Integrated Science
7th Edition
ISBN: 9780077862602
Author: Tillery, Bill W.
Publisher: Mcgraw-hill,
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Chapter 16, Problem 1PEA
Compare the energy released by a small atomic bomb blast (magnitude 4.0) to an earthquake of 9.1 magnitude.
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Recall the formula for calculating the magnitude of an earthquake, M =
E
Eo
earthquake has magnitude 3.9 on the MMS scale. If a second earthquake has 800 times as much energy
log
One
as the first, find the magnitude of the second quake.
Round to the nearest hundredth.
The magnitude of the second earthquake was
Number
If one earthquake has a magnitude of 5 on the Richter scale and a second earthquake has a magnitude of 6,
what is the relationship between the intensities of the two earthquakes?
Calculate the surface wave magnitude MS for an earthquake with IMM of VII, in an area that can be
approximated by a circle with radius 20 km for a site at the borders of the given isoseismal. This site is
located in the western United States. Compare the ensuing value with the estimations from relationships
with other magnitude scales. Calculate the fault surface displacements. Assume that the earthquake
mechanism is normal faulting.
Chapter 16 Solutions
Integrated Science
Ch. 16.1 - Prob. 1SCCh. 16.2 - Prob. 2SCCh. 16.2 - Prob. 3SCCh. 16.2 - Prob. 4SCCh. 16.3 - Prob. 5SCCh. 16.3 - Prob. 6SCCh. 16.3 - Prob. 7SCCh. 16.4 - Prob. 8SCCh. 16.5 - Prob. 9SCCh. 16.5 - Prob. 10SC
Ch. 16.5 - Prob. 11SCCh. 16.5 - Prob. 12SCCh. 16 - Prob. 1CQCh. 16 - Prob. 2CQCh. 16 - Prob. 3CQCh. 16 - Prob. 4CQCh. 16 - Prob. 5CQCh. 16 - Prob. 6CQCh. 16 - Prob. 7CQCh. 16 - Prob. 8CQCh. 16 - Prob. 9CQCh. 16 - Prob. 10CQCh. 16 - Prob. 11CQCh. 16 - Prob. 12CQCh. 16 - Prob. 13CQCh. 16 - Prob. 14CQCh. 16 - Prob. 15CQCh. 16 - Prob. 16CQCh. 16 - Prob. 17CQCh. 16 - Prob. 18CQCh. 16 - Prob. 19CQCh. 16 - Prob. 20CQCh. 16 - Prob. 21CQCh. 16 - Prob. 22CQCh. 16 - Prob. 23CQCh. 16 - Prob. 24CQCh. 16 - Prob. 25CQCh. 16 - Prob. 26CQCh. 16 - Prob. 27CQCh. 16 - Prob. 28CQCh. 16 - Compare the energy released by a small atomic bomb...Ch. 16 - Prob. 2PEACh. 16 - Prob. 3PEACh. 16 - Prob. 4PEACh. 16 - Prob. 5PEACh. 16 - Prob. 6PEACh. 16 - Prob. 7PEACh. 16 - Prob. 8PEACh. 16 - Prob. 9PEACh. 16 - Prob. 10PEACh. 16 - Prob. 1PEBCh. 16 - Prob. 2PEBCh. 16 - Prob. 3PEBCh. 16 - Prob. 4PEBCh. 16 - Prob. 5PEBCh. 16 - Prob. 6PEBCh. 16 - Prob. 7PEBCh. 16 - Prob. 8PEBCh. 16 - Prob. 9PEBCh. 16 - Prob. 10PEB
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- If you wanted to live where the chances of a destructive earthquake were small, would you pick a location near a fault zone, near a mid ocean ridge, near a subduction zone, or on a volcanic island such as Hawaii? What are the relative risks of earthquakes at each of these locations?arrow_forwardA seismic station located 60 km from the epicenter of an earthquake, recorded the maximum height of the S-waves to be 50 mm. What was the Richter magnitude of this earthquake?arrow_forwardWhat would be the maximum height of an S-wave, if an earthquake with a Richter magnitude of 2.7was detected at a distance of 20 km. from the epicenter?arrow_forward
- The intensity of a wave of an earthquake is measured as 9 J/m². At a different point 8.6 km away from the first point the intensity is reduced by 20%. At what distance from the centre of the earthquake is the first intensity measured. Please give your result in km with 1 decimal. (The centre of the earthquake, the first point and the second point should all be in one straight line).arrow_forwardThe energy released in an aftershock is 1/8 of that in an earthquake with a magnitude of 7.2 on the Richter scale. Find the magnitude of the aftershock on the Richter scale. (Give your answer correct to 1 decimal place.)arrow_forwardIf the Richter scale is altered so that it compares energy released instead of intensity, the definition of the scale becomes M2 - M1 = LOG31 (E2 / E1). a) If the magnitude of an earthquake is increased by 1 on the scale, by what factor is the energy released multiplied? b) What is the magnitude of an earthquake that releases 200 times the energy of an earthquake with magnitude 4.5? c) How many times greater is the energy released from an earthquake with magnitude 9.0 than that of an earthquake with magnitude 6.5?arrow_forward
- A recent magnitude 6.0 Earthquake was recorded. Earthquakes represent a release of energy as a result of the earth's tectonic plates. a) Determine the amount of energy released in ergs. b) Determine the energy release in Joules. ( Hint use the earthquake formula M = 2/3 log (E/ 10^11.8); where M is the earthquake magnitude and E is the energy of the earthquake in ergs (recall 1 erg = 10^-7 Joules)).arrow_forwardOn August 17, 1983, an earthquake with a magnitude of 5.3 in the Richter scale hit the province of llocos Norte. This was the most sever earthquake in North-western Luzon in 52 years and probably the second largest earthquake to hit Laoag City and its immediate vicinity in historical times (Source: philvocs.dost.gov.ph). How much energy was released by the earthquake? 8.51 x 107 joules 2.24 x 1012 joules 2.42 x 1012 joules 8.15 x 10' joulesarrow_forwardAn earthquake occurs 6,875 km from a seismograph. The P-waves arrive 11.6 minutes later. How fast is the P-wave traveling (in km/s)? If the lag time between P- and S-waves is 10.8 minutes, how fast are the S-waves traveling (in km/s)? Using the shadow of S-waves you determine that the radius of the core is 55% of the Earth's 6,378-km radius. How many kilometers from the surface is this (in km)? To calculate how fast the P-waves are traveling, we need to divide the distance the waves travel by the time. vP = d s vP = km/sarrow_forward
- What is the measurement of an earthquake releasing 3.2 x 10^10 joules of energy on the Richter scale?arrow_forwardA strong R = 6.2 magnitude earthquake struck off a group of islands, where R is the Richter number. Its intensity is of the form I=aR. Find a. (Enter an exact number.)arrow_forwardIf an earthquake measures 7.9 on the Richter Scale, what is the intensity of this earthquake, relative to a 0-level earthquake? Round off your answer to the nearest integer.arrow_forward
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