[Objective] The research aimed to analyze variation characteristics of the precipitation in Zigong City in recent 50 years.[Method] Based on daily precipitation data at three observation stations in Zigong City from 1...[Objective] The research aimed to analyze variation characteristics of the precipitation in Zigong City in recent 50 years.[Method] Based on daily precipitation data at three observation stations in Zigong City from 1961 to 2010,linear tendency method and accumulative anomaly method were adopted to analyze climatic change characteristics of the annual,seasonal,monthly rainfalls and rain days in Zigong City in recent 50 years.[Result]The annual rainfall overall presented a decreasing trend at the variation tendency rate of-28.0 mm /10 a in Zigong City.The annual rain days obviously declined at the variation tendency rate of-5.6 d /10 a.The decline of rain days was more obvious than that of the rainfall.Decline of the light rain days was especially serious.Not only trends of summer,autumn and winter rainfalls were all negative,but also trends of the four-season rain days were all negative.Reductions of autumn rainfall and rain days were the most remarkable and the largest in magnitude.Monthly rainfall presented single-peak type distribution,and monthly rain days presented double-peak type distribution.Days of each-level precipitation within one year in each area of Zigong City were nearly consistent.Moreover,rain days decreased as magnitude increased.An obvious characteristic of the precipitation variation in Zigong City in recent 50 years was synchronal decrease of the annual rainfall and rain days.[Conclusion]In general,the natural rainfall resource in Zigong City was tending to reduce,and autumn drought was obvious.展开更多
APART form its reputation as"the capital of salt”for thou-sands of years,Zigong, inwestern Sichuan Province,is bestknown as the home of dinosaurs.More than 90 sites across the city‘sfour districts and two count...APART form its reputation as"the capital of salt”for thou-sands of years,Zigong, inwestern Sichuan Province,is bestknown as the home of dinosaurs.More than 90 sites across the city‘sfour districts and two counties haveyielded large quantities of dinosaurfossil‘s,the most famous being theDashanpu site,11 kilometers nor-theast of the city proper.Some 10,-000 remains of dinosaurs and theircontemporaries in the animal展开更多
Salt culture is the main component of traditional culture in Zigong,Sichuan.With centuries of history,it has accumulated rich cultural connotations.At present,Zigong salt culture,as a precious traditional cultural wea...Salt culture is the main component of traditional culture in Zigong,Sichuan.With centuries of history,it has accumulated rich cultural connotations.At present,Zigong salt culture,as a precious traditional cultural wealth,has taken cultural and creative industries as a new carrier of communication in the rapid development of digital new media technology,giving full play to the resource advantages of its traditional culture.This article focuses on the study of the development path of Zigong salt cultural and creative industry in the new digital media era.Combining digital new media technology with cultural and creative industries,Zigong salt culture actively uses virtual technology to realize the innovative development of cultural and creative industries,promote the cultivation of cultural and creative brands based on digital new media technology.This article aims to give relevant strategies with reference value,so as to make corresponding contributions to the development path of Zigong salt culture in the future.展开更多
In order to reveal the relationship between water injection in mine wells in the Zigong area and seismicity,we divide the historical earthquakes of ML≥1. 2 into 3 phases according to seismicity behavior,and the ETAS ...In order to reveal the relationship between water injection in mine wells in the Zigong area and seismicity,we divide the historical earthquakes of ML≥1. 2 into 3 phases according to seismicity behavior,and the ETAS model parameters are then inversed by the POWELL method. The results show that phase 1 and 2,in which there is no water injection,have moderate-to-low ratio of background earthquakes ( 40% ～ 50%),and aftershocks are relatively less for a single earthquake sequence. In phase 3,where there is water injection, the aftershocks triggered by foreshocks dominate (93. 1%),and background earthquakes amount only to 6. 9%,less than those of phase 1 and 2. The results conflict with the existing cognition. To resolve this problem,we propose that the occurrence ratio of background earthquakes in unit time,that is,the μ value in ETAS model is used as an indicator of water injection triggered earthquakes. Compared to the first two phases,phase 3 has the largest μ value,which illustrates that the water injection has an obvious triggering effect on earthquakes of this region.展开更多
The differences of regional economic development between underdeveloped areas and developed areas are mainly embodied by different levels of private economic development. Since 20-year reform and opening-up to the out...The differences of regional economic development between underdeveloped areas and developed areas are mainly embodied by different levels of private economic development. Since 20-year reform and opening-up to the outside world, the private industry of Zigong has developed gradually, become more and more economically competitive, and played a more and more important role in the economic structure of Zigong. This paper analyzes the problems of private economy and its countermeasures based on the research on its status quo.展开更多
