Abstract: Disclosed are an automatic stable posture seabed base and a releasing method, belonging to the technical field of ocean observation. The automatic stable posture seabed base includes an accommodating body with an inner cavity for accommodating the first observation device and a seawater, and the accommodating body has first through holes for the seawater to enter and outflow the inner cavity; plugging members blocked at the first through holes to close or semi-close the first through holes; and a buoyancy body installed at a transducer of the first observation device, and a buoyancy of the buoyancy body is larger than a mass of the first observation device, so that the first observation device may float in the cover body after the cover body is filled with water, and a posture of the transducer in the cover body always keeps vertically to the sea surface.

Abstract: Disclosed is a nonlinear optimization method for parameters of ocean ecological dynamics model, comprising the following steps: acquiring a state variable set and a parameter set to be optimized; building an ocean ecological dynamics model; acquiring a final cost function equation group; solving the ocean ecological dynamics model to obtain numerical solutions of each state variable; acquiring a Hamilton function of the cost function equation group under a constraint condition, and acquiring an adjoint equation based on the Hamilton function; adjusting the parameter set to be optimized based on the adjoint equation to obtain an optimal parameter set.

Abstract: Disclosed is an optimal control method of pollutant flux into the coastal waters based on virtual discharge amount, comprising: setting water quality control points and water quality control objectives in target sea areas; constructing response matrix of coastal water quality to pollution source discharged from land, and extracting response coefficient matrix of different pollution sources and different control points for the water quality control points through the response coefficient matrix of coastal water quality to pollution source discharged from land; and establishing a control model for total discharge amount of pollutants into the coastal waters through the response coefficient matrix; and calculating an optimal control amount of flux of the different pollution sources into the coastal waters based on the control model for total discharge amount of pollutants into the coastal waters.

Abstract: Disclosed are an automatic stable posture seabed base and a releasing method, belonging to the technical field of ocean observation. The automatic stable posture seabed base includes an accommodating body with an inner cavity for accommodating the first observation device and a seawater, and the accommodating body has first through holes for the seawater to enter and outflow the inner cavity; plugging members blocked at the first through holes to close or semi-close the first through holes; and a buoyancy body installed at a transducer of the first observation device, and a buoyancy of the buoyancy body is larger than a mass of the first observation device, so that the first observation device may float in the cover body after the cover body is filled with water, and a posture of the transducer in the cover body always keeps vertically to the sea surface.