scholarly journals Analysis of Glacier Area Recession in Vodudahue River Basin and Its Relation with Climate Change

Proceedings ◽  
2019 ◽  
Vol 19 (1) ◽  
pp. 22
Author(s):  
Ramírez
Keyword(s):  
Surface Area ◽  
River Basin ◽  
Landsat Imagery ◽  
Close Relation ◽  
Temporal Analysis ◽  
Glacier Area ◽  
Climate Variations ◽  
Temperature And Precipitation ◽  
Glacier Recession ◽  
Multi Temporal

This research analyses the glacier recession in the surface area of the Vodudahue river basin glaciers located in Chile, at Comau fjord. A multi-temporal analysis was performed by utilizing Landsat imagery from 1987 to 2017 at a 10-year interval. Also, climate variations regarding temperature and precipitation provided by San Ignacio de Huinay weather station were analyzed. The results show a close relation between the glacier recession in the surface area of identified glaciers and the climate variability in recent years.

scholarly journals Remote Sensing in Predicting Development Patterns of Built-up Land

2021 ◽  
Vol 2 (2) ◽  
pp. 56-64
Author(s):  
Iqbal Eko Noviandi ◽  
Ramadhan Alvien Hanif ◽  
Hasanah Rahma Nur ◽  
Nandi
Keyword(s):  
Remote Sensing ◽  
Urban Areas ◽  
Population Growth Rate ◽  
Landsat Imagery ◽  
Temporal Analysis ◽  
West Java ◽  
Development Patterns ◽  
Human Needs ◽  
Multi Temporal ◽  
Total Growth

Indonesia is a developing country whose construction and development are centered on the island of Java, especially in West Java Province. Sukabumi City is one of the areas in West Java. The development of urban areas is expanding due to various human needs to carry out the construction of buildings. Remote sensing that can be used to store developments with multi-temporal analysis with materials is Landsat imagery from 2001 to 2020. The method used is the Normalized Difference Built-up Index (NDBI). The purpose of this study is to map the development of the built-up land from year to year and predict the following years. The results of the research on the significant changes in built-up land occurred between 2013-2020, while from 2001 to 2013 there was not much change. Based on the research results, the total growth of built-up land was 1.539% per year with a population growth rate of 1.4% per year. The results of the analysis show that the area of ​​land built in Sukabumi City in 2028 is 186,7194 km2 or has increased by 21,2808 km2 since 2020.

scholarly journals Assessment of Glacier Area Change in the Tekes River Basin, Central Tien Shan, Kazakhstan Between 1976 and 2013 Using Landsat and KH-9 Imagery

2016 ◽  
Author(s):  
Zamira Usmanova ◽  
Maria Shahgedanova ◽  
Igor Severskiy ◽  
Gennady Nosenko ◽  
Vassiliy Kapitsa
Keyword(s):  
River Basin ◽  
Tien Shan ◽  
Relative Reduction ◽  
Glacier Area ◽  
Uncertainty Of Measurement ◽  
Area Reduction ◽  
Glacier Recession ◽  
Significant Difference ◽  
Recession Rates ◽  
Northern Tien Shan

Abstract. Changes in glacierized area in the Kazakhstani sector of the Tekes River basin were assessed using Landsat and KH-9 imagery from 2013, 1992 and 1976. Between 1992 and 2013, the combined area of 118 glaciers declined from 121.4 ± 9.2 km2 to 105.0 ± 5.5 km2. The total area loss was 16.4 ± 5.9 km2 or 13.5 ± 7.5 %. The rate of area reduction was 0.78 km2 a-1 or 0.64 % a-1. This rate is lower than in other regions of northern Tien Shan because of the presence of several large glaciers in the sample. The combined glacier area in 2013 exceeds the combined glacier area reported by the RGI5.0/GAMDAM inventories for 1999–2003 by 24 % because the latter did not include glacierized areas on slopes exceeding 40° and a number of small glaciers. Changes in the recession rates between 1976, 1992 and 2013 were examined using a sub-sample of 28 glaciers which occupied 61% of the total glacierized area in 1992 and 64 % in 2013. These glaciers lost 8.3 ± 5.6 % in the 1976–1992 period, 8.4 ± 5.9 % in the 1992–2013 period and 16.0 ± 5.8 % between 1976 and 2013. The recession rates were 0.52 ± 0.35 % a-1 in 1976–1992 and 0.40 ± 0.28 % a-1 in 1992–2013 and although they appear to indicate a slow down in the glacier recession, the change in the retreat rates is within the uncertainty of measurement. The relative reduction in glacier area in the sub-sample is lower than for the basin as a whole because of a larger size of glaciers. Temperature increase was observed in all seasons reaching 0.18 °C per 10 years in summer and 0.39 °C per 10 years in autumn in the 1947–2015 period. Precipitation exhibited strong variability declining between 1952 and 1977 and then increasing until 2000s with a number of dry years in the 2010s. There was no statistically significant difference between the means of annual precipitation in the 1952–1977 and 1977–2015 periods. Combined with the nearly steady recession rates, this suggests that it is an increase in summer, late spring and early autumn temperature that drives glacier retreat.

Study of temperature and precipitation change in upstream mountain area of the Hexi inland river basin since 1960s

2012 ◽  
Vol 4 (6) ◽  
pp. 522 ◽  
Author(s):  
Lan Yong-Chao ◽  
Xiao Hong-Lang ◽  
Hu Xing-Lin ◽  
Ding Hong-Wei ◽  
Zou Song-Bing ◽  
...  
Keyword(s):  
River Basin ◽  
Precipitation Change ◽  
Mountain Area ◽  
Inland River ◽  
Temperature And Precipitation ◽  
Inland River Basin

scholarly journals High Mountain Asian glacier response to climate revealed by multi-temporal satellite observations since the 1960s

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Atanu Bhattacharya ◽  
Tobias Bolch ◽  
Kriti Mukherjee ◽  
Owen King ◽  
Brian Menounos ◽  
...  
Keyword(s):  
Mass Loss ◽  
River Flow ◽  
Tien Shan ◽  
High Mountain ◽  
Glacier Mass Balance ◽  
Temperature And Precipitation ◽  
Multi Temporal ◽  
The 1960S ◽  
Northern Tien Shan

AbstractKnowledge about the long-term response of High Mountain Asian glaciers to climatic variations is paramount because of their important role in sustaining Asian river flow. Here, a satellite-based time series of glacier mass balance for seven climatically different regions across High Mountain Asia since the 1960s shows that glacier mass loss rates have persistently increased at most sites. Regional glacier mass budgets ranged from −0.40 ± 0.07 m w.e.a−1 in Central and Northern Tien Shan to −0.06 ± 0.07 m w.e.a−1 in Eastern Pamir, with considerable temporal and spatial variability. Highest rates of mass loss occurred in Central Himalaya and Northern Tien Shan after 2015 and even in regions where glaciers were previously in balance with climate, such as Eastern Pamir, mass losses prevailed in recent years. An increase in summer temperature explains the long-term trend in mass loss and now appears to drive mass loss even in regions formerly sensitive to both temperature and precipitation.

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