Port and Airport Research Institute

Probabilistic sustainability evaluation of hybrid breakwaters considering uncertainty in conceptualization and indicator weighting

One of the distinguishing features of hybrid infrastructure is the need to find balance between multiple functional performances. Multi-criteria decision analysis is an ideal tool for exploring this balance and identifying an ideal solution, but there are few examples of its appl...

Bridging the Gap in Tsunami Runup Observations under Rough Sea States: High-Frequency Automated Image Analysis during the 2025 Kamchatka Event

Abstract Following the 2025 Kamchatka Earthquake (Mw 8.8), tsunamis were observed along the Pacific coast of Japan, as well as in many other coastal regions. This study applies an automated image analysis method to video footage from the Hasaki Oceanographical Research Station to...

Measuring Ocean Surface Waves

Abstract Propagating waves on the ocean surface can be represented as a stochastic process whose statistics are characterized by a spectrum. This paper reviews methods for measuring the wave spectrum and related quantities. Observations begin by sensing fluid dynamical properties...