Study on tectonic stress tensor variation characteristics of Zhangbei earthquake series in 1998;

Wavelet analysis as a tool for revealing geomagnetic precursors of the Zhangbei earthquake;

Research of the field of subsurface fluid anomalies before the Zhangbei earthquake;

Continuous monitoring of focal medium parameters and their changed before Zhangbei earthquake;

The PmP waveform data obtained from a deep seismic sounding profile, which ran through Zhangbei seismic region, were processed by means of both seismic wave complexity coefficient and frequency spectrum analysis methods, and the complexity characteristics of crust-mantle boundary beneath the studied area and its adjacent region were determined.

Study on the prediction of relatively strong aftershocks in earthquake sequence with least square fitting method;

The type of earthquake sequence and distribution characteristics in Ma anshan city and surroundings;

A review and discussion on earthquake sequence research;

In this paper the possibility and the specific method of CORA-3 pattern recognition algorithm are explored for the early synthetic judgement of seismic sequences of strong aftershocks,strong swarms and foreshock-mainshock-aftershock.