Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Acoustic- and elastic-waveform inversion with total generalized
  p-variation regularization   Geophysical models usually contain both sharp interfaces and smooth
variations, and it is difficult to accurately account for both of these two
types of medium parameter variations using conventional full-waveform inversion
methods. In addition, sparse geometry, noisy data and source encoding usually
lead to strong inversion artifacts. We develop a novel full-waveform inversion
method for acoustic and elastic waves using a total generalized p-variation
regularization scheme to address these challenging problems. We decompose the
full-waveform inversion into two subproblems and solve these two minimization
subproblems using an alternating-direction minimization strategy. One important
advantage of the total generalized p-variation regularization scheme is that it
can simultaneously reconstruct sharp interfaces and smooth background
variations of geophysical parameters. Such capability can also effectively
suppress the noises in source-encoded inversion and sparse-data inversion, or
inversion of noisy data. We demonstrate the advantages of our new full-waveform
inversion algorithm using a checkerboard model, a modified elastic SEG/EAGE
overthrust model, and a land field seismic dataset. Our results of synthetic
and field seismic data demonstrate that our new method reconstructs both smooth
background variations and sharp interfaces of subsurface geophysical properties
accurately, reduces the inversion artifacts caused by source encoding, noisy
data or insufficient data coverage effectively, and provides a useful tool for
accurate and reliable inversion of field seismic data.

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The categories of this paper are: cond-mat
15
The categories of this paper are: nucl-ex
19
The categories of this paper are: eess
24
The categories of this paper are: dg-ga
12
The categories of this paper are: nucl-th
17
The categories of this paper are: q-fin
37
The categories of this paper are: supr-con
28
The categories of this paper are: alg-geom
27
The categories of this paper are: comp-gas
32
The categories of this paper are: atom-ph
18
The categories of this paper are: econ
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The categories of this paper are: hep-ph
29
The categories of this paper are: funct-an
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The categories of this paper are: cs
35
The categories of this paper are: mtrl-th
10
The categories of this paper are: q-bio