- A - Physics of the Earth's Interior
- B - Seismology
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C - Geomagnetism
C-118, C-117, C-116, C-115, C-114, C-113, C-112, C-111, C-110, C-109, C-108, C-107, C-106, C-105, C-104, C-103, C-102, C-101, C-100, C-99, C-98, C-97, C-96, C-95, C-94, C-93, C-92, C-91, C-90, C-89, C-88, C-87, C-86, C-85, C-84, C-83, C-82, C-81, C-80, C-79, C-78, C-77, C-76, C-75, C-74, C-73, C-72, C-71, C-70, C-69, C-68, C-67, C-66, C-65, C-64, C-63, C-62, C-61, C-60, C-59, C-58, C-57, C-56, C-55, C-54, C-53, C-52, C-51, C-50, C-49, C-48, C-47, C-46, C-45, C-44, C-43, C-42, C-41, C-40, C-39, C-38, C-37, C-36, C-35, C-33, C-32, C-31, C-30, C-29, C-28, C-27, C-26, C-25, C-24, C-23, C-22, C-21, C-20, C-19, C-18, C-17, C-16, C-15, C-14, C-13, C-12, C-11, C-10, C-9, C-8, C-7, C-6, C-5, C-4, C-3, C-2, C-1
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D - Physics of the Atmosphere
D-79, D-78, D-77, D-76, D-75, D-74, D-73, D-72, D-71, D-70, D-69, D-68, D-67, D-66, D-65, D-64, D-63, D-62, D-61, D-60, D-59, D-58, D-57, D-56, D-55, D-54, D-53, D-52, D-51, D-50, D-49, D-48, D-47, D-46, D-44, D-45, D-43, D-42, D-41, D-40, D-39, D-38, D-37, D-35, D-34, D-33, D-32, D-31, D-30, D-28, D-27, D-26, D-25, D-24, D-23, D-22, D-21, D-20, D-19, D-18, D-17, D-16, D-15, D-14, D-13, D-12, D-11, D-10, D-9, D-8, D-7, D-6, D-5, D-4, D-3, D-2, D-1
- E - Hydrology
- P - Polar Research
- M - Miscellanea
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Online First
Computational Modeling for the Development of Sustainable Water-Resources Systems in Poland. US-Poland Technology Transfer Program
Volume: 387
Series: E-5
World peace can be better sustained with the accelerated transfer of technology - has been a belief at NATO, US Congress and the National Center for Hydroscience and Engineering (NCCHE) since the mid 1990's. With the support and funding from the US Congress, the NCCHE has been planning to transfer the state-of-the-art research and management tools, computational models, in the areas of water resources and environmental engineering to foreign countries. The objective of the project is to assist the researchers and engineers in those countries who plan tro speed up the development of their water resources and the improvement of their environmental quality, which shall result in the enhancement of their people's living standard, as well as desire for peace.
MONOGRAPHIC VOLUME
Foreword
Series: (E-5), 2005, pp.3-4
Abstract:
World peace can be better sustained with the accelerated transfer of technology - has been a belief at NATO, US Congress and the National Center for Hydroscience and Engineering (NCCHE) since the mid 1990's. With the support and funding from the US Congress, the NCCHE has been planning to transfer the state-of-the-art research and management tools, computational models, in the areas of water resources and environmental engineering to foreign countries. The objective of the project is to assist the researchers and engineers in those countries who plan tro speed up the development of their water resources and the improvement of their environmental quality, which shall result in the enhancement of their people's living standard, as well as desire for peace.
Preface
Series: (E-5), 2005, pp.5-6
Abstract:
This Monographic Volume is intended to present the technical findings of eight research projects supported by the US-Poland Technology Transfer Program funded by the US Agency for International Development. This Program was jointly coordinated by the National Center for Computational Hydroscience and Engineering of The University of Mississippi and the Institute of Geophysics of the Polish Academy of Sciences. The actual research work was conducted between April 2003 and September 2004, but the pre- and post-program activities covered a much longer period from 1998 to 2005.
Acknowledgments
Series: (E-5), 2005, pp.7-8
Abstract:
This Monographic Volume arose from the eight one-year projects within the US-Poland Technology Transfer Program, which was financially sponsored by the US Agency for International Development (US-AID) through the National Center for Computational Hydroscience and Engineering of the University of Mississippi (UM-NCCHE). The Technology Transfer Program allows for the transfer of computational modeling technology from UM-NCCHE to the research scientists and engineers of Polish institutions.
