Variation of focal mechanism consistency before 2006 Kuril Islands arc M_W8.3 earthquake

The Central Moment Tensor (CMT) solution obtained by Harvard University for the earthquakes in Kurile Islands area is used in the paper to analyze the consistent focal mechanism in the area, and the idea to make earthquake prediction based on the consistent parameter a of focal mechanism and stress field is proposed.

The Kalaxianger porphyry copper deposit(belt)is located in a Late Paleozoic island arc on the southern margin of the Altay Mountains.

The direction of paleocurrent was found to be 230°-356° and the sediments were found to originate from the southeast Bikou island arc, which is close to the active continental.

the basalt is belong island arc tholeiite and series of the calc-alkaline,and have character of island arc in rare earth element and trace element.

The ore-bearing porphyry at island-arc in the Gongpoquan Copper Deposit:its geology and geochemistry;

The characteristics of the lithology,petrogeochemistry and microelements indicate that the volcanic rocks of Dahalajunshan Formation in this area should belong to the offspring of island-arc tectonic settings,instead of rift volcanic rocks.

The author considers that there are close relationships between the plane form of island-arcs and submarine ridges.

Identification of sustainable development limiting factors and countermeasures of large deep lake——Exemplifying Qiandao Lake drainage area;

Application Research of Ecological Risk Stressors:Nitrogen and Phosphorus Forecasting Models of Water Body of Qiandao Lake;

Analysis of the spatial and temporal changes in chlorophyll-a concentration in Qiandao Lake and its (impact) factors;