-
- Nadia Senechal
- EPOC, UMR 5805, University Bordeaux, OASU, CNRS Talence France
-
- Giovanni Coco
- National Institute of Water and Atmosphere Hamilton New Zealand
-
- Karin R. Bryan
- Department of Earth and Ocean Sciences University of Waikato Hamilton New Zealand
-
- Rob A. Holman
- College of Oceanic and Atmospheric Sciences Oregon State University Corvallis Oregon USA
抄録
<jats:p>Video measurements of wave runup were collected during extreme storm conditions characterized by energetic long swells (peak period of 16.4 s and offshore height up to 6.4 m) impinging on steep foreshore beach slopes (0.05–0.08). These conditions induced highly dissipative and saturated conditions over the low‐sloping surf zone while the swash zone was associated with moderately reflective conditions (Iribarren parameters up to 0.87). Our data support previous observations on highly dissipative beaches showing that runup elevation (estimated from the variance of the energy spectrum) can be scaled using offshore wave height alone. The data is consistent with the hypothesis of runup saturation at low frequencies (down to 0.035 Hz) and a hyperbolic‐tangent fit provides the best statistical predictor of runup elevations.</jats:p>
収録刊行物
-
- Journal of Geophysical Research: Oceans
-
Journal of Geophysical Research: Oceans 116 (C7), 1-, 2011-07
American Geophysical Union (AGU)