Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Efficient depth extrapolation of waves in elastic isotropic media   We propose a computationally efficient technique for extrapolating seismic
waves in an arbitrary isotropic elastic medium. The method is based on
factorizing the full elastic wave equation into a product of
pseudo-differential operators. The method extrapolates displacement fields,
hence can be used for modeling both pressure and shear waves. The proposed
method can achieve a significant reduction in the cost of elastic modeling
compared to the currently prevalent time- and frequency-domain numeric modeling
methods and can contribute to making multicomponent elastic modeling part of
the standard seismic processing work flow.

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The categories of this paper are: q-bio
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The categories of this paper are: supr-con
22
The categories of this paper are: chao-dyn
32
The categories of this paper are: atom-ph
5
The categories of this paper are: gr-qc
23
The categories of this paper are: solv-int
16
The categories of this paper are: stat
25
The categories of this paper are: patt-sol
9
The categories of this paper are: nlin
34
The categories of this paper are: chem-ph
8
The categories of this paper are: hep-ex
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The categories of this paper are: quant-ph
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The categories of this paper are: eess
6
The categories of this paper are: astro-ph
7
The categories of this paper are: hep-th
31
The categories of this paper are: ao-sci