Tag

Ice Shelf

All articles tagged with #ice shelf

science2 days ago•1 min saved

Thwaites Ice Shelf on Verge of Breakup, Raising Sea-Level Alarm

A 45-kilometer ice shelf in front of Antarctica's Thwaites glacier is actively cracking and breaking away, a development scientists describe as a potential tipping point that could unleash a rapid collapse of part of West Antarctica and raise global sea levels by roughly 13 to 16 feet; researchers noted unusually warm, fast-moving waters beneath the ice and attempted to monitor the collapse, signaling heightened risk to coastal regions worldwide.

via Futurism|

#antarctica #climate-change #ice-shelf

science12 days ago•5 min saved

Hidden Channels Under Antarctic Ice Shelves Trap Warm Water, Accelerating Melt

A Nature Communications study shows long grooves beneath the Fimbulisen Ice Shelf trap warmer seawater, intensifying local melting and potentially weakening the ice shelf. Even modest inflows of warm water can dramatically increase melt where channels exist, a process not well captured by many climate models, suggesting East Antarctica may be more vulnerable than previously thought.

via The Daily Galaxy|

#antarctica #climate-models #ice-shelf

science1 month ago•33 min saved

Unmanned sub spots eerie Antarctic ice patterns, then goes dark

A University of Gothenburg unmanned submarine Ran captured images of unusual step-like and teardrop-shaped features beneath West Antarctica’s Dotson Ice Shelf in 2024; scientists say melting undercuts the ice shelf creates these patterns, not Atlantis, and warming ocean waters are driving ice loss and sea‑level rise. Ran II is being funded to continue exploring Antarctic underwater anomalies with Swedish researchers.

via Yahoo|

#antarctica #climate-change #dotson-shelf

science3 months ago•3 min saved

Deep Antarctic Drill Uncovers Ancient Open-Ocean Clues

Scientists drilled 523 meters through the Crary Ice Rise on the Ross Ice Shelf and recovered 228 meters of sediment, finding evidence that parts of West Antarctica were once open ocean as recently as about 23 million years ago. The findings help decode past ocean temperatures and environmental conditions to improve predictions of future ice loss and sea‑level rise; samples are being analyzed in New Zealand after transport from Antarctica.

via ScienceAlert|

#antarctica #ice-shelf #ocean-history

science3 months ago•6 min saved

Antarctic Submersible Vanishes After Revealing Hidden Ice Structures

A robotic submersible named Ran, part of an international effort to study West Antarctic ice shelves, disappeared under the Dotson Ice Shelf in January 2024 after completing a detailed ~140 sq km survey that uncovered previously undocumented subglacial features, including teardrop-shaped melt formations; no beacon or debris has been found, the incident halts follow-up data collection in the Amundsen Sea, and investigators are weighing equipment failure or collision as possible causes, while the 2022 dataset continues to inform revised models of basal melting driven by warm Circumpolar Deep Water.

via Indian Defence Review|

#antarctica #dotson #ice-shelf

science4 months ago•33 min saved

Antarctic Ice Shelf Teeters Toward Collapse, Hinting at Record Sea-Level Rise

A new study finds cracks in Antarctica’s Thwaites Eastern Ice Shelf have weakened its structure, with fracturing progressing in two phases over two decades. If the shelf collapses, global sea levels could rise by about 65 centimeters (roughly 2 feet) as the ice retreats at a rapid pace for decades. The Arctic is warming about three times faster than the global average, driving significant ice loss and shrinking sea ice, which NASA and other agencies have monitored for years. The report underscores the need for reducing pollution and changing human behavior to slow Arctic melt and mitigate future sea‑level rise.

via Yahoo|

#arctic-melt #ice-shelf #nasa

science4 months ago•4 min saved

Mysterious Disappearances and Discoveries Beneath Antarctic Ice

Scientists used autonomous underwater vehicles to map the underside of Antarctica's Dotson Ice Shelf, revealing complex terrain and uneven melting patterns driven by warm ocean currents. During a follow-up mission in 2024, the vehicle disappeared, raising concerns about the stability of ice shelves and their role in sea level rise, as melting accelerates in specific areas.

