نتایج جستجو برای: abstracta mountain glacier

تعداد نتایج: 33357  

2017
Yanping Li Arne Ludwig Zuogang Peng

The uplift of the Tibetan Plateau caused significant ecogeographical changes that had a major impact on the exchange and isolation of regional fauna and flora. Furthermore, Pleistocene glacial oscillations were linked to temporal large-scale landmass and drainage system reconfigurations near the Hengduan Mountain Region and might have facilitated speciation and promoted biodiversity in southwes...

Journal: :The Cryosphere 2022

Abstract. Several studies identified heterogeneous glacier mass changes in western High Mountain Asia over the last decades. Causes for these change patterns are still not fully understood. Modelling physical interactions between surface and atmosphere several decades can provide insight into relevant processes. Such model applications, however, have data needs which usually met data-scarce reg...

Journal: :Journal Of Geophysical Research: Earth Surface 2021

Rock glaciers are creeping bodies of ice and rock that account for an important part the mountain cryosphere. In this study, we investigated long-term changes Laurichard glacier (French Alps), to understand how is responding climate change. Using feature-tracking photogrammetric measurements between 1952 2019, quantified in thickness, flow velocities from which derived ice/rock flux at a decada...

2010
GREGORY C. WILES DAVID J. BARCLAY

In Alaska, lichenometry continues to be an important technique for dating late Holocene moraines. Research completed during the 1970s through the early 1990s developed lichen dating curves for five regions in the Arctic and subarctic mountain ranges beyond altitudinal and latitudinal treelines. Although these dating curves are still in use across Alaska, little progress has been made in the pas...

Journal: :Science 2009
Peter U Clark Arthur S Dyke Jeremy D Shakun Anders E Carlson Jorie Clark Barbara Wohlfarth Jerry X Mitrovica Steven W Hostetler A Marshall McCabe

We used 5704 14C, 10Be, and 3He ages that span the interval from 10,000 to 50,000 years ago (10 to 50 ka) to constrain the timing of the Last Glacial Maximum (LGM) in terms of global ice-sheet and mountain-glacier extent. Growth of the ice sheets to their maximum positions occurred between 33.0 and 26.5 ka in response to climate forcing from decreases in northern summer insolation, tropical Pac...

Extended abstract Introduction The attention of forefront foreign researchers has focused on glacier circus. Glacial cirque is the most important pattern of glacial erosion. Deep depressions with steep walls, flat floor or low slope, half-bowl shaped (crescent shaped) are created at high altitudes in the mountains margin by the erosion of mountain glacier (Ahmadi, Feiznia, 2012). Th...

Journal: :Remote Sensing 2022

Artificial glacier melt reduction is gaining increasing attention because of rapid retreats and the projected acceleration future mass losses. However, quantifying effect artificial on glaciers in China has not been currently reported. Therefore, case Urumqi Glacier No.1 (eastern Tien Shan, China) used to conduct a scientific evaluation cover efficiency for between 24 June 28 August 2021. By co...

Journal: :SN applied sciences 2021

Abstract Pakistan’s Karakoram region has a large variety of glacier types. Equilibrium line altitude (ELA) alpine or valley glaciers represents mass balance. Field observations for estimation ELA the majority Karakoram’s are not available due to rugged glacier-covered terrains and lack climatic data above 5000 masl. Therefore, we applied hypsometrically controlled accumulation area ratio (AAR) ...

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