Uncertainty on the legendary extremes detached from the continuous observation of sea levels in extreme value analysis

Abstract

Legendary extremes are recently excessively expected in the public eye to be ultilized for examining the design of coastal defence. Uncertainty accompanied with such legendary extremes has been not enough clear in the statistical literature, thus it has been disregarded in some applications so as to consider the legendary extremes to be having the same quality as the modern measurements have. Unfortunately, if the length of legendary term is unknown, the incremental amout is insignificant in the degree of experience, and it is remarkable that the durability toward the future becomes retreated because the peak shifts farther to the remote past, which will interpret the statistical properties of legendary extremes.