文摘[Objective] The research aimed to analyze variation characteristics of the precipitation in Zigong City in recent 50 years.[Method] Based on daily precipitation data at three observation stations in Zigong City from 1961 to 2010,linear tendency method and accumulative anomaly method were adopted to analyze climatic change characteristics of the annual,seasonal,monthly rainfalls and rain days in Zigong City in recent 50 years.[Result]The annual rainfall overall presented a decreasing trend at the variation tendency rate of-28.0 mm /10 a in Zigong City.The annual rain days obviously declined at the variation tendency rate of-5.6 d /10 a.The decline of rain days was more obvious than that of the rainfall.Decline of the light rain days was especially serious.Not only trends of summer,autumn and winter rainfalls were all negative,but also trends of the four-season rain days were all negative.Reductions of autumn rainfall and rain days were the most remarkable and the largest in magnitude.Monthly rainfall presented single-peak type distribution,and monthly rain days presented double-peak type distribution.Days of each-level precipitation within one year in each area of Zigong City were nearly consistent.Moreover,rain days decreased as magnitude increased.An obvious characteristic of the precipitation variation in Zigong City in recent 50 years was synchronal decrease of the annual rainfall and rain days.[Conclusion]In general,the natural rainfall resource in Zigong City was tending to reduce,and autumn drought was obvious.
文摘APART form its reputation as"the capital of salt”for thou-sands of years,Zigong, inwestern Sichuan Province,is bestknown as the home of dinosaurs.More than 90 sites across the city‘sfour districts and two counties haveyielded large quantities of dinosaurfossil‘s,the most famous being theDashanpu site,11 kilometers nor-theast of the city proper.Some 10,-000 remains of dinosaurs and theircontemporaries in the animal
基金The Key Research Base of Humanities and Social Sciences in Sichuan Province-Project Funded by China Salt Culture Research Center of Sichuan University of Science&Engineering,(No.:YWHY18-06)。
文摘Salt culture is the main component of traditional culture in Zigong,Sichuan.With centuries of history,it has accumulated rich cultural connotations.At present,Zigong salt culture,as a precious traditional cultural wealth,has taken cultural and creative industries as a new carrier of communication in the rapid development of digital new media technology,giving full play to the resource advantages of its traditional culture.This article focuses on the study of the development path of Zigong salt cultural and creative industry in the new digital media era.Combining digital new media technology with cultural and creative industries,Zigong salt culture actively uses virtual technology to realize the innovative development of cultural and creative industries,promote the cultivation of cultural and creative brands based on digital new media technology.This article aims to give relevant strategies with reference value,so as to make corresponding contributions to the development path of Zigong salt culture in the future.
基金supported by "Study on Strong Earthquake Risk in Southern Region of Longmenshan Fault,Huayingshan Fault and Border Area of Sichuan and Yunnan Provinces",Department of Earthquake Monitoring and Prediction,China Earthquake Administration
文摘In order to reveal the relationship between water injection in mine wells in the Zigong area and seismicity,we divide the historical earthquakes of ML≥1. 2 into 3 phases according to seismicity behavior,and the ETAS model parameters are then inversed by the POWELL method. The results show that phase 1 and 2,in which there is no water injection,have moderate-to-low ratio of background earthquakes ( 40% ～ 50%),and aftershocks are relatively less for a single earthquake sequence. In phase 3,where there is water injection, the aftershocks triggered by foreshocks dominate (93. 1%),and background earthquakes amount only to 6. 9%,less than those of phase 1 and 2. The results conflict with the existing cognition. To resolve this problem,we propose that the occurrence ratio of background earthquakes in unit time,that is,the μ value in ETAS model is used as an indicator of water injection triggered earthquakes. Compared to the first two phases,phase 3 has the largest μ value,which illustrates that the water injection has an obvious triggering effect on earthquakes of this region.
文摘The differences of regional economic development between underdeveloped areas and developed areas are mainly embodied by different levels of private economic development. Since 20-year reform and opening-up to the outside world, the private industry of Zigong has developed gradually, become more and more economically competitive, and played a more and more important role in the economic structure of Zigong. This paper analyzes the problems of private economy and its countermeasures based on the research on its status quo.
