Results 51 to 60 of about 131,619 (292)

Heterogeneous Exhumation Mechanisms in Neoproterozoic Collisional Metamorphism: P–T Constraints From Pelotas and Punta del Este Terranes, Southern Brazil and Uruguay

Geological Journal, EarlyView.
Petrography, thermobarometry, and pseudosection modelling reveal peak metamorphic conditions of 3–7.5 kbar and 520°C–800°C in Tonian‐Cryogenian orthogneisses of the Dom Feliciano Belt. Metamorphic field gradients of 27°C/km–39°C/km and variable exhumation mechanisms support correlation of these units as remnants of a Himalayan‐type Piratini Orogeny ...
Thaiane Niederauer‐Santos, Carla Cristine Porcher, Daniel Triboli Vieira, Edinei Koester, Diego Jaldín, Karina Luengo, Luisa Caon   +6 more
wiley   +1 more source

Increasing contribution of grain boundary compliance to polycrystalline ice elasticity as temperature increases

Journal of Glaciology, 2018
Measured elastic stiffnesses of ice polycrystals decrease with increasing temperature due to a decrease in grain boundary stiffness with increasing temperature.
COLIN M. SAYERS
doaj   +1 more source

Sustained retreat of the Pine Island Glacier [PDF]

, 2013
We use satellite observations to show that, between 1992 and 2011, the Pine Island Glacier hinge line retreated at a rate of 0.95 ± 0.09 km yr−1 despite a progressive steepening and shoaling of the glacier surface and bedrock slopes, respectively, which ...
Vaughan, D. G., Gourmelen, N., Kim, S. W., Wingham, D. J., Shepherd, A., Park, J. W.   +5 more
core   +1 more source

Bryozoan‐Rich Carbonate Units of the Erfoud Area (SE Morocco) Record Latest Katian to Early Hirnantian Interglacial Intervals

Geological Journal, EarlyView.
In this study, we re‐examine the depositional architecture of the Erfoud limestone in Morocco. Introducing new biostratigraphic constraints from chitinozoan assemblages, we show that Katian to Hirnantian bryozoan‐pelmatozoan meadows reflect flooding events linked to a series of interglacial transgressions known to have occurred immediately prior to the
Philippe Razin, Jean‐François Ghienne, Amira Meddour, Lorena Tessitore, Thijs R. A. Vandenbroucke   +4 more
wiley   +1 more source

Rock glaciers in the Hindu Kush Himalaya: A regional synthesis

Arctic, Antarctic, and Alpine Research
Rock glaciers are cryospheric landforms in high-mountain regions and indicators of permafrost occurrence and change under accelerating climate warming. This review synthesizes 67 peer-reviewed studies on rock glaciers across the Hindu Kush Himalaya (HKH)
Prashant Baral, Mohd. Farooq Azam, Sonam Wangchuk, Gh Jeelani, Suraj Mal, A. P. Dimri   +5 more
doaj   +1 more source

Seismic observations of crevasse growth following rain-induced glacier acceleration, Haupapa/Tasman Glacier, New Zealand

Annals of Glaciology, 2019
Changing rates of water input can affect both the flow of glaciers and ice sheets and their propensity to crevasse. Here we examine geodetic and seismic observations during two substantial (10–18-times background velocity) rain-induced glacier ...
Samuel Taylor-Offord, Huw Horgan, John Townend, J. Paul Winberry   +3 more
doaj   +1 more source

The precision of radar-derived subglacial bed topography: a case study from Pine Island Glacier, Antarctica

Annals of Glaciology, 2020
Recent advances in the measurement of bedforms beneath active ice streams have been made using ground-based grid profiling using impulse radar systems operating with centre frequencies in the 3–5 MHz range.
Edward C. King
doaj   +1 more source

Station‐Based Assessment of Sub‐Seasonal Climate Trends in the Tyrolean Alps (Austria)

International Journal of Climatology, EarlyView.
In this study, we quantify the magnitude and significance of sub‐seasonal trends in the Tyrolean Alps (Austria) by collecting, processing and analysing meteorological observations from a dense network of climate stations. Our analysis indicates a warming rate of 0.43°C/dec over 1964–2023, greater sub‐seasonal trend variability when the analysis window ...
Erwin Rottler, Elena Bertazza, Franz Wagner, Gertraud Meißl, Theresa Schellander‐Gorgas, Johannes Schöber, Ulrich Strasser   +6 more
wiley   +1 more source

QFuego-Patagonia: A comprehensive glacier-related dataset for Patagonia and Tierra del Fuego, South America

Journal of Glaciology
Patagonia and Tierra del Fuego (Austral Andes) are the most glacierised regions in the Southern Hemisphere, where glaciers have experienced significant mass changes in recent decades.
David Farías-Barahona, Matthias Braun, Marius Schaefer, Shin Sugiyama, Andrés Rivera, Gino Casassa, Valentina Peña-Santibañez, Johannes Fürst, Franziska Temme, Ilaria Tabone, Masamu Aniya, Jan Erik Arndt, Rodrigo Aguayo, Sebastien Bertrand, Norbert Blindow, Francisca Bown, Claudio Bravo, Tomas Carrasco-Escaff, Camila Cáceres, Bethan J. Davies, Inés Dussaillant, Daniel Falaschi, Alfonso Fernández, Gisella Gacitúa, Ricardo Giesecke, Neil F. Glasser, Shuntaro Hata, Jorge Huenante, Inigo Irarrazaval, Pablo Iribarren-Anacona, Eñaut Izagirre, Lukas Langhamer, Thomas Loriaux, Pamela Maldonado, Philipp Malz, Luciano Mendoza, Morgan McDonnell, Wolfgang H. Meier, Romain Millan, Masahiro Minowa, Michał Pętlicki, Andreas Richter, Lucas Ruiz, Tobias Sauter, Ryan Wilson   +44 more
doaj   +1 more source

Geophysics, Colorado School of Mines, Spring 2011

, 2022
Newsletter of the Geophysics Department at Colorado School of ...

core