Note: These instructions have been prepared to provide you assistance in operating the GEE program. All highlighted items are menu items that you will employ.

Exploration Phase: Question 1:

1. Select ÔGEEÕ icon - double click. The Global Earthquake Explorer [GEE]

window will open.

2. Single click on ÔDetecting the Layered EarthÕ. A brief introductory statement will appear. Click on the ÒSeismogram DisplayÓ tab to begin the exercise.

3. To pick wave arrival times: Select (single click) on the Pick Zone icon (the icon showing a red bar across a seismogram.) Then highlight a particular area on a seismogram by clicking and then dragging on a seismogram. When you release the mouse button a magnified view of the highlighted area will appear in the ÔPick ZoneÕ window. Repeat for additional wave arrivals and/or seismographs. They will appear in same window. Close this window when completed with task.

4. Click on the ÒMapÓ tab at the top of the window. Map image should now be visible. Seismograph Stations appear as red triangles. Earthquake Epicenter appears as a purple star.

Question 2:

5. When finished with the previous task, click the ÒRecord SectionÓ tab at the top of the window.

6. Select the ÔToolsÕ drop down menu Ð Click on ÔEvent and Station InfoÕ; a new window will open Note: This window will provide information concerning the Seismogram ÔStation Õ and/or the actual ÔEventÕ [Earthquake].

Question 3:

7. Close ÔShow Event and Station InformationÕ window when finished with task.