Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Laboratory-Scale Simulation of Spiral Plumes in the Mantle   On the basis of laboratory simulation a mechanism is established for the
formation of the upper mantle convection spiral plumes from a hot point in the
presence of a roll-type large-scale convective flow. The observed plume has
horizontal sections near the upper limit, which may lead to the formation of
chains of volcanic islands.

4
The categories of this paper are: cond-mat
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The categories of this paper are: hep-lat
16
The categories of this paper are: stat
0
The categories of this paper are: hep-ph
35
The categories of this paper are: mtrl-th
30
The categories of this paper are: q-alg
15
The categories of this paper are: nucl-ex
24
The categories of this paper are: dg-ga
33
The categories of this paper are: plasm-ph
25
The categories of this paper are: patt-sol
14
The categories of this paper are: math-ph
29
The categories of this paper are: funct-an
36
The categories of this paper are: cmp-lg
21
The categories of this paper are: adap-org
5
The categories of this paper are: gr-qc
26
The categories of this paper are: bayes-an