نتایج جستجو برای: glacier

تعداد نتایج: 7428  

2007
Ian A. Brown Miriam Jackson Matthias Braun Rune Engeset

Mass-balance measurements describe the difference between accumulation and ablation and therefore the annual climate response of a glacier. Such measurements are the standard observation of glacier ‘health’ and when coupled with frontal, area or volume observations can describe the dynamic response of a glacier to climate over longer time scales. Mass balance measurements are made in situ and a...

2015
SAHIL SOOD Praveen Thakur

Glaciers are directly affected by the recent trends of global warming. Himalayan glaciers are located near Tropic of Cancer this belt receives more heat thus Himalayan glaciers are more sensitive to climate change. Major rivers of Asia originates from these glaciers and they are only source of fresh water for millions of people living in Indian sub-continent. Due to highly rugged terrain and in...

2007
Jing ZHANG Uma S. BHATT Wendell V. TANGBORN Craig S. LINGLE

The response of glaciers to changing climate is explored with an atmosphere/glacier hierarchical modeling approach, in which global simulations are downscaled with an Arctic MM5 regional model which provides temperature and precipitation inputs to a glacier mass-balance model. Themass balances of Hubbard and Bering Glaciers, south-central Alaska, USA, are simulated for October 1994–September 20...

2015
Xinyang Yu Changhe Lu

Accurately mapping and monitoring glacier changes over decades is important for providing information to support sustainable use of water resource in arid regions of northwest China. Since 1970, glaciers in the Eastern Altun Mountains showed remarkable recession. Further study is indispensable to indicate the extent and amplitude of glacial change at basin and individual glacier scale. In this ...

2010
J. De Matías J. J. De Sanjosé

Rock glacier is a rare case of study for 3D modelling. We use a stereo feature-based method and multi-view stereo reconstruction algorithms to get different types of cartography. The proposed method has been tested in a real rock glacier example (Veleta in Sierra Nevada, Spain) for producing maps with good results. This rock glacier is of high scientific interest because it is the southernmost ...

1999
Jesko Schaper Jaroslav Martinec Klaus Seidel

Runo€ in glacierized alpine basins results from both seasonal snow cover and glacier melt. In this paper we present a case study for an improved runo€ modelling of the basin Massa-Blatten, 196 km, 1447±4191 m a.s.l. Using high resolution satellite sensors, it is possible to separately map snow cover and glacier areas. From the satellite data we derive depletion curves of snow covered areas in s...

2010
David E. SHEAN David R. MARCHANT

We present results from ground-penetrating radar (GPR) and seismic surveys for the Mullins Valley debris-covered glacier (Mullins Glacier), Antarctica, that yield local ice-thickness estimates of 80–110m in upper Mullins Valley and 150m in upper Beacon Valley. Englacial debris in upper Mullins Glacier occurs as scattered cobbles and as discrete layers. One extensive englacial debris layer, whic...

2007
Jing Zhang Uma S. Bhatt Wendell V. Tangborn Craig S. Lingle

[1] An atmosphere/glacier modeling system is described for estimating the mass balances of glaciers in both current and future climate in order to estimate their probable future contributions to rising sea level. Dynamically downscaled output from a regional atmospheric model, driven by global atmospheric reanalysis, is used to force a precipitationtemperature-area-altitude (PTAA) glacier mass ...

2017
Takumi Murakami Takahiro Segawa Roman Dial Nozomu Takeuchi Shiro Kohshima Yuichi Hongoh

The community structure of bacteria associated with the glacier ice worm Mesenchytraeus solifugus was analyzed by amplicon sequencing of 16S rRNA genes and their transcripts. Ice worms were collected from two distinct glaciers in Alaska, Harding Icefield and Byron Glacier, and glacier surfaces were also sampled for comparison. Marked differences were observed in bacterial community structures b...

2008
Adina E. RACOVITEANU Yves ARNAUD Mark W. WILLIAMS Julio ORDOÑEZ

We present spatial patterns of glacier fluctuations from the Cordillera Blanca, Peru, (glacier area, terminus elevations, median elevations and hypsography) at decadal timescales derived from 1970 aerial photography, 2003 SPOT5 satellite data, Geographic Information Systems (GIS) and statistical analyses. We derived new glacier outlines from the 2003 SPOT images, and ingested them in the Global...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید