鲁32井地下流体观测数据动态变化分析

摘要

鲁32井水位原始曲线难以判定地震前该井含水层系统的应力状态是否发生变化，采用类似Nakai拟合模型，计算水位观测数据体应变固体潮响应振幅因子比，结果表明，胶东半岛及海域发生的ML≥3.9地震前均出现高值异常。与地震活动参数对比分析，发现鲁32井200 km范围内ML≥3.9地震前，水温观测数据动态变化幅度及频度明显较高。%It is dififcult to determine the well aquifer system stress state changes using the original curve of water level recorded before earthquakes at Lu No.32 well. We adopted iftting model similar to the Nakai to calculate loading and unloading response ratio (LURR) of water level. The results show that, LURR increases anomalously beforeML≥3.9 earthquake in Jiaodong Peninsula. Though the comparative analysis of Lu No.32 well water temperature and seismic activity parameter, It is found that, within a range of 200 km ofML≥3.9 earthquake, the magnitude and frequency of changes in water temperature before the earthquake is signiifcantly higher.