iceice accretionice capice crystalice crystal hazeice flowersice fogice limitice melt pointice multiplicationice nucleationice pelletsice pressureice prismicelandic lowicingidenticidentifiableidentificationidentifieridentifyidentityifiltration indexiiiuvial horizoniiiuviationimhoff coneimpactimpact basinimpact forceimpact jet angleimpermeabilityimpermeableimpermeable rockimperviousimpervious bedimpervious soilimperviousess coefficientimplementationimplerimpounding reservoirimpoundmentimprtance samplingimpulse response functionimpulse wavein situinception pointinceptisolsincipient cavitationincipient erosionincised meander