When was the Ice Age?
When was Ice Age released?
Release date
March 15, 2002
"Ice Age" is a 2002 movie A fully digital animated film produced by Blue Sky Animation Studio in 2016 and distributed by 20th Century Fox Film Company. It is the first in the "Ice Age" series and is co-directed by Chris Wedge and Carlos Saldanha [
When was the first ice age in history?
In the long geological history, the earth has experienced three periods of continuous decline in temperature. Geologists call this "ice age" "The ice ages of the Precambrian and Paleozoic lasted for tens of millions of years, and the ice ages of the Cenozoic lasted for two million years. There is still no definite conclusion on the cause of the ice age. Some scholars believe that it may be related to the periodic tilt angle of the earth's axis that changes during the rotation of the earth, resulting in a reduction in sunlight exposure. The occurrence of ice ages is still a mystery of natural science. Although scientists are quite sure that changes in the earth's orbit around the sun and its rotation axis are closely related to the occurrence of ice ages, these changes do not change the incident energy of the sun. They only change the distribution of incident sunlight, but they can cause changes in the earth's The dramatic changes in climate have baffled scientists.
About two million years ago when humans first appeared on the Earth stage, the third ice age in geological history, the "Quaternary Ice Age," kicked off at the same time. Temperatures began to drop around the world, and temperatures in the mid-latitudes of the Northern Hemisphere Regions such as Europe, North America and Greenland are all covered by large ice sheets extending all the way from the Arctic. During this period, five glaciations occurred in Europe, and four glaciations occurred in North America and mainland China. As for Taiwan, it is currently only confirmed that glaciations occurred in the Snow Mountain area during the last glacial period, which was the late Pleistocene epoch 70,000 to 10,000 years ago. Scholars call it the "Snow Mountain Ice Age."
The temperature rise at the North and South Poles will cause the polar ice caps to melt. You must know that the melting of ice absorbs heat, so the temperature rise at the poles will correspondingly cause a global temperature imbalance, which means that the temperature will drop. .
The last ice age was more than 50,000 years ago. Because the earth's climate was very hot at that time, land animals adapted to the year-round high temperature of more than 40 degrees. Finally, the temperature imbalance between the two poles caused the global temperature to drop, but The degree of decrease is not obvious, but for many warm-blooded animals, even if the temperature of their living environment drops by 10 degrees, it will be fatal.
By the way, human ancestors already knew how to use the most effective methods 50,000 years ago. Basic measures to keep warm allowed us to get through that period.
The four major ice ages in the world (Ice age)
The name of the foreign ice age, the name of the Chinese ice age, the age since the occurrence (10,000 years) Geological Time
Guniz Glaciation, Poyang Glaciation 137-150, Late Jurassic
Mindel Glaciation, Dagu Glaciation 105-120, Cretaceous
< p> Riss Glaciation, Lushan Glaciation 10-32 Tertiary OligoceneWurm Glaciation, Dali Glaciation 1-11 Quaternary Update
Cretaceous, Who came before and after the Ice Age and the Triassic Age?
Ice Age:
About 2.4 billion to 2.1 billion years ago - the Huron Ice Age
About 850 million to 635 million years ago - the Ice Age< /p>
About 450 million to 420 million years ago - Ordovician
About 360 million to 260 million years ago - Carboniferous
About 2.58 million years ago ——The Quaternary Ice Age
The Cretaceous Period: began 145.5 million years ago, ended 65.5 million years ago, and lasted 80 million years.
Triassic: Starting time: 250 million years ago Duration: about 50 million years
Arrangement order: Ice Age - Triassic - Cretaceous.
When will the Earth’s Ice Age come?
A new round of Earth’s ice age is coming
2009-01-15 07:24 Sina Technology
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Sina Technology News Beijing According to foreign media reports on January 15, the latest research by Russian scientists shows that the global climate will show a gradual cooling trend in the next few years, and the final development result is likely to be the arrival of a new round of glaciation.
