Results 21 to 30 of about 8,911 (261)

Hydrological Drought Instantaneous Propagation Speed Based on the Variable Motion Relationship of Speed‐Time Process

Water Resources Research, 2018
It is difficult to predict and track the propagation of a hydrological drought because it is hard to determine its propagation speed. We propose a useful framework for calculating the hydrological drought instantaneous propagation speed which includes ...
Jiefeng Wu, Xiaohong Chen, Huaxia Yao, Zhiyong Liu, Dejian Zhang   +4 more
doaj   +1 more source

The effect of climate type on timescales of drought propagation in an ensemble of global hydrological models [PDF]

Hydrology and Earth System Sciences, 2018
Drought is a natural hazard that occurs at many temporal and spatial scales and has severe environmental and socioeconomic impacts across the globe.
A. I. Gevaert, T. I. E. Veldkamp, T. I. E. Veldkamp, P. J. Ward   +3 more
doaj   +1 more source

Long-term changes in the drought propagation characteristics in the Yangtze River Basin

Journal of Hydrology: Regional Studies
Study region: The Yangtze River Basin, crucial for China’s economy and food security, faces growing threats from severe and prolonged droughts, challenging water resources and ecosystem stability.Study focus: Although drought propagation has been widely ...
Ruiyang Hu, Shanshui Yuan, Junliang Jin, Liujun Zhu, Yi Liu   +4 more
doaj   +1 more source

Propagation Characteristics and Influencing Factors of Meteorological Drought to Soil Drought in the Upper Reaches of the Shiyang River Based on the Copula Function

Land
Drought propagation is a complex process, and understanding the propagation mechanisms of meteorological drought to soil drought is crucial for early warning, disaster prevention, and mitigation.
Junju Zhou, Anning Gou, Shizhen Xu, Yuze Wu, Xuemei Yang, Wei Wei, Guofeng Zhu, Dongxia Zhang, Peiji Shi   +8 more
doaj   +1 more source

Drought Propagation Patterns under Naturalized Condition Using Daily Hydrometeorological Data

Advances in Meteorology, 2018
Drought propagation pattern forms a basis for establishing drought monitoring and early warning. Due to its regional disparity, it is necessary and significant to investigate the pattern of drought propagation in a specific region.
Jianzhu Li, Yuangang Guo, Yixuan Wang, Shanlong Lu, Xu Chen   +4 more
doaj   +1 more source

Study on the propagation law of meteorological drought to hydrological drought under variable time Scale: An example from the Yellow River Water Supply Area in Henan

Ecological Indicators, 2023
To study the propagation law of meteorological droughts to hydrological droughts under variable time scales, and to reveal the synchronisation gap and lag time of hydrological droughts compared to meteorological droughts, and the lag degree of ...
Fang Wan, Fei Zhang, Yu Wang, Shaoming Peng, Xiaokang Zheng   +4 more
doaj   +1 more source

Drought Propagation in Brazilian Biomes Revealed by Remote Sensing

Remote Sensing, 2023
Drought events have been reported in all Brazilian regions every year, evolving slowly over time and large areas, and largely impacting agriculture, hydropower production, and water supplies. In the last two decades, major drought events have occurred over the country, such as the 2010 and 2015 events in the Amazon, the 2012 event in the Pampa, and the
Júlia Brusso Rossi, Anderson L. Ruhoff, Ayan Santos Fleischmann, Leonardo Laipelt   +3 more
openaire   +2 more sources

Dynamic analysis of drought propagation in the context of climate change and watershed characterization: a quantitative study based on GAMLSS and Copula models [PDF]

Natural Hazards and Earth System Sciences
Investigating the processes governing drought propagation under a changing environment is essential for advancing drought early warning and reducing socio-economic risks.
M. Li, M. Li, Z. Feng, M. Zhang, L. Shi, Y. Yao   +5 more
doaj   +1 more source

Dynamics of hydrological droughts propagation in mountainous catchments

Miscellanea Geographica, 2022
Abstract In the study, hydrological drought was identified assuming that the occurrence of river low-flow is a symptom of drought, and is also a good estimator of its progress. The research was conducted in the upper Dunajec river catchment, for which a series of daily discharges from 20 gauging stations during the period 1989–2018 ...
Malwina Kozek, Edmund Tomaszewski
openaire   +2 more sources

Initial soil moisture conditions dominate variation in event-scale propagation time from meteorological to agricultural drought

Agricultural Water Management
Agricultural drought, typically triggered by meteorological drought, poses a significant threat to crop production and regional water resources. Understanding the propagation from meteorological to agricultural drought is therefore crucial for improving ...
Zhengguang Xu, Bo Jiang, Xiao Guo, Zhiyong Wu, Siqi Fan   +4 more
doaj   +1 more source