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1. J. D. Schneiderwind, J. M. Collis, and H. J. Simpson, “Elastic Pekeris waveguide normal mode solution comparisons against laboratory data,” J. Acoust. Soc. Am. 132, EL182EL188 (2012).
2. B. A. McCollom and J. M. Collis, “Root finding in the complex plane for seismo-acoustic propagation scenarios with Green's function solutions,” J. Acoust. Soc. Am. 136, 10361045 (2014).
3. K. Aki and P. G. Richards, Quantitative Seismology ( University Science Books, South Orange, NJ, 2002), Vol. 1, Chaps. 3, 4.
4. S. D. Frank, R. I. Odom, and J. M. Collis, “Elastic parabolic equation solutions for underwater acoustic problems using seismic sources,” J. Acoust. Soc. Am. 133, 13581367 (2013).
5. F. B. Jensen, W. A. Kuperman, M. B. Porter, and H. Schmidt, Computational Ocean Acoustics, 2nd ed. ( Springer Science+Business Media, New York, 2011), Chaps. 2, 5.
6. M. Ewing, W. Jardetsky, and F. Press, Elastic Waves in Layered Media, 1st ed. ( McGraw-Hill, New York, 1957), Chaps. 1, 2.
7. M. D. Collins, “A higher-order parabolic equation for wave propagation in an ocean overlaying an elastic bottom,” J. Acoust. Soc. Am. 86, 14591464 (1989).

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Normal modesolutions to range-independent seismo-acoustic problems are benchmarked against elastic parabolic equation solutions and then used to benchmark the shear elastic parabolic equation self-starter [Frank, Odom, and Collis, J. Acoust. Soc. Am. , 1358–1367 (2013)]. The Pekeris waveguide with an elastic seafloor is considered for a point source located in the ocean emitting compressional waves, or in the seafloor, emitting both compressional and shear waves. Accurate solutions are obtained when the source is in the seafloor, and when the source is at the interface between the fluid and elastic layers.


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