Russian scientists said that various evidences such as ice cores, ocean sediment cores, geological records, and research data on paleontological populations all show that the earth has a regular glacial cycle pattern, that is, each glacial period lasts approximately 100,000 years ago, the two glacial periods were separated by an interglacial period lasting approximately 12,000 years. Long-term climate data also show that there is a close connection between the earth's climate and three astronomical cycles, which are collectively called the "Milankovitch cycle." The Milankovitch cycle includes three cycles: changes in the Earth's tilt, changes in the shape of the Earth's orbit, and changes in the Earth's wobble. According to the Milankovitch theory, these three astronomical cycles respectively affected the degree of radiation from the sun to the earth, which in turn led to the formation of the earth's glacial periods and interglacial periods.
The ice core data curve chart of the Vostok Station in Antarctica shows that glacial periods and interglacial periods do occur at intervals in a cyclical pattern. According to the Dongfang Station data curve, it can also be seen that changes in the amount of carbon dioxide on the earth lag behind changes in the earth's temperature by about 800 years. Therefore, this shows that the change in the earth's temperature precedes the change in the amount of carbon dioxide, or that the former causes the change in the latter amount, rather than the opposite effect, which is completely different from the greenhouse effect theory. In other words, the increase in carbon dioxide in the atmosphere does not cause global warming. On the contrary, the natural cycle of global temperatures causes the increase in carbon dioxide. The amount of carbon dioxide rises and falls with changes in Earth's temperature, mainly because cold water can hold more carbon dioxide than warm water. The Earth is now heating up due to natural cycles of ice ages. As ocean water temperatures rise, it releases more carbon dioxide into the atmosphere.
Because the release of carbon dioxide from rising seawater lags behind changes in Earth's temperature, the amount of carbon dioxide on Earth will continue to increase for 800 years after the end of the current interglacial period. It will be 800 years after the earth enters the next ice age that the amount of carbon dioxide will begin to decrease as ocean temperatures drop. The Dongfang Station ice core data curve chart shows that over the past 420,000 years, the global amount of carbon dioxide has been rising and falling following the glacial cycle. In this natural cycle, the earth's temperature reaches a peak every approximately 110,000 years. About 325,000 years ago, Earth's temperature and carbon dioxide levels peaked. Now, the earth's temperature has reached its peak again, and the interglacial period is coming to an end, so the earth is about to enter the next ice age. If we're lucky, humanity still has years to prepare.
What is the Ice Age?
The Ice Age, also known as the Ice Age, refers to the period when the earth's land and oceans were covered by ice. These ice-covered areas were much wider than the areas covered by ice now. During the Ice Age, ice covered large areas of the world, and the climate in these areas was very cold; there were a lot of ice in the oceans, and thick ice condensed on the ground. At the same time, because more water is stored in the ice, sea levels are lower everywhere.
Ice ages may have occurred several times during two geological periods called the end of the Precambrian (600 million years ago) and the Ordovician (about 450 million years ago). We can still see remnants of the Ordovician Ice Age in today's Sahara Desert - there are scratch marks on the stones in large areas, which were left by the passage of ice. Scientists believe that there have been 8 ice ages and 8 warm periods in the history of the earth.
During the Ice Age, many places in Europe, northern Asia, and North America were covered with large amounts of ice and snow, and the current ice caps and ice layers are what is left of that time. The movement of the ice changes the landmass. The ice scrapes away large areas of rock, and the scraped stone debris accumulates on the edge of the ice, called moraine. When the weather is warmer, the ice and snow melt and the ice layer shrinks, leaving the moraine on the ground, and the water flowing down from the melting ice layer is carried to other places. Many new lakes and rivers have formed in mountains and basins that were once covered by ice.
In addition, some scientists predict that the next ice age of the earth will occur as early as 15,000 years ago, provided that human activities do not have a serious impact on the earth during this period.
