Results 51 to 60 of about 9,482 (285)

A Drifting and Blowing Snow Scheme in the Weather Research and Forecasting Model

Journal of Advances in Modeling Earth Systems
Wind‐driven redistribution of surface snow is one of the key factors leading to heterogeneous accumulation of snow at small scales. Understanding the processes that lead to this heterogeneous accumulation is, therefore, of great importance to many ...
Manuel Saigger, Tobias Sauter, Christina Schmid, Emily Collier, Brigitta Goger, Georg Kaser, Rainer Prinz, Annelies Voordendag, Thomas Mölg   +8 more
doaj   +1 more source

Combining “Deep Learning” and Physically Constrained Neural Networks to Derive Complex Glaciological Change Processes from Modern High-Resolution Satellite Imagery: Application of the GEOCLASS-Image System to Create VarioCNN for Glacier Surges

Remote Sensing
The objectives of this paper are to investigate the trade-offs between a physically constrained neural network and a deep, convolutional neural network and to design a combined ML approach (“VarioCNN”).
Ute C. Herzfeld, Lawrence J. Hessburg, Thomas M. Trantow, Adam N. Hayes   +3 more
doaj   +1 more source

Application of the radionuclide 210Pb in glaciology – an overview [PDF]

, 2020
210Pb is an environmental radionuclide with a half-life of 22.3 years, formed in the atmosphere via radioactive decay of radon (222Rn). 222Rn itself is a noble gas with a half-life of 3.8 days and is formed via radioactive decay of uranium (238U ...
Tobler, Leonhard (author), Leonhard Tobler, Schwikowski, Margit (author), Gäggeler, Heinz W. (author), Theo M. Jenk, Margit Schwikowski, Heinz W. Gäggeler, Jenk, Theo M. (author)   +7 more
core   +1 more source

Mercury cycling during the last glacial period in Arctic Lake El'gygytgyn, NE Russia

Journal of Quaternary Science, EarlyView.
ABSTRACT Tectonic processes play a key role in the global mercury (Hg) cycle on geological timescales, by mobilising Hg from deep Earth reservoirs to the surface. These natural fluxes also introduce a dynamic component to the terrestrial Hg cycle that can interact with other environmental signals and influence Hg delivery to sedimentary records.
Alice R. Paine, Joost Frieling, Bernd Wagner, Martin Melles, Volker Wennrich, Tamsin A. Mather, Stuart A. Robinson, David M. Pyle   +7 more
wiley   +1 more source

Distributed acoustic sensing of microseismic sources and wave propagation in glaciated terrain

Nature Communications, 2020
In this study, Walter and colleagues deploy a 1 km long fiber optics cable on a glacier surface. Via the use of distributed acoustic sensing, the authors are capable of monitoring glacier dynamics and Alpine mass movements.
F. Walter, D. Gräff, F. Lindner, P. Paitz, M. Köpfli, M. Chmiel, A. Fichtner   +6 more
doaj   +1 more source

A Generalized Interpolation Material Point Method for Shallow Ice Shelves. 2: Anisotropic Nonlocal Damage Mechanics and Rift Propagation

Journal of Advances in Modeling Earth Systems, 2021
Ice shelf fracture is responsible for roughly half of Antarctic ice mass loss in the form of calving and can weaken buttressing of upstream ice flow.
Alex Huth, Ravindra Duddu, Ben Smith
doaj   +1 more source

The edges of glaciology

An IGS international symposium on ‘The edges of glaciology’ was held in the University of Limerick from 2 to 7 July 2023, and this article is the preface to the resulting issue of the Annals of Glaciology. The edges of glaciology are most obviously those
Felix S L Ng (8012813), Andrew Fowler (12350980)   +1 more
core   +1 more source

Carbon isotope geochemistry of organic matter in volcanic paleosols constrains paleo‐environmental variations

Journal of Quaternary Science, EarlyView.
ABSTRACT The Fiorano quarry paleosol developed within the Colli Albani volcanic district (Italy) in the time interval bracketed by the deposition of the Pozzolanelle pyroclastic‐flow unit (365 ± 4 ka) and the emplacement of the Capo di Bove lava flow (277 ± 2 ka).
Eduardo Di Marcantonio, Luca Aldega, Luigi Dallai, Mario Gaeta, Fabrizio Marra   +4 more
wiley   +1 more source

First finding of Icelandic tephra in Czechia: Vedde Ash identified in palaeolake sediments of Stará Jímka

Journal of Quaternary Science, EarlyView.
ABSTRACT In this study, we report the first documented occurrence of the Icelandic Vedde Ash (VA) in the Bohemian Forest, identified within palaeolake sediments from Stará Jímka, Czechia, representing the first Icelandic tephra layer identified in Czechia.
Verena Meier, Simon A. Larsson, Martin Racek, Daniel Vondrák   +3 more
wiley   +1 more source

Southern Portugal hydroclimate of the last millennium from near‐annually resolved speleothem records

Journal of Quaternary Science, EarlyView.
ABSTRACT Hydroclimate in Portugal is influenced by the North Atlantic subtropical high‐pressure system (the Azores High) and by internal climate modes, most prominently the North Atlantic Oscillation, which may shift in position and/or intensity due to anthropogenic climate change.
Alaina Chormann, Alan D. Wanamaker, Diana Thatcher, David P. Gillikin, Yemane Asmerom, Victor Polyak, Caroline C. Ummenhofer, Frederico Tátá Regala, Anouk Verheyden, Suzanne Ankerstjerne, Rhawn F. Denniston   +10 more
wiley   +1 more source