Examine the following Community Internet Intensity Map (CIIM) for the Whittier Narrows ear...

Examine the following Community Internet Intensity Map (CIIM) for the Whittier Narrows earthquake in southern California. This earthquake occurred 7 years before the Northridge earthquake (Figure 5.19). Compare and contrast the CIIMs for both events, and suggest possible explanations for the similarities and differences between the two maps.

Figure 5.19 Community Internet Intensity Map generated for the 1994 Northridge earthquake. A star marks the epicenter, and colored areas of the map indicate the earthquake intensity for each ZIP code area as reported by 8,401 responses to an online survey. The maximum measured intensity was IX, immediately adjacent to the epicenter.