A theoretical model is developed for wave heights and set-up in a surf zone. In the time averaged equations of energy and momentum the energy flux, radiation stress and energy dissipation are determined by simple approximations which include the surface roller in the breaker. Comparison with measurements shows good agreement. Also the transitions immediately after breaking are analysed and shown to be in accordance with the above mentioned ideas and results.

/pdf/wave-heights-and-set-up-in-a-surf-zone-39q6lqmhg5.pdf

Wave Heights and Set-up in a Surf Zone

Assessing the inherent uncertainties in satellite data products is a challenging task. Different technical approaches have been developed in the Earth Observation (EO) communities to address the validation problem which results in a large variety of methods as well as terminology. This paper reviews state-of-the-art methods of satellite validation and documents their similarities and differences. First, the overall validation objectives and terminologies are specified, followed by a generic mathematical formulation of the validation problem. Metrics currently used as well as more advanced EO validation approaches are introduced thereafter. An outlook on the applicability and requirements of current EO validation approaches and targets is given.

https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1002/2017RG000562

Validation practices for satellite-based Earth observation data across communities

Multi-decadal variations in delta shorelines and their relationship to river sediment supply: An assessment and review

A comparison of methods to estimate peak wind loads on buildings

Wavelet bicoherence analysis of wind–wave interaction

Extreme value distributions for peak pressure and load coefficients

http://www.aast.edu/pheed/staffadminview/pdf_retreive.php?url=28285_353_12_NOVELTECHNIQUE.pdf&stafftype=staffpdf

A novel technique in analyzing non-linear wave-wave interaction

This study investigates the stability of the Rosetta Promontory shoreline on the Nile Delta over the period 1988–95, and especially the effect of the revetments constructed between 1986 and 1991 on the western and eastern parts of the promontory. A computer code is developed to calculate the volumetric changes along the promontory, and a numerical model, developed by the Danish Hydraulic Institute, is used to calculate the sediment transport. The results generated by this model are compared with those computed from beach profile data. The study shows that the shoreline along Rosetta Promontory is still unstable and that the revetments have not been efficient enough to stop erosion.

/pdf/accretion-and-erosion-patterns-along-rosetta-promontory-nile-42nkr83vgd.pdf

Accretion and Erosion Patterns along Rosetta Promontory, Nile Delta Coast

A new procedure to derive the distribution of peak pressure and load coefficients from individual sample records is applied to wind tunnel records obtained from a generic flat-roof model tested at the Univ. of Western Ontario (UWO). The initial step of this procedure requires the identification of the appropriate marginal probability of these records. The corresponding distribution of the peaks is then obtained with the use of the standard translation process. Predicted load coefficients over variable tributary areas as determined from UWO records and based on a preset probability of non-exceedence are compared with the provisions of the ASCE 7 standard. Based on the open-terrain observations, the code provisions generally correspond to relatively low levels of nonexceedence of 84% or less. The ASCE 7 suggested method to estimate the peak pressure coefficients for the suburban environment based on those for the open terrain could be successfully applied to the UWO observations. This, however, is generally not true when performing a similar estimation procedure for peak load coefficients from the Clemson experiments.

http://www.aast.edu/pheed/staffadminview/pdf_retreive.php?url=28285_353_24_PEAKWIND-STRUCTURENG.pdf&stafftype=staffpdf

Mohamed A. K. Elsayed

Papers

Wavelet bicoherence analysis of wind–wave interaction

Extreme value distributions for peak pressure and load coefficients

A novel technique in analyzing non-linear wave-wave interaction

Accretion and Erosion Patterns along Rosetta Promontory, Nile Delta Coast

Peak wind load comparison : Theoretical estimates and ASCE 7