Results 91 to 100 of about 927,992 (225)

Modelling the dynamics and evolution of debris-covered glaciers

, 2022
Debris-covered glaciers are found in most of the world’s glacierized areas. The presence of debris on the glacier surface affects the ablation rate of the underlying ice. When the debris cover exceeds a thickness of a few centimetres, thermal insulation becomes dominant, thereby reducing the ablation of the underlying ice so that for a given climate ...
openaire   +2 more sources

Ecological variability of Hippopotamus antiquus from the late Early–Middle Pleistocene of Megalopolis Basin (Greece): Evidence for dynamic habitats in a glacial microrefugium

Boreas, EarlyView.
This study investigates the ecology of the extinct European Hippopotamus from the late Early–Middle Pleistocene (c. 900–400 ka) sequence of the Megalopolis Basin, a glacial microrefugium for temperate taxa in southern Greece. Using stable carbon (δ13C) and oxygen (δ18O) isotope analyses and microwear analyses of Hippopotamus dental elements, we ...
Effrosyni Roditi, Gabriele Russo, Hervé Bocherens, George E. Konidaris, Athanassios Athanassiou, Florent Rivals, Vangelis Tourloukis, Eleni Panagopoulou, Panagiotis Karkanas, Katerina Harvati   +9 more
wiley   +1 more source

Assessing glacier retreat and landform production at the ‘debris-charged’ snout of Kvíárjökull, Iceland [PDF]

, 2010
Iceland is a critical location for the study of glacier fluctuations and landform production in response to climate change due to its diverse glacial legacy and its archive of aerial photographs that provide accurately dated records of glacier retreat ...
BENNETT, GEORGINA,LUCY
core  

Mapping Debris-Covered Glaciers Using High-Resolution Imagery (GF-2) and Deep Learning Algorithms

Remote Sensing
Glacier inventories are fundamental in understanding glacier dynamics and glacier-related environmental processes. High-resolution mapping of glacier outlines is lacking, although high-resolution satellite images have become available in recent decades ...
Xin Yang, Fuming Xie, Shiyin Liu, Yu Zhu, Jinghui Fan, Hongli Zhao, Yuying Fu, Yunpeng Duan, Rong Fu, Siyang Guo   +9 more
doaj   +1 more source

Fine‐Scale Factors Affecting the Abundance and Thermal Sensitivity of Nonnative Brook Trout in Coldwater Rocky Mountain Streams

Fisheries Management and Ecology, EarlyView.
ABSTRACT The Brook Trout (Salvelinus fontinalis) is a globally distributed nonnative species that threatens native salmonids in coldwater streams. Understanding the factors regulating Brook Trout densities in coldwater refugia is critical to effective management, so we investigated (a) fine‐scale drivers of Brook Trout abundance and (b) factors ...
Nicholas S. Voss, Brett J. Bowersox, Daniel C. Nolfi, Michael C. Quist   +3 more
wiley   +1 more source

Spatial and temporal distribution of glaciers, debris-covered glaciers and rock glaciers during the last deglaciation in the Valley of the Bonaigua (Central Pyrenees)

Cuadernos de Investigación Geográfica, 2020
The application of the paleogeographic method to the study of glacial landforms and rock glaciers allows their morphometric and sedimentological characterization, the establishment of a detailed morphostratigraphic sequence and a chronological proposal ...
J. Ventura-Roca
doaj   +1 more source

Morphometric evolution of Everest region debris-covered glaciers

Geomorphology, 2020
Debris-covered glaciers in the central Himalaya have now experienced several decades of sustained ice loss, manifested predominantly in glacier surface lowering. In particular, glacier surfaces of low longitudinal gradient and low ice surface velocity have developed locally complex surface topographies and undergone profound changes in supraglacial ...
King, O, Turner, AGD, Quincey, DJ, Carrivick, JL   +3 more
openaire   +4 more sources

Enhancing Recharge Beneath Low‐Permeability Landscapes with Small‐Diameter Drywells: Token Creek, WI

Groundwater, EarlyView.
Shallow, small‐diameter drywells provide enhanced recharge in rural landscapes, bypassing the low infiltration rates caused by low permeability surficial soils and high ET rates. One year of monitoring data show several recharge events and overall high water quality.
Samantha C. Kershner, Samuel B. Brockschmidt, Michael A. Cardiff   +2 more
wiley   +1 more source

Mapping of Supra-Glacial Debris Cover in the Greater Caucasus: A Semi-Automated Multi-Sensor Approach

Geosciences
Supra-glacial debris cover is important for the control of surface ice melt and glacier retreat in mountain regions. Despite the progress in techniques based on various satellite imagery, the mapping of debris-covered glacier boundaries over large ...
Levan G. Tielidze, George Iacob, Iulian Horia Holobâcă   +2 more
doaj   +1 more source

Reconnaissance‐Scale Methods for the Identification of Groundwater Discharge to Streams

Groundwater Monitoring &Remediation, EarlyView.
Abstract Identifying groundwater discharge locations is critical for understanding and monitoring groundwater contributions to streams in terms of water quantity and quality. Streams and rivers are under increasing strain from factors, including increased urbanization, agricultural land use, groundwater extraction, and climate change, which can alter ...
Corey M. Zanatta, Andrew J. Wiebe, David L. Rudolph   +2 more
wiley   +1 more source