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Author publications

Valerian Novac

7 linked publication records

Author: Valerian Novacclear all
Showing 1-7 of 7 records
1
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 21st SGEM International Multidisciplinary Scientific GeoConference Proceedings 2021, Water Resources. Forest, Marine and Ocean Ecosystems
Publication

NAVAL ACCIDENTS CAUSATIVE FACTORS - A BLACK SEA CASE STUDY

(STEF92 Technology, 2021-12-20, Valerian Novac, Gheorghe Stăvărache, Eugen Rusu)

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Concerning the volume of goods conveyed, maritime transport is leading, and the last period proved that the trend is ascendant. Increased marine traffic leads to raised accident risks. Despite the state of the art marine technology and consistent regulations regarding navigation safety, naval accidents still occur and produce severe damage to assets, human life, and the marine environment. The paper presents the main types of naval accidents, focusing on the Black Sea basin, a sea with a complicated status regardi...

Marine and Ocean Ecosystems2021
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 21st SGEM International Multidisciplinary Scientific GeoConference Proceedings 2021, Energy and Clean Technologies
Publication

ON THE ABATEMENT OF SHIPPING EMISSIONS - A POTENTIAL APPROACH FOR THE BLACK SEA BASIN

(STEF92 Technology, 2021-12-20, Valerian Novac, Eugen Rusu)

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It is well known that more than 80% of globally traded goods are conveyed by maritime means of transportation. The shipping activities cannot be performed without emitting harmful gases and particles. The Black Sea basin has a consistent shipping activity accompanied by air emissions. The said basin also complicates the pollution with hydrocarbons or litter point of view, air emissions placing an additional burden on the Black Sea basin environment. We assessed the quantity of the main harmful components of the em...

Air Pollution and Climate Change2021
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 20th International Multidisciplinary Scientific GeoConference Proceedings SGEM 2020, Water Resources. Forest, Marine and Ocean Ecosystems
Publication

BALLAST WATER MANAGEMENT IN THE BLACK SEA BASIN

(STEF92 Technology, 2020-09-20, Valerian Novac, Luminița Moraru, Florin Onea, Eugen Rusu)

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Being an almost landlocked sea, the Black Sea has a particular situation regarding water exchange and circulation. Moreover, the anthropogenic pressure and shipping related activities worsen the situation of this sea from the pollution point of view. The introductory part of the article presents the role of the ballast water system onboard ships in a few words. Then, the paper presents the environmental context of the Black Sea with the focus on the wind and waves, factors which can affect the ship stability. The ...

Marine and Ocean Ecosystems2020
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 20th International Multidisciplinary Scientific GeoConference Proceedings SGEM 2020, Energy and Clean Technologies
Publication

LONG TERM PREDICTION OF WIND SPEED WITH ARTIFICIAL NEURAL NETWORKS

(STEF92 Technology, 2020-09-20, Gheorghe Stăvărache, Valerian Novac, Sorin Ciortan, Eugen Rusu)

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The paper presents a methodology, based on artificial neural networks, for the offshore wind speed values long-term prediction. One of the most available renewable energy is the wind energy. The offshore wind turbines placement presents some benefits comparing with onshore one, like lower environmental impact and long-term stability of surroundings geometry. Of course, there are also drawbacks, like difficult set-up and maintenance or expensive transmission systems for the converted energy. Over all, the off-shore...

Ecology and Environmental Protection2020
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 20th International Multidisciplinary Scientific GeoConference Proceedings SGEM 2020, Informatics, Geoinformatics and Remote Sensing
Publication

SHIP ROUTING IN THE BLACK SEA BASED ON DIJKSTRA ALGORITHM

(STEF92 Technology, 2020-09-20, Valerian Novac, Eugen Rusu, Carmen Gasparotti, Gheorghe Stăvărache)

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In the precursory section of the paper, the authors succinctly present the Black Sea basin's oceanographic features with a focus on factors that can lead to naval accidents. The Black Sea basin is characterized, especially in winter months, by sudden storms, big waves, and winds, seriously affecting the ships and crews' safety. The said basin has also confined areas with pleasure crafts and commercial ships, offshore platforms with accompanying auxiliary fleet and underwater pipes and installations or shallow wate...

Informatics2020
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 19th International Multidisciplinary Scientific GeoConference SGEM2019, Energy and Clean Technologies
Publication

AIR EMISSIONS FROM SHIPS - WESTERN BLACK SEA CASE STUDY

(STEF92 Technology, 2019-06-20, Valerian Novac)

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Economic activities in the Black Sea basin are various and multiple. Seaborne trade between countries from Asia, Africa, and Europe together with exploiting continental shelf hydrocarbon resources involve an intense maritime transport activity. Harmful gas emissions from ships unavoidably accompany these activities. The latest reports indicate that ships' emissions are the primary air pollutant with a destructive impact on climate change and human health. In this respect, the most sensitive area is the coastal one...

Air Pollution and Climate Change2019
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 19th International Multidisciplinary Scientific GeoConference SGEM2019, Water Resources. Forest, Marine and Ocean Ecosystems
Publication

BLACK SEA OIL SPILLS - PREVENTIVE AND REMEDIAL ACTIONS

(STEF92 Technology, 2019-06-20, Valerian Novac)

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The Black Sea is referred to as a continental or semi-enclosed sea being connected with the Mediterranean Sea by Bosporus and Dardanelles straits and with the Azov Sea by Kerch Strait. The volume of water exchanged with the Mediterranean Sea is modest; thus the waters under 100 m depth are known as anoxic, and a high concentration of H2S is present. Taking into account its particular situation is a piece of evidence that even small slicks of oil discharged from operational purposes or by accident seriously affect ...

Marine and Ocean Ecosystems2019
Showing 1-7 of 7 records
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