Sand and 8. The accompanying image shows a double- decked section of Interstate

Question

Sand and 8. The accompanying image shows a double- decked section of Interstate 880 (the Nimitz Freeway) that collapsed during the 1989 Loma Prieta carthquake and caused 42 deaths. AboutSoft mud 1.4 kilometers (0.9 mile) of this freeway sec- tion, commonly called the Cypress Viaduct, collapsed, while a similar section survived the vibration. Both sections were su ished and rebuilt as a single-level structure, at a cost of $1.2 billion. Examine the map and seismograms from an aftershock that shows the intensity of shak- ly demol # 1-1 Cypress Viaduct #2 ing observed at three nearby locations to answer the following questions: Oakland a. What type of ground material experienced the least amount of shaking during the aftershock? What type of ground materials experienced the greatest amount of ground shaking during the same event? b. c. Which of the two sections of the Cypress Viaduct shown on the map do you think col lapsed? Explin the San Andraini Fal t but

Explanation / Answer

The magnitude of earthquake is calculated by seeing the amplitude of the earthquake, which is the peak of the highest wave and since more the height of the wave more is the amplitude and more is magnitude therefore we can say that softmud experienced the maximum shaking while bedrock experienced minimum shaking.

a. As mentioned above the bedrock experienced minimum shaking.

b. As mentioned above the softmud experienced maximum shaking.

c. The sections containg softmud and the section containing sand and gravel might have collapsed.

Related Questions

Navigate

• Browse (All)
• Browse S
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.