【摘要】 分析了汶川MS8.0地震引起的甘肃"十五"数字化水位、水温同震响应特征.结果表明:①响应灵敏性上,水位高于水温,井孔水温下段高于中段;②响应起始时间上,不论是水位还是水温,均出现在S波达到之后;③同井并行观测的不同测项上,响应起始、结束或转折时间水位均早于水温;④响应起始时间与震中距的关系,当震中距相差比较大时,各测项起始时间随震中距的增大而延迟;⑤响应的曲线形态上,水位、水温大多表现为下降变化,并且同井观测的水位和水温在形态上很相似,具有很好的协调性特征,即同为上升或同为下降或同为振荡.通过对变化较稳定的响应过程进行曲线拟合分析,结果显示水位的响应曲线几乎均为3次曲线形态,而水温的响应曲线几乎均为对数形态.更多还原

【Abstract】 The coseismic response characteristics of digital records of water level and water temperature caused by the Wenchuan MS8.0 earthquake are studied. The main results are as follows: ① The water level is more sensitive to earthquake than the water temperature,and the temperature of deep well water is more sensitive than that of shallow well. ② Whether water level or water temperature,their start time of coseismic response is later than the time of S-wave arriving at the observation station. ③ For different observation items from the same well,the initial change time of water level is earlier than that of water temperature. ④ The larger the epicenter distance,the later the appearance of coseismic response. ⑤ Most variations of water level and water temperature display a decrease trend,and the water level and water temperature from the same well often show consistent variation,i.e.,both being raised or lowered,or both fluctuating. For stable response process,almost all the variations of water level may be fitted with a cubic curve,and that of water temperature follows a logarithmic function.更多还原