scholarly journals Morphometric Controls on Glacier Mass Balance of the Puruogangri Ice Field, Central Tibetan Plateau

Water ◽  
2016 ◽  
Vol 8 (11) ◽  
pp. 496 ◽  
Author(s):  
Lin Liu ◽  
Liming Jiang ◽  
Yafei Sun ◽  
Hansheng Wang ◽  
Chaolu Yi ◽  
...  
Keyword(s):  
Tibetan Plateau ◽  
Mass Balance ◽  
Glacier Mass Balance ◽  
Central Tibetan Plateau ◽  
Ice Field

scholarly journals Mass balance of Xiao Dongkemadi glacier on the central Tibetan Plateau from 1989 to 1995

2000 ◽  
Vol 31 ◽  
pp. 159-163 ◽  
Author(s):  
Koji Fujita ◽  
Yutaka Ageta ◽  
Pu Jianchen ◽  
Yao Tandong
Keyword(s):  
Body Temperature ◽  
Tibetan Plateau ◽  
Mass Balance ◽  
Air Temperature ◽  
Black Body ◽  
Glacier Mass Balance ◽  
The Tibetan Plateau ◽  
Central Tibetan Plateau ◽  
Geostationary Meteorological Satellite ◽  
Continuous Mass

AbstractData on the mass balance of Xiao Dongkemadi glacier in the Tanggula mountains, central Tibetan Plateau, were obtained over 5 5 years from 1989 to 1995. These are the first continuous mass-balance data for a continental-type glacier on the Tibetan Plateau, where the glacier accumulates during the summer monsoon (summer-accumulation-type glacier). Mass-balance vs altitude profiles were steeper in the negative than in the positive mass-balance years. This is considered to have resulted from the effect of summer accumulation. The annual mass balance is compared with air temperature, precipitation, and black-body temperature in the area including the glacier, which is calculated from infrared radiation observations by theJapanese Geostationary Meteorological Satellite. It was found that the interannual variation in the glacier mass balance was not closely related to maximum monthly mean air temperature, while it did have a relatively good correlation with maximum monthly mean black-body temperature.

scholarly journals Superimposed ice in glacier mass balance on the Tibetan Plateau

1996 ◽  
Vol 42 (142) ◽  
pp. 454-460 ◽  
Author(s):  
Koji Fujita ◽  
Katsumoto Seko ◽  
Yutaka Ageta ◽  
Pu Jianchen ◽  
Yao Tandong
Keyword(s):  
Tibetan Plateau ◽  
Mass Balance ◽  
Ice Formation ◽  
Glacier Mass Balance ◽  
The Tibetan Plateau ◽  
Snow Layer ◽  
Glacier Surface ◽  
Accumulation Zone ◽  
Central Tibetan Plateau ◽  
Glacier Ice

AbstractThe relations between mass balance and meltwater refreezing were examined on the basis of glaciological observations carried out in summer 1993 on Xiao Dongkemadi Glacier, Tanggula Mountains, central Tibetan Plateau. On this glacier, a part of meltwaler refreezes at the snow/ice interface as superimposed ice. The amount of superimposed ice formation was determined by both meltwater supply and temperature condition of the glacier. Snow-layer thickness on the glacier ice body is less than 2 m, even in the higher accumulation zone. About 60% of meltwaler generated in the accumulation zone for the period May–September was trapped at the snow/ice interface by refreezing, and was not discharged out of the glacier. About 26% of accumulated snow to the glacier surface was replaced on the snow/ice interface by refreezing in the accumulation zone. These facts indicate that superimposed ice formation is quite significant for water retention in glaciers under low-precipitation conditions.

scholarly journals Surface Albedo Variation and Its Influencing Factors over Dongkemadi Glacier, Central Tibetan Plateau

2015 ◽  
Vol 2015 ◽  
pp. 1-10 ◽  
Author(s):  
Jie Wang ◽  
Yuhuan Cui ◽  
Xiaobo He ◽  
Jian Zhang ◽  
Shijiang Yan
Keyword(s):  
Tibetan Plateau ◽  
Mass Balance ◽  
Critical Role ◽  
Influence Factors ◽  
Field Measurements ◽  
Spatiotemporal Variability ◽  
Glacier Mass Balance ◽  
Temperature And Precipitation ◽  
Central Tibetan Plateau ◽  
The Relationship

