The term debris flow is associated with a wide variety of phenomena as debris slides, debris torrents, debris floods, mudflows, mudslides, hyper-concentrated flows and lahars (in volcanic slopes). In historical times, they frequently occurred in Campania Region (Southern Italy) producing damage and casualties. In this paper, more than 200 events described as “debris flow” between 1924 and 2020 were collected. They are mainly located in the central sector of the region, which is characterized by pyroclastic deposits resting on steep carbonate and volcanic slopes and highly prone to hydrogeological hazards. Debris flow events registered in the region were classified as “gravity processes” (flow-like landslides, FL) or “fluvial processes” (flash floods, FF). This classification is fundamental for designing effective early warning systems and risk mitigation plans, since the two phenomena are triggered by different types of rainfall events and are responsible for damages of different magnitude. In this study, a large rainfall database was explored to identify the time scales and seasonality of the two classes of rainfall events, respectively triggering the two phenomena.

泥石流一词与各种各样的现象有关，例如泥石流，碎石洪流，泥石流，泥石流，泥石流，高浓度泥石流和火山口（在火山坡中）。在历史时期，它们经常发生在坎帕尼亚地区（意大利南部），造成人员伤亡。本文收集了1924年至2020年之间200多个被描述为“泥石流”的事件。它们主要位于该地区的中部，其特征是火山碎屑沉积物位于陡峭的碳酸盐岩和火山斜坡上，极易发生水文地质灾害。该地区记录的泥石流事件被分类为“重力过程”（类似水流的滑坡，佛罗里达）或“河流过程”（如山洪暴发，FF）。此分类对于设计有效的预警系统和风险缓解计划至关重要，因为这两种现象是由不同类型的降雨事件触发的，并且造成了不同程度的破坏。在这项研究中，探索了一个大型降雨数据库，以识别两类降雨事件的时间尺度和季节性，分别触发这两种现象。