Scientists have been monitoring several geological and environmental developments in the Arctic, from potential underwater volcanic activity to shifting permafrost and changing ice conditions. Researchers are also studying the region’s mineral resources and the infrastructure challenges involved in accessing them.
Possible underwater volcanic activity near Bennett Island in the East Siberian Sea has drawn attention. Satellite images have shown plume-like emissions over the ocean, which some scientists believe could indicate volcanic release of heat and material. Seabed changes in a nearby bay, where the seafloor shifted by roughly 3 to 40 feet over nine years, suggest ongoing movement below the surface. The area has a history of volcanic formation, and expedition teams have reported unusual sea conditions and localized warming.
A magnitude 8.8 earthquake near the Kuril Islands in July 2025 generated a tsunami that affected parts of Paramushir Island. Warnings were issued across the Pacific, leading to evacuation notices for more than two million people in multiple countries.
Experts say the Arctic is warming faster than the global average, but regular scientific expeditions remain limited. Researchers often rely on older data that may not reflect current conditions. A 2022 expedition to Bennett Island highlighted the practical difficulties of reaching and studying the region.
Canada’s Arctic has also become a focus of interest due to its mineral deposits. The region contains lithium, graphite, nickel, cobalt, copper, and rare earth elements, which are used in electric vehicles, electronics, and defense systems. China currently refines more than 90 percent of the world’s rare earths, prompting other countries to seek alternative supply chains.
In 2022, Canada introduced a critical mineral strategy with government funding and tax incentives to support mining and processing. The plan includes building roads, ports, and power infrastructure in remote areas. Companies are using artificial intelligence to reanalyze decades-old rock samples and identify potential deposits without new drilling.
Development in the Canadian Arctic faces significant obstacles. The region spans a large portion of the country, much of it permafrost or ice-covered terrain. Temperatures can drop to minus 40 degrees Fahrenheit, and infrastructure is limited. Mining operations are more expensive than in warmer climates. Much of the land is Indigenous territory, and projects require consultation and consent from First Nations, Inuit, and Métis communities. Indigenous-owned corporations are already involved in shaping development in some areas.
The United States has expressed support for a North American supply chain for critical minerals. If successful, the effort could reduce reliance on overseas processing and provide a more stable source of materials for manufacturers.
Arctic wildfires are another area of concern. Boreal forests in the region can burn during summer months, and some fires survive the winter by smoldering underground in peat layers. These holdover fires can reignite in spring, releasing carbon stored in trees and soil. Warmer and drier conditions in Canada are extending the fire season, and scientists are using satellite data and artificial intelligence to monitor fire risk.
Researchers in Canada are also testing a method to thicken Arctic sea ice. A UK-based startup called Real Ice has conducted trials near Cambridge Bay, pumping seawater onto the ice surface where it freezes as an extra layer. During a 2024 trial, the treated ice became roughly 20 inches thicker on average. The project plans to expand using underwater drones powered by clean energy, though the approach remains under study.
Some scientists have raised questions about the method, noting that sea ice formed from pumped seawater may contain more salt and could melt faster in summer. Others have pointed to potential effects on marine ecosystems. The cost of large-scale application has also been cited as a limiting factor.
Earlier proposals to preserve Arctic ice have included wind-powered pumps, reflective glass microspheres spread across ice surfaces, and cloud seeding. These approaches have faced practical and environmental challenges.
Permafrost thaw is affecting communities in the region. In Newtok, Alaska, riverbank erosion has been forcing residents to relocate to a nearby site called Mertarvik. The move, which began in 2019, has been gradual, and some services remain in the original village.
In Siberia, large craters have appeared in the Yamal Peninsula over the past decade. Researchers have attributed them to the buildup and release of methane gas in permafrost layers. The explosions occur when pressure from gas and super-salty unfrozen water, known as cryopegs, fractures the ground above. Scientists continue to study the conditions that lead to these events, which are considered specific to the Arctic region.
The Batagaika crater in Siberia, sometimes called the gateway to the underworld, is a large depression that formed after a slope collapse in the 1970s. As permafrost melts, the crater continues to expand, exposing layers of frozen soil that contain fossils and ancient sediment. In 2018, scientists recovered a 42,000-year-old foal preserved in the permafrost.
Greenland has also provided material for research. A 1993 ice sample, re-examined decades later, contained plant fossils and insect remains, indicating that parts of the island were once free of ice. Scientists say this suggests the Greenland ice sheet has melted before and could melt again under warming conditions.
In 2019, researchers discovered a giant virus in Greenland ice samples. The virus infects algae, and scientists are studying whether it could influence ice melt by darkening the surface.
Ocean researchers have also studied unusual sounds in polar waters. A low-frequency noise recorded in Antarctica in the 1960s, called “bio-duck,” was later identified as communication among minke whales. Similar sounds recorded near Australia and New Zealand were attributed to the same species.
In other ocean research, scientists interacting with a humpback whale near Alaska used recorded whale calls to initiate a brief exchange. The whale responded to repeated signals over a 20-minute period.
A phenomenon known as a brinicle occurs when cold, salty brine from sea ice descends through seawater, freezing the surrounding water and forming an icy tube. When a brinicle reaches the seafloor, it can freeze marine organisms such as starfish and sea urchins in place. Scientists are studying brinicles for their potential role in concentrating chemicals, which some researchers suggest could be relevant to the origins of life. Similar processes may occur on icy moons in the outer solar system.
The Mariana Trench, the deepest oceanic trench on Earth, has been the site of recorded whale calls. Researchers identified a sound known as “bio-twang” as coming from Bryde’s whales, using artificial intelligence to analyze hundreds of thousands of hours of audio.
At Point Nemo, a location in the South Pacific Ocean that is farther from land than any other point on Earth, a loud low-frequency sound recorded in 1997 was later determined to have come from an iceberg cracking. The site is used as a disposal zone for decommissioned satellites.
An unidentified sound called “upsweep,” recorded in the Pacific Ocean since 1991, remains unexplained. Its source has not been confirmed, though researchers continue to study it.
In Greenland, scientists have investigated a large depression beneath the Hiawatha Glacier. Radar surveys revealed a crater roughly 980 feet deep and nearly 20 miles wide. Analysis of quartz grains from beneath the glacier showed signs of high-pressure deformation, suggesting an impact event. However, dating placed the crater at about 58 million years old, which rules out a connection to a more recent cooling period known as the Younger Dryas. Shocked quartz deposits found in the eastern United States have led some researchers to propose an airburst event around 12,000 years ago, though this hypothesis remains unconfirmed.
Researchers have also studied moulins, vertical shafts in Greenland’s ice sheet that carry meltwater from the surface to the base. Teams descended roughly 330 feet into two moulins during expeditions in 2018 and 2019. The size of these channels may affect how quickly the ice sheet moves toward the sea, as water at the base can lubricate the ice.
