That’s in around 3500 feet of water and I’m not sure you would get any measurable seismic readings from a surface impact.
Event TimeNot the Daily Mail or Telegraph, but a US Government website.
2014-03-07 18:55:11 UTC
2014-03-08 00:55:11 UTC+06:00 at epicenter
2014-03-07 10:55:11 UTC-07:00 system time
Location
3.067°N 96.868°E depth=10.0km (6.2mi)
As I was saying late last night, the U.S. Navy’s acoustic sensor network would have picked up the big splash. By triangulation, software would then establish the location and also estimate the size and speed of the aircraft.