卫星影象发现唐山北西向断裂及其意义
THE DISCOVERY OF NW DIRECTION FAULTS IN TANGSHAN BY SATELITE PICTURE AND ITS SIGNIFICANCE
-
摘要: 通过卫星影象处理技术得到的唐山震区卫片清晰地显示出一组北西向线性影象。其反映的隐伏断裂构造表现为大规模左旋走滑运动及捩断运动特征。断裂构造的新活动对地形,地质地貌及深部构造等方面产生了不同程度的影响,现代活动也有明显表现。它代表了本区的最新构造活动,是区域构造演化的产物。卫星影象反映的唐山震区北西向隐伏断裂及其表现特征,促进我们进一步认识唐山地震(1976年7月28日Ms7.8)的发震构造。北东与北西向断裂的交汇引起应力集中,最终导致地震的发生。Abstract: The processed satellite picture shows obviously a group of NW direction linear images in Tangshan seismic country, which reflect hidden faults that are noted for a large scale of left lateral slip movement and wrench faulting movement. The new activity of the faults affect respectively on topography, geological landforms and deep structure, also on the acttivity of recent tectonic movent. It is due to the evolution of regional tectonic movement. The NW direction hidden faults make us recoganize further the quake generating structure of the Tangshan earthquake (1979, 7, 28, M7. 8). The stress concentration on the intersection between NE and NW direction faults resulted in the earthquake finally.
-
[1] 虢顺民等,康山地震区域构造背景和发震模式的讨论,地质科学. 4, 1977. [2] 王景明,唐山7.8级和7.1级地震裂缝及地蔑成因的探讨(唐山工程技术学院地震地质报告会论文),1987. [3] 杨理华等,唐山地震的地质构造背景和发震构造,唐山大地震震害(一),地震出版社,1985. [4] 孟宪梁等,构造体系的活动规律与唐山地震,唐山大地震震害(一),地震出版社,1983. [5] 陆涵行等,唐山震区深反射剖面分析,地球物理学报,31,1986. [6] Liu Hefu, 1986, Geodynamic Scenarie and structural of Mesozoic and Cenozoic in China, The American Association of Petrleum Genlogists Butt, Vol. 20, No. 4. [7] 唐山地展工作队,唐山大震发震构造,地震战线,2期,1977. [8] 马瑾,构造变形与唐山地震的发生,一九七六年唐山地震,地震出版社,1982. [9] 李绍柄,唐山地震的发震构造与成因的探讨,华北地震科学,2, 1986. [10] 强祖基、张立人,唐山地震与第四纪活动断袈,中国活动断裂,地震出版社,1982, -
点击查看大图
计量
- 文章访问数: 1390
- HTML全文浏览量: 273
- PDF下载量: 106
下载:
