Mapping Earthquakes in Northern California

Table of Contents

  1. Mapping Earthquakes in Northern California
  2. Setting Up Your Workspace
  3. Downloading Data from Natural Earth
  4. Download Data from the Northern California Earthquake Data Center (NCEDC)
  5. Skill Drill: Download Data from the United States Census Bureau
  6. Adding California as a Basemap Layer
  7. Skill Drill: Adding the Humboldt County Boundary as a Basemap Layer
  8. Adding XY Data
  9. Changing the Map Projection of the Data Frame
  10. Representing Earthquake Magnitude Using Graduated Symbols
  11. Changing the Map Size and Position
  12. Creating an Inset Map
  13. Inserting A Map Title
  14. Inserting a Map Legend
  15. Inserting a North Arrow, Scale Bar, and Acknowledgments
  16. Exporting your map as a PDF file

Skill Drill: Download Data from the United States Census Bureau

In a previous activity, you learned how to download data from the United States Census Bureau. Open the Chrome browser and navigate to the United States Census Bureau Cartographic Boundary Shapefile page at https://www.census.gov/geo/maps-data/data/tiger-cart-boundary.html.

If you do not have the Chrome browser, you can download it here.

Click the link under the header Nation-based Files that says County. On the Counties page, right-click the link to download the 500K resolution. Select, Save Link As, then browse to your Original folder and click Save. Decompress the file using 7zip. Be sure to delete the zip files when you are done decompressing them. You won’t need them anymore. Eliminating them saves space and helps to avoid confusion later.