SEALEVEL

and its perturbations

by Ben Oostdam
What is the meaning of "level" ??

(1) - perturbations by winds, waves, tides, earthquakes, volcanism, seafloor spreading rates, meteor impact, temperature, ....
(2) - "serendipitous" discovery from satellite that seasurface resembles subdued bathymetry, say 10-3 x

(3) - slopes of 10-5 (1cm/km)
will cause currents
of 2 knots (100cm/sec) ....

Westward Intensification of
Boundary Currents

make sketch of
N. Atlantic seasurface

(4) - "GLOBAL WARMING"

melting of icecaps

rising sea level


.... have been around longer than newspapers
from Patrick L. Abbott: "Natural Disasters", 1996
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