Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: About the Mechanism of Geyser Eruption   Essentially new physical mechanism of geyser eruption based on instability in
"water-vapor" system is proposed. Necessary and sufficient conditions of
eruptions are received. For group of Kamchatka geysers a good accordance of
theoretical model with empirical observations is shown.

19
The categories of this paper are: eess
20
The categories of this paper are: acc-phys
8
The categories of this paper are: hep-ex
25
The categories of this paper are: patt-sol
30
The categories of this paper are: q-alg
15
The categories of this paper are: nucl-ex
33
The categories of this paper are: plasm-ph
26
The categories of this paper are: bayes-an
11
The categories of this paper are: hep-lat
29
The categories of this paper are: funct-an
31
The categories of this paper are: ao-sci
4
The categories of this paper are: cond-mat
18
The categories of this paper are: econ
17
The categories of this paper are: q-fin
23
The categories of this paper are: solv-int
5
The categories of this paper are: gr-qc