1970年云南省通海地震的地形变特征

1970年1月5日在我国云南省通海发生了一次7.7级强烈地震。在该震区地震前后做了一些大地测量的复测工作。地震前十年期间沿水准测线在曲溪盆地处产生了一个相对下沉区,跨曲江断裂处产生南盘相对于北盘下降的现象。地震时的地面垂直形变发展了地震前的特征,形成了更强烈的差异运动。地震时的地面水平形变表现为断裂两侧的水平顺扭的错动,相对错动量为2米。即通海地震的地形变是以水平错扭为主的。地震前后的地形变现象,表明了通海地震时曲江断裂的应力活动方式为:以顺时针水平错动为主兼有北盘相对南盘上逆的斜冲。     

Changes of population growth in Tibet Autonomous Region

Ｉ.ＩｎｔｒｏｄｕｃｔｉｏｎＴｈｅｐｏｐｕｌａｔｉｏｎｏｆｔｈｅＴｉｂｅｔＡｕｔｏｎｏｍｏｕｓＲｅｇｉｏｎｗｈｉｃｈｉｓｔｈｉｎｌｙｓｃａｔｔｅｒｅｄ,ｉｓａｌｍｏｓｔｅｎｔｉｒｅｌｙＴｉｂｅｔａｎ.Ｐｒｉｏｒｔｏｔｈｅｐｅａｃｅｆｕｌｌｉｂｅｒａｔｉｏｎｉｎ1951,Ｔｉｂｅｔａｎｓｕｓｅｄｔｏｂｅｒｕｌｅｄｂｙｔｈｅｌａｍａｉｓｔｓａｎｄａｒｉｓｔｏｃｒａｔｓｕｎｄｅｒｆｅｕｄａｌｓｅｒｆｓｙｓｔｅｍ.Ｔｈｅｕｎｉｑｕｅｈｉｇｈａｎｄｃｏｌｄｃｌｉｍａｔｅ,ｖａｒｉｅｄａｎｄｃｈａｎｇｅａｂｌｅｔｏｐ…     

The evaluation of interregional status and development proposals of Chongqing

ＩｎｔｒｏｄｕｃｔｉｏｎＡｌｏｎｇｗｉｔｈｉｎｔｅｇｒａｔｅｄｒｅｇｉｏｎａｌｃｏｏｐｅｒａｔｉｏｎ,ｉｎｔｅｒｅｇｉｏｎａｌａｓｏｃｉａｔｉｏｎｈａｓｂｅｎｔｈｅｍａｉｎｐａｒｔｏｆｒｅｇｉｏｎａｌｅｃｏｎｏｍｉｃｄｅｖｅｌｏｐｍｅｎｔｉｎｓｏｍｅ...     

The development of Fujian’s outward-oriented economy and its regional differentiation

ＬｏｃａｔｅｄａｔｔｈｅｓｏｕｔｈｅａｓｔｅｒｎｃｏａｓｔｏｆＣｈｉｎａ,Ｆｕｊｉａｎｗａｓｏｎｅｏｆｔｈｅｐｒｏｖｉｎｃｅｓｗｈｉｃｈｗｅｒｅｅａｒｌｉｅｒｏｐｅｎｅｄｔｏｎａｖｉｇａｔｉｏｎａｎｄｈａｄｔｒａｄｅｒｅｌａｔｉｏｎｓｗｉｔｈｔｈｅｗ...     

Selection, distribution and way of development of leading industries in the Beijing Kowloon economic belt

Ｉ．ＡｓｓｅｓｍｅｎｔｏｆｔｈｅＣｏｎｄｉｔｉｏｎｓｆｏｒｔｈｅＤｅｖｅｌｏｐｍｅｎｔｏｆＩｎｄｕｓｔｒｉｅｓｉｎｔｈｅＢｅｉｊｉｎｇＫｏｗｌｏｏｎＥｃｏｎｏｍｉｃＢｅｌｔＴｈｅｅｎｖｉｒｏｎｍｅｎｔａｌｃｏｎｄｉｔｉｏｎｓｆｏｒｔｈｅｅｃｏｎｏｍ...     

Sensitivity of Snowfall Characteristics to Meteorological Conditions in the Yeongdong Region of Korea

This study investigates the characteristics of cold clouds and snowfall in both the Yeongdong coastal and mountainous regions under different meteorological conditions based on the integration of numerical modeling and three-hourly rawinsonde observations with snow crystal photographs for a snowfall event that occurred on 29?30 January 2016.We found that rimed particles predominantly observed turned into dendrite particles in the latter period of the episode when the 850 hPa temperature decreased at the coastal site,whereas the snow crystal habits at the mountainous site were largely needle or rimed needle.Rawinsonde soundings showed a well-defined,two-layered cloud structure along with distinctive wind-directional shear,and an inversion in the equivalent potential temperature above the low-level cloud layer.The first experiment with a decrease in lower-layer temperature showed that the low-level cloud thickness was reduced to less than 1.5 km,and the accumulated precipitation was decreased by 87%compared with the control experiment.The difference in precipitation amount between the single-layered experiment and control experiment(two-layered)was not so significant to attribute it to the effect of the seeder?feeder mechanism.The precipitation in the last experiment by weakening winddirectional shear was increased by 1.4 times greater than the control experiment specifically at the coastal site,with graupel particles accounting for the highest proportion(~62%).The current results would improve snowfall forecasts in complicated geographical environments such as Yeongdong in terms of snow crystal habit as well as snowfall amount in both time and space domains.