoare's formula expresses the temperature as a function of time, and not vice versa, the latter being the problem most often encountered by forensic scientists. A simple BASIC program that enables solving of Marshall and Hoare's equation for the postmortem cooling of bodies is presented. It is proposed that by having a computer program that solves the equation, giving the length of the cooling period in response to a certain rectal temperature, and which allows easy comparison of multiple solutions, the uncertainties related to ambience temperature and temperature at death can be quantified, substantiating estimations of time of death.

Original language	English
Journal	J Forensic Sciences
Volume	38
Issue number	4
Pages (from-to)	816-820
Number of pages	5
Publication status	Published - 1993

Cite this

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title = "A computer program for the estimation of time of death",

abstract = "In the 1960s Marshall and Hoare presented a {"}Standard Cooling Curve{"} based on their mathematical analyses on the postmortem cooling of bodies. Although fairly accurate under standard conditions, the {"}curve{"} or formula is based on the assumption that the ambience temperature is constant and that the temperature at death is known. Also, Marshall and Hoare's formula expresses the temperature as a function of time, and not vice versa, the latter being the problem most often encountered by forensic scientists. A simple BASIC program that enables solving of Marshall and Hoare's equation for the postmortem cooling of bodies is presented. It is proposed that by having a computer program that solves the equation, giving the length of the cooling period in response to a certain rectal temperature, and which allows easy comparison of multiple solutions, the uncertainties related to ambience temperature and temperature at death can be quantified, substantiating estimations of time of death.",

author = "N Lynnerup",

note = "Keywords: Body Temperature; Death; Humans; Mathematical Computing; Software; Temperature; Time Factors",

year = "1993",

language = "English",

volume = "38",

pages = "816--820",

journal = "Journal of Forensic Sciences",

issn = "0022-1198",

publisher = "Wiley-Blackwell",

number = "4",

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TY - JOUR

T1 - A computer program for the estimation of time of death

AU - Lynnerup, N

N1 - Keywords: Body Temperature; Death; Humans; Mathematical Computing; Software; Temperature; Time Factors

PY - 1993

Y1 - 1993

N2 - In the 1960s Marshall and Hoare presented a "Standard Cooling Curve" based on their mathematical analyses on the postmortem cooling of bodies. Although fairly accurate under standard conditions, the "curve" or formula is based on the assumption that the ambience temperature is constant and that the temperature at death is known. Also, Marshall and Hoare's formula expresses the temperature as a function of time, and not vice versa, the latter being the problem most often encountered by forensic scientists. A simple BASIC program that enables solving of Marshall and Hoare's equation for the postmortem cooling of bodies is presented. It is proposed that by having a computer program that solves the equation, giving the length of the cooling period in response to a certain rectal temperature, and which allows easy comparison of multiple solutions, the uncertainties related to ambience temperature and temperature at death can be quantified, substantiating estimations of time of death.

AB - In the 1960s Marshall and Hoare presented a "Standard Cooling Curve" based on their mathematical analyses on the postmortem cooling of bodies. Although fairly accurate under standard conditions, the "curve" or formula is based on the assumption that the ambience temperature is constant and that the temperature at death is known. Also, Marshall and Hoare's formula expresses the temperature as a function of time, and not vice versa, the latter being the problem most often encountered by forensic scientists. A simple BASIC program that enables solving of Marshall and Hoare's equation for the postmortem cooling of bodies is presented. It is proposed that by having a computer program that solves the equation, giving the length of the cooling period in response to a certain rectal temperature, and which allows easy comparison of multiple solutions, the uncertainties related to ambience temperature and temperature at death can be quantified, substantiating estimations of time of death.

M3 - Journal article

C2 - 8355002

SN - 0022-1198

VL - 38

SP - 816

EP - 820

JO - Journal of Forensic Sciences

JF - Journal of Forensic Sciences

IS - 4

ER -

A computer program for the estimation of time of death

Abstract

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