华北地区地壳垂直形变散度场及其演化特征

张伯宏; 刘天铭

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华北地区地壳垂直形变散度场及其演化特征

张伯宏, 刘天铭

文章导航 > 华北地震科学 > 1997 > 15(2): 32-39

张伯宏, 刘天铭. 华北地区地壳垂直形变散度场及其演化特征[J]. 华北地震科学, 1997, 15(2): 32-39.

引用本文:

张伯宏, 刘天铭. 华北地区地壳垂直形变散度场及其演化特征[J]. 华北地震科学, 1997, 15(2): 32-39.

Zhang Bohong, Liu Tianming. THE CHARACTERISTICS OF THE DIVERGENCY FIFLD OF VERTICAL CRUSTAL DEFORMATION AND EVOLUTONG IN NORTH CHINA[J]. North China Earthquake Sciences, 1997, 15(2): 32-39.

Citation:

Zhang Bohong, Liu Tianming. THE CHARACTERISTICS OF THE DIVERGENCY FIFLD OF VERTICAL CRUSTAL DEFORMATION AND EVOLUTONG IN NORTH CHINA[J]. North China Earthquake Sciences, 1997, 15(2): 32-39.

华北地区地壳垂直形变散度场及其演化特征

国家地震局第二地形变监测中心, 西安 710054

详细信息

中图分类号: P227

THE CHARACTERISTICS OF THE DIVERGENCY FIFLD OF VERTICAL CRUSTAL DEFORMATION AND EVOLUTONG IN NORTH CHINA

No.2 Crust Deformation Monitoring Center, SSB, Xian 710054

摘要: 推导出了用傅里叶级数表示的地壳垂直形变散度场的计算公式。对华北地区三十多年的精密水准测量资料进行了计算,绘制了各时间段的散度等值线图,并对该区地震活动的散度场背景进行了分析研究,初步得到如下几点认识:①散度图象中的正源区和负源区是成对出现的,散度密集带分布在正源区和负源区之间,零散度区也位于正源区和负源区之间。②散度密集带和华北地区断裂构造带在分布上呈现一致性,表现在大多数散度密集带和断裂带在走向上相一致。③从正源区和负源区的间隔式分布来看,散度随着时间的推移,有从北向南、从东向西迁移的特点。④地壳垂直形变散度场的零散度区就是地壳垂直形变场的无源区。这种无源区是一种暂态表现,既有散发又有吸收,才能保持地壳本身固有的运动状态。暂态无源区的出现,预示着地壳运动将以新的面貌出现,这可能预示蕴震过程的完结,地震的来临,正源区与负源区的交替出现是地壳运动的正常运动状态,而无源区的出现也许是异常的表现。
- 地震活动 /
- 华北 /
- 地壳形变图 /
- 傅里叶变换
Abstract: In this paper, the formula that shows the divergency field of the vertical crustal deformation is deduced from Fourier series, and the data of the precise levelling for more than 30 years in North China were calculated. We draw a map of equal value of the divergency for each period and analyzed the relation between the earthquake activity and the divergency field in this area. The conclusion is as follows:(1) It is found by couples for the positive source region and the negative source region in the divergency map. The high density divergency field distributes between positive source region and negative source region, and the naught divergency field is also located among the positive source region and the negative source region. (2) It is loomed unanimously in distributing for the high density divergency belt and the structure fissure belt in North China, and most of them are unanimous in strike. (3) It is shown from the distribution of the interval formula among the positive source region and the negative source region that the divergency map moves from South to North and from East to west with the elapes of time.(4) The naught of divergency region of vertical crustal deformation field is a certain of the positive region of vertical crustal deformation field. The source region is a short-lived phenomenon, which are the scattered and the observed, and then it can keep the moving state for the inherence of crust. The short -lived phenomenon prefigUre a new pattern of crustal movement and the earthquake preparation would be finished. When the positive sourve region and the negative source region is occuring alternately, it is the normal state, but when the source- free region is occuring, it is perhaps an anomalous phenomenon.
- crustal deformation map /
- Fourier transform /

[1]

