Unit:
Κατεύθυνση Φυσική ΩκεανογραφίαLibrary of the School of Science
Author:
Totomis Konstantinos
Supervisors info:
Σοφιανός Σαράντης, Επίκουρος Καθηγητής, Τμήμα Φυσικής, Εθνικό και Καποδιστριακό Πανεπιστήμιο Αθηνών
Original Title:
Μελέτη των ροών στον πυθμένα των ανατολικών και δυτικών Στενών του Κρητικού Τόξου και συσχέτισή τους με τα θερμοαλατικά χαρακτηριστικά των πυκνών υδάτινων μαζών και τις ατμοσφαιρικές συνθήκες του Κρητικού Πελάγους
Translated title:
Study of the bottom fluxes through the western and the eastern Cretan-Arc Straits and their correlation with the thermohaline characteristics of the dense water masses and the atmospheric conditions over the Cretan Sea basin
Summary:
The purpose of the present dissertation is to examine the bottom fluxes through the western and the eastern Cretan-Arc Straits and specifically through Antikythira and Kassos Straits at the depths of 895m and 1106m, respectively. Furthermore, the correlation between the bottom fluxes and the thermohaline characteristics of the dense water masses is being examined, as well as the correlation between the bottom currents and the atmospheric conditions over the Cretan Sea basin.
For this work, oceanographic data acquired by current meters and sensors of in-situ temperature and conductivity deployed by the Hellenic Centre for Marine Research (HCMR) were used, as well as atmospheric data from the European Center for Medium-Range Weather Forecasts (ECMWF), covering the period 2015 - 2018.
Analysis of our results revealed that the regime in the Kassos Strait, is characterized by strong dense water outflow whereas the regime in the Antikythira Strait is governed by strong variability. As a general rule, water outflow appears to be more intense during the winter period and the thermohaline characteristics are very well correlated with the dense water masses characteristics of the Cretan Sea. No correlation was observed between the bottom fluxes and the atmospheric parameters such as the mean sea-level pressure and the wind intensity above the Cretan Sea basin.
Main subject category:
Science
Keywords:
Cretan-Arc Straits, Antikythira, Kassos, Bottom Fluxes, Potential Temperature, Salinity, Wind Intensity, Atmospheric Pressure, Spectral Analysis, Correlation Coefficient
