Waves of sand and snow and the eddies which make them . n April 15, 1900, withja light off-shore wind, the sands exposed at lowtide were mostly smooth, but in the low, ornarrow, depression parallel to the beach there werewell-preserved sand-waves, the crests of which wereat right angles to the shore, whereas the crests ofripple-mark formed by waves are parallel to theshore. The length of the sand-waves was 4 the afternoon the wind came on to blowwith moderate force in a long-shore direction, andnext day the sand-waves in the low had a lengthof 11 feet 6 inches. The large sand-waves
Waves of sand and snow and the eddies which make them . n April 15, 1900, withja light off-shore wind, the sands exposed at lowtide were mostly smooth, but in the low, ornarrow, depression parallel to the beach there werewell-preserved sand-waves, the crests of which wereat right angles to the shore, whereas the crests ofripple-mark formed by waves are parallel to theshore. The length of the sand-waves was 4 the afternoon the wind came on to blowwith moderate force in a long-shore direction, andnext day the sand-waves in the low had a lengthof 11 feet 6 inches. The large sand-waves on the North GoodwinSands are evidently formed by currents, not byswell. I visited this sandbank on May 12, ridges faced in a northerly direction—, wereopposed to the waves and to the light wind pre-vailing at the time. The reason why they facedwith the flood and not with the ebb was evidentlythat the higher sands to the north were uncoveredthree and a half hours after high water, whereasthe ebb current does not commence until four and. Plate 69.—Tidal sand-waves at right angles to tlie sea shorein a low, or depression ; at Mundesley. |IBMBj8ii^!WB!°;3g£*j^^ vm •^m»miJ^:^rW-i tSaWWl! iiHBia*m*wiw mm
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Keywords: ., bookcentury1900, bookdecade1910, bookidwavesofs, booksubjectwaves
