J/A+A/321/L33ivo://CDS.VizieR/J/A+A/321/L33doi:10.26093/cds/vizier.33219033CDSJetsu L.1997-12-09T16:59:03Z1997-12-09T17:58:59ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frearth-planetThe most significant periodicities in the terrestrial impact crater record are due to the "human-signal": the bias of assigning integer values for the crater ages. This bias seems to have eluded the proponents and opponents of real periodicity in the occurrence of these events, as well as the theorists searching for an extraterrestrial explanation for such periodicity. The "human-signal" should be seriously considered by scientists in astronomy, geology and paleontology when searching for a connection between terrestrial major comet or asteroid impacts and mass extinctions of species.1997A&A...321L..33Jhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/321/L33CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/321/L33https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/321/L33http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/321/L33https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/321/L33https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/321/L33http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/321/L33GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/A+A/321/L33/table1Ages of the impact craterse_trms uncertainty on ageMyrstat.errordoublerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqSequential numbermeta.idintNameCrater namemeta.id;meta.maincharCountryCountrymeta.id;instr.obstychartAge of the impact craterMyrtime.agedoubleet1/et2(e_t1/e_t2) for combined eventsMyrmeta.notecharDiamDiameterkmphys.size.diameterfloatD1/D2(D1/D2) for combined eventskmstat.fit.paramcharLocLocation for combined eventsmeta.notecharC1[Y] Y: in the C1 samplemeta.notecharC2[Y] Y: in the C2 samplemeta.notecharC3[Y] Y: in the C3 samplemeta.notecharC4[Y] Y: in the C4 samplemeta.notecharC5[Y] Y: in the C5 samplemeta.notecharC6[Y] Y: in the C6 samplemeta.notechar