Posted: February 10th, 2021
Charts and maps are basic tools of ocean navigation. They contain important information such as ocean depth, geographic features and landmarks, and latitude and longitude. So there’s a volcano below you, can the day get any worse? In the map case you find a bathymetric map of the Pacific Ocean (how convenient). Notice how many other atolls are on the map. This used to be a volcanically active area!
To help you understand the oceanic world, you’ll need to refresh your mapping and navigational skills. There is a computer on the Captain’s desk. You’ll need to use it to help you complete the task for the Captain. Answer the following questions using your survival skills and the internet.
Interpret ocean floor physiography, relief, and depths from bathymetric maps and charts.
Answer the following questions using your survival skills and the internet.
Bathymetry is the measurements of water depths. One way to visualize the seafloor is by using a contour map. Contours are lines drawn connecting points of equal depth. It’s like “connect the dots” but with a twist. The lines are called isobaths, a line on a map that connects all points having the same depth below sea-level. Watch the first 6 minutes of this video, How to Draw Contours http://www.youtube.com/watch?v=L6FbV0LiA_k. The twist is that the depths for the isobaths may not be marked on the map; you’ll have to make an educated guess.
Figure 4. A blank contour profile map.
Answer the four questions on a word processing document. Once you have finished the assigned task, submit the document to the Captain’s dropbox, including a screen shot of your Ocean Basin activity, and Figure 1, Figure 2, and Figure 4.
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