Υποθαλάσσιες κοιλάδες στη Μεσόγειο και στις ελληνικές θάλασσες

Ζάνταλης, Αλέξανδρος; Zantalis, Alexandros

dc.contributor.author	Ζάνταλης, Αλέξανδρος	el
dc.contributor.author	Zantalis, Alexandros	en
dc.date.accessioned	2018-02-15T10:58:06Z
dc.date.available	2018-02-15T10:58:06Z
dc.date.issued	2018-02-15
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/46507
dc.identifier.uri	http://dx.doi.org/10.26240/heal.ntua.7875
dc.description	Εθνικό Μετσόβιο Πολυτεχνείο--Μεταπτυχιακή Εργασία. Διεπιστημονικό-Διατμηματικό Πρόγραμμα Μεταπτυχιακών Σπουδών (Δ.Π.Μ.Σ.) “Ναυτική και Θαλάσσια Τεχνολογία και Επιστήμη”	el
dc.rights	Default License
dc.subject	Υποθαλλάσιες κοιλάδες	el
dc.subject	Μεσόγειος Θάλασσα	el
dc.subject	Αιγαίο Πέλαγος	el
dc.subject	Ιζήματα	el
dc.subject	Πυθμένας	el
dc.subject	Submarine canyos	el
dc.subject	Mediterranea Sea	el
dc.subject	Aegean Sea	el
dc.subject	Sediment	el
dc.subject	Sealfoor	el
dc.title	Υποθαλάσσιες κοιλάδες στη Μεσόγειο και στις ελληνικές θάλασσες	el
dc.title	Submarine canyons at Mediterranean and greek sea	en
heal.type	masterThesis
heal.classification	ΘΑΛΑΣΣΙΑ ΕΠΙΣΤΗΜΗ	el
heal.language	en
heal.access	free
heal.recordProvider	ntua	el
heal.publicationDate	2018-01-17
heal.abstract	Submarine canyons have been the subject of research for along time. Shepard (1972) refers to a study from as early as the late nineteenth century, carried out by Milne (1897), which looked at the instability of canyon floor sediments as a possible cause for the repeated breaking of submarine cables that had been laid across a canyon. However, as a result of the steep terrain, locally enhanced current sand occasional down-canyon flushing events, the initial submarine canyon investigations were extremely challenging, and the number of studies was limited. Acoustic methods had to deal with excessives catter and noise, in-situ instruments were regularly washed away and the coarse canyon thalwegs and rocky walls proved difficult to sample. Direct observations were limited to shallow waters, within reach of divers or early submarines. With the increasing availability of new sampling and surveying technologies (deep-towed acoustic instruments, drop-down video systems, and eventually robotic vehicles), submarine canyon research increased dramatically. Particularly the advent of Remotely Operated Vehicles (ROVs) in many research institutes in the last 10years opened up a new perspective on submarine canyons, allowing a wider community of researchers to access parts of the deep ocean that had been hidden until then. As a result of this increased research effort, our understanding of submarine canyons is gradually growing. A number of individual canyon systems have received considerable attention, but most canyons around the world have not yet been studied, or only to a very limited extend. Further- more, many of the studies carried out so far are focussing on one aspect (geology, geomorphology, sediment dynamics, hydrography, current patterns, mega-, macro-, meio fauna distribution, biogeochemistry…) of a single canyon or canyon system. The time seems right to start putting all those pieces of the jigsaw together, and to start looking at canyons in a more holistic way. To this end, the first International Symposiumon Submarine Canyons was organised in Brest, France in July2012. Canyon research from all over the world was presented, followed by cross-disciplinary discussions and networking. The aim of this thesis is, taking into consideration various studies, to present the submarine canyons morfology and specially around Mediterranean Sea.	en
heal.advisorName	Καψιμαλής, Βασίλειος	el
heal.committeeMemberName	Ρουσάκης, Γρηγόριος	el
heal.committeeMemberName	Ζαραφωνίτης, Γεώργιος	el
heal.academicPublisher	Εθνικό Μετσόβιο Πολυτεχνείο. Σχολή Ναυπηγών Μηχανολόγων Μηχανικών	el
heal.academicPublisherID	ntua
heal.numberOfPages	140 σ.	el
heal.fullTextAvailability	true