|North Sea flash
imaged by Florian
Schaaf only three days after his I-Mir
sequence. The flash high above the horizon is different,
it is an M-Mir type generated, as in the
previous image, by an inversion
layer above the photographer and curved by vertical waves
in the atmosphere. There were several flashes over 2-3 minutes.
©Florian Schaaf, shown with permission.