Evaluating patterns of temporal glacier changes in Greater Himalayan Range, Jammu & Kashmir, India

2011 ◽  
Vol 26 (4) ◽  
pp. 321-338 ◽  
Author(s):  
Arvind C. Pandey ◽  
Swagata Ghosh ◽  
M. S. Nathawat
Keyword(s):  
Glacier Changes

scholarly journals Glacier elevation and mass changes over the central Karakoram region estimated from TanDEM-X and SRTM/X-SAR digital elevation models

2016 ◽  
Vol 57 (71) ◽  
pp. 273-281 ◽  
Author(s):  
Melanie Rankl ◽  
Matthias Braun
Keyword(s):  
High Resolution ◽  
Snow Cover ◽  
Digital Elevation Models ◽  
Mass Balances ◽  
Freshwater Resources ◽  
Digital Elevation ◽  
Glacier Changes ◽  
Kinematic Waves ◽  
Elevation Changes ◽  
River Communities

AbstractSnow cover and glaciers in the Karakoram region are important freshwater resources for many down-river communities as they provide water for irrigation and hydropower. A better understanding of current glacier changes is hence an important informational baseline. We present glacier elevation changes in the central Karakoram region using TanDEM-X and SRTM/X-SAR DEM differences between 2000 and 2012. We calculated elevation differences for glaciers with advancing and stable termini or surge-type glaciers separately using an inventory from a previous study. Glaciers with stable and advancing termini since the 1970s showed nearly balanced elevation changes of -0.09 ±0.12 m a-1 on average or mass budgets of -0.01 ±0.02Gt a-1 (using a density of 850 kg m-3). Our findings are in accordance with previous studies indicating stable or only slightly negative glacier mass balances during recent years in the Karakoram. The high-resolution elevation changes revealed distinct patterns of mass relocation at glacier surfaces during active surge cycles. The formation of kinematic waves at quiescent surge-type glaciers could be observed and points towards future active surge behaviour. Our study reveals the potential of the TanDEM-X mission to estimate geodetic glacier mass balances, but also points to still existing uncertainties induced by the geodetic method.

The fluctuations of italian glaciers during the last century: a contribution to knowledge about alpine glacier changes

2007 ◽  
Vol 89 (3) ◽  
pp. 167-184 ◽  
Author(s):  
Michele Citterio ◽  
Guglielmina Diolaiuti ◽  
Claudio Smiraglia ◽  
Carlo D'agata ◽  
Teresa Carnielli ◽  
...  
Keyword(s):  
Alpine Glacier ◽  
Glacier Changes

scholarly journals On the characterization of glacier response by a single time-scale

2001 ◽  
Vol 47 (159) ◽  
pp. 659-664 ◽  
Author(s):  
W. D. Harrison ◽  
D. H. Elsberg ◽  
K. A. Echelmeyer ◽  
R. M. Krimmel
Keyword(s):  
Climate Change ◽  
Mass Balance ◽  
Time Constant ◽  
Time Scale ◽  
Response Models ◽  
Single Time ◽  
Glacier Changes ◽  
Major Increase ◽  
Effect Of Surface

AbstractGlacier response to climate can be characterized by a single time-scale when the glacier changes sufficiently slowly. Then the derivative of volume with respect to area defines a thickness scale similar to that of Jóhannesson and others, and the time-scale follows from it. Our version of the time-scale is different from theirs because it explicitly includes the effect of surface elevation on mass-balance rate, which can cause a major increase in the time-scale or even lead to unstable response. The time constant has a dual role, controlling both the rate and magnitude of response to a given climate change. Data from South Cascade Glacier, Washington, U.S.A., illustrate the ideas, some of the difficulty in obtaining accurate values for the thickness and time-scales, and the susceptibility of all response models to potentially large errors.

scholarly journals Glacier Changes in the West Kunlun Mountains Revealed by Landsat Data from 1994 to 2016

