【摘要】 本文研究了宁夏北部(青铜峡、吴忠以北)地区近二十年来垂直形变场的演变特征,并与陕西关中地区垂直形变进行了定性、定量比较。结果表明:1977年前,宁北与关中出现准同步垂直形变反向,八十年代以来两地垂直形变程度不同地都有加速趋势。最后对产生这一现象的原因作了粗浅的探讨。更多还原

【Abstract】 This paper analyses the evolutional characteristics of recent 20 years vertical deformation field in the northern Ningxia autonomous region,and gives the qualitative and quantitative compare with vertical deformation in Guanzhong area. The authors recognize that quasisynehromous abnormal deformation occurred in northern Ningxia and Guanzhong area before 1977, and that different degrees of acceleration tendency has arisen in both the areas since early 1980’s. Additionally the possible factors caused above phenomena are discussed.更多还原