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Fundamentals of Physical Geography

2nd Edition
James Petersen
ISBN: 9781133606536

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BuyFindarrow_forward

Fundamentals of Physical Geography

2nd Edition
James Petersen
ISBN: 9781133606536
Textbook Problem

A barchan in Arizona migrated the following total annual amounts (in meters) in each the last 13 years, listed in order from oldest to most recent year: 9, 12, 14, 15, 15, 19, 22, 23, 26, 28, 29, 29, and 30. What was the total distance that the dune migrated during the 13 years, and what was its average annual migration rate for the study

To determine

The total distance that the dune migrated during 13 years and the average annual migration rate for the study period if a barchan in Arizona migrated in the following total annual amounts (in meters) in each in the last 13 years, listed in order from oldest to the most recent year: 9, 12, 14, 15, 15, 19, 22, 23, 26, 28, 29, 29, and 30. Also describe the overall trend in dune migration for this period and the factor or factors that might be responsible for the observed trend.

Explanation

Given info:

The amount at which dune migrated in 13 years is 9, 12, 14, 15, 15, 19, 22, 23, 26, 28, 29, 29, and 30.

Then,

The total distance of migration=Sum of the annual distances=9 + 12 + 14 + 15+ 15 + 19 + 22 + 23 + 26 + 28 + 29 + 29 + 30=271meters

Average annual migration rate=Sum of the annual distances13=9 + 12 + 14 + 15+ 15 + 19 + 22 + 23 + 26�

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