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An automatic orbital tuning method for paleoclimate records
Author(s) -
Yu Z. W.,
Ding Z. L.
Publication year - 1998
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/1998gl900197
Subject(s) - orbital elements , computer science , paleoclimatology , series (stratigraphy) , loess , orbital forcing , climatology , geology , climate change , paleontology , insolation , physics , oceanography , astrophysics
The recognized linkage of climatic events to the Earth's orbital variations has provided the basis for establishing time scales of Pleistocene climatic records. Most of the classic orbital tuning methods developed so far, however, need visual judgements to add new time control points into the climatic records, thus being time‐consuming and hindering the construction of high resolution climatic time series. In this study, we propose to use the Dynamic Optimization method to overcome the shortcomings. With this technique, the additional time control points can be automatically added into the climatic records, and a “best” age for each of the climatic data can be calculated. Results of a case study conducted on the Baoji loess section show that the automatic orbital tuning method can lead to a much better agreement of climatic time series with theoretical changes in the orbital elements relative to the classic ones.