Aircraft Bow Wave

I am lucky (?) enough to have aircraft occasionally pass directly over my location - although usually at some reasonable altitude like 5000 ft.

The blue dot is me and that is a Boeing 777.

I have noticed that these passes include a little low-frequency transient near the start.

here is a close-up of the low frequency wave - it is just one pulse:

It has occurred to me that this may be a “bow wave” from the plane.

wing-2023-06-19 10_51_25-Bow Wave

I wonder if anyone else has seen the same?
The plane was at 4500 feet.


This is definitely cool! Thank you for sharing it with us.

I have never noticed something like this, but it is easy to miss as I mostly focus on helicopters (and big planes are always too high (30+k ft) when they cross over my location.

But other BOOMs close to airports could have recorded something similar.