(Wuhan Geological Survey Center of China Geological Survey)
Wuhan Geological Survey Center, as the geological survey management institution in Central and South China, undertakes the management and service of geological survey data and information in Central and South China. In recent years, our library has been innovatively exploring the idea of developing geological data service products, integrating geological data, extracting thematic data, building databases, developing data publishing systems and other technical methods and means, exploring the development mode of geological data service products and innovating the expression forms of geological data publishing. Providing a variety of retrieval methods and changing the service mode of geological data have greatly improved the service ability of geological data, and carried out fruitful social service of geological data through online publishing, window reception, electronic reading room and other forms.
Keywords: Thoughts on developing geological data service products
Introduction to 0
Geological data is an important information resource obtained by geologists. As a part of social information, it has increasingly become an important resource for economic construction. The socialized service of geological data is an important embodiment that geological work actively serves the development of national economy and provides basic geological data and resource guarantee for planning and construction [1 2].
Wuhan Geological Survey Center, as the management organization of geological survey projects in Central and South China, is entrusted by China Geological Survey to receive, check, sort out and keep the data of geological survey projects submitted by Central and South China, and at the same time carry out socialized service of geological survey data. In recent years, Wuhan Geological Survey Center has continuously strengthened the integrated development of geological data service products, closely focusing on the national economic construction and social needs, and formed a series of geological data service products; These products have been widely used in society, government and professional institutions by using various forms and multi-faceted services such as library, network, publishing, telephone and logistics, and achieved good results.
In recent years, Wuhan Geological Survey Center has mainly carried out the following work in geological data service management: classifying and sorting out existing geological data, integrating geological data, developing and integrating a series of geological data service products, building an electronic reading room, publishing geological data service products by using information networks and publications, and providing geological data services in an all-round way.
This paper mainly introduces integrating geological data, developing geological data service products, building electronic reading room, increasing service channels, strengthening network service, releasing geological data service products and using network service to carry out geological data service through information technology and network technology. The author focuses on the idea and significance of developing geological data service products.
1 thinking on the development of geological data service products
First of all, the existing geological data sets are sorted in blocks, integrated with geological data, and integrated geological data service products are developed; Secondly, geological data service products are published through editing, publishing, public distribution, online publishing and electronic reading room. , providing geological data services in all aspects. The geological data service products, systems and service schemes developed by Wuhan Geological Survey Center are as follows.
Tibetan Plateau 1. 1 Measured Strata Profile Database
The Qinghai-Tibet Plateau and its adjacent areas include Tibet, Qinghai, most of Gansu, western Sichuan, northwestern Yunnan, southern Xinjiang, western Ningxia and other administrative regions, with a geographical range of 25 ~ 40 N and 72 ~106 E, of which1:50,000,1:250,006. The database is divided into two record tables: SCPM (actually measured profile record table), FCMS (profile layered description record table) and JPG (profile schematic diagram), and the data is entered by (Access) software. Collect1:50,000,1:200,000 and1:250,000 regional survey reports, profile information and other geological data used to develop geological data service products, summarize, analyze and comprehensively study the data, process the data, collect and input the data by using database software, and establish a measured profile database. The WebGIS service architecture of OracleSpatial+MapViewer is adopted to realize the real-time publishing and dynamic updating of stratigraphic profile data in Qinghai-Tibet Plateau, and provide users with map query, browsing and stratigraphic profile data retrieval and query services. Through this system, users can intuitively understand the distribution of completed measured sections on the Qinghai-Tibet Plateau, understand the geographical location, length, production unit and production date of each measured section, watch section drawings and section photos, and understand the rock characteristics, fossil types, rock thickness and fossil photos of each stratum section. On the basis of establishing the database of measured profile, the distribution map of measured stratigraphic profile in Qinghai-Tibet Plateau is compiled to provide services for professionals.
1.2 graphic data management and service system
Based on MapGIS geographic database, the system stores and manages spatial data and non-spatial data such as basic geography, basic geology, geophysics, geochemistry, mineral resources and geological disasters, analyzes the semantics of these geographic data, closely combines GIS and DBMS, and makes full use of the characteristics of DBMS to realize the spatial information, attribute information, chart information and metadata of regional geology, mineral resources, hydrogeology, geophysical and geochemical exploration and remote databases, as well as various geological survey and informatization achievements and metadata. The system includes the following two functional indicators: ① Data warehousing and management. Provide integrated data management functions of national large-scale geological map spatial database, gravity database, magnetic database, geochemical database, heavy sand database, isotope database, mineral database and geological work degree database, and manage and maintain them according to the classification of professional databases. ② Database retrieval and query. It provides retrieval and query of basic geology, mineral resources, geophysical and geochemical remote sensing data, heavy sand, gravity, aeromagnetism, isotopes, rocks, minerals and other data. From the geographical scope, the system provides a variety of retrieval and query methods, including map retrieval, range retrieval, metadata retrieval, administrative region retrieval and mouse interactive selection retrieval. From the point of view of database attributes, the system provides the function of attribute retrieval customization for different databases, allowing users to customize the attribute content to be retrieved. In addition, the system provides comprehensive retrieval function of attributes between different databases, and provides users with comprehensive extraction and mapping output of different attribute information in different databases. The system is installed in the classified machine of the electronic reading room of Wuhan Geological Survey Center, which realizes the effective management and service of geological data, and is used for the maintenance and service of geological data such as gallery management, data import, data query, data modification and editing, data export, data conversion operation, attribute data migration and system log management.
