Reconstructing the aeolian processes in Daurian steppes during arid phases of morphogenesis

Баженова, О.И.; Кобылкин, Д. В.; Makarov, S. A.; Rogaleva, N. N.; Силаев, А. В.; Cherkashina, A. A.

doi:10.1134/s1875372815030099

Cited by 6 publications

(4 citation statements)

References 9 publications

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“…In the southeastern Transbaikalia in the spurs of the Nerchinskii Ridge, weak deflation is observed on gentle windward slopes. Its value is 0.01-0.05 mm per year; moderate deflation at a rate of 0.1-1.5 mm per year is typical for the middle part slopes, ablation from the upper steeper sections of the slopes increases to 2.2-2.6 mm per year [8]. The volume of the aeolian material carried out from the apical surfaces can make a denudation layer of 3-5 mm, reaching sometimes 10 mm per year [9].…”

Section: Intensity Of Aeolian Migration Of Mattermentioning

confidence: 96%

“…In the valleys of the rivers in areas located above wind corridors, where the speed of wind flows sharply decreases and aeolian accumulation is noted, the tracts of aeolian sands are recorded. The effect of aeolian processes on the morphology of the relief of the Daurian region especially increases in extremely dry arid phases of relief-formation cycles [8]. In the river valleys drained sections of the channels, low and high floodplains, the first terrace above the floodplain, sandy plains of the middle course of the Onon river are exposed to intense blowing.…”

Section: Aeolian Processes and Geomorphologymentioning

confidence: 99%

“…Deflation considerably flattens the drained low shores of the Torei Lakes and carries out lake sediments from the central parts of the lake basins. Drift sands are formed in the coastal zone [7][8][9].…”

Section: Aeolian Processes and Geomorphologymentioning

confidence: 99%

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Aeolian Material Migration in Transbaikalia (Asian Russia)

2019

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We revealed regional features of functioning of a large Transbaikalian aeolian morphodynamic system. Natural pre-conditions, current realities and factors of development of aeolian processes are investigated. The paper considers regularities of spatial distribution of deflation, transit, and aeolian accumulation zones. Main directions of aeolian migration of matter are determined. Pulsating nature of aeolian processes development in Holocene has been established. Identified are intrasecular cycles and Holocene dynamics of aeolian processes. We identified intrasecular (11, 27–35 years old), secular (80 year old) and Holocene (500, 2000 year old) cycles of aeolian process dynamics. The paper shows the influence of anthropogenic activity on the activation of aeolian migration of material for the historical period. It presents an overview of extreme aeolian events. Regionalization of Transbaikalia was carried out according to the degree of probable desertification of the territory due to development of aeolian processes. Areas of catastrophic manifestation of processes are highlighted. The results of long-term experimental observations of deflation and aeolian accumulation are presented. Particular attention is paid to the characteristics of the aeolian corridors. The important role of aeolian processes in the intensive material transport from Transbaikalia to the south and southeast to neighboring regions of Mongolia and China is shown.

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Section: Intensity Of Aeolian Migration Of Mattermentioning

confidence: 96%

Section: Aeolian Processes and Geomorphologymentioning

confidence: 99%

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Aeolian Material Migration in Transbaikalia (Asian Russia)

2019

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“…The objects of the study are the lakes located on the Daur steppe in Russian part. Geographically, this territory occupies the Onon-Torei high plain [19]. The average height of the relief of the study area is 600-800 m. [20].…”

Section: Introductionmentioning

confidence: 99%

Climatogenic Dynamics of Lakes in the Russian Part of Daur Steppe According to Earth's Remote Sensing Data

Vakhnina¹,

Goliatina²,

Noskova³

2019

Proceedings of the International Symposium "Engineering and Earth Sciences: Applied and Fundamental Research" Dedicated to the

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The use of Earth's remote sensing methods is one of the effective methods of monitoring. It allows estimating the areas of the water line of lakes and their quantity over vast and inaccessible territories. An analysis of the dynamics of basinal lakes in the Daurian steppe Russian part from 1989 to 2016, performed using a modified normalized differential water index MNDWI, showed that the maximum number of lakes was observed in 1992 (1245 pcs.) with a total area of water surfaces amounted to 1088 km 2. Both indicators reached the lowest point in 2016, while the total area of lakes decreased by more than 70% towards the maximum and amounted to 319.4 km 2 , and their number had fallen by 10 times. The revealed changes resulted from the climatic factors influence. This proves by significant correlations between the characteristics of lakes and meteorological parameters.

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