Naomi Krauzig

Marche Polytechnic University | Università degli Studi di Ancona · Department of Life and Environmental Sciences - DiSVA

Successive CTD profiles of an Argo float trapped within a deep (~1250 m) sub-basin of the North Aegean Sea during 2014–2015 enabled identification of deep-water ventilation episodes and inference of a bulk (budget-based) vertical eddy diffusivity during the period that followed these events. Independent effective eddy diffu­sivity profiles were com...

The Mediterranean Sea is one of the first regions where sea surface temperature (SST) increase was linked to greenhouse effects and global warming. Due to its sensitivity to climate variability and its high impact on local and remote climate conditions, much effort has been made to assess the SST variability in the Mediterranean as a whole. However...

Despite their significant impact on global climate systems, polar oceans remain scarcely observed and insufficiently represented in climate models due to their extreme conditions. Now, autonomous instruments like underwater gliders offer the possibility to capture even fine-scale variations in these conditions. Recognizing their capabilities and...

The Ross Ice Shelf floats above the southern sector of the Ross Sea and creates a cavity where critical ocean-ice interactions take place. Crucial processes occurring in this cavity include the formation of Ice Shelf Water, the coldest ocean water, and the intrusion of Antarctic Surface Water, the main driver of frontal and basal melting. During th...

As Antarctic sea ice extent continues to reach record lows, significant efforts have been directed towards understanding the underlying processes and their regional differences within the Southern Ocean. Here, we explore the dynamics of zonal sea ice transport at the eastern gate of the Ross Sea from 1988 to 2023 using GIOMAS-model and ERA5-reanaly...

This study presents the water column temperature data collected during several cruises on board the Italica, Araon and Laura Bassi research vessels, in the framework of the Climatic Long-term Interaction for the Mass balance in Antarctica (CLIMA), Southern Ocean Chokepoints Italian Contribution (SOChIC), and Marine Observatory of the Ross Sea (MORS...

Climate change is exerting complex and transformative effects in the Arctic and Antarctic; regions that are essential to global climate, biodiversity, and sustainable futures. Given the polar regions’ roles in Earth’s system, a robust, coordinated, and innovative strategy to monitor and manage climate change effects is needed. Insufficient baseline...

The investigation of the spatio-temporal variability of water masses in key sectors of the Ross Sea: their role in Antarctic Bottom Water (AABW) formation & their impact on basal melting of the Ross Ice Shelf

The production of Antarctic Bottom Water (AABW) is a crucial factor in determining the strength of the Meridional Overturning Circulation, and therefore plays a significant role in the ocean's contribution to the global climate. AABW is primarily formed in the Ross and Weddell Seas, with unique thermohaline characteristics. In recent years, a negat...

The Mediterranean Sea is well-known for its sensitivity to climate change, leading to extensive efforts in monitoring the basin as a whole. However, the Mediterranean is composed of individual sub-basins that exhibit different roles in its conveyor belt’s function. Additionally, impacts on societies and ecosystems have been shown to depend primaril...

This dissertation focuses on the Tyrrhenian Sea, a sub-basin of the Western Mediterranean with particular scientific interest. Despite its small size and isolated nature, it plays an important role in the thermohaline circulation of the Mediterranean Sea and portrays one of the most potentially vulnerable sub-basins at the same time. Considering, m...

The Copernicus Ocean State Report is an annual publication of the Copernicus Marine Service, established in 2014 by the European Commission for Copernicus 1 and renewed in 2021 for Copernicus 2. The report provides a comprehensive, state-of-the-art, scientific overview on the current conditions, natural variations, and ongoing changes in the global...

The aim of this multiplatform approach is to evaluate during winter seasons: 1.) the intrusion of warm Circumpolar Deep Water (CDW) or modified CDW (mCDW) under the RIS cavity, which is one of the main drivers of ice-shelf basal melting. 2.) the changes in the Ice Shelf Waters (ISW) from the RIS, which might receive water from the rapidly melting...

The study of the Tyrrhenian deep water properties and their distribution over time and space seems to be particularly relevant to the impact of climatic variability on the Mediterranean Sea. This ongoing work aims to contribute to a better understanding of the thermohaline variability, the main deep-water formation mechanisms, such as heat-salt flu...

In this study, 17 hydrologists with different experience in hydrological modelling applied the same conceptual catchment model (HBV) to a Greek catchment, using identical data and model code. Calibration was performed manually. Subsequently, the modellers were asked for their experience, their calibration strategy, and whether they enjoyed the exer...

The North Aegean Sea is considered as a region of deep water formation in the Mediterranean. Dense water formation events are known to take place rather infrequently and in the time intervals between such events, the bottom waters are excluded from interaction with other water masses through advection. Successive CTD profiles of an ARGO float trapp...

The effluent from a vertically integrated alumina and aluminum production and (since the late 2000s) thermal electric power production plant located on Antikyra bay in the Gulf of Corinth is being examined. This study processes satellite sea surface temperature and chlorophyll-a data and examines the possibility of thermal pollution from the alumin...

Successive CTD profiles of an ARGO float trapped within a deep sub-basin of the North Aegean Sea during 2014-2015 enabled the identification of deep-water ventilation episodes and the determination of effective vertical eddy diffusivity during the stagnation period that followed these events. The assumption of turbulent mixing between the intermedi...

This thesis discusses the Vertical Mixing in the North Aegean Sea based on the profiles collected by the MedArgo float sensor nr. 6901884, which has been trapped in the Athos Basin. The analyzed vertical and seasonal hydrographic characteristics indicate that there have not been any deep water formation episodes for the examined time (2014-2015). I...

This project was carried out within the course Satellite Oceanography under the academic supervision of Konstantinos Topouzelis. The main object of this study was to classify and map the underwater habitats in a shallow coastal area northeast of the Greek island Lesvos. This was done by a combination of high spatial resolution WorldView-2 imagery a...