Sky Quakes, Broken Gear, or Something Else.

[Maxmars]

There are a number of reports of earthquakes being registered as having a negative depth which would indicate that the epicenter is in the air. What I have right now is this (which i copied from my post over at ATS if it looks familiar to some):
2.7 quake 0.8km above ground USGS event, page 1 (abovetopsecret.com)

Any ideas or theories?

This was offered as an explanation of negative depths in seismic reports in the Hawaii area... perhaps it's something similar reporting effect(?)
 

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Astute visitors to the USGS Hawaiian Volcano Observatory (HVO) website may have noticed that some recent earthquakes have negative depths. This does not indicate a change in seismicity but, rather, an upgrade in HVO's seismic data processing system.


The new system reports earthquake depths with respect to the common reference elevation, or datum, of sea level. When set to display earthquakes by depth, the HVO website map now includes a dark red color to indicate earthquakes that occur above sea level but below the ground surface. In the earthquake list to the right of the map, some events are now reported with negative depths.

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Not saying this is your answer, but it's worth mentioning.