Natural hazards such as earthquakes, volcanic activity, and heavy rainfall causing floods and debris avalanches are common phenomena in many tropical settings, including the island of Sumatra, located in the Indonesian archipelago. To enhance our understanding of the recurrence of these often destructive events, we studied the sedimentary infill of two lakes in the Padang highlands, West Sumatra. This includes Lake Singkarak, a tectonically-formed lake located on a step-over of a major strike-slip fault system (the Sumatran Fault), and Lake Maninjau, a caldera lake. Both lakes are located ~300 km from the Sunda subduction trench and surrounded by steep slopes and a chain of active volcanoes. Hence, considering their unique tectonic setting, these lakes may potentially record a wide range of natural hazards that affect the region. A combination of seismic-reflection profiles and short sediment cores revealed that both lakes indeed record various types of natural hazards, each with their own sedimentary response to a specific type of event. Lake Singkarak can be used to study past floods and major debris avalanches in addition to high-magnitude megathrust earthquakes, while traces of past intraplate earthquakes have been identified in both lakes. Furthermore, we argue that Lake Singkarak is an ideal recorder of volcanic activity in the region, while Lake Maninjau itself can pose a volcanic hazard to its surroundings as demonstrated by potential activity of the volcano below the lake.

在包括印度尼西亚群岛的苏门答腊岛在内的许多热带环境中，地震，火山活动和暴雨等大自然灾害导致洪水和碎屑崩塌是常见现象。为了增强我们对这些经常破坏性事件再次发生的认识，我们研究了西苏门答腊巴东高地两个湖泊的沉积填充物。其中包括Singkarak湖（形成于构造上的湖，位于主要走滑断层系统（苏门答腊断裂）的阶梯上）和Maninjau湖（破火山口湖）。这两个湖都位于距the他俯冲trench沟约300公里处，周围都是陡峭的斜坡和一连串活火山。因此，考虑到其独特的构造环境，这些湖泊可能会记录到影响该地区的各种自然灾害。地震反射剖面和短沉积岩心的结合表明，两个湖泊确实记录了各种类型的自然灾害，每种自然灾害对特定事件都有自己的沉积反应。除了高强度的巨推力地震外，Singkarak湖还可以用来研究过去的洪水和主要碎片雪崩，而在这两个湖中都可以发现过去的板内地震的痕迹。此外，我们认为Singkarak湖是该地区火山活动的理想记录者，而Maninjau湖本身可对周围环境构成火山危害，如湖下火山的潜在活动所证明。除了高强度的巨推力地震外，Singkarak湖还可以用来研究过去的洪水和主要碎片雪崩，而在这两个湖中都可以发现过去的板内地震的痕迹。此外，我们认为Singkarak湖是该地区火山活动的理想记录者，而Maninjau湖本身可对周围环境构成火山危害，如湖下火山的潜在活动所证明。除了高强度的巨推力地震外，Singkarak湖还可以用来研究过去的洪水和主要碎片雪崩，而在这两个湖中都可以发现过去的板内地震的痕迹。此外，我们认为Singkarak湖是该地区火山活动的理想记录者，而Maninjau湖本身可对周围环境构成火山危害，如湖下火山的潜在活动所证明。