Dike-pond is a unique agricultural landscape type in the Pearl River Delta region of China, which has significance for maintenance ecological balance. In recent years, urbanization China developed rapidly, and dike-ponds have been extensively occupied, reducing their regulation ability threatening regional security. Taking Shunde District Foshan as an example, based on remote sensing images fro...

INTRODUCTION Large-scale coastal development for land reclamation has been carried out on the Saemangeum coast of the southwestern part of the Korean peninsula by constructing a 33 km-long sea dike since 1991. This type of construction has an effect upon both the coastal morphology and tidal systems. After construction of the dike, changes in both tides and tidal currents have occured. The weak...

After the flood disaster in 1953 in the southwestern part of the Netherlands, Van Dantzig tried to solve the economic decision problem concerning the optimal height of dikes. His solution has a fixed probability of flooding after each investment. However, when there is economic growth, not the probability of flooding but the expected yearly loss by flooding is the key variable in the real optim...

Decision support systems (DSSs) are increasingly being used in water management for the evaluation of impacts of policy measures under different scenarios. The exact impacts generally are unknown and surrounded with considerable uncertainties. These uncertainties stem from natural randomness, uncertainty in data, models and parameters, and uncertainty about measures and scenarios. It may theref...

application of structures of flow pattern modification is one of the erosion control methods in bends. triangular vanes are among these structures which provide less scour depth compared to the other techniques such as spur dike. since little information on erosion and sedimentation pattern around triangular vanes are available, this study was conducted to study the effect of structure effectiv...

The Sonju Lake intrusion (SLI) is a 1200-m-thick, shallow-dipping, sheet-like intrusion that forms part of the Beaver Bay Complex (RI-58, Chapter 7). Although its exposed strike-length is only about 3 km (Fig. 3-1), the SLI has a distinctive aeromagnetic signature that can be traced for at least 20 km beneath a cover of glacial drift. The nearly constant width of its aeromagnetic anomaly sugges...