Monday , January 30 2023

Volcanoes and glaciers are combined as powerful methane producers


A large amount of greenhouse gas emissions from Icelandic Glaciers were discovered by scientists.

The study of the glaciers, which flows through the ice-covered Katla volcano, indicates that in the summer months, about 41 tons of methane are produced by dissolving daily water. It's about a methane equivalent of about 136,000 cows.

A study conducted at Lancaster University Scientific reports, which is the first publication on methane glacial release on glaciers.

"This is a huge amount of methane that goes into the atmosphere from ice water," says Dr. Vincent, a veterinarian biogeochemical physician at the Center for Lancaster Center and a co-author of the study. "The disappearance of methane from the non-oceanic rivers listed in the scientific literature to the atmosphere significantly exceeds. It contraverses many wetlands in the world that produce methane; Together with other volcanoes in Europe, more than twenty methane emissions. «

Dr Vinn: "Methane has a global warming potential of 28 times carbon dioxide (CO2). That's why it is important to know that different sources of methane emitted into the atmosphere and how it can change in the future.

"Many assumptions have been made about whether glaciers can free the methane. Gluten beds are suitable for methane production, containing microbes, low oxygen, organic matter and water component – an ice cover in the surface of the surface above the methane.

"However, nobody has carefully studied this before, the strongest evidence that the glaciers were free of methane".

The study is based on PhD studies when Dr. Rebecca Burns is a research fellow at the University of Lancaster, a global fund for eco-innovation funded by the European Regional Development Fund.

Dr Burns is surrounded by methane in the surrounding landscape to measure the methane concentration by comparing the methane to the nearest sediments and other rivers in the glaciers of the glacial lake.

"The highest concentrations were found when the river came under the glacier and entered the lake. This shows that the methane should be taken under the glacier, "explains Dr. Vin.

By using a mass spectrometer that detects the unique "fingerprint" of methane, researchers found methane in microbial activity in the glacial bed. But there is still a connection with the volcano.

"We hope that volcanoes will not produce methane, but will provide conditions that allow metabolism to grow in microbes in the surrounding drinking water" Winnie.

Usually when it is in contact with methane oxygen, it combines to form CO 2, so the methane is efficiently removed. In the glaciers, the dissolved oxygen-rich ice mass layer is reached and converted to any methane carbon dioxide.

"Understanding the seasonal evolution of Solgaykkobl's sublingual drainage system and interacting with the Kathleen geothermal zone have been part of this work," said Fiona Tweed, an expert on glacial hydrology at the University of Staffordshire, and co-author of the study.

When the meltwater melts in the glacier in Solhamaymaul, it is associated with the gases from the Katla volcano. These gases reduce the oxygen content of water, which means that some of the microbes may be transported from the ice without dissolving into CO2 by dissolving the methane water.

Heller Tufen, a volcanologist at Lancaster University and researcher of the researcher, said: "The heat from the Katla volcano can dramatically increase microbial methane generation, so you can see Katla as a microbial incubator.

"Scientists have recently discovered that Katla extracts a large amount of carbon dioxide – it's the fifth largest global CO2 emission of volcanoes, so Katla is a very fun, interesting volcano."

"Iceland and Antarctica use many ice, active volcanoes and geothermal systems," he said. Burns. "The latest report of the International Climate Change Climate (IPCC) reflects the current trends of global warming in 2030-2052. It shows that the highest sensitivity of climatic sensitivity is 1.5 degrees Celsius. If the methane is removed under the ice caps, there is an opportunity to see the short-term growth of methane released from the ice mass if it has the means to escape. "

Professor Andrew Stephenson, Professor of Hydrothermal Geochemistry at the University of Iceland, said: "These studies provide important and up-to-date information on the origin and flow of methane on Earth and the importance of this greenhouse gas. Atmosphere from such systems.

However, researchers believe that these effects are still unclear. Glaciers believe that although the short-term growth of methane released in dissolution and swallowing may be limiting themselves to self-restraint without any conditions for methane extraction in the long-term process.

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