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Data Assimilation in a Simple Tropical Ocean Model with Wind Stress Errors
Publisher: American Meteorological Society
Abstract: A major error source in the numerical simulation of tropical oceans is the uncertainty in wind stress forcing. A reduced-gravity shallow-water model has been used to test how assimilated ocean data correct simulation errors ...
Combined Thermal-Hydraulic-Mechanical Frost Heave Model Based on Takashi’s Equation
Publisher: American Society of Civil Engineers
Abstract: The purpose of this study is to establish a numerical simulation model that addresses the combined thermal-hydraulic-mechanical process of frost heave. Of the several practical frost heave estimation theories, the authors ...
Mechanism of Radial Stress in the Freezing Direction Produced by Non-Frost-Susceptible Materials
Publisher: ASCE
Abstract: Radial stress produced by the freezing of soil mainly results from two parts: the segregated ice lens and the in situ freezing of pore water. However, most studies concentrate on the stress of freezing direction, but little ...
How the Cooperation between Reservoir Operation and Unit Commitment Can Reduce Scheduled Spillages
Publisher: ASCE
Abstract: Units in a hydroplant are usually committed after the operational results are derived for multiple cascaded reservoirs. Such a procedure may make hydro units difficult to harmonize their constraints (e.g., allowable ...
Nonlinear Tropical Air–Sea Interaction in the Fast-Wave Limit
Publisher: American Meteorological Society
Abstract: The fast-wave limit is an approximation useful for understanding many aspects of tropical air?sea interaction. It is obtained when the time scale of dynamical adjustment of the ocean by equatorial waves occurs fast compared ...
Data Assimilation for a Coupled Ocean–Atmosphere Model. Part I: Sequential State Estimation
Publisher: American Meteorological Society
Abstract: The assimilation problem for the coupled ocean?atmosphere system in the tropical Pacific is investigated using an advanced sequential estimator, the extended Kalman filter (EKF). The intermediate coupled model used in this ...
Flow Constrictions and Fish Behavior: Unraveling Undulatory Swimming Strategies in Accelerating Flow
Publisher: American Society of Civil Engineers
Abstract: Section contractions in rivers often induce accelerated flows in nature, exerting substantial influence on the swimming behaviors of various fish species. This study focuses on the undulatory swimming strategies of fishes ...