1 陶本藻,王新洲,等.用于垂直形变模型的多面函鼓拟合法的试险研究.地壳形变与地震. 1992. 12 (1).
2 黄立人,刘天奎.几种地壳垂直运动分析方法的数值实险.地壳形变与地震. 1992. 12 (1).
3 刘天奎,黄立人.提取地壳垂直形变信息时富氏系数及其阶数的合理选取.地壳形变与地震. 1993. 13 (2).
4 谢树艺.矢量分析与场论.北京:高等被育出版社.1983.42-48
5 黄立人.由复测精密水准用傅氏分析法提取地壳垂直运动信息可能性的探讨.测绘学报. 1990. 9 (4).
6 国家地震局《一九七六年唐山地震》编辑组.一九七六年唐山地震.北京:地震出版社. 1982. 75

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华北地区地壳垂直形变散度场及其演化特征

国家地震局第二地形变监测中心, 西安 710054

收稿日期: 1996-04-01
刊出日期: 1997-06-15

中图分类号: P227

关键词:

地震活动 /

华北 /

地壳形变图 /

傅里叶变换

摘要: 推导出了用傅里叶级数表示的地壳垂直形变散度场的计算公式。对华北地区三十多年的精密水准测量资料进行了计算,绘制了各时间段的散度等值线图,并对该区地震活动的散度场背景进行了分析研究,初步得到如下几点认识:①散度图象中的正源区和负源区是成对出现的,散度密集带分布在正源区和负源区之间,零散度区也位于正源区和负源区之间。②散度密集带和华北地区断裂构造带在分布上呈现一致性,表现在大多数散度密集带和断裂带在走向上相一致。③从正源区和负源区的间隔式分布来看,散度随着时间的推移,有从北向南、从东向西迁移的特点。④地壳垂直形变散度场的零散度区就是地壳垂直形变场的无源区。这种无源区是一种暂态表现,既有散发又有吸收,才能保持地壳本身固有的运动状态。暂态无源区的出现,预示着地壳运动将以新的面貌出现,这可能预示蕴震过程的完结,地震的来临,正源区与负源区的交替出现是地壳运动的正常运动状态,而无源区的出现也许是异常的表现。

English Abstract

THE CHARACTERISTICS OF THE DIVERGENCY FIFLD OF VERTICAL CRUSTAL DEFORMATION AND EVOLUTONG IN NORTH CHINA

No.2 Crust Deformation Monitoring Center, SSB, Xian 710054

Received Date: 1996-04-01
Publish Date: 1997-06-15

Keywords:

Abstract: In this paper, the formula that shows the divergency field of the vertical crustal deformation is deduced from Fourier series, and the data of the precise levelling for more than 30 years in North China were calculated. We draw a map of equal value of the divergency for each period and analyzed the relation between the earthquake activity and the divergency field in this area. The conclusion is as follows:(1) It is found by couples for the positive source region and the negative source region in the divergency map. The high density divergency field distributes between positive source region and negative source region, and the naught divergency field is also located among the positive source region and the negative source region. (2) It is loomed unanimously in distributing for the high density divergency belt and the structure fissure belt in North China, and most of them are unanimous in strike. (3) It is shown from the distribution of the interval formula among the positive source region and the negative source region that the divergency map moves from South to North and from East to west with the elapes of time.(4) The naught of divergency region of vertical crustal deformation field is a certain of the positive region of vertical crustal deformation field. The source region is a short-lived phenomenon, which are the scattered and the observed, and then it can keep the moving state for the inherence of crust. The short -lived phenomenon prefigUre a new pattern of crustal movement and the earthquake preparation would be finished. When the positive sourve region and the negative source region is occuring alternately, it is the normal state, but when the source- free region is occuring, it is perhaps an anomalous phenomenon.

张伯宏, 刘天铭. 华北地区地壳垂直形变散度场及其演化特征[J]. 华北地震科学, 1997, 15(2): 32-39.

引用本文:

张伯宏, 刘天铭. 华北地区地壳垂直形变散度场及其演化特征[J]. 华北地震科学, 1997, 15(2): 32-39.

Zhang Bohong, Liu Tianming. THE CHARACTERISTICS OF THE DIVERGENCY FIFLD OF VERTICAL CRUSTAL DEFORMATION AND EVOLUTONG IN NORTH CHINA[J]. North China Earthquake Sciences, 1997, 15(2): 32-39.

Citation:

Zhang Bohong, Liu Tianming. THE CHARACTERISTICS OF THE DIVERGENCY FIFLD OF VERTICAL CRUSTAL DEFORMATION AND EVOLUTONG IN NORTH CHINA[J]. North China Earthquake Sciences, 1997, 15(2): 32-39.