Aibek Merekeyev
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View article: The Impact of Climate Change on the State of Moraine Lakes in Northern Tian Shan: Case Study on Four Moraine Lakes
The Impact of Climate Change on the State of Moraine Lakes in Northern Tian Shan: Case Study on Four Moraine Lakes Open
Glacial-lake outburst floods (GLOFs) threaten more than three million residents of south-east Kazakhstan, yet quantitative data on lake growth and storage are scarce. We inventoried 154 lakes on the northern flank of the Ile-Alatau and sel…
View article: COMPARATIVE EVALUATION OF SRTM, ASTER, AIRBUS, AND ALOS DEMS FOR HYDROLOGICAL RESEARCH ACROSS DIVERSE TERRAIN TYPES
COMPARATIVE EVALUATION OF SRTM, ASTER, AIRBUS, AND ALOS DEMS FOR HYDROLOGICAL RESEARCH ACROSS DIVERSE TERRAIN TYPES Open
Digital Elevation Models (DEMs) are a key tool for hydrological modeling and water resource analysis, enabling more accurate assessment of runoff processes, precipitation distribution, and flood risks. This study presents a comparative ana…
View article: Application of Artificial Intelligence in Glacier Studies: A State-of-the-Art Review
Application of Artificial Intelligence in Glacier Studies: A State-of-the-Art Review Open
Assessing glaciers using recent and historical data and predicting the future impacts on them due to climate change are crucial for understanding global glacier mass balance, regional water resources, and downstream hydrology. Computationa…
Small lakes are important elements of the ecosystem, especially under conditions of climate change and active water use. Studying their condition is of key importance for understanding the water balance and biodiversity of the region. This study compares remote sensing techniques for small lakes using Landsat-8, Sentinel-2, Planet and unmanned aerial vehicle (UAV) data. The aim of the work is to determine the most effective approach for monitoring lake conditions by analyzing the accuracy of different methods and indices. The methods used include the analysis of multispectral data such as NDWI, MNDWI and AWEI, which allow the distinction between aquatic and non-aquatic objects. The scientific significance of the study lies in assessing the potential of modern remote sensing technologies for detailed monitoring of ecosystem changes. Practical significance of the work consists in providing recommendations for sustainable water resources management and development of adaptation strategies. The research methodology included processing satellite data of different resolutions, accuracy verification using UAV reference data, and application of spectral indices for water surface mapping. Results showed that high-resolution imagery (PlanetLab data) most closely matched field observations. The spectral indices NDWI, MNDWI and AWEI showed different accuracy depending on data characteristics and lake features. The analysis confirms the effectiveness of an integrated approach using high-resolution data and spectral indices for monitoring the condition of small lakes. The practical value of the study lies in optimizing the monitoring of water bodies and maintaining their ecological sustainability. Open
View article: STUDY OF GLACIERS USING MODERN METHODS OF REMOTE SENSING OF THE EARTH OF THE WESTERN TIEN SHAN: ARYS RIVER BASIN
STUDY OF GLACIERS USING MODERN METHODS OF REMOTE SENSING OF THE EARTH OF THE WESTERN TIEN SHAN: ARYS RIVER BASIN Open
View article: Accelerated Glacier Area Loss in the Zhetysu (Dzhungar) Alatau Range (Tien Shan) for the Period of 1956–2016
Accelerated Glacier Area Loss in the Zhetysu (Dzhungar) Alatau Range (Tien Shan) for the Period of 1956–2016 Open
An updated glacier inventory is important for understanding the current glacier dynamics in the conditions of actual accelerating glacier retreat observed around the world. Here, we present a detailed analysis of the glaciation areas of th…
View article: The First Inventory of Rock Glaciers in the Zhetysu Alatau: The Aksu and Lepsy River Basins
The First Inventory of Rock Glaciers in the Zhetysu Alatau: The Aksu and Lepsy River Basins Open
While rock glaciers (RGs) are widespread in the Zhetysu Alatau mountain range of Tien Shan (Kazakhstan), they have not yet been systematically investigated. In this study, we present the first rock glacier inventory of this region containi…
View article: Assessment of wildfire hazard on the territory of Kazakhstan using remote sensing data
Assessment of wildfire hazard on the territory of Kazakhstan using remote sensing data Open
Kazakhstan ranks 9th in terms of land area in the world, however, most of the territory is in the arid zone, which causes a high exposure to the wildfire risk. According to the Ministry of Emergency Situations, more than 14 thousand fires …