TY - JOUR AU - Biesel, F. PY - 1982/01/29 Y2 - 2024/03/29 TI - SECOND ORDER THEORY OF MANOMETER WAVE MEASUREMENT JF - Coastal Engineering Proceedings JA - Int. Conf. Coastal. Eng. VL - 1 IS - 18 SE - Conference Proceedings DO - 10.9753/icce.v18.8 UR - https://icce-ojs-tamu.tdl.org/icce/article/view/3620 SP - 8 AB - The paper refers to pressure gage wave measurements . First order transformation of the pressure spectrum into a surface level spectrum leads to hitherto unexplained discrepancies with prototype simultaneous pressure and level measurements . Use of second order gravity wave theory allows to draw the following conclusions ยป Second order effects appear to give a reasonable explanation of the observed discrepancies . A complete check would require specially made wave measurements and analyses . Second order corrections do not significantly affect mean values, such as significant height, if the manometer depth is not unduly large. ER -