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Collection:
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NASA Scientific Visualization Studio Collection
Collection
NASA Scientific Visualization Studio Collection
Collection
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Title:
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Lake Chad Evaporation 1973 to 1987
Title
Lake Chad Evaporation 1973 to 1987
Title
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Instrument:
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Landsat-5/TM
Instrument
Landsat-5/TM
Instrument
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Instrument:
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Landsat-4/TM
Instrument
Landsat-4/TM
Instrument
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Description:
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Lake Chad in 1987
Description
Lake Chad in 1987
Description
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Abstract:
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Located on the edge of the Sahara and bordering four countries--Chad, Cameroon, Nigeria, and Niger--the immense area of this land locked lake has nearly disappeared in recent years. Persistent drought has caused the lake to drop from its former sixth place position in the list of world's largest lakes; it is now one tenth its former size.
The basin of the lake is not naturally deep, so the surface area of the lake tended to spread out, keeping the total depth to little more 23 feet (7 meters). In recent years, rainfall patterns have begun to change, and tributaries to Lake Chad have not been refilling the basin as rapidly as they used to. The lush, productive flora and fauna fed by the wetlands of the shallow lake have suffered as a result.
This has led to significant changes for various communities of people that live in the vicinity of the Lake. While for some the now exposed lake bed has enabled new land to be cultivated, much of the available fresh water that might have been used for irrigation is no longer dependable. As rainfall rates appear to be declining year after year, people living nearby develop even greater dependence on the lake, draining it even faster.
Abstract
Located on the edge of the Sahara and bordering four countries--Chad, Cameroon, Nigeria, and Niger--the immense area of this land locked lake has nearly disappeared in recent years. Persistent drought has caused the lake to drop from its former sixth place position in the list of world's largest lakes; it is now one tenth its former size.
The basin of the lake is not naturally deep, so the surface area of the lake tended to spread out, keeping the total depth to little more 23 feet (7 meters). In recent years, rainfall patterns have begun to change, and tributaries to Lake Chad have not been refilling the basin as rapidly as they used to. The lush, productive flora and fauna fed by the wetlands of the shallow lake have suffered as a result.
This has led to significant changes for various communities of people that live in the vicinity of the Lake. While for some the now exposed lake bed has enabled new land to be cultivated, much of the available fresh water that might have been used for irrigation is no longer dependable. As rainfall rates appear to be declining year after year, people living nearby develop even greater dependence on the lake, draining it even faster.
Abstract
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Completed:
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2001-02-22
Completed
2001-02-22
Completed
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Credit:
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*Please give credit for this visualization to*
NASA/Goddard Space Flight Center
Scientific Visualization Studio
Credit
*Please give credit for this visualization to*
NASA/Goddard Space Flight Center
Scientific Visualization Studio
Credit
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Studio:
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SVS
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Animator:
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Joycelyn Thomson (Lead)
Animator
Joycelyn Thomson (Lead)
Animator
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Scientist:
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Michael Coe (University of Wisconsin-Madison)
Scientist
Michael Coe (University of Wisconsin-Madison)
Scientist
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Series:
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Lake Chad Evaporation
Series
Lake Chad Evaporation
Series
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Data Collected:
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1973, 1987
Data_Collected
1973, 1987
Data Collected
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Keywords:
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DLESE
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Keywords:
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GCMD
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Keywords:
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Location
Keywords
Location
Keywords
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Keywords:
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Hydrology
Keywords
Hydrology
Keywords
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Keywords:
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Environmental science
Keywords
Environmental science
Keywords
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Keywords:
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Agricultural science
Keywords
Agricultural science
Keywords
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Keywords:
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EARTH SCIENCE
Keywords
EARTH SCIENCE
Keywords
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Keywords:
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Natural hazards
Keywords
Natural hazards
Keywords
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Keywords:
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Atmosphere
Keywords
Atmosphere
Keywords
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Keywords:
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Atmospheric Water Vapor
Keywords
Atmospheric Water Vapor
Keywords
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Keywords:
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Africa
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Keywords:
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Evaporation
Keywords
Evaporation
Keywords
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Keywords:
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Lake Chad
Keywords
Lake Chad
Keywords
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note:
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More Information on this topic available at
stories/earthday2001 /index.html
note
More Information on this topic available at
stories/earthday2001 /index.html
note
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Video:
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SVS2001-0005* * *
Video
SVS2001-0005* * *
Video
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facet_where:
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Wisconsin
facet_where
Wisconsin
facet_where
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facet_where:
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Madison
facet_where
Madison
facet_where
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facet_where:
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Cameroon
facet_where
Cameroon
facet_where
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facet_where:
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Chad
facet_where
Chad
facet_where
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facet_where:
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Niger
facet_where
Niger
facet_where
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facet_where:
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Nigeria
facet_where
Nigeria
facet_where
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facet_where:
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Goddard Space Flight Center (GSFC)
facet_where
Goddard Space Flight Center (GSFC)
facet_where
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facet_when:
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1987
facet_when
1987
facet_when
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facet_what:
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Landsat
facet_what
Landsat
facet_what
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facet_what:
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Earth
facet_what
Earth
facet_what
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facet_when_year:
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1987
facet_when_year
1987
facet_when_year
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Animation Number:
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2065
Animation_Number
2065
Animation Number
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UID:
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SPD-SCIVS-http://svs .gsfc.nasa.gov/vis/a 000000/a002000/a0020 65/Chad1987-IMAGE
UID
SPD-SCIVS-http://svs .gsfc.nasa.gov/vis/a 000000/a002000/a0020 65/Chad1987-IMAGE
UID
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original url:
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original_url
original url
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