Unexpected focal mechanism for M7.0 earthquake near #Solomon Islands. I would have expected a shallow thrust #earthquake on the #subduction interface, but it appear to be a steep #normal #faulting event. As of yet, only possible #tsunami waves on the nearby Honiara sea level station are a few cms in amplitude.
@jascha Hum the visualization of the block motion for this #earthquake is weird. Anyway, fault plane could be either vertical (dip=89°) or near-horizontal (dip=18°). Distinction between "normal" and "reverse" becomes blurred, I guess. I'd be curious to see the #Sentinel1 #InSAR.
@RaphaelGrandin @jascha
First-motion mechanism (constrained by steeply down-going energy) shows some strike uncertainty (tiny white and grey dots) but is neutral on the question of "normal" or "reverse" - probably the waveform-based mechanisms are too, if uncertainty taken into account. http://alomax.free.fr/projects/early-est/events/hypo.1669082591674.html
