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04. Solid Earth::04.02. Exploration geophysics::04.02.05. Downhole
3
and other methods
3
radioactivity
3
remote sensing
ice thickness measurements
2
radio echo sounding
2
radio glaciology
2
02. Cryosphere::02.03. Ice cores::02.03.09. Instruments and techniques
1
glacier ice tongues
1
ground penetrating radar
1
radioglaciology
1
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