Vanishing Ice by Vivien Gornitz

Author:Vivien Gornitz
Language: eng
Format: epub
Tags: SCI092000, Science/Global Warming & Climate Change, SCI042000, Science/Earth Sciences/Meteorology & Climatology
Publisher: Columbia University Press
Published: 2019-06-10T16:00:00+00:00

Further Cooling

During the Pliocene Epoch, 5.3 to 3 million years ago, the WAIS expanded and contracted repeatedly.9 These climate cycles, lasting roughly 40,000 years, marched in step with the changing tilt of the Earth’s rotation axis—the obliquity cycle (see box 7.1). Sediments were deposited in the Ross Sea of Antarctica during warmer periods of open water with little or no sea ice. Some accumulated later beneath an ice shelf, as happens today. Sediments were absent when an advancing ice sheet rested directly on the seafloor. However, the region enjoyed a prolonged period of benign climate and ice-free open water between 3.6 and 3.4 million years ago, when the WAIS probably deglaciated completely.

Download

Copyright Disclaimer:
This site does not store any files on its server. We only index and link to content provided by other sites. Please contact the content providers to delete copyright contents if any and email us, we'll remove relevant links or contents immediately.