We test the hypothesis that ocean seafloor pressures impart stresses that alter the initiation or termination of transient slow slip events (SSEs) on shallow submarine and near‐coastal faults, using simulated seafloor pressures and a new catalog of SSEs in the Hikurangi subduction zone. We show that seafloor pressures may be represented by an average time history over the ~100‐km dimensions of the study area. We account for SSE uncertainties and the multiplicity of processes that affect SSEs statistically by estimating the probabilities of rejecting the null hypothesis that SSE initiation or termination pressures are those to be expected by chance sampling of known (modeled) seafloor pressures, with low probabilities indicating some causal connection. No impact of ocean pressure changes on SSE initiation is detectable, but a correlation with their terminations is suggested. SSE slip that weakens the fault and makes it more sensitive to small stress changes may explain results.

中文翻译：

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海洋对滑坡事件的影响

我们使用模拟的海底压力和Hikurangi俯冲带中的SSE的新目录，检验了海底压力施加的应力改变了浅潜艇和近海断层上的瞬时慢滑事件（SSE）的启动或终止的假设。我们表明，海底压力可以由研究区域约100 km范围内的平均时间历史来表示。我们通过估计拒绝以下假设的概率来解释SSE的不确定性和统计上影响SSE的过程的多样性：SSE初始压力或终止压力是通过已知（模型化）海底压力的偶然采样所预期的零假设的概率，而低概率表明某些因果关系。没有海洋压力变化对SSE启动的影响，但建议与其终止相关。SSE滑动削弱了断层，使其对较小的应力变化更加敏感，这可以解释结果。