Answered: 5. What is the magnitude (i.e. absolute…

Applications and Investigations in Earth Science (9th Edition)

9th Edition

ISBN:9780134746241

Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa

Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa

Chapter1: The Study Of Minerals

Section: Chapter Questions

Problem 1LR

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Transcribed Image Text:depth, m 50 100 150 200 horizontal velocity, m/y 10 bedrock 20 30 The figure at left shows the vertical velocity profile of the Athabasca Glacier in Canada, where its surface slope is 8°. Calculate each of the following at 165 m depth using the following depth and velocity data: At a depth of 150 m, the velocity is 24.5 m/yr, and at a depth of 180 m, the velocity is 17 m/yr. As usual, ice has a density of 900 kg/m³, g is 9.8 m/s², and in Glens flow law, n = 3. 5. What is the magnitude (i.e. absolute value) of the strain rate to the nearest hundredth, in yr-¹? 6. What is the shear stress driving that strain to the nearest bar? 7. What is the constant, A, in Glens flow law, to the nearest bar-³-s-¹? 8. What is the ice viscosity to the nearest kPa-yr? (Note that this is about 2 QUADRILLION times more viscous than water).

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