Opening addresses during the closing workshop September 30 - October 2, 2004, Mądralin Conference Center, Warsaw, Poland
Series: (E-5), 2005, pp.9-24
Abstract:
Recognition of hydrological processes in the Upper Narew multichannel river system and their influence on region sustainable development
Series: (E-5), 2005, pp.27-55
Abstract:
The paper provides results of research related to the influence of hydrological processes on sustainable development in the Upper Narew region. They were achieved in a multi-stage process starting from the recognition of the geometry of the river system together with the adjacent floodplain areas based on the existing maps, GPS-based map, field surveys, and monitoring of two flood waves that occurred during the realization of the project. Further steps consisted in the simulations with the use of CCHEID model and creation of respective anticipated flood area maps. This directly constitutes supplementary information and a tool for discussions with local decision makers, Board of Narew National Park, and various other stakeholders.
Forecasting of fluvial processes on the Skawa river within back-water reach of the Świnna Poręba water reservoir
Series: (E-5), 2005, pp.57-85
Abstract:
The aim of the project is to model fluvial processes along the Skawa River reach within the influence of the back-water caused by the Świnna Poręba reservoir. The study was carried out using a set of the field measurements as well as computer simulations with CCHE2D model developed by the National Center for Computational Hydroscience and Engineering (NCCHE) at the University of Mississippi.
The field measurements were realized continuously between early spring 2003 and summer 2004. The field measurements consist of: longitudinal profile of the research reach, 31 research cross-sections, sieve curves for riverbed based on 12 freezing samples and 20 sieving samples and velocity profiles (in chosen 6 cross-sections). The numerical modelling part of the project focused on the prediction of water discharge changes under different water levels in the reservoir, bed elevation changes, shear stresses pattern, and many other hydrodynamic conditions along the research reach caused by the construction of the Świnna Poręba reservoir.
Numerical results obtained from the simulations with CCHE2D were also compared with ARMOUR and TRANS software developed at the Water Engineering Department at Agricultural University of Kraków.
Application of the CCHE models for explanation of factors causing deep erosion of Vistula River bed in Warsaw
Series: (E-5), 2005, pp.87-113
Abstract:
During the last 50 years, the bed level of Vistula River in the Warsaw vicinity lowered about 2 meters. This phenomenon is observed only along the river reach which belongs to the city. The lowering of the river bed due to erosion has a negative impact on the city infrastructure, especially on the water intakes. The correct identification of the principal factors causing the river-bed erosion is vital for development of an appropriate improvement program preventing further bed lowering. Therefore, the present project is focused on the identification of factors causing fast erosion of Vistula River bed in Warsaw by using of the CCHE1D model developed by National Center for Computational Hydroscience and Engineering (NCCHE) at the University of Mississippi. This model allows simulating a dredging process in river flows. The results of numerical simulations suggest that the rapid erosion of Vistula River bed in Warsaw is the result of combined action of river channel training works and dredging of gravel and sand. About 30-40% of total lowering of the bed is caused by river training works and the rest results from dredging. The development of the detailed improvement program based on numerical simulations of river flow processes using CCHE1D is the main achievement of carried on research project.
Application of the CCHE1D model to the problem of flood control in Nysa Kłodzka reservoir system in Poland
Series: (E-5), 2005, pp.115-147
Abstract:
The paper presents the description and results of the application of CCHE1D flood routing model to the flood control problem in the system of a river with reservoirs in series. The application for Nysa Kłodzka system in Poland is presented.
The problem of flood control is very complex and requires consideration of many aspects. From the mathematical point of view, the two main problems are flood routing model in open channel and reservoirs, and the control procedure which would enable to choose the best reservoir operating strategy for the particular hydrological scenario.
In spite of a big complexity of the problem, preliminary calculations proved that it was possible to achieve the effective mathematical tool supporting decision strategy. However, only the simplified flood routing models were applied.
In the paper the results of more sophisticated flood routing model - CCHE1D - are presented. However, the experience showed that the use of such sophisticated models increases the time of calculation very strongly and the real time flood control operation - which is the essential problem in this study - becomes impossible.
The influence of river training on hydrodynamics and morphological changes in open channel flow on the example of the Lower Vistula River
Series: (E-5), 2005, pp.149-177
Abstract:
This paper presents the results of a study entitled The influence of river training on hydrodynamics and morphological changes in open channel flow - the example of the Lower Vistual River, which was carried out by the Institute of Hydro-Engineering of the Polish Academy of Sciences in Gdańsk in the years 2003-2004. This study, which comprised field measurements as well as numerical simulations using 2D and 3D models, was carried out within the framework of US-Poland Technology Transfer Project monitored by the National Center for Computational Hydroscience and Engineering at the University of Mississippi, and funded by US-AID under Award Number EEE-G-00-02-00015-00.
The study area covered the Vistula River reach from km 863 to km 869, which was trained by 61 groins located on both river banks: 22 on the left and 39 on the right. The scope of the project was divided into two parts: (1) field measurements, (2) simulation of hydrodynamics and morphological changes using NCCHE models.
