Hostname: page-component-cd9895bd7-8ctnn Total loading time: 0 Render date: 2024-12-26T08:19:51.405Z Has data issue: false hasContentIssue false
  • English
  • Français

Least-Squares Fitting Smooth Curves to Decadal Radiocarbon Calibration Data from AD 1145 to AD 1945

Published online by Cambridge University Press:  18 July 2016

F B Knox  and
B G McFadgen
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Smoothed curves are least-squares fitted to three sets of decadal radiocarbon calibration data from New Zealand and British Isles (AD 1725–1935) and western North America (AD 1145–1945). The curves are compared with each other and with a curve previously calculated from New Zealand data (AD 1335–1745). The smoothing procedure results in reduced standard deviations of the curves, but at the expense of time resolution. The comparison shows a variable 14C offset between the northern and southern hemispheres of 0–70 years (Southern Hemisphere older), and a Northern Hemisphere longitudinal variation of −20 to +60 years (British Isles generally older than western North America).

Type
Articles
Information
Radiocarbon , Volume 43 , Issue 1 , 2001 , pp. 87 - 118
Copyright
Copyright © The Arizona Board of Regents on behalf of the University of Arizona 

References

Carter, L, Garlick, RD, Sutton, P, Chiswell, S, Oien, NA, Stanton, BR. 1998. Ocean Circulation New Zealand. NIWA Miscellaneous Chart Series No. 76.Google Scholar
Knox, FB, McFadgen, BG. 1997. Least-squares fitting a smooth curve to radiocarbon calibration data. Radiocarbon 39(2):193–204.Google Scholar
McCormac, FG, Hogg, AG, Higham, TFG, Lynch-Stieglitz, J, Broecker, WS, Baillie, MGL, Palmer, J, Pilcher, JR, Brown, D, Hope, ST. 1998. Temporal variation in the interhemispheric 14C offset. Geophysical Research Letters 25(9):1321–4.CrossRefGoogle Scholar
McFadgen, BG, Knox, FB, Cole, TRL. 1994. Radiocarbon calibration curve variations and their implications for the interpretation of New Zealand prehistory. Radiocarbon 36(2):221–36.Google Scholar
Press, WH, Teukolsky, SA, Vetterling, WT, Flannery, B P. 1994. Numerical Recipes in FORTRAN. 2nd ed. corr. Cambridge: Cambridge Univ. Press. 963 p.Google Scholar
Snedecor, G.W., Cochran, WG. 1967. Statistical Methods. 6th ed. Iowa State University Press. 593 p.Google Scholar
Sparks, RJ, Melhuish, WH, McKee, JWA, Ogden, J, Palmer, JG, Molloy, BPJ. 1995. 14C calibration in the Southern Hemisphere and the date of the last Taupo eruption: Evidence from tree-ring sequences. Radiocarbon 37(2):155–63.CrossRefGoogle Scholar
Stuiver, M, Becker, B. 1986. High-precision decadal calibration of the radiocarbon time scale, AD 1950–BC 2500. Radiocarbon 28(2B):863–910.Google Scholar
Stuiver, M, Braziunas, TF. 1998. Anthropogenic and solar components of hemispheric 14C. Geophysical Research Letters 25:329–32.Google Scholar
Stuiver, M, Reimer, PJ, Braziunas, TF. 1998. High-precision radiocarbon age calibration for terrestrial and marine samples. Radiocarbon 40(3):1127–51.Google Scholar