Results 81 to 90 of about 3,155 (221)

Late Holocene moisture variability in Arctic Alaska from chitin δ18O

Boreas, EarlyView.
Amplified warming in the Arctic has resulted in reduced sea‐ice extent, which can impact regional climate dynamics. Elucidating past moisture variability in response to changing temperatures and sea‐ice conditions can offer insight into how anthropogenic climate change may impact Arctic areas such as the Alaskan North Slope in the future. We contribute
Briana A. Edgerton, Melissa L. Chipman
wiley   +1 more source

Droughts and human impact in the ancient Uaymil region of the Maya lowlands inferred from a 2800‐year sedimentary archive at Lake Kaná, Mexico

Boreas, EarlyView.
The relationship between the climate and societal transformation in Maya lowlands has long been debated, particularly the role of drought in shaping the civilization trajectory during the Classic Period. A high‐resolution, multi‐proxy, geochemical record from Lake Kaná, located in the underexplored Uaymil region of the Yucatán Peninsula in Mexico ...
Haydar B. Martinez‐Dyrzo, Priyadarsi D. Roy, Benjamin Gwinneth, Irma G. Vargas‐Martinez, Alejandro A. Aragon‐Moreno, Roger Medina‐Gonzales   +5 more
wiley   +1 more source

AMIGOS-3 multi-sensor stations and the climate, ice and ocean conditions at Thwaites Eastern Ice Shelf during 2020–22

Journal of Glaciology
The Automated Meteorology—Ice—Geophysics Observation System 3 (AMIGOS-3) is a multi-sensor on-ice ocean mooring and weather, camera and precision GPS measurement station, controlled by a Python script.
Ted A. Scambos, T. White, B. Wallin, M. Truffer, G. Collao-Barrios, C. Kratt, S. Tyler, E.C. Pettit, C.T. Wild, S. Arora, S. Edwards, R. Fotherby, C. Meha, J. Soltys, E. Tomlinson, R. Weatherby, R. Ross, A. Wåhlin, T.S. Dotto, K. Alley, A. Muto   +20 more
doaj   +1 more source

Identifying the pre‐Odra river system with hydroacoustic and seismic reflection imagery offshore Rügen Island, southern Baltic Sea

Boreas, EarlyView.
Understanding the course and dynamics of ancient river systems, such as the pre‐Odra, provides valuable insights into the post‐glacial evolution of landscapes and riverine processes. The northwest‐trending pre‐Odra was an important drainage system of the European mainland into the Baltic Basin during and after the Scandinavian Ice Sheet retreat ...
Maryse C. Schmidt, Elisabeth Seidel, Christian Hübscher, Benedikt Haimerl, Jonas Preine   +4 more
wiley   +1 more source

Nitrogen and sulfur metabolisms encoded in prokaryotic communities associated with sea ice algae. [PDF]

ISME Commun, 2023
Bellas CM, Campbell K, Tranter M, Sánchez-Baracaldo P.   +3 more
europepmc   +1 more source

Palaeowinds and depositional conditions from Holocene loess in Sweden and Finland

Boreas, EarlyView.
The nature of deglacial and Holocene wind regimes in Fennoscandia is debated, as is the degree to which wind‐blown loess deposits exist in the region. Loess deposits in Fennoscandia are often relatively thin, discontinuous and less well‐sorted than typical loess, and questions remain over the degree of their post‐depositional reworking and the impact ...
Calum J. Edward, Thomas Stevens, Anu Kaakinen, Jukka‐Pekka Palmu, Juha‐Pekka Lunkka, Ramona Schneider, Bjarne Almqvist   +6 more
wiley   +1 more source

Glacier algae phenology on the Qaanaaq Ice Cap (Northwest Greenland)

Journal of Glaciology
Glacier algae are relevant factors in the darkening phenomenon of glaciers, especially at the margins of the ice sheets. This study focuses on glacier algae variation during summer seasons in the 2016–2023 period at Qaanaaq Ice Cap, NW Greenland.
Giacomo Traversa, Yukihiko Onuma, Davide Fugazza, Roberto Garzonio, Filippo Calì Quaglia, Nozomu Takeuchi, Biagio Di Mauro   +6 more
doaj   +1 more source

Thorncliffe Formation: A proglacial to subglacial lacustrine basin sequence, Greater Toronto Region, Canada

Boreas, EarlyView.
Map of Lower sediment (LS) thickness is a surrogate for the distribution of Thorncliffe Formation (TF) and ~75% of TF thickness from the slope of Niagara Escarpment east to Brighton. Inset images show the LS sequence at the Don Valleys brickyards (DVBY) and undeformed TF sand and gravel (~15 m) below Newmarket Till (NT) at sites L and Co.
David R. Sharpe, Charles E. Logan, Ross D. Knight, Andre J.‐M. Pugin   +3 more
wiley   +1 more source

GEOCLASS-image – a versatile machine learning environment for ice-surface classification from high-resolution image data

Frontiers in Earth Science
GEOCLASS-image is an open source cyberinfrastructure (CI) for automated classification of spatial surface structures based on high-resolution image data, consisting of a data-driven and physically informed neural network (NN) system and a data analysis ...
Silas Twickler, Ute Herzfeld, Thomas Trantow   +2 more
doaj   +1 more source

Chironomid‐based summer temperature reconstruction of the Eemian–Weichselian transition at Lichtenberg, northern Germany

Boreas, EarlyView.
Understanding the temperature variability of past interglacial cycles is essential to predict future climates. We present a new summer temperature reconstruction, based on the subfossil chironomid record from a small palaeolake adjacent to the Middle Palaeolithic site of Lichtenberg, northern Germany. The record spans from the Saalian late glacial over
Sonja Rigterink, Bartosz Kotrys, Michael Hein, Xuan Li, Neda Rahimzadeh, Agnieszka Gruszczyńska, Marcel Weiss, Brigitte Urban, David Colin Tanner, Tobias Lauer, Antje Schwalb   +10 more
wiley   +1 more source