This paper presents the results of an experimental study of the seabed liquefaction beneath standing waves. Silt (with d50=0.070 mm) was used in the experiments. Two kinds of measurements were carried out: pore water pressure measurements and water surface elevation measurements. These measurements were synchronized with video recording of the liquefaction process from the side. The ranges of the various quantities in the experiments were wave height H=5.9–12.0 cm, wave period T=1.09 s, and water depth h=30 cm. The experiments show that the seabed liquefaction under standing waves, although qualitatively similar, show features different from that caused by progressive waves. The pore water pressure builds up (or accumulated) in the areas around the node and subsequently spreads out toward the antinodes. The experimental results imply that this transport is caused by a diffusion mechanism with a diffusion coefficient equal to the coefficient of consolidation. The experiments further show that the n...

HIGHLIGHTS. Discussing the spatiotemporal variations of drought using in situ observations and satellite-based datasets.Applying the hybrid MODWT–EEMD–K-means m

Açanal, L., Loukogeorgaki, E., Yagci, O., Kirca, V.S.O. and Akgül, A., 2013. Performance of an inclined thin plate in wave attenuation In practice, in some cases, tandemly applied pile-mounted horizontal or inclined thin plates emerge as functional coastal structures in terms of diminishing wave height in front of Rubble Mound Breakwaters (RMBs) and consequently, reduce the required armor unit size and RMB's overall weight. In this study, the hydrodynamic performance of an Inclined Thin Plate (ITP) under regular waves is experimentally investigated. The objective of the laboratory experiments is the assessment of the ITP's efficiency in terms of wave attenuation. Various inclination angles in combination with different submergence degree of the structure under various wave conditions are examined. Regarding the examined ITP configurations, three different inclination angles are considered, i.e. 5, 10, and 15 deg as well as a horizontal plate on the free surface. For the inclined configurations, I...