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Hay, Carling C. & Mitrovica, Jerry X. & Morrow, Eric & Kopp, Robert E. & Huybers, Peter & Alley, Richard B. (2016). Earth Rotation Changes Since -500 CE Driven by Ice Mass Variations. Earth and Planetary Science Letters, 448, 115-121. Retrieved from https://doi.org/doi:10.7282/T3Z321RV

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Earth Rotation Changes Since -500 CE Driven by Ice Mass Variations (2016)
Carling C. Hay, Jerry X. Mitrovica, Eric Morrow, Robert E. Kopp, Peter Huybers, Richard B. Alley
Earth and Planetary Science Letters 448: 115-121.
Link to published version
VersionAccepted Manuscript (AM)
AbstractWe predict the perturbation to the Earth’s length-of-day (LOD) over the Common Era using a recently derived estimate of global sea-level change for this time period. We use this estimate to derive a time series of “clock error”, defined as the difference in timing of two clocks, one based on a theoretically invariant time scale (terrestrial time) and one fixed to Earth rotation (universal time), and compare this time series to millennial scale variability in clock error inferred from ancient eclipse records. Under the assumption that global sea-level change over the Common Era is driven by ice mass flux alone, we find that this flux can reconcile a significant fraction of the discrepancies between clock error computed assuming constant slowing of Earth's rotation and that inferred from eclipse records since 700 CE. In contrast, ice mass flux cannot reconcile the temporal variability prior to 700 CE.
Persistent URLhttps://doi.org/doi:10.7282/T3Z321RV
SubjectsSea level, Eclipses, Common Era ice mass flux, Earth (Planet)--Rotation, Clock error
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