via The Daily Galaxy|

#antarctica #climate-change #ice-shelf

science5 months ago•4 min saved

Submarine Discovers Mysterious Structures in Antarctica, Signal Lost

An autonomous submarine exploring Antarctica's Dotson Ice Shelf discovered complex under-ice structures and warm water channels that influence melting patterns, but the mission ended with the submarine's disappearance, highlighting the challenges and importance of understanding ice-ocean interactions for predicting sea level rise.

via Earth.com|

#antarctica #climate-change #glacier-melting

science6 months ago•2 min saved

Rapid Antarctic Glacier Retreat and Unusual Florida Weather Impact Local Wildlife

A new study reveals that cracks and fractures in the Thwaites Eastern Ice Shelf, part of the rapidly changing 'Doomsday Glacier' in Antarctica, have been progressively weakening the ice shelf over two decades, leading to accelerated destabilization and potential implications for global sea-level rise.

via Phys.org|

#antarctica #climate-change #glacier-destabilization

science10 months ago•4 min saved

Critical Thwaites Glacier Fracture Threatens Global Sea Levels

Scientists are studying the rapidly breaking apart Thwaites Glacier in Antarctica, which could significantly raise global sea levels if it collapses. Using new satellite data analysis methods, researchers aim to better predict when and how these ice shelves will fracture, with the goal of understanding and potentially mitigating catastrophic sea level rise.

via Earth.com|

#antarctica #glacier #ice-shelf

science10 months ago•4 min saved

Seafloor Clues Disprove 750,000-Year Ice Age Myth

A new study challenges the long-held belief that the Arctic was covered by a massive, permanent ice shelf during ice ages, instead revealing evidence of seasonal sea ice and open water, which allowed marine life to persist and suggests a more dynamic Arctic history. This has implications for understanding past climate behavior and future Arctic changes.

via Indian Defence Review|

#arctic #climate-simulation #ice-shelf

science10 months ago•5 min saved

Ancient Mud Disproves 750,000-Year-Old Ice Theory

A new study challenges the long-held belief that a thick, permanent ice shelf once covered the Arctic, revealing instead that the region was characterized by seasonal sea ice over the past 750,000 years, allowing for open water and marine life even during cold periods, which has important implications for understanding past and future climate change.

via SciTechDaily|

#arctic #climate-change #ice-shelf

science11 months ago•4 min saved

Submersible Disappears After Revealing Secrets Beneath Antarctica's Ice

In 2022, a scientific mission using the autonomous underwater vehicle Ran explored beneath Antarctica's Dotson Ice Shelf, revealing new insights into glacier melting processes and ice structures, but the submersible disappeared during a subsequent deployment, leaving some mysteries unsolved.

via Indian Defence Review|

#antarctica #climate-change #glacier-dynamics

science11 months ago•4 min saved

Submersible Reveals Hidden Antarctic Structures Before Vanishing

An autonomous underwater vehicle named 'Ran' explored the underside of the Dotson Ice Shelf in West Antarctica, revealing complex melting patterns and topography, but was lost during a subsequent mission, highlighting the challenges of deep-sea ice shelf research crucial for understanding climate change impacts.

via Yahoo|

#antarctica #climate-change #glacier-melting

science1 year ago•4 min saved

Submersible Uncovers Antarctic Secrets, Then Disappears

A submersible named Ran, used to explore the Dotson Ice Shelf in Antarctica, has mysteriously vanished after discovering complex underwater structures and melting patterns. The disappearance poses a setback for Antarctic research, highlighting the challenges of exploring remote regions. Despite this, the data collected in 2022 has provided valuable insights into ice shelf dynamics and climate change, emphasizing the need for continued innovation in underwater exploration technology.

via Indian Defence Review|

#antarctica #climate-change #exploration