In order to improve persistence and acoustic capabilities of a Slocum underwater glider, the wings have been re-designed and a linear array of eight elements has been placed along their leading edges. In this configuration the lift/drag ratio has increased by about 15-20% with an angle of attack (AoA) of 4° with respect to the original wing configuration. The best directivity performances have been obtained for a sound signals frequency around 2 kHz. According to the literature review, this may be useful for cetaceans passive acoustic monitoring (PAM).

This paper describes the MAREGOT (MAnagement des Risques de l'Erosion cotière et actions de GOuvernance Transfrontalière) approach to evaluate hydro-mophodinamic behaviuos using different methods on embayed beach in eastern Liguria (Mediterranean NW). Project aimed at the joint prevention and management of the risks arising from coastal erosion in the cooperation area; It is strategic project of 2014 - 2020 INTERREG V Italy - France (Maritime). The research was composed by field surveys, coastal modelling and remote sensing; as a first step, investigation was conducted comparing two topo-batimetric surveys which were made six months apart. At same time coastal video monitoring, composed by two cameras, was used to evaluate principal surface currents; coastal model XBeach was computed to simulate hydrodynamic evolution. In all three applied methods, results came out cross-shore flow close to coastal structures, which could be used by local authorities to define coastal manager plan, evaluating risks related to seaward flows for bathers.

As technological advances nowadays allow for long-term, high-frequency deep-sea monitoring studies, the collected datasets are increasing in size and diversity. As a consequence, together with the need for larger-scale management, the issue of the standardization of data collection and treatment and the comparability between datasets of distinct sources is being raised. This study presents examples of data treatment steps followed, in order to ensure that the datasets collected during a period of 5 years by the Internet Operated Deep-sea Crawler “Wally" meet high quality standards and are adequate for the production of reliable results to monitor of the Barkley Canyon methane hydrates site, off Vancouver Island (BC, Canada). In addition to internationally established automated procedures, different standardizing, normalizing and detrending methods can be used on a case-by-case basis, depending on the nature of the treated oceanographic variable and the range and scale of the values provided by each different sensor.

During the last days of October 2018 a very deep low pressure system from the west Mediterranean, generated a very strong southerly pressure gradient resulted in the most intense phenomena at the last decades relating to Liguria coasts, causing unusual widespread damages. In this study were presented the analysis and the description of the sea-storm dynamic occurred on 29 October 2018. During the event, over Ligurian sea (North Western Mediterranean) were observed strong, organized and stationary thunderstorms, storm wind gusts and an intense sea-storm, hitting the entire Ligurian coast characterized by very rough to high sea state and a nearly oceanic peak wave period.

HF-radar systems are commonly employed for detecting the upper sea currents. Nevertheless, the signal of such systems can be further post-processed for characterizing as well the wave characteristics, though this is a recent application whose reliability has not been yet exhaustively investigated. In this work, we evaluate HF-radar measures of significant wave height, wave mean period and incident direction against the outcomes of two numerical models previously validated. The comparison is developed in the Gulf of Naples (hereinafter GoN), taking advantage of three antennas placed in the locations of Castellamare di Stabia, Portici and Sorrento. First, a wave hindcast defined on a regional scale is employed; then, wave data are downscaled through a local model defined over a finer resolution (local scale). The agreement between the systems is evaluated through statistical error indexes. Results show good consistency, leaving room for deepening the use of radars for wave data collection.