(一)考察情况和资料分析现根据对1986年11月15日台湾花莲7.6级地震在福建地区震害的考察情况,初步探讨福建地区横向烈度异常。1.平潭县考察情况平潭岛离震中区最近(图3.1)。在该县共考察了7个乡镇(占全县面积一半以上)。平潭县的民房主要为毛石墙、木头和瓦片结构。在这次地震发生时,墙体被震裂的现象很普遍,新建房屋比旧房屋的裂缝相对较多。裂缝 (1) Investigation and Analysis of Data Based on the investigation of the earthquake damage in the Hualien earthquake of magnitude of magnitude of magnitude of 7.6 on November 15, 1986 in Hualien, Taiwan, preliminary studies on the horizontal intensity anomalies in Fujian are conducted. 1. Investigation of Pingtan County Pingtan Island is near the epicenter of the epicenter (Figure 3.1). In the county a total of seven townships (accounting for more than half of the county area). Pingtan County houses are mainly stone walls, wood and tile structure. At the time of the earthquake, the walls were shattered and the cracks in the newly built houses were relatively greater than those in the old houses. crack