RP圖及RQA分析法在濱海淺層地下水研究中的應用
[Abstract]:Based on the hourly water level, electrical conductivity and surface pressure monitoring data of shallow groundwater in the northeastern coastal area of Hainan Province, the internal dynamic structure of groundwater system is studied by means of RP diagram and RQA analysis. The influence of 蔚 and RR values on the comparison results of groundwater system is analyzed, and the changes of internal dynamic structure of groundwater system caused by typhoon transit are discussed. The results show that: (1) the value of 蔚 has little effect on the air pressure subsystem, but it will enlarge or decrease the difference between the water level and the conductivity subsystem, especially the conductivity subsystem. (2) both air pressure and water level subsystems have two topologies, drift and fragmentation, while electrical conductivity subsystems are dominated by broken structures. Some of them have drifting structure. (3) when typhoon passes through and has influence, the surface pressure appears obvious minimum value, and the corresponding maximum value of groundwater level appears. The RP chart shows the appearance of white banded area. The boundary of the zonal region may indicate the onset and stop time of typhoon influence, while the region width may indicate the duration of typhoon influence. In addition, some electrical conductivity subsystems also appear white banded regions, which may well mean that they are also affected by transit typhoons. (4) for groundwater systems, the laminar flow patterns are always more significant than deterministic ones. The average predictable length of the system is always longer than the trapped time of the "specific state", indicating that the prediction based on adjacent orbits will obtain a longer prediction period.
【作者單位】: 國土資源部廣州海洋地質(zhì)調(diào)查局;廣州市海珠區(qū)氣象局;
【基金】:中國地質(zhì)調(diào)查局基金(1212010914020)
【分類號】:P641;P731
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