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Luminescence age calculation through Bayesian convolution of equivalent dose and dose-rate distributions: the De_Dr model

hal.structure.identifierArchéosciences Bordeaux
dc.contributor.authorMERCIER, Norbert
hal.structure.identifierLaboratoire de Mathématiques Jean Leray [LMJL]
dc.contributor.authorGALHARRET, Jean-Michel
hal.structure.identifierArchéosciences Bordeaux
dc.contributor.authorTRIBOLO, Chantal
hal.structure.identifierGeography & Earth Sciences, Aberystwyth University, United Kingdom
hal.structure.identifierArchéosciences Bordeaux
dc.contributor.authorKREUTZER, Sebastian
hal.structure.identifierLaboratoire de Mathématiques Jean Leray [LMJL]
dc.contributor.authorPHILIPPE, Anne
dc.date.issued2022-05-19
dc.description.abstractEnIn nature, each mineral grain (quartz or feldspar) receives a dose rate (Dr) specific to its environment. The dose-rate distribution, therefore, reflects the micro-dosimetric context of grains of similar size. If all the grains were well bleached at deposition, this distribution is assumed to correspond, within uncertainties, with the distribution of equivalent doses (De). The combination of the De and Dr distributions in the De_Dr model proposed here would then al- low calculation of the true depositional age. If grains whose De values are not representative of this age (hereafter called “outliers”) are present in the De distribution, this model al- lows them to be identified before the age is calculated, en- abling their exclusion. As the De_Dr approach relies only on the Dr distribution to describe the De distribution, the model avoids any assumption about the shape of the De distribu- tion, which can be difficult to justify. Herein, we outline the mathematical concepts of the De_Dr approach (more details are given in Galharret et al., 2021) and the exploitation of this Bayesian modelling based on an R code available in the R package “Luminescence”. We also present a series of tests using simulated Dr and De distributions with and without outliers and show that the De_Dr approach can be an alter- native to available models for interpreting De distributions.
dc.description.sponsorshipUsing the world in ancient societies : processes and forms of appropriation of space in Long Time - ANR-10-LABX-0052
dc.description.sponsorshipCentre de Mathématiques Henri Lebesgue : fondements, interactions, applications et Formation - ANR-11-LABX-0020
dc.language.isoen
dc.publisherCopernicus Publications
dc.rights.urihttp://creativecommons.org/licenses/by/
dc.subject.enLuminescence dating
dc.subject.enGeochronology
dc.subject.enBayesian approaches
dc.subject.enEquivalent dose
dc.title.enLuminescence age calculation through Bayesian convolution of equivalent dose and dose-rate distributions: the De_Dr model
dc.typeArticle de revue
dc.identifier.doi10.5194/gchron-4-297-2022
dc.subject.halPlanète et Univers [physics]/Sciences de la Terre
dc.subject.halStatistiques [stat]
dc.description.sponsorshipEuropeCREDit - Chronological REference Datasets and Sites (CREDit) towards improved accuracy and precision in luminescence-based chronologies
bordeaux.journalGeochronology
bordeaux.page297-310
bordeaux.volume4
bordeaux.peerReviewedoui
hal.identifierhal-03672608
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-03672608v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Geochronology&rft.date=2022-05-19&rft.volume=4&rft.spage=297-310&rft.epage=297-310&rft.au=MERCIER,%20Norbert&GALHARRET,%20Jean-Michel&TRIBOLO,%20Chantal&KREUTZER,%20Sebastian&PHILIPPE,%20Anne&rft.genre=article


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