Study on method of setting threshold of ground vibration sensor for detecting debris flow
Ground vibration sensors, which are a category of debris flow detectors, have many advantages over other types of detectors, but the fact that there is as yet no established method to determine threshold values for detecting debris flows remains a problem. This study therefore proposes a method of setting threshold of ground vibration sensor for detecting debris flow from the initial waveform and duration of vibration caused by a debris flow by analyzing the waveform of debris flow vibration, paying attention to a sharp increase in discharge at the debris flow front. If a method like this can be used to remove noise, it will be possible to detect debris flows by sensing ground vibrations earlier.
debris flow warning system ground tremor ground vibration sensor data processing
J. Kurihara N. Takezawa T. Yamakoshi T. Yanagimachi
Nagano Prefecture, Nagano, Japan Public Works Research Institute, Tsukuba, Japan
国际会议
成都
英文
603-611
2007-05-17（万方平台首次上网日期，不代表论文的发表时间）