Results 51 to 60 of about 3,111 (167)

Population and spatial dynamics of desert bighorn sheep in Grand Canyon during an outbreak of respiratory pneumonia

Frontiers in Ecology and Evolution
IntroductionTerrestrial species in riverine ecosystems face unique constraints leading to diverging patterns of population structure, connectivity, and disease dynamics.
Clinton W. Epps, P. Brandon Holton, Ryan J. Monello, Rachel S. Crowhurst, Sarah M. Gaulke, William M. Janousek, Tyler G. Creech, Tabitha A. Graves   +7 more
doaj   +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

Glaciers as an Important Element of the World Glacier Monitoring Implemented in Svalbard

, 2017
Glaciers are not only contributors to the sea level rise but also important players in the circulation of pollutants. Over a billion people apply glacial waters for domestic purposes; hence, both the quality and quantity of this water should be monitored.
Lehmann‐Konera, Sara, Ruman, Marek, Kozioł, Krystyna, Gajek, Grzegorz, Polkowska, Żaneta   +4 more
openaire   +5 more sources

Automating long-term glacier dynamics monitoring using single-station seismological observations and fuzzy logic classification: a case study from Spitsbergen

Journal of Glaciology, 2017
Retreating glaciers are a consequence of a warming climate. Thus, numerous monitoring campaigns are being carried out to increase understanding of this on-going process.
W. GAJEK, J. TROJANOWSKI, M. MALINOWSKI
doaj   +1 more source

Research on Monitoring the Speed of Glacier Terminus Movement Based on the Time-Series Interferometry of a Ground-Based Radar System

Remote Sensing
The Tibetan Plateau (TP) is the largest glacier reserve outside the Antarctic and Arctic regions. Climate warming has affected the reserve of freshwater resources and led to frequent glacier disasters.
Limin Zhai, Qinghua Ye, Yongqing Liu, Shuyi Liu, Yan Jia, Xiangkun Zhang   +5 more
doaj   +1 more source

Using PlanetScope-derived time-series elevation models and orthophotos to track glacier 3D dynamics in mid-latitude mountain regions

GIScience & Remote Sensing
Assessing glacier surface height changes provides crucial insights into glacier mass loss and the impact of climate variability. Remote sensing images play a vital role in providing data points for monitoring.
Shengxi Gui, Rongjun Qin
doaj   +1 more source

Fifty years of studying the Medvezhiy Glacier (West Pamirs) by the Institute of Geography, RAS

Лëд и снег, 2015
Overview of researches conducted over 50 years (1963–2012) by Institute of Geography RAS on the surging glacier Medvezhiy, the West Pamirs is given. Ground investigations (changes of its surface altitude, ice movement velocity, ablation, ice thickness ...
G. B. Osipova
doaj   +1 more source

Insights From Two Decades of Seismicity at Columbia Glacier

Geophysical Research Letters
We use Columbia Glacier as a case study to demonstrate how seismically cataloged calving events in Alaska can track glacier evolution over two decades. By combining this catalog—a serendipitous byproduct of earthquake monitoring—with terminus positions ...
Sebin John, Michael E. West, Martin Truffer   +2 more
doaj   +1 more source

The challenge of monitoring glaciers with extreme altitudinal range: mass-balance reconstruction for Kahiltna Glacier, Alaska

Journal of Glaciology, 2018
Glaciers spanning large altitudinal ranges often experience different climatic regimes with elevation, creating challenges in acquiring mass-balance and climate observations that represent the entire glacier.
JOANNA C. YOUNG, ANTHONY ARENDT, REGINE HOCK, ERIN PETTIT   +3 more
doaj   +1 more source

Updating Norway’s glacial lake extents in 2023–2024 using Sentinel-1 & Sentinel-2 data and machine learning

Journal of Glaciology
Glacial lakes are increasing in number and size worldwide, posing growing risks for outburst floods. Norway’s last glacial lake inventory used semi-automatic mapping on Sentinel-2 imagery from 2018–19.
Ronja Lappe, Liss Marie Andreassen
doaj   +1 more source