1.3 geological survey data full-text retrieval system
Based on Lucene full-text retrieval engine toolkit, the full-text retrieval system of geological survey data is designed, developed and finally realized. When the user sends a query request, the system will search the index created by the index server according to the search words to retrieve relevant geological data. However, the internal implementation process and retrieval database are hidden from users. The index of the program background is updated regularly by the system, and the user has no permission to view and operate. When users type a keyword and click the query operation, they can view the search results on the page, and rank each document according to the relevance of the keyword. You can view and download the whole document by clicking the relevant links on the page, and at the same time display some article abstracts. In addition to providing full-text fuzzy retrieval, you can also query the external characteristics of the report, such as report title, author, report formation time and so on. This system chooses to extract abstracts, and dynamically generates document abstracts around the keywords queried by users, that is, after users input keyword queries, they extract the text before and after the keywords in the document to generate abstracts, and highlight the keywords. At the same time, the system provides multi-condition combination retrieval according to these fields, that is, the data corresponding to the fields that meet the conditions at the same time are retrieved. This query method is suitable for users with strong search purpose to find data accurately. Therefore, this system provides users with keyword recommendation function, that is, when users enter keywords for retrieval, the system will display words related to the keywords at the bottom of the webpage to guide users to complete related work. When users find the documents they need, the system supports online reading of documents. In order to ensure that the document will not be copied and pasted and a good user experience, the system will display the data queried by users online in flash format. The full-text retrieval system of geological survey results data is installed and operated on the computer in the internal electronic reading room of Wuhan Geological Survey Center, so as to better provide geological data services for social users.
1.4 Graphic Retrieval Set of Geological Data of Wuhan Geological Survey Center
The graphic retrieval set of geological data collected by Wuhan Geological Survey Center in Wuhan is compiled according to different classifications and scales of geological data. Professional classification mainly includes regional geological survey, mineral resources, hydro-environmental geology, geophysical and geochemical exploration and remote sensing geological survey, information technology and technical methods, comprehensive research, digital topographic map and so on. The scale mainly includes1:250,000,1:200,000,65438. In order to make it convenient for readers to query quickly and intuitively, MapGIS software is used to compile the index map of geological data with corresponding scale. The index maps of geological data such as 1:250000, 1:200000, 1:50000 are compiled according to the corresponding scale standard maps and charts. This atlas is published on the website of Wuhan Geological Survey Center in the form of pictures and databases. According to the classification and scale of geological data, the file number of the data can be quickly and intuitively inquired, which greatly improves the efficiency of data inquiry. At the same time, the paper media atlas is distributed to users and stored in the reading room, which greatly facilitates users and greatly improves the service level of geological data.
1.5 Guide to Geological Survey Results in Central and South China
By editing, publishing and publicly issuing the Guide to Geological Survey Results in Central and South China, the latest achievements of geological survey and research in Central and South China will be introduced to administrative departments, business management departments and geological units at all levels in a timely, accurate and concise manner. According to the contents of regional geological survey, mineral resources, hydrogeology, geophysical and geochemical exploration and remote sensing geological survey, information technology and technical methods, and comprehensive research, the Guide divides the results into six categories. Each category is arranged in chronological order of submission. Each document of the achievement data includes the name of the achievement, editing unit, author, completion time, submitting unit, submission time, document number, data form, classification, subject words, content introduction, approval documents, drawings, attachments, database and software, etc., and the content is detailed, basically covering all the elements of the achievement data. At the same time, the guide is also published through the website of Wuhan Geological Survey Center, which enables users to browse and retrieve the survey results in Central and South China more conveniently and quickly.
1.6 file-level catalog database of geological data in central and southern China
In recent years, most geological data management institutions at all levels in China have developed file-level catalog databases, but the construction of file-level catalog databases is still lagging behind, which seriously restricts the in-depth service of geological data and the enjoyment of data. Wuhan Geodetic Center took the lead in building a file-level catalog database of geological data in China, and standardized the structure of the catalog data of geological data files. Its contents mainly include: national unified coding, data file coding, original data file coding, title, completion unit, completion person, completion time, starting longitude, starting latitude, ending longitude, ending latitude, carrier number, carrier unit, carrier type, carrier specification, classification, etc. According to the classification of geological data, a file-level catalogue database of geological data is established, including geological survey results, original data and physical data in central and southern China. Under the condition of fully quoting or referring to the existing standards and specifications, according to the actual situation of data management, balance the data integrity, data collection workload and data storage redundancy of file-level catalogue, and fully integrate with file-level catalogue database to establish the file-level catalogue database of geological data in Central South China. The file-level catalog database is installed in the electronic reading room of our library. Borrowers can accurately find the information of every document and geological data by querying and searching the catalogue, which improves the service quality of geological data.
2 meaning
With the development of geological data service products, the geological data service mode has changed from traditional and single library service to multi-channel and multi-form service mode. From a single expression of geological data to a variety of forms such as database, atlas and monograph collection. The developed service products not only disclose the collection resources of Wuhan Geological Survey Center to the public, but also publicize the results of "Geological Survey". Geological data integration, thematic data extraction, database construction, data release system development and other technical methods and means, explore the integrated development mode of geological data, innovate the expression mode of geological data release, provide rich and diverse retrieval means, change the service mode of geological data, greatly improve the service capacity of geological data, and carry out effective social services of geological data [3].
refer to
[1] Yan Guangsheng. Analysis on the progress of geological data management and service in China [J]. China Mining, 2012,21(1):14 ~16.
[2] Yang Qiqing. Discussion on constructing socialized service mechanism of geological survey data —— Taking Caofeidian regional development geological environment protection investigation and evaluation project as an example [J]. China land and resources economy, 2011(10): 36 ~ 38.