EQ1 the global hydrological cycle statistics Flashcards by Kyizom Tenzin

Flashcards in EQ1 the global hydrological cycle statistics Deck (10)

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what percentage of water on earth occurs as fresh water?

2.5%

what percentage of this fresh water is accessible and where is the majority of the worlds fresh water located??

1% accessible
2/3 rds of world's freshwater is locked up in the cryosphere

TROPICAL RAINFORESTS HYDROLOGY
what % of precip. is consumed by dense vegetation and how much is l returned by evapotrans. ?

75% of precipitation
50-75% is returned by evapotrans.

TROPICAL RAINFOREST HYDROLOGY
annual precipitation is how much?

2000 mm

POLAR HYDROLOGY
what is the annual precipitation?

less than 200 mm

where is most of the world's water located and how much?

96.5% in the oceans

what % of water is in the ice caps?

nearly 2%

what water store has the longest residence time?

groundwater - 10,000 years
ice cap- 15,000 years depending on size

DEFORESTATION IN AMAZON FOREST
Effects of deforestation in Amazon basin?

- Reduction of nearly around 324km^3 of river runoff by deforestation & human regulation of river flow
- reduction of vegetation = increased surface run off and less infiltration = higher river levels after rainfall
- drop in green water stores and increase in blue water stores
- conventional and frontal rainfall/ precipitation recycling is not able to occur due to decrease in evapotranspiration

WATER ABSTRACTION IN THE ARAL SEA
What happened to the Aral Sea?

- Diversion of rivers that fed it = shrinking of sea by 10% in 1999 - splitting it into 4 lakes for Soviet irrigation projects
- By 2014 most of Aral Sea had dried up only the eastern basin remains

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PHYSICAL GEOG; WATER CYCLE AND WATER INSECURITY > EQ1 the global hydrological cycle statistics > Flashcards

what percentage of water on earth occurs as fresh water?

2.5%

what percentage of this fresh water is accessible and where is the majority of the worlds fresh water located??

1% accessible
2/3 rds of world's freshwater is locked up in the cryosphere

TROPICAL RAINFORESTS HYDROLOGY
what % of precip. is consumed by dense vegetation and how much is l returned by evapotrans. ?

75% of precipitation
50-75% is returned by evapotrans.

TROPICAL RAINFOREST HYDROLOGY
annual precipitation is how much?

2000 mm

POLAR HYDROLOGY
what is the annual precipitation?

less than 200 mm

where is most of the world's water located and how much?

96.5% in the oceans

what % of water is in the ice caps?

nearly 2%

what water store has the longest residence time?

groundwater - 10,000 years
ice cap- 15,000 years depending on size

DEFORESTATION IN AMAZON FOREST
Effects of deforestation in Amazon basin?

WATER ABSTRACTION IN THE ARAL SEA
What happened to the Aral Sea?

- Diversion of rivers that fed it = shrinking of sea by 10% in 1999 - splitting it into 4 lakes for Soviet irrigation projects
- By 2014 most of Aral Sea had dried up only the eastern basin remains

Decks in PHYSICAL GEOG; WATER CYCLE AND WATER INSECURITY Class (5):

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EQ1 the global hydrological cycle statistics Flashcards Preview

PHYSICAL GEOG; WATER CYCLE AND WATER INSECURITY > EQ1 the global hydrological cycle statistics > Flashcards

what percentage of water on earth occurs as fresh water?

2.5%

what percentage of this fresh water is accessible and where is the majority of the worlds fresh water located??

1% accessible 2/3 rds of world's freshwater is locked up in the cryosphere

TROPICAL RAINFORESTS HYDROLOGYwhat % of precip. is consumed by dense vegetation and how much is l returned by evapotrans. ?

75% of precipitation 50-75% is returned by evapotrans.

TROPICAL RAINFOREST HYDROLOGYannual precipitation is how much?

2000 mm

POLAR HYDROLOGY what is the annual precipitation?

less than 200 mm

where is most of the world's water located and how much?

96.5% in the oceans

what % of water is in the ice caps?

nearly 2%

what water store has the longest residence time?

groundwater - 10,000 years ice cap- 15,000 years depending on size

DEFORESTATION IN AMAZON FOREST Effects of deforestation in Amazon basin?

WATER ABSTRACTION IN THE ARAL SEAWhat happened to the Aral Sea?

- Diversion of rivers that fed it = shrinking of sea by 10% in 1999 - splitting it into 4 lakes for Soviet irrigation projects - By 2014 most of Aral Sea had dried up only the eastern basin remains

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1% accessible
2/3 rds of world's freshwater is locked up in the cryosphere

TROPICAL RAINFORESTS HYDROLOGY
what % of precip. is consumed by dense vegetation and how much is l returned by evapotrans. ?

75% of precipitation
50-75% is returned by evapotrans.

TROPICAL RAINFOREST HYDROLOGY
annual precipitation is how much?

POLAR HYDROLOGY
what is the annual precipitation?

groundwater - 10,000 years
ice cap- 15,000 years depending on size

DEFORESTATION IN AMAZON FOREST
Effects of deforestation in Amazon basin?

WATER ABSTRACTION IN THE ARAL SEA
What happened to the Aral Sea?

- Diversion of rivers that fed it = shrinking of sea by 10% in 1999 - splitting it into 4 lakes for Soviet irrigation projects
- By 2014 most of Aral Sea had dried up only the eastern basin remains