Gabriel Díaz-Hernández

University of Cantabria | UNICAN · Department of infrastructures and numerical modeling

SIAAMETOC-OM is an operational metocean system for Naval Support at IHM, able to provide reliable climatologies and predictions in practically any worldwide region, through a user-friendly, GIS-based, graphic user interface (GUI) that can be deployed onboard. Input data are taken from public/official sources through a restricted website, or manuall...

The size of container vessels is continuously growing, always exceeding expectations. Port authorities and terminals need to constantly adapt and face challenges related to maritime infrastructure, equipment, and operations, as these are the principal areas affected by the future Ultra Large Container Vessels (ULCVs). Maneuvring areas are at their...

A new numerical methodology reaching an improved characterization of the historical harbor wave agitation climate is presented in this work. A detailed frequency-direction wave spectrum definition of wave agitation patterns within harbor basins is achieved, providing an in-depth description of the whole multidirectional and multireflective wave pat...

The good performance of the port activities in terminals is mainly conditioned by the dynamic response of the moored ship system at a berth. An adequate definition of the highly multivariate processes involved in the response of a moored ship at a berth is crucial for an appropriate characterization of port operability. The availability of an effic...

An accurate estimation of the historical harbour wave agitation is fundamental for many practical applications, such as port downtime analyses. In practical harbour agitation studies, usually based on numerical propagations from offshore wave climate towards a harbour (wave downscaling), the accuracy in defining the outer wave climate has an impact...

This study presents the new advances achieved in the field of harbour agitation climate assessment. Based on the improvement of an elliptic mild-slope model (MSP), which realistically reconstructs waves inside any-sized basin, represented by high-detailed unstructured meshes, and forced by real-shaped outer spectral data. A new solver is proposed f...

Wave and wind forces from tropical cyclones are one of the main design parameters of coastal and offshore infrastructure in tropical areas. The estimation of ocean waves parameters in the design of structures in tropical areas is difficult due to the complexity of wind fields associated with tropical cyclones. The use of numerical wave models, forc...

Disruptions in harbor operations have significant implications for local, regional and global economies due to ports strategic role as part of the supply chain. A probabilistic evaluation of port operations considering the influence of climate change is required in order to secure optimal exploitation during their useful life. Here, we propose a hy...

Harbors are strategic infrastructures within the local, regional and global economy. The objective of a harbor is to guarantee the safety, serviceability and exploitation of all activities, for each element, and in all project phases. Within this context, Level III Verification Method is recommended for the probabilistic evaluation of failure modes...

This study presents the design, development, scheme and field validation of an early-alert ocean wave system. It is designed to automate, improve, analyse, design and manage the daily construction activities of any harbour at construction stage. The objective is threefold: a) maximise construction safety, with regards to well-known hazards which oc...

The present study shows a methodology to carry out a comprehensive study of port agitation and resonance analysis in Geraldton Harbor (Western Australia). The methodology described and applied here extends the short and long wave hindcast outside the harbor and towards the main basin. To perform such an analysis, and as the first stage of the metho...

We present a high resolution analysis of the interaction of irregular waves with natural and urban structures leading to extreme wave runup. Horizontal runup data, instantaneous flooding maps, and wave propagation beyond the coastline are numerically predicted. The novel methodology combining the Wave Watch III, SWAN and SWASH models to achieve acc...

This study analyzes the historical maritime climate on the coast of Manzanillo (Colima, Mexico), in order to reconstruct 62-year hourly wave statistics for the coastal zone. The analysis was performed by integrating different numerical tools, instrumental measurements and statistical techniques to jointly analyze the processes associated with the p...

This study analyzes the historical maritime climate on the coast of Manzanillo (Colima, Mexico), in order to reconstruct 62-year hourly wave statistics for the coastal zone. The analysis was performed by integrating different numerical tools, instrumental measurements and statistical techniques to jointly analyze the processes associated with the p...

This paper presents a detailed hindcast for the generation and propagation of sea state variables-significant wave height Hs, peak period Tp,mean direction θ, and spectral shape γ -σ -associated with cyclonic events to numerically diagnose their possible hydrodynamic effects over the northeastern Atlantic. An example of such cyclonic events is Hurr...

A new set of experimental data is used in the numerical validation (2DH) of waves propagating towards a scaled harbour facility. The Laredo marina-harbour located at the North coast of Cantabria (Spain), which has lately improved by the extension of its main breakwater, was modelled in the 28 m long and 8.6 m wide directional wave basin of the Envi...

Coastal and offshore structures are subject to a life cycle process including several different phases. From the planning and design phase to the re-use or demolition phase marine climate information is extremely important to achieve cost effective functionality and technical quality. The complete life cycle may span over several decades what requi...

In this work, we present a finite element model to approximate the modified Boussinesq equations. The objective is to deal with the major problem associated with this system of equations, namely, the need to use stable velocity-depth interpolations, which can be overcome by the use of a stabilization technique. The one described in this paper is ba...

The purpose of this work is to a present a numerical model to solve a set of modified Boussinesq equations to analyse nonlinear resonance of semi-enclosed water bodies. The equations are solved on a finite element unstructured grid in order to achieve an optimal mesh resolution with the local geometry. The model is able to simulate long time lapses...