نتایج جستجو برای: short duration rainfall
تعداد نتایج: 648020 فیلتر نتایج به سال:
In water-limited regions, rainfall interception is influenced by rainfall properties and crown characteristics. Rainfall properties, aside from gross rainfall amount and duration (GR and RD), maximum rainfall intensity and rainless gap (RG), within rain events may heavily affect throughfall and interception by plants. From 2004 to 2014 (except for 2007), individual shrubs of Caragana korshinski...
Two important applications of rainfall-runoff models are forecasting and simulation. At present, rainfall-runoff models based on artificial intelligence methods are built basically for short-term forecasting purposes and these models are not very effective for simulation purposes. This study explores the applicability and effectiveness of adaptive neuro-fuzzy-system-based rainfall-runoff models...
Water quality impacts due to non-point source pollution can be significant particularly in environmentally sensitive areas. They may, however, be difficult to quantify, since the magnitude is heavily influenced by climatic, geomorphologic, lithologic and pedologic characteristics. A conceptual model for continuous daily simulation is proposed to reproduce the quali-quantitative response of a Si...
On many volcanoes, there is evidence of a relationship between dome collapse and periods of high precipitation. We propose a mechanism for this relationship and investigate the conditions that optimize failure by this process. Observations of elongate lobes that evolve through exogenous growth of lava domes reveal that they commonly develop tensile fractures perpendicular to the direction of mo...
Spatial and temporal rainfall variability analysis at a basin scale is essential to understand water availability for sustainable resource management. This study investigated the spatial distribution trend in Tekeze river using daily data collected from 43 meteorological stations with records 1960 2019. Coefficient of variation, seasonality index (SI) were used evaluate monthly, seasonal annual...
Hysteresis patterns of different sediment particle sizes were studied via a detailed laboratory study and modelling. Seven continuous rainfall events with stepwisevarying rainfall intensities (15, 30, 45, 60, 45, 30 and 15 mmh-1, each 20 min duration) were conducted using a 5-m× 2-m erosion flume. Flow rates and sediment concentration data were measured using flume discharge samples, and interp...
The effect of preferential flow on the stability of landslides is studied through numerical simulation of two types of rainfall events on a hypothetical hillslope. A model is developed that consists of two parts. The first part is a model for combined saturated/unsaturated subsurface flow and is used to compute the spatial and temporal water pressure response to rainfall. Preferential flow is s...
We explore the characteristics of 96,190 wet events (WEs) defined as consecutive 3-hourly rainfall ≥ 1 mm/3 hr from a network 34 stations across Bangladesh. Nearly 60% (5%) WEs last ≤ 3 (≥ 15) hr. The are dynamically clustered into four “canonical” storm types (STs), mostly discretized by their duration, but also mean and maximal intensity. While durations, total amounts contiguous areas positi...
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