Nouvelles observations sur l'environnement sédimentaire de la Formation d'Escuminac (Dévonien supérieur, Frasnien), Québec, Canada

1991 ◽  
Vol 28 (2) ◽  
pp. 225-230 ◽  
Author(s):  
Daniel Vézina
Keyword(s):  
Marine Environment ◽  
Western Australia ◽  
Upper Devonian ◽  
Baltic Countries ◽  
Coastal Marine Environment ◽  
Coastal Marine ◽  
Geochemical Study ◽  
The Baltic ◽  
New Evidence

The comparison of certain genera representative of the ichthyofauna of the Escuminac Formation (Quebec, Canada) with those coming from contemporaneous deposits (Upper Devonian, Frasnian) located in the Baltic countries (U.S.S.R.), Western Australia, Nevada (U.S.A.), and Germany provides new evidence against a lacustrine origin of the Escuminac Formation. It is suggested that the Escuminac Formation was deposited in a coastal marine environment. This hypothesis is supported by results of a geochemical study.

The impact of urban effluents on the coastal marine environment of Mediterranean islands

1995 ◽  
Vol 32 (9-10) ◽  
pp. 85-94 ◽  
Author(s):  
Michael O. Angelidis
Keyword(s):  
Heavy Metals ◽  
Organic Matter ◽  
Marine Environment ◽  
Suspended Particle ◽  
Pollution Source ◽  
Mediterranean Islands ◽  
Coastal Marine Environment ◽  
Coastal Marine ◽  
The Impact ◽  
The City

The impact of the urban effluents of Mytilene (Lesvos island, Greece) on the receiving coastal marine environment, was evaluated by studying the quality of the city effluents (BOD5, COD, SS, heavy metals) and the marine sediments (grain size, organic matter, heavy metals). It was found that the urban effluents of Mytilene contain high organic matter and suspended particle load because of septage discharge into the sewerage network. Furthermore, although the city does not host important industrial activity, its effluents contain appreciable metal load, which is mainly associated with the particulate phase. The city effluents are discharged into the coastal marine environment and their colloidal and particulate matter after flocculation settles to the bottom, where is incorporated into the sediments. Over the years, the accumulation of organic matter and metals into the harbour mud has created a non-point pollution source in the relatively non-polluted coastal marine environment of the island. Copper and Zn were the metals which presented the higher enrichment in the sediments of the inner harbour of Mytilene.

Covid19 Lockdown Effects on a Coastal Marine Environment: Disentangling Perception Versus Reality

2021 ◽  
Author(s):  
Federica Braga ◽  
Daniele Ciani ◽  
Simone Colella ◽  
Emanuele Organelli ◽  
Jaime Pitarch ◽  
...  
Keyword(s):  
Marine Environment ◽  
Coastal Marine Environment ◽  
Coastal Marine

Outfall Inspections, Token Repairs, and Major Remedial Works

2007 ◽  
Vol 41 (2) ◽  
pp. 4-11 ◽  
Author(s):  
Robert A. Grace
Keyword(s):  
Marine Environment ◽  
Remedial Measures ◽  
Remotely Operated Vehicles ◽  
Coastal Marine Environment ◽  
Coastal Marine

The coastal marine environment is fraught with risk for any exposed or minimally-buried seabed structure such as an outfall. Thus, conduits of this type should be inspected on a regular basis, whether by divers, remotely operated vehicles, or manned submersibles. Small deficiencies may be handled upon detection by the same person or system. Major problems will require a competent marine contractor and an elapse of time. The paper lists a number of outfall malfunctions of various scales and, in most cases, the remedial measures pursued. With care, a typical pipe of this type should function efficiently for many years.

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