Results 71 to 80 of about 582 (173)

The last glacial cycle in western Norway—extensive MIS 5d glaciation, multiple glacial advances and LGM glacial advance phases

Boreas, EarlyView.
Raised marine MIS 5c sediments evidence extensive preceding (5d) glaciation in western Norway. This is the first out of five (or six) major Weichselian glacier advances that seem to correspond to North Atlantic sea surface cooling periods. Till beds capping the marine sediments show stages of pre‐LGM advance and subsequent retreat.
Eiliv Larsen, Hans Petter Sejrup, Brent Ward, William E. N. Austin, Hilary H. Birks, Oddvar Longva, Astrid Lyså, Dag Ottesen, Bente Philippsen, Martin Seiler   +9 more
wiley   +1 more source

Ecological variability of Hippopotamus antiquus from the late Early–Middle Pleistocene of Megalopolis Basin (Greece): Evidence for dynamic habitats in a glacial microrefugium

Boreas, EarlyView.
This study investigates the ecology of the extinct European Hippopotamus from the late Early–Middle Pleistocene (c. 900–400 ka) sequence of the Megalopolis Basin, a glacial microrefugium for temperate taxa in southern Greece. Using stable carbon (δ13C) and oxygen (δ18O) isotope analyses and microwear analyses of Hippopotamus dental elements, we ...
Effrosyni Roditi, Gabriele Russo, Hervé Bocherens, George E. Konidaris, Athanassios Athanassiou, Florent Rivals, Vangelis Tourloukis, Eleni Panagopoulou, Panagiotis Karkanas, Katerina Harvati   +9 more
wiley   +1 more source

Lead isotope evidence for Antarctic Ice Sheet changes in the Weddell Sea sector since the Last Glacial Maximum

Boreas, EarlyView.
The Weddell Sea influences global ocean circulation and sea level through modulating Antarctic Bottom Water formation and Antarctic Ice Sheet discharges, but the history of ice‐sheet dynamics in this region remains poorly constrained due to limited well‐dated geological records.
Huang Huang, Yuanyang Hu, Marcus Gutjahr, Florian Kirsch, Lijuan Lu, Jianjun Zou, Xuefa Shi, Michael Bollen, Jimin Yu, Gerhard Kuhn   +9 more
wiley   +1 more source

Comparison between a multi-variate nudging method and the ensemble Kalman filter for sea-ice data assimilation

Journal of Glaciology, 2018
Increasing ship traffic and human activity in the Arctic has led to a growing demand for accurate Arctic weather forecast. High-quality forecasts obtained by models are dependent on accurate initial states achieved by assimilation of observations.
SINDRE M. FRITZNER, RUNE G. GRAVERSEN, KEGUANG WANG, KAI H. CHRISTENSEN   +3 more
doaj   +1 more source

Perennially ice‐covered lake facies as proxies for ice cover properties and climate: Insights from Lake Joyce, Antarctica

Sedimentology, EarlyView.
ABSTRACT Process‐based depositional models for perennially ice‐covered lakes (PICLs) are important for interpreting palaeolake deposits and their connection to past climate. PICLs are only stable under specific climate states, and unlike other ice‐free or seasonally ice‐covered lakes, PICL deposits generally have bimodal grain sizes: mud introduced by ...
Frances Rivera‐Hernández, Dawn Y. Sumner, Tyler J. Mackey   +2 more
wiley   +1 more source

Geomorphological and historical records of the surge-type behaviour of Hansbreen (Svalbard)

Annals of Glaciology
This paper presents geomorphological and historical records of the surge-type behaviour of Hansbreen, one of the most studied tidewater glaciers in Svalbard.
Aleksandra Osika, Jacek Jania
doaj   +1 more source

Finite Viscoelastic Modeling of Ice Shelves Using Glen's Flow Law and Depth‐Dependent Material Properties

Proceedings in Applied Mathematics and Mechanics, Volume 26, Issue 4, December 2026.
ABSTRACT Ice shelves are floating seaward extensions of glaciers that form where land‐based ice flows into the ocean. Recent observations suggest that their mechanical behavior is suitably described by a viscoelastic Maxwell model, as this framework captures both the instantaneous elastic response and the time‐dependent viscous flow of ice.
Marvin Koßler, Sebastian Skatulla, Angelika Humbert, Ralf Müller, Jörg Schröder   +4 more
wiley   +1 more source

Seasonal evolution of supraglacial lakes and cascaded drainage events in Northeast Greenland Ice Sheet during 2019–2020

Journal of Glaciology
Supraglacial lakes on Northeast Greenland Ice Stream glaciers (79N and Zachariæ Isstrøm) store and route meltwater to the bed, yet controls on their evolution and cascading drainage remain poorly understood.
Gopika Das, Saurabh Vijay, Sushil Kumar Singh   +2 more
doaj   +1 more source

Fracture and Calving Front Evolution: A Case Study of Fimbul Ice Shelf, Antarctica

Proceedings in Applied Mathematics and Mechanics, Volume 26, Issue 4, December 2026.
ABSTRACT This study combines historical records, satellite remote sensing data, and inverse modelling to investigate crack formation and calving front evolution of the Fimbul Ice Shelf, Antarctica. Historical maps from the 1950s, together with satellite imagery from 1970s–2026, are used to reconstruct calving‐front positions and track the evolution of ...
Angelika Humbert, Lea‐Sophie Höyns, Sebastian Skatulla, Moreblessings Shoko, Patroba Odera, Alex Yumbu, Bhooshay Dookee, Dana Floricioiu, Rabea Sondershaus, Ralf Müller   +9 more
wiley   +1 more source

Notes from the field: An interdisciplinary perspective on the experiences, challenges and solutions for conducting fieldwork in glacial and periglacial environments

Nordia Geographical Publications
Interdisciplinary research approaches are critical to understanding the profound shifts in glacial and periglacial environments due to climate change.
Virginija Popovaite, Pamela Bachmann-Vargas, Ella Wood, Anna Hübner, Eleni Kavvatha, Seira Duncan, Benoît Lauzon   +6 more
doaj   +1 more source