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California levees face risk of catastrophic failure as a result of historic drought
Earthen levees protect dry land from floods and function as water storage and management systems. Over 21,000 kilometers of earthen levees deliver approximately two-thirds of potable water to more than twenty-three million Californians and protect more than $47 billion worth of homes and businesses from flooding. Scientists say that the ongoing extreme drought in the state poses a risk of catastrophic failure to California’s levee systems and highlights an urgent need to invest in research regarding the vulnerabilities of these systems under extreme climatic events.
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Climate change and Hurricane Katrina: what have we learned?
Theory and computer models show that the incidence of the strongest hurricanes — those that come closest to achieving their potential intensity — will increase as the climate warms, and there is some indication that this is happening. Global warming, however, is occurring far too fast for effective human adaptation. Adapting to the myriad changes expected over the next 100 years is such a daunting prospect that otherwise intelligent people rebel against the idea even to the extent of denying the very existence of the risk. This recalcitrance, coupled with rising sea levels, subsiding land, and increased incidence of strong hurricanes, all but guarantees that New Orleans will have moved or have been abandoned by the next century.
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Drought causing California’s San Joaquin Valley land to sink, damaging infrastructure
Californians continue pumping groundwater in response to the historic drought, and as a result, land in the San Joaquin Valley is sinking faster than ever before, nearly two inches per month in some locations. Sinking land, known as subsidence, has been occurring for decades in California because of excessive groundwater pumping during drought conditions, but the sinking is happening faster. The increased subsidence rates can damage local, state, and federal infrastructure, including aqueducts, bridges, roads, and flood control structures. Long-term subsidence has already destroyed thousands of public and private groundwater well casings in the San Joaquin Valley. Over time, subsidence can permanently reduce the underground aquifer’s water storage capacity.
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New facility will be center of research to make U.S. grid more robust, smarter
The U.S. electric power grid is the most complex machine ever built. Transforming it from an early twentieth century machine to a twenty-first century engine for innovation is a demanding scientific and technical challenge. The Pacific Northwest National Laboratory has launched its new Systems Engineering Building (SEB), in which industry, academia, and leading scientists will conduct research which will change the future of the U.S. power grid. “The private sector and the government must work together to ensure that we can prevent and recover from grid disruptions, whether they come from cyberattack, physical attack, or severe weather that is brought on by climate change,” Deputy Energy Secretary Elizabeth Sherwood-Randall said at the building’s dedication.
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U.S. coastal flood risk on the rise ten years after Hurricane Katrina
A decade after Hurricane Katrina caused $41 billion in property and casualty insurance losses, the most expensive catastrophe ever experienced by the global insurance industry, rising sea levels are driving up expected economic and insurance losses from hurricane-driven storm surge in coastal cities across the United States. Rising sea levels contributing to increased risk of severe economic damage from flood following a hurricane – and Miami, New York, and Tampa now face greater risk than New Orleans.
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World’s most at-risk coastal regions should adopt Louisiana’s post-Katrina protection plans
A decade after Hurricane Katrina hammered America’s Gulf Coast, measures are being taken there to protect against similar devastation from natural disasters — as well as against long-term, gradual impacts resulting from climate change. Other coastal regions across the world, however, remain vulnerable to damaging storms, and providing similar protection for the tens of millions of people living in those areas — around 38 percent of the global population, or 2.5 billion people, lives within 100 kilometers (62 miles) of the coast — will require international action. Experts say that the world’s most at-risk nations should implement coastal protection plans like those adopted by Louisiana.
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New tools increase Palestinians’ capacity to face earthquakes
A massive earthquake would lead to the devastation of 70 percent of houses in the Palestinian territories, and the death of 16 000 people. As the Palestinian territories are located in the Rift Valley — right at the frontier between the Arabian and African plates which are moving farther apart — the likelihood of earthquakes is expected to keep increasing. Two projects aim to make the next generation of citizens and researchers better equipped to face this growing threat.
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New technology solves city pipelines leakage problem without excavation
In Mexico City there are twenty-six thousand kilometers of water pipes and drainage, of which about 8,000 are useless, with risk of collapse and resulting cuts in service. The water pipes infrastructure of many other cities is not much better. A Mexican start-up has created a technology to renew piping without the need for excavation, ensuring it lasts fifty years, twice as long as traditional piping.
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Inspired by bats, sensor technology detects dangerous structural cracks
Researchers have developed an ultrasound sensor for detecting dangerous cracks in structures such as aircraft engines, oil, and gas pipelines, and nuclear plants. The device, known as a transducer, identifies structural defects with varying ultrasonic frequencies and overcomes the limits of other, similar devices, which are based on rigid structures and have narrow ranges. It is thought to be the first device of its kind in the world.
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Geoengineering technique would not stop sea level rise
Researchers used computer model experiments to test how the Greenland Ice Sheet would react to albedo modification, also called solar radiation management geoengineering, a proposed technology to cool down the Earth’s temperature by reflecting some sunlight away from the planet. They found the ice sheet might contribute to sea-level rise for decades to centuries after albedo modification began. The researchers say that albedo modification should not be counted on as a short-term solution to stop rising global sea levels.
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Three new Engineering Research Centers to advance U.S. resiliency, sustainability
The NSF awards $55.5 million for compact mobile power, off-grid water treatment, and nature-inspired soil engineering. The NSF says that innovations that improve the affordability, availability, quality, and resilience of infrastructure services will enhance the nation’s economic competitiveness and societal well-being.
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Tackling urban water crises
With drought conditions putting a strain on resources throughout South Florida, FIU researchers are investigating long-term solutions to water crises as part of a newly launched consortium. The Urban Water Innovation Network (UWIN) comprises fourteen academic institutions and key partners across the United States. The UWIN researchers hope to create technological, institutional, and management solutions that will help communities increase the resilience of their water systems and enhance preparedness for responding to water crises.
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Building resilient urban infrastructure to cope with climate challenges
In addition to urban flooding, global climate change is predicted to bring increased coastal flooding, like that associated with Hurricane Katrina and Superstorm Sandy, as well as extreme heat. As extreme weather events like these occur more frequently, global climate change may demand that we recalibrate our definition of “rare.” Historically, infrastructure to mitigate flooding and extreme heat has been designed to be fail-safe, meaning that it is designed to be fail-proof. But recently we have seen that fail-safe can be a dangerous illusion. Fifty researchers from different disciplines from fifteen institutions have teamed up to explore these challenges and to change the way we think about urban infrastructure.
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$4 million awarded to support earthquake early warning system in Pacific Northwest
The U.S. Geological Survey (USGS) last week has awarded approximately $4 million to four universities — California Institute of Technology, University of California, Berkeley, University of Washington, and University of Oregon — to support transitioning the ShakeAlert earthquake early warning (EEW) system toward a production stage. A functioning early warning system can give people a precious few seconds to stop what they are doing and take precautions before the severe shaking waves from an earthquake arrive.
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Confronting weather extremes by making infrastructure more resilient
South Florida’s predisposition to weather extremes renders the region’s infrastructure acutely vulnerable. But weather extremes are not exclusive to South Florida. The Urban Resilience to Extreme Weather-Related Events Sustainability Research Network (UREx SRN), a newly formed team of researchers, is addressing these challenges on an international scale.
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