One of the core developments in geomathematics in now days is the use of digital data processing in mineral prospecting and assessment. The information discovery is based on multidisciplinary geoscientific data and an...One of the core developments in geomathematics in now days is the use of digital data processing in mineral prospecting and assessment. The information discovery is based on multidisciplinary geoscientific data and an integrated management approach is crucial. The lack of a standard description hinders interoperations in database search and discovery. Metadata hierarchy aims to provide a standard view of the geoscientific data, and facilitate data description and discovery. In the research of integrated geoscientific database, the metadata hierarchy used a standardized description for each collection in the content structure and realized in semantic structure. It recorded both dataset identification and inner structures and relationships of objects, thus differed from many other applications. There were four tiers in the content structure and three levels in the semantic structure. With its help, database users could determine how applicable a dataset is to a project, and improve their queries to the database. Effectiveness of data accessing is significantly enhanced through the rich, consistent metadata.展开更多
Global change refers to changes in the relationship between humans and nature.It is desirable to actively integrate human social activities into the unified framework of global change so that their mutual relations an...Global change refers to changes in the relationship between humans and nature.It is desirable to actively integrate human social activities into the unified framework of global change so that their mutual relations and functional mechanisms can be understood.This complicated issue necessitates an appropriate method allowing domain experts to collaboratively contribute their knowledge to geoscientific research.Also,an efficient approach to optimize experimentation is of great importance.The reproducibility of research methods and results needs to be improved to boost the sharing of geographic knowledge and resources.This paper proposes a versioned geoscientific workflow and characterizes its full lifecycle using Virtual Geographic Environments,intending to facilitate and improve research related to the interactions between global change and human activities.The geoscientific workflow management is realized using the concept of version management,making geographic simulation methods and computational results easily reproducible and extendable.The sharing and reuse of geographic knowledge in various forms are archived through version management of geoscientific workflows.A versatile prototype system is implemented which enables the visual modeling of geoscientific workflows,the interactive optimization and collaborative evaluation of geoscientific workflows at runtime,the multi-dimensional dynamic visualization of geo-workflow outputs,and role-based access control for data security.展开更多
A presentation given to the 6^(th) European Congress on Regional Geoscientific Cartography and Information Systems, Munich, June 2009.Tough Questions.Let me give my answer to the second question in the title:yes,but o...A presentation given to the 6^(th) European Congress on Regional Geoscientific Cartography and Information Systems, Munich, June 2009.Tough Questions.Let me give my answer to the second question in the title:yes,but only if we change radically.If the same question was to be put directly to wider society,who’s taxes pay our salaries,and to whom geology and geological maps are at best a(colourful)mystery,I have no doubt they would respond-you’ve been doing this for more than a century,what more is there possibly left that we need to map?展开更多
Based on the information of geology, geochemistry, geophysics and remote sensing, the GIS of multi-source information is used to evaluate Cu, W and Au mineral resources in Northern Qilian, China. As the GIS evaluation...Based on the information of geology, geochemistry, geophysics and remote sensing, the GIS of multi-source information is used to evaluate Cu, W and Au mineral resources in Northern Qilian, China. As the GIS evaluation system works out in the thinking of geological prospecting, its functions include file management, graph edition, database maintenance, information inquiry and comprehensive spatial analysis as well as prospecting target prognosis. Accordingly, the GIS evaluation system can be used directly and conveniently for inquiry and analysis of visual graphs or images.展开更多
The Indian subcontinent is a repository of Archean cratonic nuclei with plethora of geoscientific data to better understand the early Earth evolution and the operating processes.The Bundelkhand Craton(BuC)in the north...The Indian subcontinent is a repository of Archean cratonic nuclei with plethora of geoscientific data to better understand the early Earth evolution and the operating processes.The Bundelkhand Craton(BuC)in the north-central India is one of the five Archean cratons which preserves signatures of Paleoarchean magmatism,Archean subduction,Neoarchean metamorphism,spectacular craton-scale landforms as a testimony of Paleoproterozoic episodic silico-thermal fluid activity and plume-generated mafic magmatism.展开更多
The journal of Global Geology( English Edition ) is sponsored by the International Center of Geoscience Research and Education in Northeast Asia, Jilin University of China ( ISSN 1673 - 9736, CN22 - 1371/P). The forme...The journal of Global Geology( English Edition ) is sponsored by the International Center of Geoscience Research and Education in Northeast Asia, Jilin University of China ( ISSN 1673 - 9736, CN22 - 1371/P). The former name of the journal was the Journal of International Geoscientific Research in Northeast Asia. It was launched in 1998 and served the scientists and teachers in geosciences in the world. The Editorial Board is composed of 42 scientists from various countries in the world, including China, German, Japan, Korea, Russia, the UK and USA.展开更多
The International Union of Geological Sciences(IUGS)is evaluating whether there are additional geoscientific activities that would be beneficial in helping mitigate the impacts of tsunami.Public concerns about poor de...The International Union of Geological Sciences(IUGS)is evaluating whether there are additional geoscientific activities that would be beneficial in helping mitigate the impacts of tsunami.Public concerns about poor decisions and inaction,and advances in computing power and data mining call for new scientific approaches.Three fundamental requirements for mitigating impacts of natural hazards are defined.These are:(1)improvement of process-oriented understanding,(2)adequate monitoring and optimal use of data,and(3)generation of advice based on scientific,technical and socio-economic expertise.International leadership/coordination is also important.展开更多
The journal of Global Geology is sponsored by the International Center for Geoscience Research and Education in Northeast Asia,Jilin University of China(ISSN 1673-9736,CN 22-1371/P).The former name of the journal was ...The journal of Global Geology is sponsored by the International Center for Geoscience Research and Education in Northeast Asia,Jilin University of China(ISSN 1673-9736,CN 22-1371/P).The former name of the journal was Journal of Geoscientific Research in Northeast Asia.It was launched in 1998 and served the geologist,teachers and students in geosciences.展开更多
基金Funded by the National 863 Program of China (No.2002AA130406)the Key Project of China Geological Survey (No.200218310077).
