Technology of Seismic Acoustic Detection and Research of River Paleostructures of the Sea Bottom of the Coastal Zone and Its Approbation in Blue Bay

2021 ◽  
pp. 345-356
Author(s):  
A. L. Brekhovskikh ◽  
M. S. Klyuev ◽  
A. E. Sazhneva ◽  
A. A. Schreider ◽  
A. S. Zverev
Author(s):  
Andrzej Reindl ◽  
Jerzy Bolałek

AbstractThis work presents the results of the study on methane emission from the sea bottom in the coastal zone of Puck Bay. The investigations were conducted from June through September 2010 at seven sampling sites located along the Hel Peninsula. The research results indicate that the methane flux rates vary periodically. Methane emission from seabed into near-bottom water in the coastal zone of Puck Bay along the Hel Peninsula ranged from 0.91 mmol m−2 d−1 to 49.15 mmol m−2 d−1.


2003 ◽  
Vol 30 (2) ◽  
pp. 17 ◽  
Author(s):  
VALDIR DO AMARAL VAZ MANSO ◽  
IRAN CARLOS STALLIVIERE CORRÊA ◽  
NÚBIA GUERRA

The analysis of geomorphic and sedimentological characteristics of the inner continental shelf is an important propriety to studies of the coastal zone since they inform the conditions of the sea bottom, the predominant features and the types of associated sediments. Associated to morfodinamic study it can, for example, identify predisposed areas to erosive processes. The present paper shows the batimetry (to -20m) and the sediments distribution in the inner continental shelf between Porto de Galinhas and Campos beaches, south coast of Pernambuco State. The work results constitute pioneering mark in the inner continental shelf of the Pernambuco state.


Author(s):  
V. Vorovka

One of the forms of landscape space organization, a paradynamic landscape system, is considered by the example of the Azov Sea coast. It is based on the idea of the existence of a specific type of landscape systems formed on the border of contrast environments. In this case – on the border of land and water (coastal zone), in other cases – on the border between mountains and plains, highlands and lowlands, forest and deforested landscapes, etc. The existence of such systems is grounded on the functional principle and strength of contrast-based interrelations. As opposed to the traditional landscape science, paradynamic systems are formed on the basis of interacting types of environments, distinct in their properties. In the study area, they are represented by the patches of land and sea bottom adjacent to the shoreline. The functioning of such a system depends not only on the interactions between natural but also on those between man-made landscapes of adjacent land and marine areas and their various modifications. The publication describes the rationale for distinguishing the borders of the paradynamic landscape system. Such a border between land and sea bottom is represented by the line, to which extends the land impact on the sea and that of the marine environment on the coastal land. For the Ukrainian part of the Azov Sea coast these borders are distinguished as follows: on land it is a line of the watershed and climatic influence of the sea, in marine waters it is an isobath, to which extends the effect of waves on the treatment and redeposition of sediments. The structure shaping links in the Azov Sea paradynamic landscape system are defined. The main land impacts on the sea are referred to the river runoff, coastal processes, and human activities. The sea effects on the land are classified as the climate impact, breeze circulation, and migration of living organisms. Specific examples of various links in the system are given. An essential role in the functioning of these systems is played by human actions, which primarily manifests themselves in such coastal activities as fishing, marine transport, recreation and tourism, aquaculture. For the effective management of the shoreline, the borders of paradynamic coastal systems and their system-forming factors should be taken into consideration. A detailed knowledge of the functioning of the Azov paradynamic landscape system is the basis for the integrated management of the coastal zone of the Sea of Azov. The latter, in addition to economic and social matters, requires a deep understanding of specific properties of the coastal environment. We cannot apply here a unified approach, since each coastal zone is characterized by its own unique conditions of the formation, development, and its own resource base thus requiring individual solutions and approaches to its integrated management. Basing on the long-term scientific data, this will enable the implementation of a comprehensive, well-planned and sustainable use of resources, functions and services of coastal zones. As a result, the maximum environmental and socio-economic efficiency of using the area can be reached. The knowledge of the intensity of coastal erosion and accumulation, characteristics of wind and hydrological regimes, characteristics of pollution and migration of contaminants etc. will assist in making adequate management decisions and preventing many unexpected problems in the future.


2020 ◽  
Author(s):  
Teresa Drago ◽  
Rui Taborda ◽  
Sebastião Teixeira ◽  
Marcos Rosa ◽  
João Pedro Cascalho ◽  
...  

<p>Artificial nourishment of sandy beaches using sediment from borrow areas located on the continental shelf is increasingly a recommended solution for reversing the erosion process that affects the coastal zone. However, the impact of sand extraction in the shelf and deposition on the beach on the benthic communities (structure and functioning) is still poorly known, contributing to the lack of information needed for the assessment of Descriptor 6 (Sea-floor integrity) of the Marine Strategy Framework Directive (MSFD).</p><p>The aim of this work is to evaluate the morphological and ecosystem impacts of sand extraction at the inner shelf, as well as the consequent impacts of sand deposition at the nourished beaches. In this context, short-term and long-term monitoring activities based on a multidisciplinary approach were implemented at new and former borrow areas located in the southern Portugal (Algarve) inner continental shelf and adjacent beaches. These activities include multibeam bathymetric surveys complemented by surface sediment sampling, wave and current measurements, and a fluorescent tracer-marked sand experiment. Moreover, benthic macrofauna composition and structure are being studied at borrow areas (former and new) and at the nourished beaches. The acquired data allow a first assessment of the recovery rates regarding the sea-bottom morphology and benthic communities, and contribute to a better understanding of the involved processes.</p><p>The authors would like to acknowledge the financial support FCT through project UIDB/50019/2020 – IDL and ECOEXA project (MAR-01.04.02-FEAMP-0016)</p>


2018 ◽  
Vol 1 ◽  
pp. 1-6
Author(s):  
Erik Biscotti ◽  
Nicola Pizzeghello ◽  
Chiara Murri ◽  
Graziano Colistra ◽  
Ilenia Batzu

The integrated coastal zone management (ICZM) is the modern approach used in the study, management and exploitation of the coastal area in various applications whereas in this area are concentrated interests concerning the most different fields, economic, environmental, legal, scientific and social. The coast is in fact inherently unstable by nature and consequently its characterization should take into account a continuous monitoring and updating of its variations and trends. The coastal area is that portion of land emerged and submerged containing the shoreline and is subject to both continental and marine geomorphic processes. The shoreline is the clearest expression of how this sector is particularly dynamic. Proper analysis and representation of the shape and nature of the coastal area are a first step to provide reliable and comparable tools to those who study and manage it. This paper presents the results of a study aimed to the realization of an integrated approach in the extraction of the shoreline using a case study of Lazio coast as a part of the European Project “Intercoast”.<br> This work is based on national and international directives on the coastal zone, whether linked to a more terrestrial or maritime area, still within the broad definition of Hydrography provided by the International Hydrographic Organization (IHO).<br> The spatial information extracted by direct or indirect measurements of the most dynamic coastal sector emerged and submerged (emerged coast and sea bottom) have been provided by associating with a budget of measurement uncertainties, and assessing the quality.


2009 ◽  
Vol 179 (2) ◽  
pp. 218
Author(s):  
V.I. Kaevitser ◽  
V.M. Razmanov
Keyword(s):  

2015 ◽  
pp. 63
Author(s):  
A. V. Porotov ◽  
Yu. V. Gorlov ◽  
T. A. Yanina ◽  
E. Fouache
Keyword(s):  

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