In this Paper, it is
preliminarily concluded that the ML4.8 earthquake in
Dongyuan is not clearly correspond to the water level change of Xinfengjiang
reservoir, and there would be slim chance for a larger earthquake in the
epicentral area in the short term.It is indicated in the on-site macroseismic
survey that, the major axis of the VI isoseismal curve in the meizoseismal area
is in the direction of NNW. The principal compressive stress of the seismic
source stress field as reflected by the focal mechanism solution is in the
direction of NWW, the same direction with the regional tectonic stress
field;and the seismogenic structure of this earthquake should be in the
direction of NNW, but no surface fault appears around the epicentral area.