Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Hurricane Excitation of Earth Eigenmodes   A non-conventional vertical seismometer, with good low-frequency sensitivity,
was used to study earth motions in Macon, Georgia USA during the time of
hurricane Charley, August 2004. During its transitions between water and land,
the powerful storm showed an interesting history of microseisms and also
generated more than half-a-dozen surprisingly coherent oscillations, whose
frequencies ranged from 0.9 to 3 mHz.

26
The categories of this paper are: bayes-an
34
The categories of this paper are: chem-ph
14
The categories of this paper are: math-ph
8
The categories of this paper are: hep-ex
37
The categories of this paper are: supr-con
2
The categories of this paper are: math
13
The categories of this paper are: quant-ph
19
The categories of this paper are: eess
6
The categories of this paper are: astro-ph
30
The categories of this paper are: q-alg
28
The categories of this paper are: alg-geom
4
The categories of this paper are: cond-mat
21
The categories of this paper are: adap-org
0
The categories of this paper are: hep-ph
32
The categories of this paper are: atom-ph
5
The categories of this paper are: gr-qc