The U.S. Geological Service recently released an update of U.S. National Seismic Hazard Maps that reflect the latest analysis of where future earthquakes will occur, how frequently they may occur, and their strength.
While all states have some potential for earthquakes, 42 of the 50 states have a reasonable chance of experiencing damaging ground shaking from an earthquake in the next 50 years. Sixteen states have a relatively high likelihood of experiencing damaging ground shaking. These states have historically experienced earthquakes with a magnitude 6 or greater. The hazard is especially high along the west coast, intermountain west, and in several active regions elsewhere such as near New Madrid, Mo., and near Charleston, S.C.
The eastern U.S. has the potential for larger and more damaging earthquakes than considered in previous maps and assessments. This finding is due to what scientists learned following the magnitude 5.8 earthquakes that struck Virginia in 2011. It was among the largest earthquakes to occur along the east coast in the last century, and indicated that even larger events in the region are possible.
The maps are used in risk analyses calculated using factors such as population levels, building exposure, and building construction practices. These assessments are used for establishing building codes, in the analysis of seismic risk for key structures, and in determining insurance rates. They can also aid emergency preparedness plans, and private property decisions such as re-evaluating one’s real estate and making it more resilient.
(http://www.usgs.gov/blogs/features/usgs_top_story/new-insight-on-the-nations-earthquake-hazards/)
Related Stories
Codes and Standards | May 6, 2021
Blue roofs can provide relief to overwhelmed stormwater systems
Benefits most evident in industrial commercial areas.
Codes and Standards | May 5, 2021
Majority of schools took steps to improve air quality during pandemic
Districts still have unmet needs, face high costs and outdated building infrastructure.
Codes and Standards | May 4, 2021
Cost to keep Miami dry over next few decades is $4 billion
Rising seas demand big investment.
Codes and Standards | May 3, 2021
Fire stops critical to preserving three-decker housing
Old multi-family structures continue to provide badly needed homes in urban zones.
Codes and Standards | Apr 29, 2021
Dept. of Energy publishes energy savings analysis for ANSI/ASHRAE/IES Standard 90.1-2019
More than 4% savings for commercial buildings found for the updated code.
Codes and Standards | Apr 28, 2021
Building-integrated solar power turns buildings into power plants
Multiple alternatives could replace or complement rack-mounted PV arrays.
Codes and Standards | Apr 27, 2021
Ten real estate groups sign on to New York State’s high-rise decarbonization challenge
Each signee commits to carbon neutrality in one or more high-rise buildings it owns.
Codes and Standards | Apr 26, 2021
Dozens of companies, organizations call for Congress to double Energy Star funding
Despite broad support, program’s budget has steadily declined in recent years.
Codes and Standards | Apr 22, 2021
Alabama fire chiefs oppose proposal to change school building code oversight
Bill would move code compliance control from state to local boards.
Codes and Standards | Apr 21, 2021
After dry winter, California ramps up wildfire prevention efforts
State to spend half a billion dollars on projects including making buildings more fire resistant.
