glaciers and ice-sheets Flashcards

You may prefer our related Brainscape-certified flashcards:
1
Q

cyrosphere

A

termfor the portions of the Earths surface where water is solid form inclusing sea ice, lake ice, river ice + snow cover

most seasonal change:
-sea ice
-peri-glacial zones
-subject to the most seasonal change in ice volume
-land, such as tundra, covered by snow every winter

less seasonal variation:
-land covered by glaciers
-ice sheets
-land underlain by permafrost
-less seasonal variation, due to larger volumes of ice.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

glaciers

A

a body of ice formed on land and and in motion, confined by terrain (most commonly valleys)

most common in Alpine areas:
height + cold + snowfall

see diagram in notebook

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

ice sheet

A

vast masses of ice that bury land beneath them and are not confined to valleys.

Antarctica and Greenland ice sheets have 99% of freshwater ice.

large land form

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

ice sheet loss in greenland

A

from 1992-2022 ice sheets have estimated to have lost approx. 1,140 billion tons

21% mass loss

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

glacier loss in Greenland

A

176 billion tons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

global sea level rise on greenland

A

7.2 meters

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

unemployment rates in Greenland:

A

has an aging population
10% unemployment rate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

loss of indigenous cultures in Greenland:

A

include inuit + eskimos
Greenlandic indigenous cultures rely on both sea ice and inland ice for food security, travel and indigenous traditions.

therefore ice melt will lead to a loss of indigenous cultures, which have previously lasted thousands of years.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

loss of freshwater in Greenland:

A

melting of glaciers means less clean water for a population.
+
less water available to irrigation.

2.5 million litres the entire year of ice has been lost.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Greenland economy product trade:

A

Melting ice therefore changes sea level an temperature killing off large amounts of fish or displacing them through migration, meaning it is more difficult to fish.

The surface waters surrounding Greenland have warmed by approximately 0.5°C to 1.5°C over the past few decades

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Greenland tourism loss:

A

In 2019, Greenland saw around 100,000 tourists
-decreased in previous years

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

fun fact

A

if all of Greenlands glaciers melt, sea levels will be 7 meters above present day

How well did you know this?
1
Not at all
2
3
4
5
Perfectly