ASTRONOMICAL SOLUTIONS FOR PALEOCLIMATE STUDIES OVER THE LAST 3 MILLION YEARS
ASTRONOMICAL SOLUTIONS FOR PALEOCLIMATE STUDIES OVER THE LAST 3 MILLION YEARS
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DOI：
10.1016/0012-821x(92)90190-7
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发表时间：
1992-07-01
影响因子：
5.3
通讯作者：
LOUTRE, MF
中科院分区：
文献类型：
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作者：
BERGER, A;LOUTRE, MF
三个解决方案（数值-QTD 90，半解析-LA 90和解析-BER 90）的行星和岁差元素的地球最近成为可用。它们可以用来计算基本的天文气候参数（偏心率、气候岁差和岁差）。这些不同的解决方案之间的协议是非常好的，反映了他们的准确性，在这样一种方式，他们可以被认为是足够可靠的古气候研究超过至少3百万年。这些解决方案之间的差异偏心率是小于0.005在这个时间间隔，而在结晶度和气候岁差的差异较大，但主要是由于解决方案之间的相位滞后。在300万年BP时，BER 90在气候岁差方面分别领先LA 90 6 × 10（3）年和QTD 90 9 × 10（3）年;在气候岁差方面，BER 90领先LA 90 2 × 10（3）年和QTD 90 4 × 10（3）年。
Three solutions (numerical-QTD90, semi-analytical-LA90 and analytical-BER90) for the planetary and precessional elements of the Earth have recently become available. They allow the computation of the fundamental astroclimatic parameters (eccentricity, climatic precession and obliquity). The agreement between these different solutions is remarkably good, reflecting their accuracy, in such a way that they can be considered reliable enough for paleoclimate studies over at least 3 Myr.The difference between these solutions in eccentricity is less than 0.005 over this time interval, while the differences in obliquity and climatic precession are larger but mainly due to phase lag between the solutions. At 3 Myr BP, BER90 leads LA90 by 6 x 10(3) yrs and QTD90 by 9 x 10(3) yrs for the obliquity, and it leads LA90 by 2 x 10(3) yrs and QTD90 by 4 x 10(3) yrs for the climatic precession.