Homework Help is Here – Start Your Trial Now!
Science
Earth Science
2. Gravity readings taken over the suspected location of a tunnel yielded the Bouguer Anomaly profile shown in Figure 1. Assume that the tunnel may be modelled as a horizontal cylinder, orientated perpendicular to the profile line and that the bedrock has a density of 2500 kg/m³. Bouguer Anomaly (mGal) 0.15 0.10 0.05 0.00 -0.05 -0.10 40 60 Distance along profile (m) Figure 1. Gravity profile over a suspected tunnel. 0 20 a) Estimate the regional field. 80 100 b) Use the residual anomaly to calculate an estimate for the depth to the top of the cylinder and the radius of the tunnel assuming it is filled with air c) List four factors that cause the acceleration due to gravity (g) to vary across the surface of the Earth

2. Gravity readings taken over the suspected location of a tunnel yielded the Bouguer Anomaly profile shown in Figure 1. Assume that the tunnel may be modelled as a horizontal cylinder, orientated perpendicular to the profile line and that the bedrock has a density of 2500 kg/m³. Bouguer Anomaly (mGal) 0.15 0.10 0.05 0.00 -0.05 -0.10 40 60 Distance along profile (m) Figure 1. Gravity profile over a suspected tunnel. 0 20 a) Estimate the regional field. 80 100 b) Use the residual anomaly to calculate an estimate for the depth to the top of the cylinder and the radius of the tunnel assuming it is filled with air c) List four factors that cause the acceleration due to gravity (g) to vary across the surface of the Earth

Applications and Investigations in Earth Science (9th Edition)
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
See similar textbooks
icon
Related questions
Question
2. Gravity readings taken over the suspected location of a tunnel yielded the Bouguer Anomaly profile shown in Figure 1. Assume that the tunnel may be modelled as a horizontal cylinder, orientated perpendicular to the profile line and that the bedrock has a density of 2500 kg/m³. Bouguer Anomaly (mGal) 0.15 0.10 0.05 0.00 -0.05 -0.10 0 20 40 60 Distance along profile (m) Figure 1. Gravity profile over a suspected tunnel. a) Estimate the regional field. 80 100 b) Use the residual anomaly to calculate an estimate for the depth to the top of the cylinder and the radius of the tunnel assuming it is filled with air c) List four factors that cause the acceleration due to gravity (g) to vary across the surface of the Earth
Transcribed Image Text:2. Gravity readings taken over the suspected location of a tunnel yielded the Bouguer Anomaly profile shown in Figure 1. Assume that the tunnel may be modelled as a horizontal cylinder, orientated perpendicular to the profile line and that the bedrock has a density of 2500 kg/m³. Bouguer Anomaly (mGal) 0.15 0.10 0.05 0.00 -0.05 -0.10 0 20 40 60 Distance along profile (m) Figure 1. Gravity profile over a suspected tunnel. a) Estimate the regional field. 80 100 b) Use the residual anomaly to calculate an estimate for the depth to the top of the cylinder and the radius of the tunnel assuming it is filled with air c) List four factors that cause the acceleration due to gravity (g) to vary across the surface of the Earth
Expert Solution
steps

Step by step

Solved in 2 steps

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Recommended textbooks for you
Applications and Investigations in Earth Science …
Applications and Investigations in Earth Science …
Earth Science
ISBN:
9780134746241
Author:
Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:
PEARSON
Exercises for Weather & Climate (9th Edition)
Exercises for Weather & Climate (9th Edition)
Earth Science
ISBN:
9780134041360
Author:
Greg Carbone
Publisher:
PEARSON
Environmental Science
Environmental Science
Earth Science
ISBN:
9781260153125
Author:
William P Cunningham Prof., Mary Ann Cunningham Professor
Publisher:
McGraw-Hill Education
Earth Science (15th Edition)
Earth Science (15th Edition)
Earth Science
ISBN:
9780134543536
Author:
Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:
PEARSON
Environmental Science (MindTap Course List)
Environmental Science (MindTap Course List)
Earth Science
ISBN:
9781337569613
Author:
G. Tyler Miller, Scott Spoolman
Publisher:
Cengage Learning
Physical Geology
Physical Geology
Earth Science
ISBN:
9781259916823
Author:
Plummer, Charles C., CARLSON, Diane H., Hammersley, Lisa
Publisher:
Mcgraw-hill Education,
SEE MORE TEXTBOOKS