The Raton Basin has been an area of injection induced seismicity for the past two decades. Previously, the reactivated fault zone structures and spatiotemporal response of seismicity to evolving injection have been poorly constrained due to sparse publicly available seismic monitoring. The application of a machine-learning phase picker to 4 years of continuous seismic data from a local array enables the detection and location of ∼38,000 earthquakes. The events from 2016 to 2020 are ∼2.5–6 km below sea level and range from M_L < −1 to 4.2. Most earthquakes occur within previously identified ∼N-S zones of seismicity, however our new catalog illuminates that these zones are composed of many short faults with variable orientations. The two most active zones, the Vermejo Park and Tercio zones, are potentially linked by small intermediate faults. In total, we find ∼60 short (<3 km long) basement faults with strikes from WNW to NNE. Faulting mechanisms are predominantly normal but some variability, including reverse dip-slip and oblique-slip, is observed. The Trinidad fault zone, which previously hosted a M_w 5.3 earthquake in 2011, is quiescent during 2016–2020, likely in response to both slow accumulation of tectonic strain after the 2011 sequence, and the significant decrease (80% reduction) in nearby wastewater injection from 2012 to 2016. Unlike some other regions, where induced seismicity was triggered in response to higher injection rates, the Raton Basin's frequency-magnitude and spatiotemporal statistics are not distinguishable from tectonic seismicity. The similarity suggests that seismicity in the Raton Basin is predominantly releasing tectonic stress.

中文翻译：

---

拉顿盆地诱发的地震活动是由短基底断层和模拟构造地震统计网络承载的

在过去的二十年里，拉顿盆地一直是注入诱发地震活动的地区。以前，由于稀疏的公开可用的地震监测，重新激活的断层带结构和地震活动对演化注入的时空响应受到很大限制。将机器学习相位选择器应用于来自本地阵列的 4 年连续地震数据，能够检测和定位约 38,000 次地震。2016 年至 2020 年的事件在海平面以下约 2.5-6 公里，范围为 M _L < -1 到 4.2。大多数地震发生在先前确定的 ~NS 地震活动带内，但是我们的新目录表明这些带由许多方向可变的短断层组成。两个最活跃的区域，Vermejo Park 和 Tercio 区域，可能被小的中间断层连接起来。我们总共发现了 60 个短（<3 公里长）基底断层，其走向从 WNW 到 NNE。断层机制主要是正常的，但也观察到了一些变化，包括反向倾滑和斜滑。特立尼达断层带，以前承载 M _w2011 年 5.3 级地震，2016-2020 年处于静止状态，可能是由于 2011 年序列后构造应变的缓慢积累，以及 2012 年至 2016 年附近废水注入量显着减少（减少 80%）。 与其他一些地区不同，在响应较高注入率而触发诱发地震活动的情况下，拉顿盆地的频率幅度和时空统计与构造地震活动无法区分。这种相似性表明拉顿盆地的地震活动主要是释放构造应力。