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What types of information can be collected from ice cores quizlet?

Looking at snowfall in ice cores over such a long period of time can provide clues to climate change by providing evidence of temperature, precipitation, and atmospheric conditions.

What has ice core data shown about climate change?

Ice cores provide direct information about how greenhouse gas concentrations have changed in the past, and they also provide direct evidence that the climate can change abruptly under some circumstances.

What information could be determined from dust in ice core samples?

Ice core records can be used to reconstruct temperature, atmospheric circulation strength, precipitation, ocean volume, atmospheric dust, volcanic eruptions, solar variability, marine biological productivity, sea ice and desert extent, and forest fires. The GISP2 ice core in Greenland was drilled as deep as 2 miles.

What does the Vostok ice core reveal?

Ice cores are unique with their entrapped air inclusions enabling direct records of past changes in atmospheric trace-gas composition. Preliminary data indicate the Vostok ice-core record extends through four climate cycles, with ice slightly older than 400 kyr (Petit et al.

Which year has the highest concentration of carbon dioxide?


How far back in time does the Vostok ice core go?

800,000 years

How far back can ice cores date?

The deepest ice core records come from Antarctica and Greenland, where the very deepest ice cores extend to 3 kilometers (over two miles) in depth. The oldest continuous ice core records extend to 130,000 years in Greenland, and 800,000 years in Antarctica.

How old is the ice in Antarctica?

about 800,000 years old

Why does an ice age occur?

An ice age is triggered when summer temperatures in the northern hemisphere fail to rise above freezing for years. The onset of an ice age is related to the Milankovitch cycles – where regular changes in the Earth’s tilt and orbit combine to affect which areas on Earth get more or less solar radiation.

Are we due for an ice age?

“Pink elephant in the room” time: There is no impending “ice age” or “mini ice age” if there’s a reduction in the Sun’s energy output in the next several decades. Through its lifetime, the Sun naturally goes through changes in energy output.

What animals died during the ice age?

Most of the animals that perished at the end of the last ice age were called the megafauna or animals over 100 pounds. Huge multi-ton animals like mastodons and mammoths disappeared along with apex predators like saber-toothed tigers and dire wolves.

How long was the Ice Age last?

The Ice Ages began 2.4 million years ago and lasted until 11,500 years ago. During this time, the earth’s climate repeatedly changed between very cold periods, during which glaciers covered large parts of the world (see map below), and very warm periods during which many of the glaciers melted.