(a) (b)
Scheme 2. in sub-figure (a) the red curve line
corresponds to the H, constructed from the path swept out by the tips of
the scaled e2 eigenvectors, shown in mid
blue, and is defined by the equation mentioned in section 2.2. In
sub-figure (b) the pale blue curve line corresponds to the
H*, constructed from the path swept out by the tips of
the scaled e1 eigenvectors, shown in
magenta, and is defined by the equation mentioned in section 2.2. The
mid-blue and magenta arrows representing thee2 ande1 eigenvectors are scaled by the
ellipticity ε respectively, where for visualization purposes the
vertical scales are magnified. The green sphere shows the position of a
given BCP 48.