نتایج جستجو برای: meteorological drought and karoon3 basin
تعداد نتایج: 16850403 فیلتر نتایج به سال:
Water resources, land and soil degradation, desertification, agricultural productivity, food security are all adversely influenced by drought. The prediction of meteorological droughts using the standardized precipitation index (SPI) is crucial for water resource management. modeling results SPI at 3, 6, 9, 12 months based on five types machine learning: support vector (SVM), additive regressio...
Drought is a common and greatly influential natural disaster, yet its reliable estimation prediction remain challenge. The object of this paper to investigate the spatiotemporal evolution drought in Yangtze River basin. multi-time scale characteristics were analyzed based on 19 models 3 emission scenarios CMIP6. results show that CMIP6 model generally has moisture deviation basin, but accuracy ...
پایش زمانی و مکانی خشکسالی کشاورزی با استفاده از دادههای سنجش از دور مورد مطالعه: استان مرکزی ایران
As a result of climate change and reduction in rainfall during the last decade, drought has become big problem in the world, especially in arid and semi-arid areas such as Iran. Therefore drought monitoring and management is great of important. In contrast with the traditional methods which are based on the ground stations measurements and meteorological drought monitoring, using the remote sen...
In recent decades, water scarcity has become a global problem due to the growth of the world's population as well as the increase in per capita water consumption. Therefore, planning and managing water resources to prevent potential risks such as floods and drought in the future is one of the important measures of water resources management. One of the important measures to avoid potential risk...
Hazard is potential source of harm or a situation to create a damage. So identification of zones exposed to hazards is necessary for planning or land use planning. But this situation becomes more critical when they appear at the population centers. So applying the principle of passive defense based on environmental capabilities is unarmed action that caused the reduction of human resources vuln...
Monitoring of Meteorological and groundwater droughts and determining of the lag time between these two types of droughts in spatial various locations can help in consumption management and protection of the groundwater resources. In this study, spatial and temporal changes of droughts were analyzed using the Standard Precipitation and Groundwater Resource Indices (SPI & GRI) in the northern Ma...
Revealing the impact of future climate change on characteristics and evolutionary patterns meteorological hydrological droughts exploring joint distribution their drought are essential for early warning in basin. In this study, we considered Jinghe River Basin Loess Plateau as research object. The standardized precipitation index (SPI) runoff (SRI) series were used to represent with monthly gen...
Abstract The evolution of meteorological drought under global warming is great significance to risk management. Meanwhile, driving factors that influence hydrological and water cycle processes play an important role in assessment. Hun-Taizi River basin (HTRB) a region seriously troubled by China. Therefore, we reveal the characteristics its factors. First, standardized precipitation index (SPI)...
Drought progresses more slowly than other natural disasters and is noticed late. It starts with decreasing precipitation affects all human activities. Considering the effects of increasing climate change past droughts, it certain that drought will be inevitable in future. Until now, many countries have experienced drought, including Turkey. Several publications appeared recent years documenting...
Hydrological drought refers to a persistently low discharge and volume of water in streams and reservoirs, lasting months or years. Hydrological drought is a natural phenomenon, but it may be exacerbated by human activities. Hydrological droughts are usually related to meteorological droughts, and their recurrence interval varies accordingly. This study pursues to identify a stochastic model (o...
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