Sentences with phrase «gas hydrates on»

Knowledge of the timescales of gas hydrate dissociation and subsequent methane release are critical in understanding the impact of marine gas hydrates on the ocean — atmosphere system, says Shyam Chand, researcher at NGU / CAGE.

One cubic meter of gas hydrate on the ocean floor contains 165 cubic meters of gas at room temperature and pressure.

Not exact matches

His research focus is on unconventional fuels, primarily shale gas and tight oil, but also coalbed methane and other unconventional sources, including oil sands, coal gasification and gas hydrates.

Thomsen and his colleagues have discovered that changes in ocean currents triggered by storms raging on the sea surface can alter the release of gas from the hydrate mounds.

«If the decomposition of the methane hydrate phase is fast enough, which depends on temperature, the methane gas in the aqueous phase forms nanobubbles,» said Saman Alavi, one of the lead researchers on the project.

• The U.S. and India will increase cooperation on unconventional natural gas including on coal bed methane, natural gas hydrates, and shale gas.

«You build up too much free gas, and then you have an overpressured column,» says Gerald Dickens, a marine geochemist at Rice University who went to Hydrate Ridge on a drill ship in 2002.

For example, data from this study has been used to examine the evolution of gas hydrate stability within the Eurasian Arctic over glacial timescales, exploring the development of massive mounds and methane blow - out craters that have been recently discovered on the Arctic seafloor.

This year's spending plan is focused on carbon capture and storage technologies and gas hydrate research.

Based on pressure and temperature modelling, we show that the last deglaciation could have triggered dissociation of gas hydrates present in the region of the northern part of the Norwegian Channel, causing degassing of 0.26 MtCH4 / km2 at the seafloor.

In the greater NZ region, we have undersea hot springs (hydrothermal vents of the Kermadecs), marine hydrocarbon seeps and gas hydrates (offshore eastern North Island — possible analogues for oceans on Icy Worlds), and terrestrial (on land) hot springs in the Taupo Volcanic Zone and elsewhere around the country.

The most likely explanation is the mass release of methane from sediments on the sea floor, where the gas was sequestered, as it is now, in a solid form as methane hydrate.

The alternative pathway, which the world seems to be on now, is continued extraction of all fossil fuels, including development of unconventional fossil fuels such as tar sands, tar shale, hydrofracking to extract oil and gas, and exploitation of methane hydrates.

An increased concentration of methane release, Gustafsson suspects, may be coming from collapsing «methane hydrates» — pockets of the gas that were once trapped in frozen water on the ocean floor.

In most places on continental slopes, gas hydrate does not exist in the upper 10 + meters of sediment (which is another reason for why David is very likely correct in stating that the process of thermal dissociation is slow — heat has to propagate into the sediment).

There are a number of factors that control CH4 concentrations that are extermely poorly understood and are mostly ignored in the scenarios — the dependence on other gases (such as O3, and CO), the impact of increased temperatures and changes to precip on tropical and boreal wetland emissions, the existence (or not) of a significant methane hydrate source from permafrost or continental shelves, the climate impact on the atmopsheric chemistry of CH4.

Consider just how much commercial cred fracked gas & oil had 10 yrs ago, and then look at the current worldwide research efforts both on methane hydrates» extraction and also on coal - seam gasification.

34, L01603, doi: 10.1029 / 2006GL027977, 2007 Origin of pingo - like features on the Beaufort Sea shelf and their possible relationship to decomposing methane gas hydrates

That Shakhova 2010 paper opens with: «The sharp growth in methane emission (50 Gt over 1 - 5 years) from destructed gas hydrate deposits on the ESS should result in an increase in the global surface temperature by 3.3 C by the end of the current century instead of the expected 2C.»

A search for gas venting on the Arctic seafloor focused on pingo - like - features (PLFs) on the Beaufort Sea Shelf because they may be a direct consequence of gas hydrate decomposition at depth.

«This yields an estimated ∼ 1,600 Pg C within gas hydrates associated with subsea permafrost on the Arctic Ocean continental shelves.»

Shakhova and Semiletov have identified CH4 sources on the East Siberian Arctic Shelf (ESAS) as comprising hydrates (1,000 Gtonnes), gas (700 Gtonnes) and permafrost (500 Gtonnes).

The 237 - page bill introduced by U.S. Sen. Lisa Murkowski (R - AK)-- S. 2012, the Energy Policy Modernization Act of 2015 — includes provisions that would expedite the liquefied natural gas (LNG) export permitting process, heap subsidies on coal technology, and fund research geared toward discovering a way to tap into methane hydrate reserves.

A team from the Key Laboratory of Renewable Energy and Gas Hydrate, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences reports on a pilot - scale biomass - gasification - reforming system with optimized catalyst to produce synthesis gas for liquid... Read morGas Hydrate, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences reports on a pilot - scale biomass - gasification - reforming system with optimized catalyst to produce synthesis gas for liquid... Read morgas for liquid... Read more →

The release of gas hydrates may still be stoppable through a suite of techniques including withdrawing atmospheric CO2 by rapidly building soil fertility on a global scale, reforestation to increase reflective cloud cover, and rapidly reducing CO2 emissions — in other words, a massive emergency campaign to cool the planet: Climate Code Red!

