2. the probability of an earthquake with a magnitude greater than six in a year is2%. Determine:A. probability that two earthquakes with magnitude greater than six happen in30 years.

To find the probability of two earthquakes with a magnitude greater than six happening in 30 years,…

Answered: 2. the probability of an earthquake…

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Q2
(1) In a hypothetical seismically active region, earthquakes have been recorded over an 80-year period. Part of the record is instrumental, but part is not. Combining all available data, it appears that earthquakes have been distributed as follows: Moment Magnitude (Number of Earthquakes): 3-4 (1800) , 4-5 (150) , 5-6 (11) , >6 (1) a. Estimate the Gutenberg-Richter parameter for the region. b. Neglecting earthquakes of magnitude less than 3, compute the probability that an earthquake in the region will have a moment magnitude between 5.5 and 6.5 c. Repeat Part (b) assuming that paleoseismic evidence indicates that the region is not capable of producing earthquakes of moment magnitude greater than 6.5.
Civil engineering A maximum amplitude of 1.4 m is recorded on Wood-Anderson Seismometer at a standard Richter Station. Describe the expected damage in a city located 150 km from the earthquake epicenter.
Historical record of Earthquakes in Pasadena from 1836 to 1961 shows that there were 16 earthquakes with ground intensity in MM-scale of VI or higher. If the occurrence of such high-intensity earthquakes can be assumed to constitute a Poisson process, what is the probability that the next high-intensity earthquake will occur within the next 2 years?
4.4 In a hypothetical seismically active region, earthquakes have been recorded over an 80-year period. Part of the record is instrumental, but part is not. Combining all available data, it appears that the earthquakes have been distributed as follows: MOMENT MAGNITUDE 3-4 4-5 5-6 > 6 NUMBER OF EARTHQUAKES ~1800 -150 11 1 (a) Estimate the Gutenberg-Richter parameters for the region. (b) Neglecting earthquakes of magnitude less than 3, compute the probability that an earth- quake in the region will have a moment magnitude between 5.5 and 6.5. (c) Repeat Part(b) assuming that paleoseismic evidence indicates that the region is not capable of producing earthquakes of moment magnitude greater that 6.5.
Earthquakes can result in various forms of damage, but many result in fault ruptures, or cracks in the Earth's surface. In a 1958 study† of earthquakes in California and Nevada, D.Tocher found the following relationship between the fault rupture length L, in kilometers, and the magnitude M (on the Richter scale) of an earthquake. L = 0.0000017 × 10.47M What fault rupture length would be expected from an earthquake measuring 6.3 on the Richter scale? (Round your answer to two decimal places.) kilometers
An earthquake was measured by a seismograph 180 kilometers from the epicenter that recorded a maximum of 0.5 µm. Find the magnitude of the earthquake.
An earthquake was measured by a seismograph 60 kilometers from the epicenter that recorded a maximum of 5.7 × 10^5 µm. Find the magnitude of the earthquake.
For Vp=5 km/s and Vs=3.5km/s, Analyse the time history of an earthquake as given in figure 2 to find: a. The epicentral distance in km.b. The size of earthquake in local magnitude ML.c. The origin time of the earthquake.
1)A water tank having a natural frequency of 0.5 Hz is subjected to an earthquake with a sinusoidal variation of acceleration with respect to time. The earthquake has displacement amplitude of 9″and exciting frequency of 1 Hz. Determine the amplitude of displacement and acceleration at the top end of water tank. Take ζ=5%.
Find how much more earth movement is caused by an earthquake of magnitude 6.9 than by an earthquake of magnitude 6.4.
11.2 Which one of the following earthquake-induced phenomena can affect buildings and other structures? • Ground rupture Soil liquefaction Tsunami Landslide Ground shaking

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2. the probability of an earthquake with a magnitude greater than six in a year is 2%. Determine: A. probability that two earthquakes with magnitude greater than six happen in 30 years.