Is this an example of cloud seeding?

I've had my eyes to the skys a lot lately, and have seen plenty of linear trails here and there, but on the way to work this morning I saw this. It may be something common, but it's the first I've seen. Is this cloud seeding? It's not the best picture but it was outside my work...I didn't want people seeing me standing around taking picture of clouds, you know how it is:

[atsimg]http://files.abovetopsecret.com/images/member/236b96d2f51a.jpg[/atsimg]

A “Hole Punch” cloud is a non-technical name given to a cloud formed from an aircraft dissipation hole or trail. They are also called "Punch Hole" clouds. Rather than extending as a line, Hole Punch clouds appear as a circular or oval hole in a deck or thin layer of supercooled water clouds. They are not uncommon where jet flight paths intersect altocumulus or cirrocumulus layers.

No, cloud seeding involves either towering cumulonumber storms for rainfall enhancement, or stratiform winter storms for snowfall increase.

This is a picture of cloud seeding.

Originally posted by yeebsy
A “Hole Punch” cloud is a non-technical name given to a cloud formed from an aircraft dissipation hole or trail. They are also called "Punch Hole" clouds. Rather than extending as a line, Hole Punch clouds appear as a circular or oval hole in a deck or thin layer of supercooled water clouds. They are not uncommon where jet flight paths intersect altocumulus or cirrocumulus layers.

Thats correct

I would also like to add that falling ice crystals, or vriga....from cirrus clouds also create this affect in altocumulus clouds