However, more than one buoy was involved in the alarm, both recording the same readings.
然而，该次报警涉及的不只是一个浮标，这两个浮标都记录了同样的读数。
2
The floatage state and Load rule of the buoy is analyzed. The causes are found of the buoy submersing in seawater, the alarm light signal ghosting and the buoy cable breaking off.
This would first be noticed on land, especially land subject to being flooded, as such a change under the sea would escape notice unless a tsunami buoy sounded an alarm.