Moment tensor determinations of small earthquakes are quite challenging. It is because their signal‐to‐noise ratio is satisfactory only at frequencies above the microseismic noise peak (∼0.2  Hz), and waveforms can be modeled only up to ∼1–2  Hz at relatively near stations (epicentral distance of a few kilometers). Therefore, the availability of high‐quality waveforms at near stations is the most critical issue. Dense local networks enable solving specific issues like non‐double‐couple (non‐DC) components (e.g., Vavryčuk, 2011), relation with tectonics (Serpetsidaki et al., 2013), and/or even space–time clustering of moment tensors (Cesca et al., 2014)....

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