Transport of floating marine litter in the coastal area of the south-eastern Bay of Biscay: A Lagrangian approach using modelling and observations

Abstract. Two high-frequency (HF) radar stations were installed on the coast of the south-eastern Bay of Biscay in 2009, providing high spatial and temporal resolution and large spatial coverage of currents in the area for the first time. This has made it possible to quantitatively assess the air–sea interaction patterns and timescales for the period 2009–2010. The analysis was conducted using the Barnett–Preisendorfer approach to canonical correlation analysis (CCA) of reanalysis surface winds and HF radar-derived surface currents. The CCA yields two canonical patterns: the first wind–current interaction pattern corresponds to the classical Ekman drift at the sea surface, whilst the second describes an anticyclonic/cyclonic surface circulation. The results obtained demonstrate that local winds play an important role in driving the upper water circulation. The wind–current interaction timescales are mainly related to diurnal breezes and synoptic variability. In particular, the breezes force diurnal currents in waters of the continental shelf and slope of the south-eastern Bay. It is concluded that the breezes may force diurnal currents over considerably wider areas than that covered by the HF radar, considering that the northern and southern continental shelves of the Bay exhibit stronger diurnal than annual wind amplitudes.

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Temperature and salinity variability in the south-eastern corner of the Bay of Biscay (NE Atlantic)

Journal of Marine Systems ◽

10.1016/j.jmarsys.2012.02.010 ◽

2013 ◽

Vol 109-110 ◽

pp. S105-S120 ◽

Cited By ~ 6

Author(s):

R. Somavilla ◽

C. González-Pola ◽

A. Lavín ◽

C. Rodriguez

Keyword(s):

Bay Of Biscay ◽

Ne Atlantic ◽

The South ◽

South Eastern ◽

Salinity Variability

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SACRED AREAS OF SOUTHEAST OF KYIV-PODIL (XI–XIII CENTURIES)

Mìsto ìstorìâ kulʹtura suspìlʹstvo ◽

10.15407/mics2016.01.106 ◽

2017 ◽

pp. 106-128

Author(s):

Mykhailo Sahaidak ◽

Vsevolod Ivakin ◽

Serhiy Taranenko ◽

Дмитро Пефтіць

Keyword(s):

Coastal Area ◽

Extreme Points ◽

Tenth Century ◽

The South ◽

Large Area ◽

South Eastern ◽

Chronological Period ◽

Long Time ◽

New City ◽

Burial Grounds

The article is devoted to sacred areas located in the south-eastern part of Old-Rus Podil district. This area has remained poorly investigated for a long time compared to other areas of this OldKyiv region. Archaeological researches of period 2007–2015 greatly expanded our understanding of the south-eastern part of old Podil. In this paper, we tried to reconstruct the sacred loci of this territory.In the tenth century, Kyiv consisted of a populated town – a large coastal area – Podil and of small sacral-administrative part – Detinets on Zamkova Hill and the necropolis on the Old Kyiv Hill. Due to active development of a new city in the days of the reign of Vladimir son of Svyatoslav and his son Yaroslav the Wise, inhabitants of Podil, now Christians, have had to look for another place to bury their dead. They were forced to look for areas in the territory without mass urban development.Henceforth cemeteries are beginning to play a significant role in shaping the structure of the medieval town of Kyiv-Podil. Several cemeteries were located at the extreme points of the settlement area, which, due to waterlogging and flood threats were unsuitable for life. It was proposed to use the term to define such cemeteries in the structure of ancient Podil – “outlying cemeteries”. Three of these cemeteries and one single burial excavated in the south-eastern part of ancient Podil. Cemeteries found on the Naberezhno-Khreschatytska, 1-а str. and Naberezhno-Khreschatytska, 9 str. belong to the earliest Podol burial grounds, their active functioning on the XI century.The cemetery opened in 2015 at the Postal Square and burial of women (Petra Sagaydachnogo str., 6-в ) belong to another chronological period. They date back to the XII – the first half of the XIII century. Recent studies have shown that a sufficiently large area in the south-eastern outskirts of Old-Rus Podil were unsuitable for settlement and so they are often used for a cemetery.

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Tracking floating marine litter in the coastal area by combining operational ocean modelling and remote observation systems.

10.5194/egusphere-egu21-11465 ◽

2021 ◽

Author(s):

Matthias Delpey ◽

Amandine Declerck ◽

Irati Epelde ◽

Thibaut Voirand ◽

Ivan Manso-Navarte ◽

...

Keyword(s):

Coastal Area ◽

Decision Aid ◽

Monitoring Program ◽

Coastal Ocean ◽

End Users ◽

Ocean Modeling ◽

Video Monitoring ◽

Bay Of Biscay ◽

Transport Modelling ◽

Marine Litter

Keywords: marine litter; coastal ocean modeling; video monitoring; satellite observation; Bay of BiscayThe service &#8220;Floating Marine Litter Tracking&#8221;, or &#8220;FML-TRACK&#8221; is a downstream service from Copernicus Marine Service, aiming at providing an operational support to reduce Floating Marine Litter (FML) in the coastal area. More precisely, FML-TRACK aims at supporting FML reduction strategies both downstream (interception at sea with collect vessels and on beaches with cleaning facilities) and upstream (source identification and reduction), by tracking the dispersion of FML in estuaries and in the coastal ocean. Using a combination of innovative detection technologies and operational metocean modelling, the service produces tailored decision-aid indicators to monitor and guide FML collect operations, including day-to-day operation support in near real time. Guidance offered by these indicators help maximizing the amount of FML removed from the natural environment, while at the same time contributing to reduce the cost and impacts of operations (i.e. cost per kilogram of collected FML, fuel consumption, carbon footprint). Moreover, tracking technologies contribute to the reduction of FML emission at the source, by helping identifying most probable emission sectors depending on metocean conditions.To achieve these purposes, FML-TRACK combines innovative detection solutions based on video monitoring in rivers and satellite imagery in the coastal area, together with metocean-based FML transport modelling. In the operational mode of the service, it provides a decision-aid dashboard supporting day-to-day FML collect operations. The dashboard offers indicators aiming at guiding FML collect operations, to monitor and optimize their efficiency. It especially provides a tracking of FML in the coastal area and a prediction of concentration hotspots to guide collect vessel at sea; and anticipate massive onshore arrivals to help beach cleaning at land.The service was demonstrated in the coastal area of the South-Eastern Bay of Biscay, part of the Iberian-Biscay-Ireland regional seas. It took benefit of pre-existing components developed during the former LIFE LEMA program, which were further improved and complemented to bring the tool and service to a new stage, compatible with a realistic application in an operational context.Main end-users of the service are coastal public administrations involved in the reduction of FML in their region. End-users can also be private companies operating sea or beach cleaning. Fishermen who can be involved in FML collect effort (actively or passively) may also use the service as a support to operations and/or to participate in the monitoring program. Finally, the service may also be of interest for NGOs and scientists committed to the study of and fight against FML, through either participation to the monitoring and/or use of the database for science, awareness and education.

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