Carbon dating calibration calculator
For a radiocarbon value measured in a sample S (Fs), bomb radiocarbon delivers two possible calendar dates (T1 and T2), indicated by the grey boxes (Hua, 2009).Details C concentrations are mainly due to variations in the rate of radiocarbon production in the atmosphere, caused by changes in the Earth's magnetic field and variability in solar activity, and changes in the carbon cycle. The difference of the two curves (R) is ~400 yr on average.Details An example of bomb-pulse radiocarbon dating of a terrestrial sample from Northern Hemisphere zone 1.Four zonal data sets of tropospheric bomb C ages is usually undertaken using a computer program. Examples of radiocarbon calibration for the traditional radiocarbon dating and the bomb-pulse dating are shown in Figs. Several calibration programs are available on-line.
This dating method is usually called bomb-pulse dating (for the interval from 1950 onwards) to differentiate from traditional radiocarbon dating (for the period from 1950 backwards). Additional calibration programs can be found on the Radiocarbon journal website at
View the full list Radiocarbon dating has transformed our understanding of the past 50,000 years.
Professor Willard Libby produced the first radiocarbon dates in 1949 and was later awarded the Nobel Prize for his efforts.
These variations are due to changes in ocean circulation and the carbon cycles associated with climatic change.
Temporal variations in C was artificially produced when hundreds of nuclear test weapons were detonated in the atmosphere, mostly in the Northern Hemisphere, in the late 1950s and early 1960s.