Sea Levels in North Carolina—and Elsewhere—Rising Fast
This week we learned that bad planning in the face of climate change isn't a particularly new phenomenon: the Vikings did it too . The collapse of the Norse settlements in West Greenland was caused, in part, by the Vikings' poor adaptation to cooler conditions and extensive sea ice over 1,000 years ago, which severely affected Norse livestock and crops.
A millennium later, it looks like North Carolina will suffer the consequences of climate change as well if we don't adjust our lifestyles. Scientists have found evidence that over the past century, the Tar Heel state has suffered the steepest climate-associated sea level rise of the past 2,000 years. The coastal erosion that accompanies these rising sea levels, left unchecked by poor management, will bring significant losses to North Carolina – but this time it is property values, quality of life, and tourism that will be affected, and by climate change-induced temperature shifts in the other direction.
century, compared to a rate of only 0.6 millimeters per year around the Middle Ages. Sea level was stable from B.C. 100 to A.D. 950, according to the scientists.
“This historical rate of rise was greater than any other persistent, century-scale trend during the past 2100 years,” the researchers wrote in the study , published in the Proceedings of the National Academy of Sciences .
The team analyzed sea level changes of the past two millennia using data extrapolated from salt-marsh sediments and foraminifera – single-celled protists present all over the ocean – and reconstructed global mean temperature using proxy data from natural climate archives. Combining the two data sets, Kemp and his team found the sea level changes consistent with the global temperature changes of the past 1,000 years.
“This research…suggests that modern warming is unprecedented in the past two millennia,” they wrote.
But why should we care about a barely perceptible increase – about the thickness of a nickel – in sea level each year? Because in North Carolina, a nickel-thick water rise could eventually mean billions of dollars in economic loss. A 2007 report by leading North Carolina researchers projected that billions of dollars in property value and coastal recreation will go down the drain by 2080 because of rising sea levels and the accompanying coastal erosion. The swelling oceans also magnify the state's vulnerability to severe storms, which spells bad news for North Carolina's agriculture, tourism, and other business sectors. And in case you're wondering why the losses are so severe, here is your answer: the state has been identified by the National Oceanic and Atmospheric Administration as one of the most vulnerable regions to sea level rise in the U.S.: it has the largest estuarine system on the U.S. Atlantic coast and is home to over 2,000 square miles of coastal and urban land below one-meter elevation.
Water Level Meter - News
But why should we care about a barely perceptible increase – about the thickness of a nickel – in sea level each year? Because in North Carolina, a nickel-thick water rise could eventually mean billions of dollars in economic loss.
Mohamed El-Ashry, a senior fellow at the UN Foundation and a former chairman of the Global Environment Facility (GEF), said the threat of sea level rise in particular made an impression on governments in the region. A 2009 study produced by the Arab
The water level in Subarnarekha, which was flowing above the red mark on Sunday, has receded. It was at 10.21 meter mark against the danger mark of 10.36 meter. Water level in Jalaka was 5.59 meter, 0.9 meter above the red mark and in Budhabalanga it
The dam's water level is currently less than a meter away from overflowing, because excess water from Ipo Dam in Bulacan was dumped at La Mesa Dam after non-stop rains in Bulacan last Sunday. Aside from Fairview, areas in Navotas and Malabon also get
According to Aqua, there are three important parts to being water smart: Inside your home, outside your home and detecting leaks. Only run full loads in both dishwashers and clothes washing machines. If this isn't possible, adjust water level or cycle.
NEI Nuclear Notes: Tuesday Update
From NEI’s Japan Earthquake launch page :
Fukushima Daiichi Water Filtration System Testing Continues
Plant Status
Tokyo Electric Power Co. is working to restart full-scale tests of the water filtration system it will use to decontaminate and recycle radioactive water that has flooded the basements of buildings at the Fukushima Daiichi nuclear energy facility. The system went into full operation on Friday but was shut down after five hours when radiation levels rose more quickly than anticipated in the part of the system that removes oil and sludge. TEPCO may add more equipment to remove oil or lower the water flow rate through the system. Cooling water injections into reactors 1, 2 and 3 are accumulating in the building basements at the rate of 500 tons per day, and could overflow in about a week if the decontamination system is not functional by then. TEPCO was able to open an entrance to the damaged reactor 2 building to lower high humidity levels without causing an increase in overall radiation levels at the site. The company has been filtering radioactive materials from the air inside the reactor building prior to opening the entrance. The move to lower humidity in the reactor building from near 100 percent levels will allow workers to enter the building to begin repair tasks, including calibrating a reactor water level gauge and ultimately restoring recirculating coolant. TEPCO has begun refilling an equipment storage pool on the top floor of reactor 4 after discovering that the water level in that pool had dropped to a third of its capacity, exposing activated metal equipment and causing higher levels of radiation inside the building. Submerging the equipment again should lower worker exposure to radiation, the company said. Industry/Regulatory/Political Issues Mike Weightman, who led an International Atomic Energy Agency team to Japan March 24-June 1, leads a review of the agency's preliminary assessment of the accident at Fukushima Daiichi at the IAEA's Ministerial Conference on Nuclear Safety that began in Vienna today and continues throughout the week. Weightman is chief nuclear inspector and head of the United Kingdom's Health and Safety Executive's Nuclear Directorate. Also speaking are IAEA Director General Yukiya Amano; NRC Chairman Gregory Jaczko; and Banri Kaieda, Japan's minister for economy and industry.Water Level Meter - Bookshelf
Construction of a water level meter
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The constant level meter is, as its name implies, an instrument in which the level of the water is maintained at the same invariable height by an automatic ...The Electrical review
Mr. WH Wake- man, writing in Machinery, properly condemns the practice as less reliable than even a water meter, which is bad enough. ...Technologic papers of the Bureau of Standards
Hence, it is important that the water level be accurately reproducible. This is secured by mounting the meter on leveling screws, providing it with a ...Reports of the United States Commissioners to the Paris Universal Exposition, 1867
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