User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.5.1
Hi,
I would like to draw your attention to the script
vertical_section.jnl. Please type
go/help vertical_section
for more details.
Best,
Martin
On 02/08/2017 01:24 PM, Yadidya Badarvada wrote:
Hello Mr. Ryo
My main objective is to find the vertical
structure of the currents flowing parallel to the coast, so
that's why i took a perpendicular section from the coast.
I'm looking to the vertical profile of
the ocean currents 200 km from the
shoreline.
If the shoreline is exactly
perpendicular to any latitude or
longitude then it's very easy to just
select that particular latitude
(longitude) and see get the profile of
the current with varying longitude
(latitude). But unfortunately, most of
the coastlines are not perpendicular to
any lat or long but are at an angle.
So, how do I get the vertical profile of
the current(or anything) perpendicular
from the coast to a certain distance ?
First of all, 200 km in the direction
perpendicular to the coast line may not be what
you want. Let's imagine drawing a curvy coastline.
Let's stick out 200-km-long line segments in the
directions perpendicular to the coastline from
points on the coastline. We'll find some line
segments cross each other when the coastline is
concave. That is, the tips of the line segments
may not form a simple curve.
What I would do instead is first to "paint" the
land. Then I would draw a circle with a 200-km
radius centered at a point on the coastline and
"paint" the area enclosed by the circle. Repeat
this for all the points on the coastline. Then I
would get a new area which is extended by 200 km
from the original land. (If you have ever seen a
map of the EEZ of a country, you get the idea.)
Next find the edge points of this new area
(Somebody posted a Ferret way to detect the edge
of an area in this mailing list). This is the set
of ocean points for which the closest land point
is 200 km away. This is ONE definition of a curve
200 km off the coast.
I would do this all in Fortran but somebody may
help you do it i Ferret.