The topography, ridges or mountains or so, used on the pages with examples has one of the following profiles:

Profiles of the topography, with h_max=0.4 and width w=1.
The default fluid depth away from the topography is 1.

The full cosine (blue line; like the one sketched on the page about the effect of a bottom topography) is used for:

• Lamb dipole crossing a ridge (without background rotation)
• Lamb dipole crossing a ridge -- with background rotation
• Bessel monopole encounters a north-south ridge

The half cosine (red line) is used for:

• Uniform flow across a mountain
• Bessel monopole encounters a circular mountain

Note

The full cosine topography has smooth derivatives everywhere.
The half cosine has a discontinuity in the derivatives at the foot of the topography.

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created: 21 April 1998
last modified: 26 May 2001