The upward wind or wind in general
I think the answer is A)Natural Springs
It depends on the latitude where you measure it.
It's about 69 miles on the equator, and it shrinks to zero at the poles.
In general, at any latitude,
Distance covered by 1 degree of longitude =
<em> (69 miles) x [ cosine(latitude where it's measured) ]</em>
It's more Southwest of South Korea but yeah it's South it's also East of Hong Kong