Chapter Two

Ocean dimensions, shapes and bottom materials

Contents:

• Example 2A: Dimensions
  • Exercise 2A-01: First Things First - Start JOA and Set JOA Preferences
  • Exercise 2A-02: Ocean Maps - Making a Mercator Map
• Example 2B: Sea-floor Dimensions
  • Exercise 2B-01: Ocean Maps - Examining the World Ocean
  • Exercise 2B-02: Analyzing Mercator Projections
  • Exercise 2B-03: Ocean Maps - Map units and Dimensions
• Example 2C: Bathymetry
  • Exercise 2C-01: Bathymetry - Illustrating Bathymetry
  • Exercise 2C-02: Bathymetry - Configuration of the Ocean Bottom
• Example 2D: DPO Extra Topic; Map Projections
  • Exercise 2D-01: Map Projections - Analyzing Different Map Projections
  • Exercise 2D-02: Polar Projections
• Example 2E: DPO Extra Topic; Making a .joa file
  • Exercise 2E-01: Ocean Maps - Plot Your City’s Location

Data files supplied for Chapter 2 exercises

• SIO.joa

• mycity.jos

Download: Chapter 2 Data Files

Goals

• Gain familiarity with the basic geography of the principal ocean basins

• Locate typical ocean sub-regions

• Locate major features of the ocean bottom

To accomplish this, one will

• Make maps of the oceans

• Compare maps of the Atlantic, Indian, and Pacific Oceans

• Add bathymetry (‘bathy’ - deep, of the sea depths; ‘meter’ - measure) to the maps

• Locate

  • Basins

  • Continental shelves

  • Submarine ridges

  • Inter-basin sills

  • Fracture zones

  • Trenches

  • Seamount/island chains

  • Compare various map projections

The tool used for these examples is the built-in map function in the Java OceanAtlas application.

DPO Chapter 2 Sections

DPO JOA examples are available for the following emphasized sections:

2.1	Dimensions
2.2	Plate tectonics and deep-sea topography
2.3	Sea-floor features
2.4	Spatial scales
2.5	Shore, coast and beach
2.6	Continental shelf, slope and rise
2.7	Deep ocean
2.8	Sills, straits and passages
2.9	Methods for mapping bottom topography
2.10	Bottom Material
2.11	Ocean Basins

Note

Java OceanAtlas does not provide names for oceanographic features or regions. The DPO textbook, an atlas, or an online map may be a useful reference to these examples.

Additional Resources:

• Holt, Rinehart and Winston (Find a city’s coordinates): http://go.hrw.com/atlas/norm_htm/oceans.htm

• Google Earth application: http://earth.google.com/