文摘One of the core developments in geomathematics in now days is the use of digital data processing in mineral prospecting and assessment. The information discovery is based on multidisciplinary geoscientific data and an integrated management approach is crucial. The lack of a standard description hinders interoperations in database search and discovery. Metadata hierarchy aims to provide a standard view of the geoscientific data, and facilitate data description and discovery. In the research of integrated geoscientific database, the metadata hierarchy used a standardized description for each collection in the content structure and realized in semantic structure. It recorded both dataset identification and inner structures and relationships of objects, thus differed from many other applications. There were four tiers in the content structure and three levels in the semantic structure. With its help, database users could determine how applicable a dataset is to a project, and improve their queries to the database. Effectiveness of data accessing is significantly enhanced through the rich, consistent metadata.
基金supported by National Natural Science Foundation of China:[Grant Number U1811464,41971278,41671378]National Key Basic Research Program of China:[Grant Number 2015CB954103].
文摘Global change refers to changes in the relationship between humans and nature.It is desirable to actively integrate human social activities into the unified framework of global change so that their mutual relations and functional mechanisms can be understood.This complicated issue necessitates an appropriate method allowing domain experts to collaboratively contribute their knowledge to geoscientific research.Also,an efficient approach to optimize experimentation is of great importance.The reproducibility of research methods and results needs to be improved to boost the sharing of geographic knowledge and resources.This paper proposes a versioned geoscientific workflow and characterizes its full lifecycle using Virtual Geographic Environments,intending to facilitate and improve research related to the interactions between global change and human activities.The geoscientific workflow management is realized using the concept of version management,making geographic simulation methods and computational results easily reproducible and extendable.The sharing and reuse of geographic knowledge in various forms are archived through version management of geoscientific workflows.A versatile prototype system is implemented which enables the visual modeling of geoscientific workflows,the interactive optimization and collaborative evaluation of geoscientific workflows at runtime,the multi-dimensional dynamic visualization of geo-workflow outputs,and role-based access control for data security.
文摘A presentation given to the 6^(th) European Congress on Regional Geoscientific Cartography and Information Systems, Munich, June 2009.Tough Questions.Let me give my answer to the second question in the title:yes,but only if we change radically.If the same question was to be put directly to wider society,who’s taxes pay our salaries,and to whom geology and geological maps are at best a(colourful)mystery,I have no doubt they would respond-you’ve been doing this for more than a century,what more is there possibly left that we need to map?
文摘Based on the information of geology, geochemistry, geophysics and remote sensing, the GIS of multi-source information is used to evaluate Cu, W and Au mineral resources in Northern Qilian, China. As the GIS evaluation system works out in the thinking of geological prospecting, its functions include file management, graph edition, database maintenance, information inquiry and comprehensive spatial analysis as well as prospecting target prognosis. Accordingly, the GIS evaluation system can be used directly and conveniently for inquiry and analysis of visual graphs or images.
文摘The Indian subcontinent is a repository of Archean cratonic nuclei with plethora of geoscientific data to better understand the early Earth evolution and the operating processes.The Bundelkhand Craton(BuC)in the north-central India is one of the five Archean cratons which preserves signatures of Paleoarchean magmatism,Archean subduction,Neoarchean metamorphism,spectacular craton-scale landforms as a testimony of Paleoproterozoic episodic silico-thermal fluid activity and plume-generated mafic magmatism.
文摘The journal of Global Geology( English Edition ) is sponsored by the International Center of Geoscience Research and Education in Northeast Asia, Jilin University of China ( ISSN 1673 - 9736, CN22 - 1371/P). The former name of the journal was the Journal of International Geoscientific Research in Northeast Asia. It was launched in 1998 and served the scientists and teachers in geosciences in the world. The Editorial Board is composed of 42 scientists from various countries in the world, including China, German, Japan, Korea, Russia, the UK and USA.
文摘The International Union of Geological Sciences(IUGS)is evaluating whether there are additional geoscientific activities that would be beneficial in helping mitigate the impacts of tsunami.Public concerns about poor decisions and inaction,and advances in computing power and data mining call for new scientific approaches.Three fundamental requirements for mitigating impacts of natural hazards are defined.These are:(1)improvement of process-oriented understanding,(2)adequate monitoring and optimal use of data,and(3)generation of advice based on scientific,technical and socio-economic expertise.International leadership/coordination is also important.
文摘The journal of Global Geology is sponsored by the International Center for Geoscience Research and Education in Northeast Asia,Jilin University of China(ISSN 1673-9736,CN 22-1371/P).The former name of the journal was Journal of Geoscientific Research in Northeast Asia.It was launched in 1998 and served the geologist,teachers and students in geosciences.