The Ice Age refers to a period when a large area of land on the earth's surface was covered by glaciers. In the past history of life on earth, ice ages have occurred repeatedly; at least 800,000 years ago, the earth has experienced more than 30 ice ages.
How cold was the Earth’s Ice Age?
Actually it sounds a bit surprising. During the Ice Age, the temperature may only have dropped by 4 or 5 degrees Celsius within 100,000 years. But please note that this is just a global "average" number. During the Ice Age, the polar ice caps expand, and the distribution of subtropical regions moves toward the equator. In some areas, such as coastal areas, due to the regulation of the ocean, or equatorial areas with strong sunshine all year round, the temperature changes may be smaller; but in some areas, such as inland, desert areas or areas with other special terrain and environments, the temperature changes may be smaller. The decline is very obvious.
Can living things survive?
The drop in temperature has changed the vegetation on the surface, and has also indirectly or directly changed the living environment of animals, causing many animals to face extinction or be forced to migrate. Of course, species that can adapt to the changed environment will survive.
When was the last time?
When the Ice Age came, the temperature dropped slowly and gradually. The last ice age occurred about 18,000 years ago. According to scientists' research, the climate at that time was cold, and about one-third of the world's land was covered under a 240-meter-thick ice layer.
The earth has ice ages, is there a "hot period"?
The period between the ice age and the next ice age is the "interglacial period"; the climate during the interglacial period is warm, and the earth is currently in an interglacial period. Apart from glacial ages and interglacial periods, there is no third hot period with particularly high temperatures.
In the Ice Age, the ice did not freeze directly in the ocean. Instead, the glaciers on land expanded. A large amount of ice stayed on the land and was not easy to return to the sea. The ocean water volume decreased, and the sea level dropped.
The four major ice ages in the world (Ice age)
Foreign ice age names Chinese ice age names Age of occurrence (ten thousand years) Geological time
Gusa (Guniz) Ice Age Poyang Ice Age 137-150 End of the Jurassic
Mindel Ice Age Dagu Ice Age 105-120 Cretaceous Age
Riss Ice Age Lushan Ice Age 10-32 Tertiary Period Pleistocene
Wurm Glaciation Dali Glaciation 1-11 Quaternary Pleistocene
It is estimated that there is a 400,000-year cycle of change, but it has never been observed. Therefore, geophysicists and meteorologists believe that although the cosmic ray theory of Kirkby and others is controversial, it is not too crazy and deserves careful study.
The ice age (ice ages) is due to Is it caused by changes in the total amount of cosmic rays (cosmic rays) hitting the earth? According to research, the influence of cosmic rays acts on clouds, which then leads to huge changes in the earth's climate. Study the changes in beryllium-10 content in deep sea sediments, and beryllium-10 is...
When will the next ice age come
You can rest assured, It's still early for the Ice Age to arrive. The Ice Age is also known as the Great Ice Age. There have been three known ice ages in the history of the earth. They are the Sinian Ice Age, the Carboniferous-Permian Ice Age, and the Quaternary Ice Age. The intervals between them are All three hundred million years. According to this period, the next ice age will not come until 300 million years later, because the last Quaternary Ice Age ended less than 20,000 years ago. Even if it comes now, humans will not become extinct, because the ancestors of humans were born before the end of the Quaternary Ice Age. The ancient humans at that time could survive, and I believe humans will not become extinct now. Of course, billions of people are certain to die.
When will the next Ice Age be?
Russian scientists say that a new round of Earth’s ice age is coming.
According to foreign media reports, the latest research by Russian scientists shows that the global climate will show a gradual cooling trend in the next few years, and the final development result is likely to be the arrival of a new round of glaciation.
