ESD Ideas: Propagation of high-frequency forcing to ice age dynamics

Palaeoclimate records display a continuous background of variability connecting centennial to 100 kyr periods. Hence, the dynamics at the centennial, millennial, and astronomical timescales should not be treated separately. Here, we show that the nonlinear character of ice sheet dynamics, which was...

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Bibliographic Details
Published in:Earth System Dynamics
Main Authors: M. Y. Verbitsky, M. Crucifix, D. M. Volobuev
Format: Article in Journal/Newspaper
Language:English
Published: Copernicus Publications 2019
Subjects:
Science
Q
Geology
QE1-996.5
Dynamic and structural geology
QE500-639.5
Ice Sheet
Online Access:https://doi.org/10.5194/esd-10-257-2019
https://doaj.org/article/4e2ffa69ad724a098f73de87ec53778c
Description
Summary:Palaeoclimate records display a continuous background of variability connecting centennial to 100 kyr periods. Hence, the dynamics at the centennial, millennial, and astronomical timescales should not be treated separately. Here, we show that the nonlinear character of ice sheet dynamics, which was derived naturally from the ice-flow conservation laws, provides the scaling constraints to explain the structure of the observed spectrum of variability.

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