GY305 Global Geophysics: Lab 1 Given the below information, calculate the linear velocity and azimuth of Problem 1: relative plate motion for point X on the plate boundary between the Pacific and Antarctic plate: -64.3̊ λP 96.0̊ φP -56.7 λX -140.0 φX 9.1x10-7 deg/yr ω R 6371 km You will solve this problem with an Excel spreadsheet. Print out your solution on a single sheet of paper, and turn in the spreadsheet on a jump drive. Problem 2: With the attached tectonic map (Figure 1) of the North American Juan de – Fuca Pacific plate triple point, calculate the linear rate and orientation (azimuth) of the – velocity vector of the North American plate relative to the Juan de Fuca plate. Use the method of vector addition (circuit diagram). This problem should be worked graphically on a separate sheet of paper with a north arrow for reference. What is the rate of subduction of the Juan de Fuca ? Velocity of the NA plate relative to the Juan de Fuca plate (cm/yr):____________ Azimuth of the velocity vector: ___________________ Rate of subduction of Juan de Fuca plate: ________________
GY305 Global Geophysics: Lab 1 Problem 1: Given the below information, calculate the linear velocity and azimuth of relative plate motion for point X on the plate boundary between the Pacific and Antarctic plate: λP -64.3̊ φP 96.0̊ λX -56.7 φX -140.0 ω 9.1x10-7 deg/yr R 6371 km You will solve this problem with an Excel spreadsheet. Print out your solution on a single sheet of paper, and turn in the spreadsheet on a jump drive. Problem 2: With the attached tectonic map (Figure 1) of the North American – Juan de Fuca – Pacific plate triple point, calculate the linear rate and orientation (azimuth) of the velocity vector of the North American plate relative to the Juan de Fuca plate. Use the method of vector addition (circuit diagram). This problem should be worked graphically on a separate sheet of paper with a north arrow for reference. What is the rate of subduction of the Juan de Fuca ? Velocity of the NA plate relative to the Juan de Fuca plate (cm/yr):____________ Azimuth of the velocity vector: ___________________ Rate of subduction of Juan de Fuca plate: ________________
GY305_Lab1.docx