Physical Geography Laboratory Manual Section Name EXERCISE 48 PROBLEMS-PART IV l
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Physical Geography Laboratory Manual Section Name EXERCISE 48 PROBLEMS-PART IV le (scale " The The following questions are based on Map T-14, the "Sumdum (D-4), Alaska" quadrang 1:63,360; contour interval 100 feet). The map shows two glaciers entering t Tracy Arm The "Sawyer Glacier" enters the Tracy Arm from the north and the "South Sawyer Glacier" enters the Tracy Arm from the southeast (57°52'27"N, 133 10'33"w). he "Tracy Arm. is a fjord just south of Juneau, Alaska (see Exercise 49 for a brief discussion of fjords). phic evidence (other than the glaciers entering the water) suggests that the What topogra Tracy Arm is a fjord? 1. Find the tributary glacier that enters the South Sawyer Glacier from the south (the tributary enters just east of the word Wilderness"). (a) What are the brown stripes along the sides 2. of the glacier (shown with brown stippling)? What are the brown stripes down the middle of the glacier? Explain how these stripes came to be in the middle of the glacier. (b) (c) 3. Find the word "South" in the label for the "South Sawyer Glacier" (in the east central part of the map). Assume that the rate of movement of this glacier is 9 inches (22 cm) per day (a hypothetical rate). How long would it take the ice to move from the location marked by the "S" in the word "South" to the water of the Tracy Arm? It may be easiest if you determine the distance in inches or centimeters, rather than in feet, miles, or kilometers. (a) Distance (from "S" to the water): feet (or meters) inches (or cm) (b) Time for ice to move to the Tracy Arm: years 4. Describe a location where a horn has developed at the top of a mountain peak. 5. Describe the location where an arête is being formed. 6. Describe the location of a glacier that is currently confined to a cirque. 340 Copyright 2017 Pearson Education, Inc.Explanation / Answer
Tracy Arm Fjord is the glaciated rock which is much bigger than before. It continues until the ocean. Ice fills up the valley up until the brim and continues until it reachs the ocean. This fjords have considerable floating ice which is ranging from hand-sized pieces to pieces which are as large as a a two-three story building. In glaciated period, both fjords filled with active glaciers.
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