16 U.S. States at High Risk of Damaging Earthquakes -USGS

Posted by Joseph R. Fonseca
Saturday, July 19, 2014
States affected by seismic activity


Sixteen states are at high risk of damaging earthquakes over the next 50 years and certain areas of the United States face a higher threat of temblors than previously thought, a federal geological survey agency said.

The findings come from updated earthquake hazard maps that were released by the U.S. Geological Survey on Thursday. The maps are used to help define safe building codes, help emergency responders plan after a quake, and influence insurance rates, the report said.

"The cost of inaction in planning for future earthquakes and other natural disasters can be very high, as demonstrated by several recent damaging events across the globe," Mark Petersen, chief of the USGS National Seismic Hazard Mapping Project, said in a statement.

The Western United States faces a high risk of damaging earthquakes up and down the coast and in the intermountain region, the report said. The California cities of San Jose, Vallejo and San Diego  all saw a heightened threat, as new fault lines have been recently discovered, the report said.

The cities of Irvine, Santa Barbara and Oakland had their threats downgraded however, the report said.

It also upgraded the risks facing parts of the central and eastern United States, singling out areas near New Madrid, Missouri, and Charleston, South Carolina. Scientists did however lower the threat facing New York City's skyscrapers, as slow-shaking quakes which impact taller buildings are less likely in the area than previously thought.

The 16 states with areas facing the highest risk are Alaska, Arkansas,California, Hawaii, Idaho, Illinois, Kentucky, Missouri, Montana, Nevada,Oregon, South Carolina, Tennessee, Utah, Washington, and Wyoming.

The survey noted a sharp spike in the number of earthquakes over magnitude 3, potentially driven by hydraulic fracturing in states likeTexas, Oklahoma and Arkansas. Between 2010 and 2012 more than 300 quakes were recorded, compared to an average of just 21 per year over recent decades in the region.

While those quakes were not included in the analysis of earthquake risk, researchers said that planners should consider higher potential for shaking given the increased seismic activity.

The maps are based on over a century of observed earthquake data. The last assessments were published in 2008 and were updated to account for new scientific modeling and studies on quakes, the report said.

(Reporting by Curtis Skinner in New York; Editing by Eric Beech)

Maritime Reporter October 2015 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds


Traders Eye Floating Diesel Storage in Atlantic

Europe diesel stocks reach fresh record high; huge imports from Asia, Middle East weigh on supplies. Oil traders are preparing to store diesel in giant tankers

Shell Want Shipper Guarantees on Nigerian Crude Exports

Royal Dutch Shell has asked ship owners exporting its Nigerian oil to sign a "letter of comfort" (LoC) to guarantee it is not stolen, according to an email from the company seen by Reuters.

ICCOPR Approves Updated Oil Pollution Research Plan

The Interagency Coordinating Committee on Oil Pollution Research (ICCOPR) unanimously approved the Oil Pollution Research & Technology Plan (OPRTP) for FY2015-2021

Maritime Security Maritime Standards Navigation Offshore Oil Pipelines Pod Propulsion Port Authority Salvage Ship Electronics Ship Repair
rss | archive | history | articles | privacy | contributors | top maritime news | about us | copyright | maritime magazines
maritime security news | shipbuilding news | maritime industry | shipping news | maritime reporting | workboats news | ship design | maritime business

Time taken: 0.1813 sec (6 req/sec)