Russian scientists said that various evidences such as ice cores, ocean sediment cores, geological records, and research data on paleontological populations all show that the earth has a regular glacial cycle pattern, that is, each glacial period lasts approximately 100,000 years ago, the two glacial periods were separated by an interglacial period lasting approximately 12,000 years. Long-term climate data also show that there is a close connection between the earth's climate and three astronomical cycles, which are collectively called the "Milankovitch cycle." The Milankovitch cycle includes three cycles: changes in the Earth's tilt, changes in the shape of the Earth's orbit, and changes in the Earth's wobble. According to the Milankovitch theory, these three astronomical cycles respectively affected the degree of radiation from the sun to the earth, which in turn led to the formation of the earth's glacial periods and interglacial periods.
The ice core data curve chart of the Vostok Station in Antarctica shows that glacial periods and interglacial periods do occur at intervals in a cyclical pattern. According to the Dongfang Station data curve, it can also be seen that changes in the amount of carbon dioxide on the earth lag behind changes in the earth's temperature by about 800 years. Therefore, this shows that the change in the earth's temperature precedes the change in the amount of carbon dioxide, or that the former causes the change in the latter amount, rather than the opposite effect, which is completely different from the greenhouse effect theory. In other words, the increase in carbon dioxide in the atmosphere does not cause global warming. Instead, the natural cycle of global temperatures causes the increase in carbon dioxide. The amount of carbon dioxide rises and falls with changes in Earth's temperature, mainly because cold water can hold more carbon dioxide than warm water. The Earth is now heating up due to natural cycles of ice ages. As ocean water temperatures rise, it releases more carbon dioxide into the atmosphere.
Because the release of carbon dioxide from rising seawater lags behind changes in Earth's temperature, the amount of carbon dioxide on Earth will continue to increase for 800 years after the end of the current interglacial period. It will be 800 years after the earth enters the next ice age that the amount of carbon dioxide will begin to decrease as ocean temperatures drop. The Dongfang Station ice core data curve chart shows that over the past 420,000 years, the global amount of carbon dioxide has been rising and falling following the glacial cycle. In this natural cycle, the earth's temperature reaches a peak every approximately 110,000 years. About 325,000 years ago, Earth's temperature and carbon dioxide levels peaked. Now, the earth's temperature has reached its peak again, and the interglacial period is coming to an end, so the earth is about to enter the next ice age. If we're lucky, humanity still has years to prepare.
Habiblo Abdusamatov of the Pulkovo Main Observatory of the Russian Academy of Sciences said that according to the current changes in solar radiation, global temperatures will inevitably rise between 2012 and 2015. decline, but this process will be slower.
In addition, between 2055 and 2060, there will be a significant global cooling, a process that will last about 60 years. Abdusamatov also revealed that Russia will build a new space observation device starting next year to conduct comprehensive monitoring of earth climate changes from space. It is reported that the device may be deployed to the International Space Station in 2008. He said, "There is no similar high-precision observation instrument in the world now. We hope that this device can be deployed on the International Space Station by the end of 2008. From 2009, we will use it to carry out systematic observation activities." ”
In the long geological history, the earth has experienced three periods of continuous decline in temperature, which geologists call “ice ages”. The ice ages of the Precambrian and Paleozoic lasted for thousands of years. million years, and the Cenozoic Ice Age lasted two million years. There is still no definite conclusion on the cause of the ice age. Some scholars believe that it may be related to the periodic tilt angle of the earth's axis that changes during the rotation of the earth, resulting in a reduction in sunlight exposure. The occurrence of ice ages is still a mystery of natural science. Although scientists are quite sure that changes in the earth's orbit around the sun and its rotation axis are closely related to the occurrence of ice ages, these changes do not change the incident energy of the sun. They only change the distribution of incident sunlight, but they can cause changes in the earth's The dramatic changes in climate have baffled scientists. About two million years ago when humans first appeared on the earth's stage, geology...
When was the Ice Age?
