Results 21 to 30 of about 25,989 (318)

Geostatistical interpolation by quantile kriging [PDF]

Hydrology and Earth System Sciences, 2019
The widely applied geostatistical interpolation methods of ordinary kriging (OK) or external drift kriging (EDK) interpolate the variable of interest to the unknown location, providing a linear estimator and an estimation variance as measure of ...
H. Lebrenz, H. Lebrenz, A. Bárdossy
doaj   +1 more source

Rainfall estimates from opportunistic sensors in Germany across spatio-temporal scales

Journal of Hydrology: Regional Studies, 2021
Study region: The study region is Germany and two sub-regions in Germany, i.e. the state of Rhineland-Palatinate and the city of Reutlingen.Study focus: Opportunistic rainfall sensors, namely personal weather stations and commercial microwave links ...
Maximilian Graf, Abbas El Hachem, Micha Eisele, Jochen Seidel, Christian Chwala, Harald Kunstmann, András Bárdossy   +6 more
doaj   +1 more source

Investigation of hydrological time series using copulas for detecting catchment characteristics and anthropogenic impacts [PDF]

Hydrology and Earth System Sciences, 2016
Global climate change can have impacts on characteristics of rainfall–runoff events and subsequently on the hydrological regime. Meanwhile, the catchment itself changes due to anthropogenic influences.
T. Sugimoto, A. Bárdossy, G. G. S. Pegram, J. Cullmann   +3 more
doaj   +1 more source

Probabilistic downscaling of EURO-CORDEX precipitation data for the assessment of future areal precipitation extremes for hourly to daily durations [PDF]

Hydrology and Earth System Sciences
This work presents a methodology to inspect the changing statistical properties of precipitation extremes with climate change. Data from regional climate models for the European continent (EURO-CORDEX 11) were used.
A. El Hachem, A. El Hachem, J. Seidel, A. Bárdossy   +3 more
doaj   +1 more source

Optimization of urban water pipe network design using fast-messy genetic algorithms (fmGA)

H2Open Journal, 2023
To have an efficient water distribution network, optimal design alternatives need to be identified and analysed using combined hydraulic modelling and optimization.
Berhanu Fanta Alemaw, Tshepo E. Jankie
doaj   +1 more source

Beam model for hydraulic fracturing [PDF]

Physical Review B, 1994
We investigate numerically the shape of cracks obtained in hydraulic fracturing at constant pressure using a square-lattice beam model with disorder. We consider the case in which only beams under tension can break, and discuss the conditions under which the resulting cracks may develop fractal patterns.
Tzschichholz F., Herrmann H. J., Roman H. E., Pfuff M.   +3 more
openaire   +3 more sources

Statistical analysis of sub-daily precipitation extremes in Singapore

Journal of Hydrology: Regional Studies, 2015
Study region: The study was conducted with data from the city state of Singapore, a densely populated and highly urbanized island state close to the equator.
Ferdinand Beck, András Bárdossy, Jochen Seidel, Thomas Müller, Elvira Fernandez Sanchis, Andreas Hauser   +5 more
doaj   +1 more source

A Stochastic Framework to Optimize Monitoring Strategies for Delineating Groundwater Divides

Frontiers in Earth Science, 2020
Surface-water divides can be delineated by analyzing digital elevation models. They might, however, significantly differ from groundwater divides because the groundwater surface does not necessarily follow the surface topography.
Jonas Allgeier, Ana González-Nicolás, Daniel Erdal, Daniel Erdal, Wolfgang Nowak, Olaf A. Cirpka   +5 more
doaj   +1 more source

Recent comprehensive review for extended finite element method (XFEM) based on hydraulic fracturing models for unconventional hydrocarbon reservoirs

Journal of Petroleum Exploration and Production Technology, 2020
Hydraulic fracturing has been around for several decades since 1860s. It is one of the methods used to recover unconventional gas reservoirs. Hydraulic fracturing design is a challenging task due to the reservoir heterogeneity, complicated geological ...
Belladonna Maulianda, Cindy Dhevayani Savitri, Aruvin Prakasan, Eziz Atdayev, Twon Wai Yan, Yew Kwang Yong, Khaled Abdalla Elrais, Reza Barati   +7 more
doaj   +1 more source

Definition of Spatial Copula Based Dependence Using a Family of Non‐Gaussian Spatial Random Fields

Water Resources Research, 2023
Spatial structures of natural variables are often very complex due to the different physical chemical or biological processes which contributed to the emergence of the fields. These structures often show non‐Gaussian spatial dependence.
András Bárdossy, Sebastian Hörning
doaj   +1 more source