The Diatom Paleolimnology Data Cooperative (DPDC) is a database of diatom and associated ecological and paleolimnological data useful in studying global change.
Moreover, it offers various on-line data bases like the International Ocean Atlas Series (on the Artic, Barent and Okhotsk Sea) and the Coastel Water Temeperature Guide.
The paper analyzes the occurrence regularity of rock burst of about 263 times in Laohutai mine field by database, the osculating relations of rock burst and active faults were summarized.