Glacier albedo plays a critical role in surface-atmosphere energy exchange, the variability of which influences glacier mass balance as well as water resources. Dongkemadi glacier in central Tibetan Plateau was selected as study area; this research used field measurements to verify Landsat TM-derived albedo and MOD10A1 albedo product and then analyzed the spatiotemporal variability of albedo over the glacier according to them, as well as its influence factors and the relationship with glacier mass balance. The spatial distribution of glacier albedo in winter did not vary with altitude and was determined by terrain shield, whereas, in summer, albedo increased with altitude and was only influenced by terrain shield at accumulation zone. During 2000–2009, albedo in summer decreased at a rate of 0.0052 per year and was influenced by air temperature and precipitation levels, whereas albedo in winter increased at a rate of 0.0045 per year, influenced by the level and frequency of precipitation. The annual variation of albedo in summer during 2000–2012 has the high relative to that of glacier mass balance measurement, which indicates that glacier albedo in the ablation period can be considered as a proxy for glacier mass balance.

scholarly journals A Surging Glacier Recognized by Remote Sensing on the Zangser Kangri Ice Field, Central Tibetan Plateau

2021 ◽  
Vol 13 (6) ◽  
pp. 1220
Author(s):  
Bowen Jia ◽  
Shugui Hou ◽  
Yetang Wang
Keyword(s):  
Tibetan Plateau ◽  
Mass Balance ◽  
Thermal Emission ◽  
Surface Velocity ◽  
High Mountain ◽  
Glacier Mass Balance ◽  
Landsat 8 ◽  
The Tibetan Plateau ◽  
Landsat Images ◽  
Ice Field

A glacier surge, which is quasi-periodic and involves rapid flow, is an abnormal glacier motion. Although some glaciers have been found to be surging, little is known about surging glaciers on the Tibetan Plateau (TP), especially the Central and Northern TP. Here, we found a surging glacier (GLIMS ID: G085885E34389N) on the Zangser Kangri ice field (ZK), Central TP, by means of the digital elevation models (DEMs) from the Shuttle Radar Topography Mission (SRTM), TanDEM-X 90 m, Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) DEMs, and High Mountain Asia 8-m DEM (HMA), combined with Landsat images and the Global Land Ice Velocity Extraction from Landsat 8 (GoLIVE) dataset. This surge event was confirmed by the crevasses, shear margin, and visible advancing snout shown in the Landsat images produced since 2014 and the HMA. The inter-comparison of these DEMs and the surface velocity changes showed that the surge event started between October 2012 and January 2014. The glacier may have also surged in the 1970s, based on a comparison between the topographical map and Landsat images. The glacier mass balance here has been slightly positive from 1999 onward (+0.03 ± 0.06 m w.e.a−1 from 1999 to 2015, +0.02 ± 0.07 m w.e.a−1 from 1999 to December 2011), which may indicate that the ZK is located on the southern edge of the mass balance anomaly on the TP. Combining with other surging glaciers on the Central and Northern TP, the relatively balanced mass condition, large size, and shallow slope can be associated with glacier surges on the Central and Northern TP.

scholarly journals Superimposed ice in glacier mass balance on the Tibetan Plateau

1996 ◽  
Vol 42 (142) ◽  
pp. 454-460 ◽  
Author(s):  
Koji Fujita ◽  
Katsumoto Seko ◽  
Yutaka Ageta ◽  
Pu Jianchen ◽  
Yao Tandong
Keyword(s):  
Tibetan Plateau ◽  
Mass Balance ◽  
Ice Formation ◽  
Glacier Mass Balance ◽  
The Tibetan Plateau ◽  
Snow Layer ◽  
Glacier Surface ◽  
Accumulation Zone ◽  
Central Tibetan Plateau ◽  
Glacier Ice

AbstractThe relations between mass balance and meltwater refreezing were examined on the basis of glaciological observations carried out in summer 1993 on Xiao Dongkemadi Glacier, Tanggula Mountains, central Tibetan Plateau. On this glacier, a part of meltwaler refreezes at the snow/ice interface as superimposed ice. The amount of superimposed ice formation was determined by both meltwater supply and temperature condition of the glacier. Snow-layer thickness on the glacier ice body is less than 2 m, even in the higher accumulation zone. About 60% of meltwaler generated in the accumulation zone for the period May–September was trapped at the snow/ice interface by refreezing, and was not discharged out of the glacier. About 26% of accumulated snow to the glacier surface was replaced on the snow/ice interface by refreezing in the accumulation zone. These facts indicate that superimposed ice formation is quite significant for water retention in glaciers under low-precipitation conditions.

scholarly journals Impact of glacier shape on the mass balance changes: A case study of Dongkemadi region, central Tibetan Plateau

