are ice ages related to earth's eccentricity?
152449
Subsequent research confirms that they did occur at 41,000-year intervals between one and three million years ago. But about 800,000 years ago, the cycle of Ice Ages lengthened to 100,000 years, matching Earth's eccentricity cycle.
1368121
Ice ages and warm periods have alternated fairly regularly in Earth's history: Earth's climate cools roughly every 100,000 years, with vast areas of North America, Europe and Asia being buried under thick ice sheets. Eventually, the pendulum swings back: it gets warmer and the ice masses melt.
259564
The Earth has been alternating between long ice ages and shorter interglacial periods for around 2.6 million years. For the last million years or so these have been happening roughly every 100,000 years - around 90,000 years of ice age followed by a roughly 10,000 year interglacial warm period.
455365
Wegener suggested that perhaps the rotation of the Earth caused the continents to shift towards and apart from each other. (It doesn't.) Today, we know that the continents rest on massive slabs of rock called tectonic plates. The plates are always moving and interacting in a process called plate tectonics.
1460845
Changes at the poles have both local and global implications. The retreat of glaciers and shrinking of the Greenland ice sheet in the Arctic, for example, is predicted to cause significant sea-level rise, changes in the salinity of our oceans, and altered feedback loops that will make the Arctic warm up even faster.
807570
Rapid loss already contributing to sea level rise. The polar ice sheets are indeed shrinking—and fast, according to a comprehensive new study on climate change.
31068
Currently, we are in a warm interglacial that began about 11,000 years ago. The last period of glaciation, which is often informally called the “Ice Age,” peaked about 20,000 years ago.
827538
During a grand minimum, solar magnetism diminishes, sunspots appear infrequently and less ultraviolet radiation reaches Earth. ... These studies have suggested that while a grand minimum might cool the planet as much as 0.3 degrees C, this would, at best, slow down (but not reverse) human-caused global warming.
456730
By dating the rocks in Earth's ever-changing crust, as well as the rocks in Earth's neighbors, such as the moon and visiting meteorites, scientists have calculated that Earth is 4.54 billion years old, with an error range of 50 million years.
869415
Currently, we are in a warm interglacial that began about 11,000 years ago. The last period of glaciation, which is often informally called the “Ice Age,” peaked about 20,000 years ago. At that time, the world was on average probably about 10°F (5°C) colder than today, and locally as much as 40°F (22°C) colder.
919044
If you're talking about majestic ice rings, like we see around Saturn, Uranus or Jupiter, then no, Earth doesn't have rings, and probably never did. ... In the case of Earth, it might have held onto a few ice particles that would have then orbited the planet, and eventually crashed through our atmosphere and burned up.
104594
Australia Was Part of North America Supercontinent Over 1 Billion Years Ago, New Study Shows. It's easy to forget that the world's continents have been sliding around Earth's surface, colliding and ripping apart, for the last few million years.
148163
Mineralogical evidence from zircons has shown that liquid water and an atmosphere must have existed 4.404 ± 0.008 billion years ago, very soon after the formation of Earth.
431453
The Pleistocene Epoch is typically defined as the time period that began about 2.6 million years ago and lasted until about 11,700 years ago. The most recent Ice Age occurred then, as glaciers covered huge parts of the planet Earth.
406937
Today, the Earth's axis is tilted 23.5 degrees from the plane of its orbit around the sun. But this tilt changes. During a cycle that averages about 40,000 years, the tilt of the axis varies between 22.1 and 24.5 degrees. Because this tilt changes, the seasons as we know them can become exaggerated.
1313404
So yes, there is scientific consensus that, with the Earth's continents constantly in motion across the globe, that some 335 million years ago the continental plates "collided" to form a super-continent we call Pangaea ("all lands"). ... The continents are loose on the oceans, now, and are drifting even as you read this.
1035186
It shows that as the moon slowly spirals away from Earth and our planet's rotation slows, days are growing longer. Only they're not growing longer very fast. In fact, days are lengthening by only 1.8 milliseconds a century, said Stephen Meyers, a geoscientist at the University of Wisconsin and a co-author of the study.