Article
Physics, Multidisciplinary
A. Alexandre, M. Mangeat, T. Guerin, D. S. Dean
Summary: Using a general adsorption desorption model with surface diffusion, this study analytically shows that making surfaces or obstacles attractive can accelerate dispersion.
PHYSICAL REVIEW LETTERS
(2022)
Article
Geography, Physical
Whyjay Zheng
Summary: This paper presents a new model to explain the response of glaciers to basal lubrication. By validating the model using data from 1996 to 1998, it was found that glaciers with lower Peclet number and product of glacier speed and thickness gradient are more likely to accelerate over a 20-year period.
Article
Geography, Physical
Johannes Oerlemans, Felix Keller
Summary: We propose a Simple Lake Ice Model to calculate the growth rate of lake ice in a cold and relatively dry climate. With a focus on Lake St. Moritz, Switzerland, we provide a tool that can calculate the growth rate of the ice layer based on air temperature, snow cover, and other input data. We also demonstrate the positive effect of grooming the snow on the ice thickening rate and evaluate the sensitivity of simulated ice thickness to increasing mean temperature.
JOURNAL OF GLACIOLOGY
(2023)
Article
Chemistry, Physical
Tobias Serwatka, Roy Pierre-Nicholas
Summary: In this work, the density matrix renormalization group approach is used to study the behavior of linear chains of rotating water molecules encapsulated in a carbon nanotube. The anisotropic environment provided by the nanotube breaks the inversion symmetry of the chains, leading to the lifting of ground state degeneracy and splitting between left- and right-polarized states. This results in a ferroelectric phase with a switchable polarization similar to a supramolecular qubit. The effects of external electric fields on energy splitting and quantum phase transition are discussed.
JOURNAL OF CHEMICAL PHYSICS
(2022)
Article
Multidisciplinary Sciences
Gaoxin Lin, Zhuang Zhang, Qiangjian Ju, Tong Wu, Carlo U. U. Segre, Wei Chen, Hongru Peng, Hui Zhang, Qiunan Liu, Zhi Liu, Yifan Zhang, Shuyi Kong, Yuanlv Mao, Wei Zhao, Kazu Suenaga, Fuqiang Huang, Jiacheng Wang
Summary: In this study, we demonstrate a bottom-up evolution route to prepare ultrafine Rh nanoparticles with large lattice spacings and grain boundaries by electrochemically reducing Cs3Rh2I9 halide-perovskite clusters on N-doped carbon. These Rh nanoparticles derived from Cs3Rh2I9 clusters exhibit significantly enhanced mass and area activity toward hydrogen evolution reaction in both alkaline and chloralkali electrolyte, surpassing liquid-reduced Rh nanoparticles and bulk Cs3Rh2I9-derived Rh via top-down electro-reduction transformation. Theoretical calculations reveal that water activation could be promoted on Cs3Rh2I9 clusters-derived Rh nanoparticles enriched with multiply sites, thereby facilitating alkaline hydrogen evolution.
NATURE COMMUNICATIONS
(2023)
Article
Geochemistry & Geophysics
Elvis Asihene, Durell S. Desmond, Madison L. Harasyn, David Landry, Cathrin Veenaas, Amirbahador Mansoori, Mark Christopher Fuller, Gary Stern, David G. Barber, Colin Gilmore, Dustin Isleifson
Summary: With the increasing shipping traffic in response to climate-related sea ice loss, oil spills in the Arctic are becoming more likely. This study used a controlled mesocosm to analyze the backscatter response of oil in newly formed sea ice. The findings provide baseline data interpretation for oil detection in the Arctic Ocean using C-band multipolarization radar satellites.
