VLF <https://en.m.wikipedia.org/wiki/Very_low_frequency> radio waves (3–30 kHz <https://en.m.wikipedia.org/wiki/Hertz>) can penetrate seawater to a depth of approximately 20 meters. Hence a submarine at shallow depth can use these frequencies.
Most of the radars pulse at 200-1000 Hz. Most of the coral disease is in shallow water <20 meters On Tuesday, July 7, 2015, ChemE Stewart <cheme...@gmail.com> wrote: > Except low pulsed frequencies > > On Tuesday, July 7, 2015, James Bowery <jabow...@gmail.com > <javascript:_e(%7B%7D,'cvml','jabow...@gmail.com');>> wrote: > >> >> >> On Tue, Jul 7, 2015 at 1:42 AM, MarkI-ZeroPoint <zeropo...@charter.net> >> wrote: >> >>> This is primarily meant for fellow Vort, ChemEng (Stewart), but some >>> others may have an interest… >>> >>> >>> >>> Stewart, I think I may have a cause for your hypothesis re: a link >>> between our modern radar systems and the dying of coral reefs… >>> >> ... >>> >>> Time to break out the tin-foil hats??? >>> >> >> No need. Salt water shields against EM penetration. >> >
