Hydrology and Earth System Sciences
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Evaluation of artificial neural network techniques for flow forecasting in the River Yangtze, ChinaAbstract. While engineers have been quantifying rainfall-runoff processes since the mid-19th century, it is only in the last decade that artificial neural network models have been applied to the same task. This paper evaluates two neural networks in this context: the popular multilayer perceptron (MLP), and the radial basis function network (RBF). Using six-hourly rainfall-runoff data for ... ... hiện toàn bộ
Hydrology and Earth System Sciences - Tập 6 Số 4 - Trang 619-626
Extreme flood response to short-duration convective rainfall in South-West GermanyAbstract. The 2 June 2008 flood-producing storm on the Starzel river basin in South-West Germany is examined as a prototype for organized convective systems that dominate the upper tail of the precipitation frequency distribution and are likely responsible for the flash flood peaks in Central Europe. The availability of high-resolution rainfall estimates from radar observations and a rain ... ... hiện toàn bộ
Hydrology and Earth System Sciences - Tập 16 Số 5 - Trang 1543-1559
Attributing regional trends of evapotranspiration and gross primary productivity with remote sensing: a case study in the North China PlainAbstract. Attributing changes in evapotranspiration (ET) and gross primary productivity (GPP) is crucial for impact and adaptation assessment of the agro-ecosystems to climate change. Simulations with the VIP model revealed that annual ET and GPP slightly increased from 1981 to 2013 over the North China Plain. The tendencies of both ET and GPP were upward in the spring season, while they w... ... hiện toàn bộ
Hydrology and Earth System Sciences - Tập 21 Số 1 - Trang 295-310
Survival of the Qaidam mega-lake system under mid-Pliocene climates and its restoration under future climatesAbstract. The Qaidam Basin in the north of the Tibetan Plateau has undergone drastic environmental changes during the last millions of years. During the Pliocene, the Qaidam Basin contained a freshwater mega-lake system although the surrounding regions showed increasingly arid climates. With the onset of the Pleistocene glaciations, lakes began to shrink and finally disappeared almost comp... ... hiện toàn bộ
Hydrology and Earth System Sciences - Tập 24 Số 7 - Trang 3835-3850
Sedimentation in the Three Gorges Dam and the future trend of Changjiang (Yangtze River) sediment flux to the seaAbstract. The Three Gorges Dam (TGD) on the upper Changjiang (Yangtze River), China, disrupts the continuity of Changjiang sediment delivery to downstream and coastal areas. In this study, which was based on 54 years of annual water and sediment data from the mainstream and major tributaries of Changjiang, sediment deposition induced by the TGD in 2003–2008 was quantified. Furthermore, we ... ... hiện toàn bộ
Hydrology and Earth System Sciences - Tập 13 Số 11 - Trang 2253-2264
Analyzing streamflow changes: irrigation-enhanced interaction between aquifer and streamflow in the Republican River basinAbstract. Groundwater-fed irrigation has altered surface and groundwater interactions in the Republic River basin (RRB) in the midwestern United States, where agriculture heavily depends on irrigation. The decreasing flow trend recorded at the RRB gauging station since the 1950s reflects the synthetical effect of dynamic interactions between surface water and groundwater systems, which has... ... hiện toàn bộ
Hydrology and Earth System Sciences - Tập 18 Số 2 - Trang 493-502
A worldwide analysis of trends in water-balance evapotranspirationAbstract. Climate change is expected to alter the global hydrological cycle, with inevitable consequences for freshwater availability to people and ecosystems. But the attribution of recent trends in the terrestrial water balance remains disputed. This study attempts to account statistically for both trends and interannual variability in water-balance evapotranspiration (ET), estimated fro... ... hiện toàn bộ
Hydrology and Earth System Sciences - Tập 17 Số 10 - Trang 4177-4187
Strong increases in flood frequency and discharge of the River Meuse over the late Holocene: impacts of long-term anthropogenic land use change and climate variabilityAbstract. In recent years the frequency of high-flow events on the Meuse (northwest Europe) has been relatively great, and flooding has become a major research theme. To date, research has focused on observed discharge records of the last century and simulations of the coming century. However, it is difficult to delineate changes caused by human activities (land use change and greenhouse g... ... hiện toàn bộ
Hydrology and Earth System Sciences - Tập 12 Số 1 - Trang 159-175
Geostatistical radar-raingauge combination with nonparametric correlograms: methodological considerations and application in SwitzerlandAbstract. Modelling spatial covariance is an essential part of all geostatistical methods. Traditionally, parametric semivariogram models are fit from available data. More recently, it has been suggested to use nonparametric correlograms obtained from spatially complete data fields. Here, both estimation techniques are compared. Nonparametric correlograms are shown to have a substantial ne... ... hiện toàn bộ
Hydrology and Earth System Sciences - Tập 15 Số 5 - Trang 1515-1536
Evaluation of radar-gauge merging methods for quantitative precipitation estimatesAbstract. Accurate quantitative precipitation estimates are of crucial importance for hydrological studies and applications. When spatial precipitation fields are required, rain gauge measurements are often combined with weather radar observations. In this paper, we evaluate several radar-gauge merging methods with various degrees of complexity: from mean field bias correction to geostatis... ... hiện toàn bộ
Hydrology and Earth System Sciences - Tập 13 Số 2 - Trang 195-203
Tổng số: 157
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