This refers to the extremely cold climate of the earth, the high A period in which a vast area of latitude was covered by continental glaciers. The most recent glacial period was in the Pleistocene. According to research results in Europe and North America, it is believed that there were six glacial periods and five interglacial periods. In Japan, two glacial periods were found based on analysis of the cirque topography (kar) topography. The most significant glacial period was during the Carboniferous-Permian period, and the remains of glaciers remain in Gondwana. In addition to the two major glacial periods mentioned above, glacial remains from the Precambrian, Mesozoic and Tertiary periods have also been found in Europe and America, but they are not very significant.
Ice Age
In geological history, glaciers have slid across the earth's surface many times, carving the land and forming many lakes and swamps. The most recent ice age occurred about 2 billion years ago. In southern Canada, stretching for 1,000 miles from east to west, lie the deposits of a series of primitive glaciers. This earliest Canadian ice sheet must have been at least 1,000 miles long, 1,000 miles wide, and thousands of feet thick. The latest evidence suggests that ice traveled into the northern United States, at least into the Michigan area.
Scientists believe that glacial deposits found in South Africa, central India and western Australia are of the same age as those in southern Canada. If so, then the ice age 2 billion years ago must have been very widespread and lasted for millions of years. Since then, the Earth has experienced several ice ages.
In about the next billion years, the earth has experienced at least six major ice ages, each occurring at an interval of about 150 million years and each lasting about 50 million years. As for why there are such periodic ice ages, this is a difficult mystery in the history of the earth. Scientists have put forward many theories in this regard, ranging from changes in ocean currents to periodic changes in sunspots. But no theory is tenable or convincing. Obviously, glaciation is caused by many factors, but one thing seems certain, the earth is still in an ice age.
The term glaciation may be a bit vague. Usually this refers to the period when parts of the Earth were covered by glaciers for one to two million years. These eras are usually marked by a series of glacial advances or interglacial periods (when glaciers stop advancing, melt, and retreat). But what geologists call an ice age is a period of global cooling that may have lasted millions of years. That epoch of 50 million years mentioned earlier is considered the Ice Age. It is clear that several glaciations could and did occur within an ice age.
The most recent ice age began about 65 million years ago, and seems to be coincidentally connected with the Cretaceous mass extinction. A large amount of evidence shows that the earth once collided with a huge comet or asteroid, and the remnants of the latter flew into outer space. A large amount of smoke and dust from the forest fires caused by the impact filled the lower atmosphere and blocked the sunlight. As a result, the earth's Temperatures plummeted and large amounts of acid rain were produced. In this way, the only remaining dinosaurs became extinct, and 3/4 of the existing plant and animal species died. This collision may also have changed the Earth's orbit to some extent, which is why the Earth always maintains this lower temperature, and there is no sign that the Earth may return to the hotter climate suitable for the growth of dinosaurs in the Mesozoic Era.
The beginning of the Ice Age was a slow process. Glaciers began to form in Antarctica about 65 million years ago. The ice surface became larger, smaller, and expanded again, gradually forming a thick bulging ice sheet. By about 20 million years ago, ice covered the entire Antarctic continent, a process that is still continuing today. It was not until about 12 million years ago that glaciers began to spread, move, and cover the Alaskan mountains.
Greenland glaciers were relatively young during the Ice Age, as the continent was not covered by glaciers until about 3 million years ago.
Time has entered a new ice age, which geologists call the Pleistocene. About 2 million years ago, massive glaciers began to move forward, sometimes covering a quarter of the Earth's land surface and being thousands of feet thick. During this last freezing period, the glacier melted at least four times, so it advanced and retreated several times. Now people are beginning to find some evidence that the next advance of the glacier is always more violent than the previous one. The most severe one occurred about 50,000 years ago and ended 10,000 years ago. Whenever there is an interglacial period, the global climate becomes warmer on average, much warmer than it is now. Interglacial periods usually last several thousand years.
Even at the peak of the last glacier advance, there were several pauses...