Papers by Keyword: Marine Pollution

Abstract: For marine water pollution problems, According to the phenomenon that the refractive index of the seawater will change after been polluted .we designed a new fiber optical sensor, and completed a marine pollution monitoring automatic warning system with the sensor. One S (single mode)-M (multimode)-S-M-S structural optical fiber sensor based on the theory of M-Z Interference was made. Due to de refractive index of the fiber cladding will be affected by the environmental solution. We can determine the relationship between the movement of interference spectrum and the refractive index of the solution. With a center wavelength of 1553nm fiber Bragg grating and a coupler to obtain the change of the intensity of the light, then though the specific circuit, we can change the light intensity into the voltage values. Then enter the computer through the acquisition card, real-time reporting of environmental refractive index size, and according to the software set threshold alarms. The refractive index in the range of 1.330-1.390, the system of measurement error is less than 1%.

Abstract: The Great Pacific Garbage Patch which characterized by exceptionally high concentrations of suspended plastic, chemical sludge, and other debris, has a variety of severe influence on the marine life and human beings. Therefore, cleaning up the patch immediately is a matter of great urgency. To solve the problem, three models which are based on different differential equations to predict the amount of waste plastic poured into the ocean are established. According to the basic model, in about next 20 years, the Pacific Ocean will be unable to hold more garbage. Based on the fact that salvaging the waste plastic in the ocean contributes to controlling marine pollution, in accordance with the better model, the Pacific Ocean still has the ability to accommodate garbage before 2060. By improving the better model, a series of results are obtained. Around 2060, the area of the Pacific Ocean Garbage Patch will reach relatively steady state; meanwhile, the annual emissions of the plastic will reach 32,397,273.47 tons. To keep a relatively stable state the area which should be cleaned up will reach about 3,601,672 square kilometers per year. To compare the effect of government increasing taxation and plastic salvaging, a conclusion is reached that the huge economic losses caused by taxes are far more than the amount of money spent in salvaging the plastic garbage.

Abstract: To show that taking measures can bring benefits in marine pollution, first of all, we compared the added weight of polystyrene containers debris between taking and not taking the “3-Cent –measure”. Besides, we calculated the cost for taking this measure. On the bases of these, we found the benefits of taking measures are far greater than their costs. Finally, we suggest that the government take long-term interests into account, and take measures to treat marine pollution.