USING A BREAKWATER FOR BEACH PROTECTION

Macroinfauna of Wainui Beach, Gisborne - impact of beach protection structures

Sun protection by families at the beach.

BACKGROUND During the last decade, results of surveys of adults showed an increase in sun protection knowledge, a slight decline in the attitude that having a tan was healthy, widespread sunscreen use as the principal method of solar protection, and an increase in sunburning. METHODS During the summer of 1996, observers recorded the sun protection activities of 352 family groups as they arriv...

Solar protection of children at the beach.

BACKGROUND Excessive sun exposure during childhood has been associated with subsequent development of skin cancers. Children have been advised to avoid sun exposure, use protective clothing, and apply sunscreen lotions, but how completely these recommendations are followed has not been studied. OBJECTIVE To determine the extent of sun protection among children visiting lake beaches, the metho...

Numerical Study on Tsunami Hazard Mitigation Using a Submerged Breakwater

Most coastal structures have been built in surf zones to protect coastal areas. In general, the transformation of waves in the surf zone is quite complicated and numerous hazards to coastal communities may be associated with such phenomena. Therefore, the behavior of waves in the surf zone should be carefully analyzed and predicted. Furthermore, an accurate analysis of deformed waves around coa...

A Mathematical Model for Flood Protection

Many regions in the world are protected against flooding by a dike, which may be either natural or artificial. We deal with a model for finding the optimal heights of such a dike in the future. It minimizes the sum of the investments costs for upgrading the dike in the future and the expected costs due to flooding. The model is highly nonlinear, nonconvex, and infinite-dimensional. Despite this...