The InSight Mission began acquiring the first seismic data on Mars in early 2019 and has detected hundreds of events. The largest events recorded to date originate at Cerberus Fossae, a young volcanic region characterized by high volume, low viscosity lava flows. A handful of Low Frequency (LF) quakes that share key attributes of Long Period quakes recorded on Earth's volcanoes are also traced to Cerberus Fossae. This study explores whether a traditional volcanic source model that simulates the generation of tremor as pressurized fluid makes its way through a channel at depth, can explain these atypical LF events. We consider a wide range of physical parameters including fluid viscosity, the ratio of driving pressure to lithostatic pressure, aspect ratio of the channel, and the equilibrium channel opening. We find that the model can produce the observed seismic signature, with a combination of low‐viscosity magma and high volume flux of ∼10⁴ − 10⁵ m³/s that are within an order‐of‐magnitude agreement with Cerberus Fossae lava flow properties deduced from analysis of lava flow dimensions. It is impossible, however, at this stage to conclude whether or not this is a likely explanation for Mars, as the model results in fluxes that are extreme for Earth yet are just within bounds of what has been inferred for Cerberus Fossae. We therefore conclude that we cannot rule out active magma flow as the mechanism responsible for the atypical LF events that likely originate from Cerberus Fossae.

中文翻译：

---

分析长时期火山地震中地幔小震的低频地震事件

InSight任务于2019年初开始获取火星上的第一批地震数据，并已检测到数百起事件。迄今为止记录到的最大事件起源于火山小地带Cerberus Fossae，这是一个年轻的火山地区，其特征是高流量，低粘度的熔岩流。少数低频（LF）地震具有记录在地球火山上的长期地震的关键属性，也可以追溯到Cerberus Fossae。这项研究探索了一种传统的火山源模型，该模型可以模拟随着压力流体在深度通道中传播而产生的震颤，从而可以解释这些非典型的低频事件。我们考虑了广泛的物理参数，包括流体粘度，驱动压力与岩石静压力的比，通道的纵横比以及平衡通道的开口。⁴  – 10 ⁵  m ³ / s，与通过熔岩流尺寸分析推导出的Cerberus Fossae熔岩流特性在数量级上。但是，在现阶段尚无法得出结论，这是否可能是火星的解释，因为该模型所产生的通量对地球来说是极端的，但仅在Cerberus Fossae的推论范围之内。因此，我们得出的结论是，我们不能排除活跃的岩浆流动作为造成非典型低频事件的机制，而低频事件可能源于地狱犬。