The determining stress drop andQpvalue are respectively about 1.65×105pa and 266 in the Dongfang small earthquake swarm reston,which are in agreement with the source characteriStics of the small earthquake swarm.
The source characteristics of the Ms6.1 and Ms6.2 earthquakes occurred in Beibuwan are studied by using digital seiSmic data of the short period vertical component of P wave,and the earthquake trend is also analyzied.
Ⅱ You 7 hao, with a yield of 9000kg per hectare or more, share the following sink source characteristics: LAI 6 5～7 0 at full heating and 3 0～4 0 at maturation; biomass yield 18750kg per hectare at maturation; spikelet number over 37500 per hectare, and the ratio of leaf area to grain about 1 7cm 2 per grain.
NMHC discharged in transportation engineering project was studied to analysize source characteristics of NMHC and distribution characteristics of ambient concentration on various transportation facilities.
Based on contrast of distribution, organic type and abundance of Xujiahe formation, Upper Triassic between Chishui area and other areas in Sichuan Basin, and with analysis on the main geo-chemical characteristics of gas from Xujiahe formation, this article discovered the source characteristics of Xujiahe formation, discussed the origin of natural gas found in the Formation, and forecasted the direction of following exploration.
After field profiles being observed and some indoor tests and analysis being fulfilled, this paper researched distribution, organic type and abundance of the Xujiahe Formation, Upper Triassic in Chishui and other areas in the Sichuan Basin, analysed the main geo-chemical characteristics of the gas from the Xujiahe Formation, discovered the source characteristics of the Xujiahe Formation, and discussed the origin of the natural gas found in the formation.
Because the composition of basalts depends on a number of factors including source characteristics, degree of partial melting, mantle temperature and lithospheric thickness, it can be used to constrain the mantle evolution.
As a research method, the high-resolution study of clay components in the sediment cores will be helpful to explaining the source characteristics, transport path and paleoclimatic evolution since the late Quaternary in the South China Sea.