In accordance with the coupling coordination mechanism, the comprehensive evaluation index system was made for economy-environment system of Hebei province. The temporal evolution and spatial distribute were researche...In accordance with the coupling coordination mechanism, the comprehensive evaluation index system was made for economy-environment system of Hebei province. The temporal evolution and spatial distribute were researched according to the coupling coordination degree model. The result showed that: During the years from 2003 to 2012 the development level of economy and environment subsystem improved gradually with high synchronization level. The coordination development degree was higher and higher for the whole province. Secondly, the economic level and coupling coordination degree both were signifi cantly different among 11 cities in Hebei province. By contrast, the environment benefi t and coordination development degree distributed evenly. Furthermore, the restrictive role of environment has emerged in the recent two years. Therefore, it is necessary to further change the economic growth pattern in Hebei province.展开更多
The south segment of the China North-South Seismic Belt is located in the southeast margin of the Qinghai Tibet Plateau.This region is characterized by the frequent seismic activity in Chinese mainland.In this paper,t...The south segment of the China North-South Seismic Belt is located in the southeast margin of the Qinghai Tibet Plateau.This region is characterized by the frequent seismic activity in Chinese mainland.In this paper,the geomagnetic field model NGDC-720 and the data of terrestrial heat flow are used to investigate the distribution of crustal magnetic anomalies,the depth of Curie surface,and the characteristics of the crustal thermal structure in the south segment of the North-South Seismic Belt.The distribution characteristics of the vertical component AZ and the magnetic declination AD in the area with earthquakes over a magnitude of 6 and their aftershocks since 1970 are focused on.The results show that the earthquakes are mainly observed in the area of negative magnetic anomaly or the strong and weak transition zone.It especially shows in the AD.The Curie surface in the study area varies significantly,ranging from 20.8 to 31 km.The uplift area of the Curie surface is consistent with the high-value area of terrestrial heat flow.The high geothermal area corresponds to the strong earthquake activity area.The focal depth of most strong earthquakes is shallower than the depth of the Curie surface.The strong earthquakes mainly occur in the deep-shallow transition zones of the Curie surface.The results can be used as a reference for strong earthquake prediction in this area.展开更多
文摘In accordance with the coupling coordination mechanism, the comprehensive evaluation index system was made for economy-environment system of Hebei province. The temporal evolution and spatial distribute were researched according to the coupling coordination degree model. The result showed that: During the years from 2003 to 2012 the development level of economy and environment subsystem improved gradually with high synchronization level. The coordination development degree was higher and higher for the whole province. Secondly, the economic level and coupling coordination degree both were signifi cantly different among 11 cities in Hebei province. By contrast, the environment benefi t and coordination development degree distributed evenly. Furthermore, the restrictive role of environment has emerged in the recent two years. Therefore, it is necessary to further change the economic growth pattern in Hebei province.
基金supported by National Natural Science Foundation of China(No.41864003 and 41964004)as well as Yunnan Fundamental Research Projects(202101AT070181).
文摘The south segment of the China North-South Seismic Belt is located in the southeast margin of the Qinghai Tibet Plateau.This region is characterized by the frequent seismic activity in Chinese mainland.In this paper,the geomagnetic field model NGDC-720 and the data of terrestrial heat flow are used to investigate the distribution of crustal magnetic anomalies,the depth of Curie surface,and the characteristics of the crustal thermal structure in the south segment of the North-South Seismic Belt.The distribution characteristics of the vertical component AZ and the magnetic declination AD in the area with earthquakes over a magnitude of 6 and their aftershocks since 1970 are focused on.The results show that the earthquakes are mainly observed in the area of negative magnetic anomaly or the strong and weak transition zone.It especially shows in the AD.The Curie surface in the study area varies significantly,ranging from 20.8 to 31 km.The uplift area of the Curie surface is consistent with the high-value area of terrestrial heat flow.The high geothermal area corresponds to the strong earthquake activity area.The focal depth of most strong earthquakes is shallower than the depth of the Curie surface.The strong earthquakes mainly occur in the deep-shallow transition zones of the Curie surface.The results can be used as a reference for strong earthquake prediction in this area.
