Sastrugi dunes, and the resulting drifting snow shapes are also popularly referred to as "barchans". Inuit of Canada call them "kalutoqaniq". When winds slacken, the drifted formations consolidate via sublimation and recrystallization. Subsequent winds erode kalutoqaniq into the sculptured forms of sastrugi. Inuit call large sculpturings "kaioqlaq" and small ripples "tumarinyiq". Further erosion may turn "kaioqlaq" back into drifting "kalutoqaniq". An intermediate stage of erosion is "mapsuk", an overhanging shape. On the windward side of a ridge, the base erodes faster than the top, producing a shape like an anvil tip pointing upwind. Sastrugi are more likely to form on first-year
Surface wave inversion dispersion data: Bulletin of the Seismological Society of America, v. 86, p. 436-444. Kallivokas, L.F., Fathi, A., Kucukcoban, S., Stokoe II, K.H., Bielak, J., Ghattas, O., (2013). Site characterization using full waveform inversion: Soil Dynamics and Earthquake Engineering, v. 47, p. 62-82. Foti, S., Lai, C.G., Rix, G.J., and Strobbia, C., (2014). Surface Wave Methods for Near-Surface Site Characterization, CRC Press, Boca Raton, Florida (USA), 487 pp., <https://www.crcpress.com/product/isbn/9780415678766> Surface wave inversion Seismic inversion involves the set of methods which seismologists use to infer properties through physical measurements. Surface-wave inversion is the method by which elastic properties, density, and thickness of