通过分析2010年9月3日新西兰地震前后3个月的NCEP/NCAR Reanalysis SLHF资料,发现8月1日紧邻震中东北侧出现了孤立的小斑状SLHF异常高值区,幅度约160W/m2.从历史数据分析、背景像元对比、时间序列小波变换等多方面,综合分析了该异常的时空特征.通过排除风速和云的影响,确认导致该次SLHF局部异常的关键因素应是局部地表增温.结合GPS位移数据及构造环境分析,推测此次异常的形成原因可能是深部高温高压区的热物质沿板块俯冲带扩容区上涌,引起震中东北侧、北岛中部及南岛西南部的地热区局部增温,进而改变了该区的地气比湿差,导致SLHF局部增加. By analyzing the NCEP / NCAR Reanalysis SLHF data of 3 months before and after the New Zealand earthquake on September 3, 2010, it was found that an isolated high-value SLHF anomalous region appeared on the northeast side of the epicenter on August 1, with an amplitude of about 160 W / m2. Historical data analysis, background pixel comparison, time-series wavelet transform and so on, the spatio-temporal features of this anomaly are comprehensively analyzed.Through the influence of wind speed and cloud, the key factors that lead to the local SLHF anomaly should be the local surface warming According to GPS displacement data and tectonic environment analysis, it is speculated that this anomaly may be caused by the upwelling of thermal matter in the deep high temperature and high pressure area along the expansion zone of plate subduction zone, causing the geothermal heat in the northeastern epicenter, central North Island and southwestern South Island Local warming, which in turn changed the area than the difference between groundwater, leading to local SLHF increase.