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A research team at Rinne University in Sweden reported that it was possible to confirm ocean warming that increases seawater temperature due to methane gas generated from methane hydrate deposited on the seabed. The research team argues that methane gas, known as a greenhouse gas, is released from the ocean in large quantities, leading to ocean warming, leading to long-term climate change.
Methane hydrate is a substance formed by water and methane under low temperature and high pressure conditions and is also called burning ice. Methane, a methane hydrate material, is a gas that has a greenhouse effect 25 times more than carbon dioxide, and when methane hydrate is decomposed from the sea floor and methane gas is released, it is pointed out that it may promote ocean warming.
The research team revealed that methane hydrate decomposition and methane gas emission are long-term processes that have continued over the centuries and have a significant impact on climate change, as well as the potential to lead to changes in the marine environment such as seawater acidification. It is also estimated that methane hydrate contains more hydrocarbons in the form of methane than all fossil fuels combined. It is pointed out that methane gas is released into the sea due to ocean warming caused by the release of methane gas, and this methane gas is a cause of the vicious cycle of ocean warming.
The research team believes that methane gas released from methane hydrate is one of the causes of past climate change that has occurred in the long Earth’s history. Since 2011, using a device that collects methane hydrate in collaboration with researchers in Brazil and France, and a remote controlled submarine I have been exploring and researching.
And it is said that this flow could be modeled after the decomposition of methane hydrate and the confirmation of mass generation of methane gas. The research team revealed that ocean warming caused by the decomposition of methane hydrate and the mass release of methane gas can be said to be a phenomenon occurring all over the world.
Based on the data and results obtained so far, the research team also tries to determine how much methane is present in the study area and whether gas hydrates are likely to be decomposed and released into seawater in the future. Since methane is contained in sediments under the sea as well as methane hydrate, the research team is also conducting research and exploration of the Baltic Sea, which is shallower than the South Atlantic Ocean. Related information can be found here .
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