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
(2022)
Article
Geosciences, Multidisciplinary
Xi Lu, Liming Jiang, Cunde Xiao, Daan Li
Summary: This study investigates the spatial and temporal characteristics of ice motion in the Northeast Greenland Ice Stream (NEGIS) and finds that subglacial topography and surface runoff play crucial roles in ice motion.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Sport Sciences
Shawn M. Robbins, Philippe J. Renaud, Neil MacInnis, David J. Pearsall
Summary: The study found that trunk rotation angle is related to puck speed during ice hockey wrist shots, especially for recreational players. Coaches are encouraged to emphasize increasing trunk rotation during wrist shots to improve speed, particularly in recreational players.
JOURNAL OF SPORTS SCIENCES
(2021)
Article
Geography, Physical
Maximillian Van Wyk de Vries, Andrew D. Wickert
Summary: GIV is an open-source software toolkit for calculating high-spatial-resolution glacier velocity fields rapidly, utilizing feature tracking to extract ice velocity information. It can analyze large datasets of image pairs on a laptop or desktop computer with an easy-to-use GUI.
Article
Geosciences, Multidisciplinary
Benjamin J. Wallis, Anna E. Hogg, J. Melchior van Wessem, Benjamin J. Davison, Michiel R. van den Broeke
Summary: An analysis of satellite observations from 2014 to 2021 reveals that glaciers on the west Antarctic Peninsula experienced an average summer speed-up of 12.4% and a maximum speed change of 22.3%. This indicates a strong sensitivity of these glaciers to seasonal variations in the ice-ocean-atmosphere system, emphasizing the importance of accounting for seasonal speed variations when assessing the mass balance and sea level contribution of the Antarctic Peninsula.
Article
Multidisciplinary Sciences
Lars Max, Dirk Nuernberg, Cristiano M. Chiessi, Marlene M. Lenz, Stefan Mulitza
Summary: This study provides solid evidence for the rapid subsurface ocean warming preceding Heinrich Events in the subpolar Atlantic. The accumulation of ocean heat near the critical depth is identified as the trigger for the melting of marine-terminating portions of the Laurentide Ice Sheet. The study also suggests that weaker ocean circulation in the future may lead to accelerated interior-ocean warming, which is critical for the stability of modern Arctic glaciers and the freshwater budget of the North Atlantic.
NATURE COMMUNICATIONS
(2022)
Article
Geography, Physical
Jan De Rydt, Ronja Reese, Fernando S. Paolo, G. Hilmar Gudmundsson
Summary: Pine Island Glacier in West Antarctica has experienced significant ice loss over the past two decades, mainly due to ocean-induced thinning of its floating ice shelf and grounding line retreat. Besides these primary factors, large-scale calving and the plasticity of the bed also play important roles in the glacier's evolution.
Article
Engineering, Electrical & Electronic
Jianpeng Xu, Bo Ai, Tony Q. S. Quek
Summary: This study focuses on using reconfigurable intelligent surfaces (RIS) to suppress interference in high-speed railway (HSR) networks. By using deep deterministic policy gradient (DDPG), the proposed scheme achieves better capacity and effectively suppresses interference. Simulation results show that deploying RIS in close proximity to the onboard mobile relay (MR) is beneficial for interference suppression.
IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS
(2023)
Article
Environmental Sciences
Ross T. Palomaki, Eric A. Sproles
Summary: This study systematically investigated the effect of river ice surface roughness on C-band Sentinel-1 backscatter. The results show a weak relationship between river ice surface roughness and Sentinel-1 backscatter, indicating the need for further research to determine which physical ice properties strongly control C-band SAR backscatter.
Article
Oceanography
Fiammetta Straneo, Donald A. Slater, Caroline Bouchard, Mattias R. Cape, Mark Carey, Lorenzo Ciannelli, James Holte, Patricia Matrai, Kristin Laidre, Christopher Little, Lorenz Meire, Helene Seroussi, Maria Vernet
Summary: Greenland's coastal margins are influenced by the convergence of Arctic and Atlantic waters, sea ice, icebergs, and meltwater from the ice sheet. Understanding the impact of climate change on these regions requires a comprehensive understanding of large-scale climate variability and regional-scale interactions. This interdisciplinary study provides an initial step towards investigating the evolution of Greenland's coastal margins.