megaton

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megaton

1. one million tons
2. an explosive power, esp of a nuclear weapon, equal to the power of one million tons of TNT
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

megaton

[′meg·ə‚tən]
(physics)
The energy released by 1,000,000 metric tons of chemical high explosive calculated at a rate of 1000 calories per gram, or a total of 4.18 × 1015 joules; used principally in expressing the energy released by a nuclear bomb. Abbreviated MT.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Numbers for emission levels are in Megatonnes (Mt) of C[O.sub.2] equivalent (source: Environment Canada, 2002) C[O.sub.2] emissions Mt % World total (1999) 23900.00 100.00 Canada total (1990) 601.00 2.51 Canada total (2000) 726.00 3.04 Alberta 223.00 0.93 Ontario 207.00 0.87 Quebec 90.40 0.38 British Columbia 65.90 0.28 Saskatchewan 61.80 0.26 Nova Scotia 21.50 0.09 Manitoba 21.40 0.09 New Brunswick 20.20 0.08 Newfoundland 8.80 0.04 Prince Edward Island 2.10 0.01 North West Territories 1.80 0.01 Yukon 0.53 0.00 Table 2 Canadian greenhouse gas emissions.
(7) Since there are six greenhouse gases, their different contributions to global warming are converted to the common measurement unit of megatonnes C[O.sub.2] equivalent.
(Total oil and gas production across Canada accounts for even more--26 percent, according to Environment Canada--of total GHGs.) Environment Canada further estimates that, by 2030, the oil sands' share of the country's total GHG emissions will rise to 14 percent due to a projected increase of 124 percent, or 64 megatonnes, between 2010 and 2030.
On the positive side, the policies to eliminate coal, encourage conservation and rapidly expand the deployment of renewables has helped to significantly reduce GHG emissions from the electricity sector; these have declined from 35 mega-tonnes in 2005 to less than 7 megatonnes in 2014 (http://www.ontarioenergyreport.ca/pdfs/OntarioEnergyReportQ12015_Electricity_EN_Supply.pdf at p.
production methods and improved supply chain could save 89 megatonnes of CO 2
In 2014, organic waste (food mainly) decomposing in Canadian landfills emitted 29 megatonnes of greenhouse gases, 4% of the national total.
The explosive core of the warhead would be a massive thermonuclear bomb -- perhaps as big as 100 megatonnes, almost twice as big as any bomb ever tested.
The marketing firm asserts that the region could save up to five megatonnes of carbon dioxide emissions annually by implementing LED lighting systems.
"The product of food just skyrocketed in the country; in the last three years we've been able to produce 21 million megatonnes of additional food as a country," Adesina said.
"The production of food just skyrocketed in the country; in the last three years we've been able to produce 21 million megatonnes of additional food as a country," Adesina said.
The sum total of national carbon dioxide (CO2) emissions could total 29 megatonnes per year after 2030.