The Greenland ice sheet covers an area of 660,000 square miles with an average thickness of 1.03 miles. The average elevation of the ice is 7000 feet above sea level. Over 200 million people currently live on soil that is less than 3 feet above sea level. In the United States, several large cities have low average elevations, such as Boston (14 feet), New Orleans (4 feet), and San Diego (13 feet). In this project you will estimate the rise in sea level if this ice sheet were to completely melt and determine whether this event would have significant impact on our world. In addition, you will discuss the accuracy and reliability of your calculation.
The Greenland ice sheet covers an area of 660,000 square miles with an average thickness of 1.03 miles. The average elevation of the ice is 7000 feet above sea level. Over 200 million people currently live on soil that is less than 3 feet above sea level. In the United States, several large cities have low average elevations, such as Boston (14 feet), New Orleans (4 feet), and San Diego (13 feet). In this project you will estimate the rise in sea level if this ice sheet were to completely melt and determine whether this event would have significant impact on our world. In addition, you will discuss the accuracy and reliability of your calculation.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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The Greenland ice sheet covers an area of 660,000 square miles with an average thickness of
1.03 miles. The average elevation of the ice is 7000 feet above sea level. Over 200 million
people currently live on soil that is less than 3 feet above sea level. In the United States,
several large cities have low average elevations, such as Boston (14 feet), New Orleans (4 feet),
and San Diego (13 feet). In this project you will estimate the rise in sea level if this ice sheet
were to completely melt and determine whether this event would have significant impact on
our world. In addition, you will discuss the accuracy and reliability of your calculation.
How many cubic miles of ice are there in this ice sheet?
(Hint: ?????? = ???? ∗ ?ℎ???????)
A. When ice melts, the resulting volume of water is about 92% of the volume of ice. If the
sheet were to melt, how many cubic miles of water would there be?
B. Earth is approximately spherical with an average radius of 3960 miles. Find the Earth’s
surface area. (Hint: ??????? ???? ?? ??ℎ??? = 4??
2
)
C. Find the percentage of Earth’s surface that is covered by water and determine how
many square miles this is.
D. Now imagine that all of the ice in the Greenland ice sheet melts and is “poured” into the
oceans. Calculate the rise in sea level in miles, i.e. the “thickness” of the water. Convert
your answer from miles to feet. (Hint: 1 ???? = 5280 ????)
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