Sentences with phrase «quaternary glacial periods»

Arctic climatic extremes include 25 °C hyperthermal periods during the Paleocene - Eocene (56 — 46 million years ago, Ma), Quaternary glacial periods when thick ice shelves and sea ice cover rendered the Arctic Ocean nearly uninhabitable, seasonally sea - ice - free interglacials and abrupt climate reversals.

Although the southern islands (San Clemente, San Nicolas, Santa Barbara, and Santa Catalina) increased in size during Quaternary glacial periods.

Not exact matches

Researchers at the Laboratoire Ecologie des Systèmes Marins Côtiers (CNRS / IRD / Universités Montpellier 1 and 2 / IFREMER) and the Laboratoire CoRéUs 2 (IRD) have shown that the current distribution of tropical marine biodiversity is mainly due to the persistence of such refugia during glacial periods in the Quaternary.

In the case of glacials (note — not ice ages to distinguish the quaternary cycles from other periods) signals perhaps from orbital eccentricities triggering runaway snow and ice feedbacks.