Sahara mega engineering

1. Green mountain on
Ascension Island
Yuya Mitake
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2. Introduction
 Sahara irrigation project
►Sahara irrigation mega-project
►New valley project
►Sahara forest project
►KarToshka Project
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There are many projects to irrigate
the Sahara desert

3. Irrigation of Ascension Island
 Ascension Island
►Isolated volcanic island of the South Atlantic Ocean
►A part of a British Overseas Territory
 History
►1503:
Discovered on Ascension Day by Alphonse d’Albuquerque
►1821-1922:
 become a victualing station and care facility for ships engaged in
the suppression of the slave trade around the West African coast
►1943-1945:
During the Second World War the United States Government built
“Wide-awake Airfield” airstrip
►1967:
NASA tracking station was built and
supported the Apollo lunar landing programme
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4. Irrigation of Ascension Island
 Problems of the island
►It was a barren and dry volcanic island
►Ascension occupies a "hot spot" on the ridge, its volcano is
especially active
►It was born A million years ago, molten magma explosively
burst above the waves
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There are bright red volcanic cones and rugged black
lava

5. Irrigation of Ascension Island
 Problems of the island
►It was a barren and dry volcanic island
►Ascension occupies a "hot spot" on the ridge, its volcano is
especially active
►It was born A million years ago, molten magma explosively
burst above the waves
4
There are bright red volcanic cones and rugged black
lava
There are no green, and the crops are not brought up
Problem

6. Solution
 “Terra-forming“ the island
►In 1836: Charles Darwin land the Ascension island
►He create an artificial forest “Green mountain"
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1. Shipments of trees were to be sent to Ascension
2. Trees would capture more rain, reduce evaporation and create rich,
loamy soils
3. The trees capture sea mist, creating a damp oasis amid the aridity
4. the highest peak of "Green Mountain" is now known as a "cloud forest"

7. Solution
 “Terra-forming“ the island
►In 1836: Charles Darwin land the Ascension island
►He create an artificial forest “Green mountain"
6
1. Shipments of trees were to be sent to Ascension
2. Trees would capture more rain, reduce evaporation and create rich,
loamy soils
3. The trees capture sea mist, creating a damp oasis amid the aridity
4. the highest peak of "Green Mountain" is now known as a "cloud forest"
200 years ago Now

8. Solution
 “Terra-forming“ the island
►In 1836: Charles Darwin land the Ascension island
►He create an artificial forest “Green mountain"
7
1. Shipments of trees were to be sent to Ascension
2. Trees would capture more rain, reduce evaporation and create rich,
loamy soils
3. The trees capture sea mist, creating a damp oasis amid the aridity
4. the highest peak of "Green Mountain" is now known as a "cloud forest"
200 years ago Now
the world's first experiment in
"terra-forming"

9. Ascension island as sightseeing site
 Today’s island
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beautiful weather, crystal-clear and
unpolluted ocean, challenging terrain and
wonderful wildlife