Pub Date : 1999-04-01DOI: 10.11867/j.issn.1001-8166.1999.02.0197
Jin Guiyun
Soil micromorphology is a discipline to interpret the development of soil based on its microscopic features.There are two advantages of its use in archaeology,one is to analyse the relationship between environmental change and cultural development,the other is to analyse the characteristics of archaeological features and the human activity reflected in it.
{"title":"SOIL MICROMORPHOLOGY IN ARCHAEOLOGY","authors":"Jin Guiyun","doi":"10.11867/j.issn.1001-8166.1999.02.0197","DOIUrl":"https://doi.org/10.11867/j.issn.1001-8166.1999.02.0197","url":null,"abstract":"Soil micromorphology is a discipline to interpret the development of soil based on its microscopic features.There are two advantages of its use in archaeology,one is to analyse the relationship between environmental change and cultural development,the other is to analyse the characteristics of archaeological features and the human activity reflected in it.","PeriodicalId":415150,"journal":{"name":"Advance in Earth Sciences","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127395250","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1999-02-01DOI: 10.11867/J.ISSN.1001-8166.1999.01.0037
Wang Tijian, Sun Zhaobo
In this paper,the developments of study on characteristics and mechanism of ozone variation and its climate effect are reviewed.The amount of tropospheric O 3(in North Hemisphere)is increasing,that of stratospheric O 3 is decreasing and the total ozone amount also is decreasing which show the trend of global ozone variation.The main reason is that the O 3 precusors,such as NOx,NMHC,CO,CH 4,are increasing due to human activities and the species(NOx,H 2O,N 2O,CFCs)which can destroy stratospheric O 3 are increasing.The enhancement of tropospheric O 3 will warm the ground surface and the lower atmosphere and the depletion of stratospheric O 3 may warm or cool the ground surface and lower atmosphere.It is a very effective way to use the global or regional climate model coupled with a atmospheric chemistry model for study on ozone variation and its climate effect.
{"title":"DEVELOPMENT OF STUDY ON OZONE VARIATION AND ITS CLIMATIC EFFECT","authors":"Wang Tijian, Sun Zhaobo","doi":"10.11867/J.ISSN.1001-8166.1999.01.0037","DOIUrl":"https://doi.org/10.11867/J.ISSN.1001-8166.1999.01.0037","url":null,"abstract":"In this paper,the developments of study on characteristics and mechanism of ozone variation and its climate effect are reviewed.The amount of tropospheric O 3(in North Hemisphere)is increasing,that of stratospheric O 3 is decreasing and the total ozone amount also is decreasing which show the trend of global ozone variation.The main reason is that the O 3 precusors,such as NOx,NMHC,CO,CH 4,are increasing due to human activities and the species(NOx,H 2O,N 2O,CFCs)which can destroy stratospheric O 3 are increasing.The enhancement of tropospheric O 3 will warm the ground surface and the lower atmosphere and the depletion of stratospheric O 3 may warm or cool the ground surface and lower atmosphere.It is a very effective way to use the global or regional climate model coupled with a atmospheric chemistry model for study on ozone variation and its climate effect.","PeriodicalId":415150,"journal":{"name":"Advance in Earth Sciences","volume":"102 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133585529","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：