Robust smooth magnetotelluric transfer functions

Jimmy C. Larsen,’ Randall L. Mackie,2 Adele Man~e l l a ,~ Adolfo Fiordelisi4 and Shirley Rieven2 ‘Pacific Marine Environmental Laboratory, National Oceanic and Atmospheric Administration, 7600 Sand Point Way NE, Seattle WA 981 15-0070 USA ’ Wassachusetts Institute of Technology, 42 Carleton Street, Cambridge, M A 02142, USA CNR-International Institute for Geothermal Research, Piazza Soljerino 2, Pisa 56126, Italy ENEL, Esplorazione Mineraria, Via Andrea Pisano, 120 Pisa 56122, Italy

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