2017 ◽  
Vol 74 ◽  
pp. 012002
Author(s):  
J Zhang ◽  
B H Fu ◽  
L M Wang ◽  
A Maimaiti ◽  
Y X Ma ◽  
...  
Keyword(s):  
Landsat Data ◽  
The West ◽  
Kunlun Mountains ◽  
Glacier Changes ◽  
West Kunlun

Recent glacier changes and their impact on water resources in Chon and Kichi Naryn Catchments, Kyrgyz Republic

2013 ◽  
Vol 14 (3) ◽  
pp. 444-452 ◽  
Author(s):  
M. Duishonakunov ◽  
S. Imbery ◽  
C. Narama ◽  
A. Mohanty ◽  
L. King
Keyword(s):  
Water Resources ◽  
Catchment Area ◽  
Kyrgyz Republic ◽  
Mountain Ranges ◽  
Glacier Shrinkage ◽  
Mountain Glaciers ◽  
Power Stations ◽  
Glacier Changes ◽  
South Slope ◽  
Water Withdrawals

Naryn basin, which has the largest river catchment area in Kyrgyz Republic and many mountain glaciers, is a huge ‘water tower’ for Kyrgyz Republic and Uzbekistan. Thus, the behavior of its glaciers has a large impact on water resources for the arid flat plain below, providing water for residents, irrigation, and energy in Kyrgyz Republic and Central Asia. We investigated the recent glacier condition in the Naryn basin (Chon Naryn and Kichi Naryn catchments) using topographic maps of 1:25,000 scale and ALOS/AVNIR-2 satellite imagery. For the 45-year period 1965–2010, glacier area decreased by 17.4% in the Akshyirak massif, and by 20.8% in the Borkoldoy, 21.9% in the Jetim, 24.6% in the Jetimbel, 28.9% in the Naryn, 20.8% in the Sook, 20.9% in the Teskey (south-slope glaciers), and 17.8% in the Uchemchek mountain ranges. The dramatic shrinkage was greater for south-facing than for north-facing glaciers, with respective area losses of 23.6 and 19.8%. The glacier shrinkage might affect not only irrigation water withdrawals during summer but also the planning of four cascade power stations to be constructed in the Chon Naryn and Kichi Naryn catchments.

scholarly journals Longest time series of glacier mass changes in the Himalaya based on stereo imagery

2010 ◽  
Vol 4 (4) ◽  
pp. 2593-2613 ◽  
Author(s):  
T. Bolch ◽  
T. Pieczonka ◽  
D. I. Benn
Keyword(s):  
Time Series ◽  
Mass Loss ◽  
Mass Balance ◽  
Aerial Images ◽  
Glacier Mass Balance ◽  
Glacier Changes ◽  
Debris Cover ◽  
Stereo Imagery ◽  
Glacier Velocity ◽  
The Himalaya

Abstract. Mass loss of Himalayan glaciers has wide-ranging consequences such as declining water resources, sea level rise and an increasing risk of glacial lake outburst floods (GLOFs). The assessment of the regional and global impact of glacier changes in the Himalaya is, however, hampered by a lack of mass balance data for most of the range. Multi-temporal digital terrain models (DTMs) allow glacier mass balance to be calculated since the availability of stereo imagery. Here we present the longest time series of mass changes in the Himalaya and show the high value of early stereo spy imagery such as Corona (years 1962 and 1970) aerial images and recent high resolution satellite data (Cartosat-1) to calculate a time series of glacier changes south of Mt. Everest, Nepal. We reveal that the glaciers are significantly losing mass with an increasing rate since at least ~1970, despite thick debris cover. The specific mass loss is 0.32 ± 0.08 m w.e. a−1, however, not higher than the global average. The spatial patterns of surface lowering can be explained by variations in debris-cover thickness, glacier velocity, and ice melt due to exposed ice cliffs and ponds.

An update on recent glacier changes in Mexico using Sentinel-2A data

2018 ◽  
Vol 100 (3) ◽  
pp. 307-318 ◽  
Author(s):  
Bijeesh Kozhikkodan Veettil ◽  
Shanshan Wang
Keyword(s):  
Glacier Changes ◽  
Sentinel 2A
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