2020 ◽  
Vol 11 (1) ◽  
pp. 22-30
Author(s):  
An-An Chen ◽  
Ning-Lian Wang ◽  
Yu-Wei Wu ◽  
Quan Zhang ◽  
Zhong-Ming Guo
Keyword(s):  
Tibetan Plateau ◽  
Mass Balance ◽  
Central Tibetan Plateau

scholarly journals Variations in water level and glacier mass balance in Nam Co lake, Nyainqentanglha range, Tibetan Plateau, based on ICESat data for 2003-09

2014 ◽  
Vol 55 (66) ◽  
pp. 239-247 ◽  
Author(s):  
Hongbo Wu ◽  
Ninglian Wang ◽  
Xi Jiang ◽  
Zhongming Guo
Keyword(s):  
Tibetan Plateau ◽  
Mass Balance ◽  
Water Level ◽  
Lake Level ◽  
Altimeter Data ◽  
Glacier Mass Balance ◽  
Lake Area ◽  
Nam Co ◽  
Glacier Meltwater ◽  
Nam Co Lake

AbstractWater level fluctuations of inland lakes are related to regional-scale climate changes, and reflect variations in evaporation, precipitation and glacier meltwater flowing into the lake area in its catchment. In this paper, Ice, Cloud and land Elevation Satellite (ICESat) altimeter data and Landsat imagery (2002-09) are used to estimate Nam Co lake (Nyainqentanglha range, Tibetan Plateau) water elevation changes during 2002-09. In 2003 Nam Co lake covered an area of ~1998.8 ± 4.2 km2 and was situated at 4723 m a.s.l. Over such inland water bodies, ICESat altimeter data offer both wide coverage and spatial and temporal accuracy. We combine remote-sensing and GIS technology to map and reconstruct lake area and increased volume changes during a 7 year time series. Nam Co lake water level increased by 2.4±0.12m (0.33ma–1) between 23 February 2003 and 1 October 2009, and lake volume increased by 4.9 ±0.5 km3. In the past 7 years, Nam Co lake area has increased from 1998.78 ±5.4 to 2023.8 ±3.4 km2, the glacier-covered area has decreased from 832.34 to 821.0 km2 and the drainage basin area has decreased from 201.1 ±4.2 to 196.1 ±2.3 km2. However, the most spectacular feature is the continual water level rise from 2003 to 2009 without an obvious associated increase in precipitation. Based on digital elevation models (DEMs) from Shuttle Radar Topography Mission (SRTM) DEM data and corrected ICESat elevation data, significant changes to glacier mass balance in the western Nyainqentanglha mountains are indicated. Nyainqentanglha mountain glacier surface elevations decreased by 8.39 ± 0.45 m during 2003-09. Over the same period, at least 1.01 km3 of glacial meltwater flowed into Nam Co lake, assuming a glacial runoff coefficient of 0.6. The mean glacier mass-balance value is -490mmw.e. over the corresponding period, indicating that glacier meltwater in the catchment contributes to lake level rise. The contribution rate of glacial meltwater to lake water volume rise is 20.75%. The temporal lake level fluctuation correlates with temperature variations over the same time span.

scholarly journals Precipitation record since AD 1600 from ice cores on the central Tibetan Plateau

2008 ◽  
Vol 4 (3) ◽  
pp. 175-180 ◽  
Author(s):  
T. Yao ◽  
K. Duan ◽  
B. Xu ◽  
N. Wang ◽  
X. Guo ◽  
...  
Keyword(s):  
Tibetan Plateau ◽  
Ice Core ◽  
Ice Cores ◽  
The North ◽  
Northern Tibetan Plateau ◽  
Central Tibetan Plateau ◽  
Precipitation Record ◽  
Ice Field ◽  
The 19Th Century

Abstract. Lack of reliable long-term precipitation record from the northern Tibetan Plateau has constrained our understanding of precipitation variations in this region. We drilled an ice core on the Puruogangri Ice Field in the central Tibetan Plateau in 2000 to reveal the precipitation variations. The well dated part of the core extends back to AD 1600, allowing us to construct a 400-year annual accumulation record. This record shows that the central Tibetan plateau experienced a drier period with an average annual precipitation of ~300 mm in the 19th century, compared to ~450 mm in the wetter periods during 1700–1780 and the 20th century. This pattern agrees with precipitation reconstructions from the Dunde and Guliya ice cores on the northern Plateau but differs from that found in the Dasuopu ice cores from the southern Plateau The north-south contrasts in precipitation reconstruction reveals difference in moisture origin between the south Tibetan Plateau dominated by the Asian monsoon and the north Tibetan Plateau dominated by the continental recycling and the westerlies.

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