### ASA 126th Meeting Denver 1993 October 4-8

## 3aAO11. Error analysis of ocean acoustic tomography due to internal waves.

**J. Gozani
L. Boden
**

**
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*Cooperative Inst. for Res. in Environmental Sci./NOAA, Campus Box 449,
Boulder, CO 80309-0449
*

*
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A realistic error analysis of the temperature variability of the oceans as
probed by ocean acoustic tomography is presented. Travel-time errors resulting
from fluctuating internal and surface waves are important in the analysis of
the averaged time delays, which may indicate global warming trends due to the
greenhouse effect. The 3-D propagation models through random media are
extremely complicated. Propagation of model equations is governed by a set of
matrix differential equations, whose elements are obtained by multidimensional
oscillatory integration. Analytical and numerical studies have been conducted
that show the feasibility of computing the matrix elements 1000 times faster
than was previously done. The matrix equation is solved by well-known ordinary
differential equation methods. The effects of frequency, trajectory,
sound-speed profile, bathymetry, and the variances of internal and surface
waves will be discussed.