| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for monitoring crustal movement with which abnormality is captured before occurrence of abnormal crustal movement by monitoring crustal movement while improving analysis accuracy and analysis result reliability and an abnormal crustal movement occurrence area can be identified, a method for identifying an abnormal crustal movement occurrence area and a crustal movement monitoring system. <P>SOLUTION: Positions, on three-dimensional orthogonal coordinates, of observation points with the center of gravity of the earth as an origin are observed and a movement amount of the position of each observation point is determined for each component of the three-dimensional orthogonal coordinates. A plurality of items of stable movement data in the year in which abnormal crustal movement does not occur are extracted from movement data for each of components of the observation points time-series for a plurality of years, and a reference line 11 of an annual movement distortion cycle is set on the basis of a plurality of items of stable movement processing data from which noise components of crustal reversible movement/irreversible movement have been removed. New movement data 12 are compared with the reference line 11, the presence/absence of deviation of the new movement data 12 from the reference line 11 is confirmed and if the deviation is confirmed from any factor other than noise components, it is determined that abnormal crustal movement may occur. <P>COPYRIGHT: (C)2013,JPO&INPIT |
