18 Questions
What is the main focus of engineering seismology?
Characterizing seismic hazards at a site or region
Which term refers to the geographical point on the ground surface where an earthquake is estimated to be centered?
Epicenter
What does the term 'Dip Slip' refer to in earthquake engineering?
A fault slip with vertical movement
At what focal depth are earthquakes classified as shallow according to engineering seismology?
Less than 43 miles
What is the role of strike angle in seismic activity?
Influences the direction of fault plane movement
Which term describes the relative displacement between the two sides of a fault plane?
Fault slip
What is the main difference between the deterministic and probabilistic approach in earthquake hazard assessment?
The deterministic approach lacks consideration for uncertainties, while the probabilistic approach includes uncertainties.
What is the final step in the deterministic approach to earthquake hazard assessment?
Selecting the case that produces the largest structural response
Why are probabilistic seismic hazard maps used in contemporary seismic design codes?
To account for uncertainties in seismic hazard assessment
What do probabilistic seismic hazard zone maps aim to minimize?
The risk to human life from earthquakes
Which step is included in the probabilistic approach but not in the deterministic approach?
Including uncertainties in each step
What do seismic hazard maps based on past geographic seismology depict?
The probability of strong shaking in an area
What determines the vibration characteristics of a flexible underlying deposit?
Inherent stiffness and damping
Why do intensity and magnitude scales not necessarily provide a measure of seismic hazard at a particular site?
Not all regions are susceptible to strong earthquakes
What is the most significant risk to people in seismically active regions during earthquakes?
Shaking of buildings and structures
What do deterministic and probabilistic methods used to characterize seismic hazards primarily focus on?
Shaking effects
Why might the measurements of past earthquakes (intensity and magnitude) not properly represent future ones?
Changes in fault behavior over time
How does hard rock behave in terms of vibration during seismic events?
Vibrates with same frequency and amplitude as input motion
Explore the essential concepts of seismology in earthquake engineering through this overview. Learn about the scientific study of seismic activity, propagation of seismic waves, and environmental effects of earthquakes.
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