Simulating a Highly Parameterized Groundwater Model for a Tropical Eogenetic Karst Aquifer Using Physically-Based Numerical Modeling and Inverse Method     

Klaas  Dua K.S.Y.  Sudiayem  Ika  Klaas  Elkan M.E.  Klaas  Eldav C.M. 《Water Resources》2022,49(4):721-732

Water Resources - Formulation of effective water management based on the understanding of the interaction between climate and sub-surface components as well as its causative consequences to...  相似文献   

Shaking table tests of a resilient bridge system with precast reinforced concrete columns equipped with springs     

Natalia Reggiani Manzo  Michalis F. Vassiliou  Harris Mouzakis  Efstratios Badogiannis 《地震工程与结构动力学》2022,51(1):213-239

This paper presents the shake table test results of a novel system for the design of precast reinforced concrete bridges. The specimen comprises a slab and four precast columns. The connections are dry and the columns are connected to the slab by an ungrouted tendon. One of the tendon ends is anchored above the slab, in series with a stack of washer springs, while the other end is anchored at the bottom of the column. The addition of such a flexible restraining system increases the stability of the system, while keeping it relatively flexible allowing it to experience negative post-uplift stiffness. It is a form of seismic isolation. Anchoring the tendon within the column, caps the design moment of the foundation, and reduces its size. One hundred and eighty-one shake table tests were performed. The first 180 caused negligible damage to the specimen, mainly abrasion at the perimeter of the column top ends. Hence, the system proved resilient. The 181^st excitation caused collapse, because the tendons unexpectedly failed at a load less than 50% of their capacity (provided by the manufacturer), due to the failure of their end socket. This highlights the importance of properly designing the tendons. The tests were used to statistically validate a rigid body model. The model performed reasonably well never underestimating the median displacement response of the center of mass of the slab by more than 30%. However, the model cannot predict the torsion rotation of the slab that was observed in the tests and is due to imperfections.  相似文献   

Wintertime Arctic Oscillation Harbinger of Spring Floods in the Mouth Areas of the North-Eastern European Rivers     

Gorelits  O. V.  Kryjov  V. N.  Rakcheeva  E. A.  Ermakova  G. S. 《Water Resources》2022,49(5):836-844

Water Resources - Based on 1965–2020 series we have shown relationships between the features of the water runoff of the spring flood in mouths of large rivers of North-Eastern Europe and the...  相似文献   

Geographic-Hydrological Register of Deltas of Main World Rivers     

Isupova  M. V.  Mikhailova  M. V.  Dolgopolova  E. N. 《Water Resources》2022,49(5):927-940

Water Resources - River deltas which are among the most variable and vulnerable geographic objects may be considered as effective indicators of large-scale global and regional, natural and...  相似文献   

Studying Delta Dynamics by Space Photographs     

Kravtsova  V. I. 《Water Resources》2022,49(5):880-894

Water Resources - A review of the joint studies of the Chair of Land Hydrology and the Laboratory of Aerospace Methods, the Faculty of Geography, Moscow State University, on river delta dynamics...  相似文献   

Short-Term Forecast of Water Levels in Don Mouth Area Using Hydrodynamic Simulation     

Zemlyanov  I. V.  Pavlovskii  A. E.  Milyutina  I. Yu.  Gorelits  O. V.  Sapozhnikova  A. A. 《Water Resources》2022,49(5):808-819

Water Resources - The article presents the results of the test operation of a calculation–simulation complex (CSC) for level forecasting in a navigable branch in Don R. mouth area with daily...  相似文献   

Analysis of the Filling of Naturally Flowing Reservoirs for Substantiating Ways to Solve the Problems of Water Supply Security in the Republic of Crimea and City of Sevastopol     

Nikolenko  I. V.  Kopachevskii  A. M.  Karimov  E. A. 《Water Resources》2022,49(4):567-581

Water Resources - The filling of naturally flowing reservoirs in the Republic of Crimea and city of Sevastopol has been analyzed. A set of measures to solve the problems of water supply security is...  相似文献   

Current Distribution of Water and Sediment Runoff at the Parana Delta and Features of Its Water Balance     

Isupova  M. V. 《Water Resources》2022,49(5):912-919

Water Resources - The current values of the components of the water balance of the Parana delta, one of the largest deltas of South America, as well as the results of calculations of the actual...  相似文献   

Current Scientific and Applied Problems of River Mouth Hydrology     

Mikhailova  M. V. 《Water Resources》2022,49(5):753-765

Water Resources - The current state, the hydrological problems of river mouths, and the history of their studies as specific geographic objects are discussed, and the main lines and schools of...  相似文献   

A Simple Relation to Constrain Groundwater Models Using Surface Deformation     

Megan R.M. Brown  Shemin Ge  Elizabeth Screaton 《Ground water》2022,60(3):410-417

A simple relation between pore pressure change and one-dimensional surface deformation is presented. The relation is for pore pressure change in a confined aquifer that causes surface deformation. It can be applied to groundwater models of any discretization and is computationally efficient. The estimated surface deformation from model results can be compared to observed surface deformation through geodetic techniques such as Differential Interferometric Synthetic Aperture Radar. Model parameters then are constrained using the observed surface deformation. The validity of this relation is shown through constraint of model parameters for surface uplift due to pore pressure increase caused by wastewater disposal injection.  相似文献