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The Arctic groundwater supplies more carbon to the sea than previously known.

An aerial image of the research site in Kakutobik Lagoon in North Alaska. Credit: Nathansongdaman

A new study at Austin School at Texas University allows relatively small amount of groundwater to release a large amount of carbon through the Alaska tundra and contribute to climate change.

Researchers consist of only a small part of the water that is excreted in the sea, but in the summer, the viewfort Sea is relieved of the estimated 230 tons of organic carbon per day along the coastline of almost 2,000 kilometers. I learned to be there. This amount of carbon is equivalent to a river that flows freely in the local community in the summer of several months.

“This study shows a huge amount of organic carbon and carbon dioxide released via fresh groundwater mediatives in summer,” he acquired a Ph.D. at the UT Jackson Global Science School. CANSU DEMIR, who led the research while he was, said. She is currently a postdoc researcher at the Rostra Moss National Institute.

This study is published in Global Physical Research.

If the tundra continues to thaw and the flow of submarine -rhinometer chets continues, Demir stated that due to the outflow of carbon from the coast to the sea, the sea surface could be effectively a carbon source to the atmosphere. CO2 released through groundwater may also contribute to marine acidization.

The Arctic groundwater supplies more carbon to the sea than previously known.

Install the piezometer along the Micaela Pedrazas (left) and CANSU DEMIR (right) Kaktovik Lagoon’s beach. Credit: Bayani Cardenas / Jackson School of Geosciences

This study is the first to use direct observation to show that freshwater is released in the seabed environment where the coast meets the sea. Before the study, Demir said that the presence of fresh submarine -drained water emissions in the Arctic region was very limited.

This study is the first freshwater that isolated freshwater, such as rainwater, snow melting, shallow ice ice, and several potential thawing of permanent frozen soil. Preparation of groundwater secretion in art contains a recycling salt that has penetrated from the coast to the ground.

Using direct observations, numerical modeling, heat and hydraulic technology, researchers have a fresh groundwater in the Viewfort Sea in the northern Alaska during the summer, 3rd to the three major rivers in the region. I found something equal to 7 %. According to Demir, this amount of water is surprisingly high. He stated that it was comparable to fresh groundwater emissions in the low latitude temperature zone. The volume of the groundwater is small in proportion to the entire river flow, but holds the same amount of carbon.

“In a small amount of water, the groundwater carries almost the same amount of organic carbon and nitrogen as the river,” she said.

The Arctic groundwater supplies more carbon to the sea than previously known.

Emily Bristol samples groundwater via the Simpson Lagoon piezometer. Credit: Tyson Mackeyney /Jackson Global School

The groundwater moves under the soil or sediment when heading to the coast, and picks up organic matter, inorganic substances, and nutrients on the journey. Interaction with permanent frozen soil can receive a large amount of carbon. The permanent frozen soil resembles the basement estuary, holding a large amount of water and organic matter. When the ice melts and becomes part of the flow of the groundwater, it can also bring a huge amount of carbon.

“The Arctic coast is changing in front of you,” said Bayani Cardenas, a co -author of the study and a professor of the Jackson School’s Earth and the Faculty of Planetist Sciences. “When the permanent frozen earth is thawed, it turns into a coastal and submarine’s obi water layer. Even without this thawing, our research is one of the first research that directly indicates the existence of such a band. “

In addition to contributing to the global climate change, the heavy inflow of carbon and nitrogen could have a significant impact on the Arctic coastal ecology. For example, the acidification of the ocean can lead to an increase in vulnerabilities in some organisms living on the sea floor, such as crustaceans, clams, and snails.

As the permanent frozen soil continues to melt under climate change, the amount of freshwater is potentially increasing in the underground of the sea, and more greenhouse gases are sent to the coastal waters.

Details: CANSU DEMIR ET AL, the Arctic Ol anarctic spinal cord water layer and its important groundwater, carbon flux, and global research books (2024). Doi: 10.1029/2024GL109142

Provided by Texas University Austin School

Quotation: The Arctic Current groundwater is more carbon from salt salt chlorine from western ground on January 30, 2025 (January 30, 2025). Is supplied to the ocean (January 30, 2025) forter.html

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