All articles tagged with #nature geoscience
Scientists have identified the mechanism behind the Arsia Mons Elongated Cloud, a recurring water ice formation on Mars that defied previous models. The cloud forms via 'homogeneous nucleation,' a process where water vapor freezes directly into ice without needing dust particles, a phenomenon previously thought impossible in planetary atmospheres.
A recurring 1,800 km-long water ice cloud on Mars, known as the Arsia Mons Elongated Cloud (AMEC), forms daily via 'homogeneous nucleation,' a process previously only theoretical. Published in Nature Geoscience on Oct. 7, the study shows this exotic physics explains the cloud's rapid formation and evaporation, challenging standard models of cloud formation in planetary atmospheres.
A new study in Nature Geoscience confirms that Antarctica is committed to net ice loss this century, even if global warming is limited to 1.5 degrees Celsius. While extra snowfall cannot offset melting, high emissions could trigger a domino effect adding up to 25.4 cm to sea levels by 2100, threatening coastal communities.
Antarctica’s winter sea ice reached its third-lowest recorded maximum on September 14, 2026, falling nearly 1 million square kilometers below the long-term average. This marks the fourth consecutive year of record-low winter peaks, signaling a systemic shift rather than a temporary anomaly. Simultaneously, a new study in Nature Geoscience confirms that the Antarctic Ice Sheet is committed to mass loss this century, even under aggressive emissions cuts. While sea ice loss does not directly raise sea levels, it weakens ice shelves, potentially accelerating glacier flow and contributing up to 25.4 cm of sea-level rise by 2100 under high-emission scenarios.
A study published in Nature Geoscience identifies two previously unknown iron oxyhydroxides that could store vast amounts of water in Earth's lower mantle. These minerals, formed under extreme pressure and heat, may preserve primordial water near the core-mantle boundary, offering new insights into the planet's water cycle and interior structure.
Researchers studying a red, iron-rich brine pool beneath the McMurdo Dry Valleys found environmental DNA from marine microbes, suggesting the pool originated from seawater trapped under ice long ago and offering a rare glimpse into an ancient Antarctic ocean and how salty brines can preserve biological records.
Researchers have identified a giant, fan-shaped subglacial basin province beneath East Antarctica, formed by distributed rotational extension that connects major basins such as Wilkes, Aurora, and the Lake Vostok region; this may reflect Gondwana breakup and indicates East Antarctica has a more dynamic tectonic history than previously thought, with possible implications for how the ice sheet responds to climate change.
Scientists confirm the Tamu Massif in the Pacific’s Shatsky Rise is the largest single volcano on Earth, a flat, shield‑shaped structure formed about 145 million years ago and spanning roughly 120,000 square miles, with its summit about 6,500 feet below the ocean surface and its base near four miles deep. Previously treated as separate mounds, it is now seen as one continuous volcanic system revealed by seismic-reflection data, reshaping how we understand oceanic plateaus.