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Experiences of Debris-Flow Monitoring and Warning at Catchment Scale in the Pyrenees

机译：比利牛斯集水区泥石流监测与警告的经验

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Abstract Debris-flow monitoring improves the understandings of debris flows and also provides fundamental information for an efficient early warning and alarm system (EWAS), which commonly focuses on ground vibration and flow depth. Preliminary results from the Senet station (Central Pyrenees, Spain) show that monitoring is a complex task, especially if different torrential processes should be distinguished using merely geophone data. Video images are not useful for an EWAS, but strongly improves the analysis, because they allow to identify the flow type and to characterise the ground vibrations corresponding to each type. In addition, an EWAS can also be based on triggering rainfall patterns, which have to be defined by a one-parameter o multi-parameter condition. Our first experiences on the possible implementation of an EWAS at Senet test site are promising, but indicate the complexity regarding the critical rainfall conditions, the definition of reliable thresholds to avoid false alarms and the difficulties related to technical shortcomings.
机译：摘要碎片流动监测可提高碎片流动的理解，并提供有效的预警和报警系统（EWAS）的基本信息，该系统通常侧重于地面振动和流量深度。 Senet Station（中央比利牛斯，西班牙）的初步结果表明，监测是一个复杂的任务，特别是如果应该使用仅仅使用地震检波器数据区分不同的洪流过程。视频图像对EWA没有有用，但强烈提高了分析，因为它们允许识别流量类型并表征与每种类型对应的地面振动。此外，EWA也可以基于触发降雨模式，这必须由一个参数O多参数条件定义。我们对Senet测试网站可能实施EWAS的第一次经验是有希望的，但表明有关临界降雨条件的复杂性，可靠的阈值的定义，以避免虚假警报和与技术缺点有关的困难。

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