Global Active Earthquake Faults

Faults are where two pieces of Earth's crust meet and are associated with movement. Sometimes they move suddenly, generating an earthquake. According to the USGS, there are several types of faults, characterized by how the two pieces are moving relative to each other: Normal Fault: where the upper block moves downward relative to the lower block Thrust Fault: where the upper block move up and over the lower block Strike-slip: where two blocks slide past each other. The mapping of active faults has been done by many organizations around the world, and the Global Earthquake Model Foundation (GEM) has been aggregating that information into a single dataset, available in this layer. Additional information on the contributors can be found here, along with links to the original data with more detailed movement and source information. Use and constraints: This layer was created for mapping purposes, not in-depth analysis. Expected data updates: none断层（fault）是地球地壳两块板块的交界地带，伴随有相对运动。当断层发生突然错动时，便会引发地震。据美国地质调查局（USGS）统计，根据两块板块的相对运动方式，断层可分为多种类型：正断层（Normal Fault）：上盘相对于下盘向下滑移；逆冲断层（Thrust Fault）：上盘相对于下盘向上仰冲并覆盖于其上方；走滑断层（Strike-slip Fault）：两块板块沿断层面相互侧向滑动。全球范围内诸多机构已完成活动断层的测绘工作，全球地震模型基金会（Global Earthquake Model Foundation, GEM）将这些信息整合为单一数据集，并以本图层形式对外提供。有关数据贡献者的更多信息，以及包含更详细运动参数与来源信息的原始数据链接，均可在此处获取。使用与限制说明：本图层仅用于测绘用途，不支持深度分析。预计无数据更新计划。