The focus will be set on interfacial attributes of gas hydrates, and the next - generation tools used to probe them.

Gordon Research Conference on Natural Gas Hydrate Systems will be held in Galveston, Texas from February 28 to March 4, 2016.

For example, data from this study has been used to examine the evolution of gas hydrate stability within the Eurasian Arctic over glacial timescales, exploring the development of massive mounds and methane blow - out craters that have been recently discovered on the Arctic seafloor.

Researchers from the Centre for Arctic Gas Hydrate, Environment and Climate (CAGE) at the Arctic University of Norway have discovered a growing Arctic abiotic methane - and methane hydrate — charged sediment drift on oceanic crust in the deep Fram Strait of the ArcticHydrate, Environment and Climate (CAGE) at the Arctic University of Norway have discovered a growing Arctic abiotic methane - and methane hydrate — charged sediment drift on oceanic crust in the deep Fram Strait of the Arctichydrate — charged sediment drift on oceanic crust in the deep Fram Strait of the Arctic Ocean.

It is quite possible, therefore, that some of the venting gas observed on the ESAS could be fossil methane, previously trapped beneath the permafrost as free gas or gas hydrates, finding its way to the surface through a cryosphere cap that has been degrading over the past 10,000 years.

When hydrates are present below permafrost, on land and beneath shallow marine shelves, they are also thermally buffered by the latent heat energy needed to melt the permafrost and it could take thousands of years to destabilize the gas hydrates (Taylor et al 2005).

Gas hydrates contain huge amount of methane gas, and it is destabilization of these that is believed to have caused the craters on the Yamal PeninsuGas hydrates contain huge amount of methane gas, and it is destabilization of these that is believed to have caused the craters on the Yamal Peninsugas, and it is destabilization of these that is believed to have caused the craters on the Yamal Peninsula.

The alternative pathway, which the world seems to be on now, is continued extraction of all fossil fuels, including development of unconventional fossil fuels such as tar sands, tar shale, hydrofracking to extract oil and gas, and exploitation of methane hydrates.

Methane release from stores of so - called gas hydrates, that can form on land or under the sea, is not new to researchers.

«The most likely process where this happens - and there is geological evidence that it has happened in the past - is when the methane gas hydrate layer in the sediment destabilises on a slope.

The research proposed by Oklahoma State will help to further develop an understanding of the structural and geologic controls on hydrate occurrence and distribution in Walker Ridge 313 and Green Canyon 955 using new techniques to interpret gas hydrate occurrences in existing seismic data, along with well data collected during prior Energy Department research efforts at those sites.

The selected projects build on the completion of a successful test earlier this year that was able to safely extract a steady flow of natural gas from methane hydrates on the North Slope of Alaska.

Researchers at Southern Methodist University will conduct numerical modeling, field data collection, and extensive laboratory analyses to characterize the state of the upper boundary of pressures and temperatures where gas hydrates are in a stable form on the Alaskan Beaufort continental slope.

U.S. scientists working on a research vessel in the Gulf of Mexico have made the most promising discovery so far of marine gas hydrate, a possible new energy source.

These new projects, managed by the Energy Department's National Energy Technology Laboratory, will focus research on field programs for deepwater hydrate characterization, the response of methane hydrate systems to changing climates, and advances in the understanding of gas - hydrate - bearing deposits.

[2] The worldwide amounts of methane bound in gas hydrates is conservatively estimated to total twice the amount of carbon to be found in all known fossil fuels on Earth.

Extreme environmentalists have declared war on methane, so they will be attacking any development of natural gas from methane hydrates.

Tim Collett, USGS senior scientist, said: «The discovery of what we believe to be several of the largest and most concentrated gas hydrate accumulations yet found in the world will yield the geologic and engineering data needed to better understand the geologic controls on the occurrence of gas hydrate in nature and to assess the technologies needed to safely produce gas hydrates.»

On March 12, 2013, JOGMEC researchers announced that they had successfully extracted natural gas from frozen methane hydrate.

«The Energy Policy Act of 2005 similarly speaks directly to the production of fossil fuels... («The purpose of this section is to promote natural gas production from the natural gas hydrate resources on the outer Continental Shelf and Federal lands in Alaska»); id.

Frozen Heat: UNEP Global Outlook on Methane Gas Hydrates.

Methane hydrates are believed to form by migration of gas from deep along geological faults, followed by precipitation or crystallization, on contact of the rising gas stream with cold sea water.

An increased concentration of methane release, Gustafsson suspects, may be coming from collapsing «methane hydrates» - pockets of the gas that were once trapped in frozen water on the ocean floor.

On catastrophic methane degassing: Shakova and Semiletov have proposed a mechanism — the destabilisation of the permafrost cap overlying large methane hydrate deposits that contain a high proportion of free gas.

MacDonald, I.R., L.C. Bender, M. Vardaro, B. Bernard, and J.M. Brooks, Thermal and visual time - series at a seafloor gas hydrate deposit on the Gulf of Mexico slope, Earth and Planetary Science Letters, 233 (1 - 2), 45 - 59, 2005.