DEPOSIT MONITORING METHOD, SYSTEM, AND COMPUTER PROGRAM, AND DEPOSIT AMOUNT MEASUREMENT METHOD, SYSTEM, AND COMPUTER PROGRAM

摘要

PROBLEM TO BE SOLVED: To monitor the deposit of volcanic ash or the like accurately and measure the amount of deposit even in the presence of diastrophism. SOLUTION: Before and after the deposit of volcanic ash or the like, the ground of the area under monitoring is three-dimensionally measured (S2, S3, S5, S6). In accordance with a common label for a first ground measurement data (DATA1) measured before the deposit and a second ground measurement data (DATA2) measured after the deposit, the position of the first ground measurement data (DATA1) is corrected and is stored as a third data (DATA3) (S7). The difference between the second ground measurement data (DATA2) and the third data (DATA3) is calculated (S8). From the difference data, an isobathic diagram and a cross-sectional diagram are drawn (S9) to calculate the amount of ash fall (S10). A risk is determined (S11), and if the risk is high (S12), a warning is issued, while the execution of disaster prevention is performed (S13). COPYRIGHT: (C)2006,JPO&NCIPI