By Andy May
P. C. Tzedakis and co-authors have just published a new paper in the February 23, 2017 issue of Nature entitled “A simple rule to determine which insolation cycles lead to interglacials.” The paper introduces new rules for defining interglacial periods in the geological record. They come up with the same interglacial periods that Javier identified in his post Nature Unbound I: The Glacial Cycle.
The Earth has been in an ice age for the last 2.6 million years, Javier defined an ice age as:
“… any period when there are extensive ice sheets over vast land regions, as we see now.”
Tzedakis, et al. note that
“The fundamental property that underlies the concept of an interglacial is high sea-level.”
The higher sea-level is a result of melting a significant amount of land-ice during the interglacial. We are currently in the “
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