Results 11 to 20 of about 103 (97)

A Consistent Framework for Coupling Basal Friction With Subglacial Hydrology on Hard‐Bedded Glaciers [PDF]

Geophysical Research Letters, Volume 49, Issue 13, 16 July 2022., 2022
Abstract Below hard‐bedded glaciers, both basal friction and distributed subglacial drainage are thought to be controlled by a network of cavities. Previous coupled hydro‐mechanical models, however, describe cavity‐driven friction and hydraulic transmissivity independently, resulting in a physically inconsistent cavity evolution between the two ...
Adrien Gilbert, Florent Gimbert, Kjetil Thøgersen, Thomas V. Schuler, Andreas Kääb   +4 more
wiley   +2 more sources

Structural and functional responses of invertebrate communities to climate change and flow regulation in alpine catchments [PDF]

Global Change Biology, Volume 25, Issue 5, Page 1612-1628, May 2019., 2019
We explored the structural and functional effects of climate change in interaction with flow regulation by comparing data collected in the 1970s and 2010s in regulated and unregulated alpine catchments of France. Divergent structural but convergent functional responses were found between free‐flowing and regulated catchments. Although cold‐adapted taxa
Daniel Bruno, Oscar Belmar, Anthony Maire, Adrien Morel, Bernard Dumont, Thibault Datry   +5 more
wiley   +2 more sources

Repeating Low Frequency Icequakes in the Mont‐Blanc Massif Triggered by Snowfalls

Journal of Geophysical Research: Earth Surface, Volume 127, Issue 12, December 2022., 2022
Abstract Deformation mechanisms of glaciers are highly sensitive to basal temperature; the motion of temperate glaciers is dominated by basal slip while cold‐based glaciers deform mainly by internal creep. While basal slip is usually aseismic, unstable slip sometimes occurs and can be detected by seismometers.
Agnès Helmstetter
wiley   +1 more source

Evidence of Seasonal Uplift in the Argentière Glacier (Mont Blanc Area, France)

Journal of Geophysical Research: Earth Surface, Volume 127, Issue 7, July 2022., 2022
Abstract The hydromechanical processes by which basal water controls sliding at the glacier bed are poorly known, despite glacier basal motion being responsible for a large part of ice flux in temperate alpine glaciers. Previous studies suggest that sliding strongly relates to the quantity of water being stored at the ice‐bedrock interface.
Christian Vincent, Adrien Gilbert, Andrea Walpersdorf, Florent Gimbert, Olivier Gagliardini, Bruno Jourdain, Juan Pedro Roldan Blasco, Olivier Laarman, Luc Piard, Delphine Six, Luc Moreau, Diego Cusicanqui, Emmanuel Thibert   +12 more
wiley   +1 more source

Ice‐Dynamical Glacier Evolution Modeling—A Review

Reviews of Geophysics, Volume 60, Issue 2, June 2022., 2022
Abstract Glaciers play a crucial role in the Earth System: they are important water suppliers to lower‐lying areas during hot and dry periods, and they are major contributors to the observed present‐day sea‐level rise. Glaciers can also act as a source of natural hazards and have a major touristic value.
H. Zekollari, M. Huss, D. Farinotti, S. Lhermitte   +3 more
wiley   +1 more source

Dynamic Imaging of Glacier Structures at High‐Resolution Using Source Localization With a Dense Seismic Array

Geophysical Research Letters, Volume 49, Issue 6, 28 March 2022., 2022
Abstract Dense seismic array monitoring combined with advanced processing can help retrieve and locate a variety of seismic sources with unprecedented resolution and spatial coverage. We present a methodology that goes beyond classical localization algorithms through gathering various types of sources (impulsive or continuous) using a single scheme ...
Ugo Nanni, Philippe Roux, Florent Gimbert, Albanne Lecointre   +3 more
wiley   +1 more source

Do Existing Theories Explain Seasonal to Multi‐Decadal Changes in Glacier Basal Sliding Speed?

Geophysical Research Letters, Volume 48, Issue 15, August 2021., 2021
Abstract Theoretical descriptions of ice‐bed friction beneath glaciers and ice sheets are key to predict changes in sea level. Applicability of these theories at the natural landscape scale and over long periods has however not been tested. Here we test hard bed friction laws by analyzing a unique data set of in‐situ basal sliding measurements ...
F. Gimbert, A. Gilbert, O. Gagliardini, C. Vincent, L. Moreau   +4 more
wiley   +1 more source

Integration of Corner Reflectors for the Monitoring of Mountain Glacier Areas with Sentinel-1 Time Series

Remote Sensing, 2019
Glacier flow and slope instabilities in Alpine mountain areas represent a hazard issue. Sentinel-1 satellites provide regular Synthetic Aperture Radar (SAR) acquisitions that are potentially useful to monitor these areas, but they can be affected by ...
Matthias Jauvin, Yajing Yan, Emmanuel Trouvé, Bénédicte Fruneau, Michel Gay, Blaise Girard   +5 more
doaj   +1 more source

Angelo Maria Spinazzi argentiere nella Roma del Settecento: la committenza portoghese

OADI, 2022
Viene qui presa in esame l’attività dell’argentiere Angelo Maria Spinazzi (1693, dopo il 1785 / prima del 1789) nell’ambito della committenza portoghese, a partire dai primissimi anni Venti, subito dopo aver ottenuto la patente di argentiere, Spinazzi lavorò per l’ambasciata portoghese nella città pontificia e negli anni Quaranta fu coinvolto nell ...
openaire   +2 more sources

Sliding velocity fluctuations and subglacial hydrology over the last two decades on Argentière glacier, Mont Blanc area

Journal of Glaciology, 2016
The subglacial observatory beneath the Argentière glacier provides a rare opportunity to study the interactions between glacier sliding velocity and subglacial runoff.
CHRISTIAN VINCENT, LUC MOREAU
doaj   +1 more source