Field measurements were carried out during six two/three-day campaigns in the summer of 2003. During these campaigns, velocity, suspended sediment concentration and bottom samplings were measured at ten selected cross-sections. In addition, water levels, currents, and meteorological characteristics were recorded for about two months at selected locations. Two bathymetry surveys, one at the beginning and the other at the end of summer, completed the field data collection.
Data collected in situ were used to calibrate CCHE2D and CCHE3D numerical models developed in the National Center for Computational Hydroscience and Engineering, The University of Mississippi (SA). The CCHE2D model was used to simulate both hydrodynamics and morphological changes for the entire river reach, while the simulations with the CCHE3D model focused on the details of the flow hydrodynamics in the vicinity of the training structures.
Despite some discrepancies, the conformity of the simulated and measured results is generally quite good. It can be concluded that the models reproduce correctly the general aspects of the flow field, sediment transport, and related morphological changes, and can provide invaluable insight for studying the hydrodynamics and morphology of rivers trained by groin fields.
Sediment problems of small river catchments and reservoirs in Poland
Series: (E-5), 2005, pp.179-207
Abstract:
Silting of reservoirs is one of the most important problems of hydroengineering in Poland. It is, therefore, essential to verify a tool which can predict distribution of sediment deposits along a river-reservoir system and the influence of sediment deposits on back water curve elevation. For this purpose the CCHE1D model developed by the National Center for Computational Hydroscience and Engineering, the University of Mississippi, USA, was applied and verified. The investigations were carried out for a small river of Zagożdżonka with a small reservoir "Staw Górny", which is located ca. 100 km south of Warsaw. The reservoir volume is 250,000 m3 and the reservoir watershed area is 91 km2. The volume of sediment deposit was estimated for the period of 23 years (1980-2003) based on surveys and compared with computational results obtained by using CCHE1D model. Three various transport equations i.e. Wu, Wang and Jia's, Engelund and Hansen's and SEDTRA have been applied and compared. It is found that CCHE1D model can predict the volume of deposits in the reservoir quite well when sediment transport formula of Wu et al. is used (error +5%). The pattern of sediment deposits along a river-reservoir system is better predicted when SEDTRA formula is used; however, the volume of sediment deposition in reservoir is then largely underestimated (28% error in the present case).
Recognition of hydraulic conditions in the Upper Narew river system and their influence on the wetland habitats in the river valley
Series: (E-5), 2005, pp.209-237
Abstract:
The aim of this work was to model the water management problem of the Upper Narew Valley (North East Poland), where flood control mitigation is in conflict with the protection of the wetland in the area downstream of medium sized (70x106 m3) Siemianówka Reservoir. The problems of water management in the water system of the Upper Narew are to some extent typical to those where the decision makers have to look for a compromise between the economical development and nature protection. The analysis was carried out in the general form of scenario study, which combined different hydrological conditions during the flood event with different water release policies from Siemnianówka Reservoir. The are five basic components of this system, namely: rule based model of the Siemianówka Reservoir, hydrological model of the Narewka River, hydrological model of the Orlanka River, 1D unsteady state flow routing model and GIS ARC View based platform for linking all models. The calculation results urge the water Authority to adopt the water release policy with the minimum flood protection storage, since only this policy meets the criteria of wetland protection. The zones of the valley suitable for agricultural production, and wetland protection were derived with the help of the program developed in the present study.
Immobilising of sediments in a lowland river floodplain
Series: (E-5), 2005, pp.239-260
Abstract:
The aim of this project is to use CCHE2D hydraulic model for prediction and better understanding of the sedimentation processes on a floodplain of the Pilica River. The left-bank floodplain located 4.5 km SW of Sulejów town was chosen as the study area (26.6 ha). The sedimentation process in the study area has been measured by 12 sediments traps placed at the characteristic parts of the terrain along 5 transects. Traps have been exposed in the field for about 500 days (2002.11.01-2003.07.29). CCHE2D model was used to simulate the suspended sediment transport during steady flows. At the inlet boundary concentration of uniform-sized, d50 = 2.00x10-4 m, fine sediment was varied in the range 20-35 g/m3. The simulations were made for the scenarios of natural vegetation cover and vegetation cover altered by introduction of willow plantations No. 1 (900 m2) ands No. 3 (1225 m2). The results of these two simulations are compared. The simulation results with flow stages ranging from 210 to 300 cm with 10 cm intervals have shown that the introduction of even a relatively small area of willow plantations reduce considerably the flow velocities. Sediment transport simulations were also made with flow stages of 260, 280, and 300 cm, and the computed deposited sediment quantities were compared with the sediment deposited in the sediments traps. It has been found that there is a relevant correlation between the sediments quantities deposited in the traps and those calculated by the numerical model CCHE2D. It is found that the deposited sediment quantities are weakly correlated with water depth and the bed-elevation change.