This exercise is intended to help students to understand how to create maps from three-dimensional data.
The file odp659data.txt contains marine oxygen isotope data from foraminifera sampled from a deep-see sediment core. The location of the sediment core is offshore West Africa (18°04.63’N, 21°01.57’W).
(1) Create a filled contour map of the West African shore using the ETOPO1 data set. The contour map shows the location of the ODP 659 core. The location is labeled “ODP 659”.
(2) Create a three-dimensional graph of the West African shore using the ETOPO1 data set. The contour map shows the location of the ODP 659 core. The location is labeled “ODP 659”.
Please export the first graph as Encapsulated Level 2 Color PostScript file. Export the second graph as 70% JPEG with 600 dpi resolution.
Solution
Here is a possible solution of the exercise. First you need to download the ETOPO1 data set for longitudes -30 to -10 deg and latitudes 10 to 30. You need to rename to file exercise_4_solution.m before using it with MATLAB. Please send me your comments, improvements, corrections!