Grid is the new technology of IT (Information Technology) field and is developed from the 1990s. It aims to make distributed resources on internet become an organic whole and implement resources sharing and cooperation in an all-round way. The origin and development of grid is simply introduced in the beginning of the paper. And several computing technologies based on the internet are analyzed and compared with grid computing. Meanwhile, the construction of Chinese scientific data grid supported by Chinese Academy of Sciences dates from 2002 is summarized. Then the thought of constructing data grid of geosciences is illustrated in the paper. It is believed that the data grid of geosciences is the infrastructure of e-GeoScience. And the requirements for data grid of geosciences are discussed from several different sides including data characteristics, data users and service patterns in geosciences. Finally, taking scientific data grid for the human-land system as an example, the data layer and the overall framework of the middleware of that are given. And the key problems and its implementation ways in scientific data grid for the human-land system are presented. The scientific data grid for the human-land system has been deployed in four institutes of Chinese Academy Sciences and the distributed resources and unified services are formed. A data intensive application for the scientific data grid, the land surface appearance model based on DEM, is demonstrated in the paper. It is automatic for model when the model is deployed on the scientific data grid for the human-land system. It has positive effects for improving study efficiency of geographic science and promoting the development of e-GeoScience.
SONG Jia, FENG Min, ZHANG Jinqu, YIN Fang
. The Construction & Application for Data Grid of Geosciences[J]. Journal of Geo-information Science, 2011
, 13(3)
: 338
-345
.
DOI: 10.3724/SP.J.1047.2011.00338
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