| 摘要 |
PROBLEM TO BE SOLVED: To provide an earthquake vibration convergence determination system capable of highly accurately determining convergence of each earthquake vibration when earthquake vibrations continue due to a plurality of earthquakes.SOLUTION: An earthquake vibration convergence determination system includes a seismometer and control means including arithmetic means for determining convergence of an earthquake vibration caused by an earthquake from a magnitude of vibration caused by the earthquake vibration continuously observed by the seismometer during the earthquake. The arithmetic means continuously calculates variation per unit time of the vibration from the magnitude of the vibration caused by the earthquake vibration transmitted from the seismometer. The control means, when a state that the obtained variation exceeds a preset threshold range is continued over a preset duration time, determines the convergence of the earthquake. |
