Crustal thickness estimation using P receiver function (PRF) for seismometers deployed on ice sheets is difficult because of reverberation in the ice sheet. The strong reverberation in ice sheets is due to the large acoustic impedance ratio of ice-to-crustal rock (about 4.5). Consequently, such reverberation could disturb multiples from the crust-mantle boundary in PRFs and cause unstable inversion of PRFs for velocity model (Dahl-Jensen et al. 2003; Lawrence et al. 2006).

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Therefore, direct use of PRFs for crustal thickness estimation from stations on the ice sheet could be open to misinterpretation (Lawrence et al...

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