Quantitative comparison of two collocated seafloor hydrophone arrays in a shallow coastal water environment

1997 ◽  
Vol 102 (5) ◽  
pp. 3119-3119 ◽  
Author(s):  
J. Mark Stevenson ◽  
Steven L. Schmidt ◽  
Gerald L. D’Spain ◽  
William S. Hodgkiss
Keyword(s):  
Coastal Water ◽  
Water Environment ◽  
Quantitative Comparison

A Fundamental Study on the Influences of Submarine Groundwater Discharge on Coastal Water Environment

2008 ◽  
Author(s):  
Shigeru Tabeta ◽  
Tsuguki Kinoshita
Keyword(s):  
Coastal Water ◽  
Early Stage ◽  
Water Discharge ◽  
Water Environment ◽  
Fundamental Study ◽  
Budget Analysis ◽  
Discharge Velocity ◽  
Submarine Groundwater ◽  
Coastal Sea ◽  
Terrestrial Water

It has been considered that most of the terrestrial water and contained substances are supplied into the ocean through the rivers. However, recent studies show that the submarine ground-water discharge (SGD) is also significant as the route of water and substances from the land to the ocean. In order to evaluate the influences of SGD on the coastal water environment, it is important to investigate the amount of SGD flux into the sea as well as the behaviour of discharged water and substances in the coastal sea. In the present study, the total SGD flux is estimated by the budget analysis of the target sea area, in which a parameter for water exchange between the coastal sea and the ocean is calculated by means of a numerical simulation by a hydro-dynamic model and a dynamic budget model. The behaviour of discharged groundwater is also investigated by hydraulic experiments and numerical simulations using non-hydrostatic model. It is found that the early-stage behaviour of the discharged submarine groundwater as buoyant plume could be categorized into three types due to the ratio of discharge velocity to the background horizontal current velocity.

USING OF MULTI-YEAR REMOTE SENSING DATA FOR THE NEVA BAY AND THE EASTERN GULF OF FINLAND FOR REVEALING PECULIARITIES OF ANTHROPOGENIC IMPACTS OF HYDRO-TECHNICAL FACILITIES BUILDING AND DREDGINGS ON THE COASTAL AND WATER ENVIRONMENT

2017 ◽  
Author(s):  
Leontina Sukhacheva ◽  
Leontina Sukhacheva
Keyword(s):  
Remote Sensing ◽  
Coastal Water ◽  
Anthropogenic Impacts ◽  
Water Environment ◽  
Water Dynamics ◽  
Spatiotemporal Variability ◽  
Gulf Of Finland ◽  
Anthropogenic Factors ◽  
Neva Bay

This paper is devoted to the use of long-term remote sensing (RS) data for assessment of anthropogenic impacts on the coastal water environment of the Neva Bay (NB) and the eastern part of the Gulf of Finland (EGOF), caused by construction of hydro-ingineering facilities, operations for land reclamation, dredging and underwater dumping. The study period includes past four decades for which airborne and satellite data are available. Results of using long-term RS data sets for monitoring and studying coastal water environment, for estimation of levels of water contamination by suspended matter (SM), for revealing spatiotemporal variability of SM distribution under the influence of natural and anthropogenic factors, for studying features of surface water dynamics and of phytoplankton development, are discussed.

scholarly journals Does Coastal Local Government Competition Increase Coastal Water Pollution? Evidence from China

2020 ◽  
Vol 17 (18) ◽  
pp. 6862
Author(s):  
Weiteng Shen ◽  
Qiuguang Hu ◽  
Xuan Yu ◽  
Bernadette Tadala Imwa
Keyword(s):  
Water Pollution ◽  
Local Government ◽  
Coastal Water ◽  
Fixed Effects ◽  
Positive Impact ◽  
Water Environment ◽  
Significance Test ◽  
Pressure Group ◽  
Fiscal Pressure ◽  
The Impact

China has formulated many policies and regulations for the management of the coastal water environment. However, the coastal water environment has not been significantly improved. The perspective of local government competition can provide an explanation for this phenomenon. This study uses panel data comprising 48 coastal cities in China from 2004 to 2017 as bases explore the impact of coastal local government competition on coastal water pollution by using a two-way fixed-effects panel regression model. Results show that coastal local government competition increased coastal water pollution. However, a sub-sample estimation based on fiscal pressure shows that coastal local government competition only increased the coastal water pollution of the high fiscal pressure group, and its impact on the coastal water pollution in the low financial pressure group failed to pass the significance test. In addition, sub-sample estimation based on different periods shows that the impact of coastal local government competition on coastal water pollution was not significant before 2008, but showed a significant positive impact after 2008.

USING OF MULTI-YEAR REMOTE SENSING DATA FOR THE NEVA BAY AND THE EASTERN GULF OF FINLAND FOR REVEALING PECULIARITIES OF ANTHROPOGENIC IMPACTS OF HYDRO-TECHNICAL FACILITIES BUILDING AND DREDGINGS ON THE COASTAL AND WATER ENVIRONMENT

2017 ◽  
Author(s):  
Leontina Sukhacheva ◽  
Leontina Sukhacheva
Keyword(s):  
Remote Sensing ◽  
Coastal Water ◽  
Anthropogenic Impacts ◽  
Water Environment ◽  
Water Dynamics ◽  
Spatiotemporal Variability ◽  
Gulf Of Finland ◽  
Anthropogenic Factors ◽  
Neva Bay

This paper is devoted to the use of long-term remote sensing (RS) data for assessment of anthropogenic impacts on the coastal water environment of the Neva Bay (NB) and the eastern part of the Gulf of Finland (EGOF), caused by construction of hydro-ingineering facilities, operations for land reclamation, dredging and underwater dumping. The study period includes past four decades for which airborne and satellite data are available. Results of using long-term RS data sets for monitoring and studying coastal water environment, for estimation of levels of water contamination by suspended matter (SM), for revealing spatiotemporal variability of SM distribution under the influence of natural and anthropogenic factors, for studying features of surface water dynamics and of phytoplankton development, are discussed.

scholarly journals Coastal water environment regulation and simulation based on tidal power control

2018 ◽  
Vol 246 ◽  
pp. 02027 ◽  
Author(s):  
Hua Wang ◽  
Wei Xu ◽  
Pei Liu ◽  
Jinhe Zhu
Keyword(s):  
Coastal Water ◽  
Water Exchange ◽  
Spring Tide ◽  
Water Environment ◽  
Coastal Areas ◽  
Water Diversion ◽  
Quality Model ◽  
Water Control ◽  
Tidal Power ◽  
Effect Of Water

As the carrier of water resources, water environment and water ecology, river course is very important to human and ecological environment in coastal areas. The rapid economic development of coastal areas needs to take into account the improvement of regional water environment in order to achieve a higher level of development. The characteristics of coastal water environment are closely related to tidal fluctuation. It is an important direction for coastal water control to improve the water environment and restore the self-purification capacity of the river by guiding and draining the tidal power. In this paper, the YACHONG River Basin, which borders Macau and Zhuhai, is selected as the study area. The semi-exchange period and water exchange rate are taken as the main evaluation indexes. The water quantity and quality model is used to simulate the scenario model and analyze the effect of water diversion and drainage regulation in different tidal periods. The results show that, compared with the drainage dispatch during spring tide, the drainage dispatch during neap tide prolongs the water exchange time, and the effect of water exchange is obviously better than that during spring tide. The research results of this paper provide reference for water environmental regulation in coastal area.

Full-field tomography and Kalman tracking of the range-dependent sound speed field in a coastal water environment

2009 ◽  
Vol 78 ◽  
pp. S382-S392 ◽  
Author(s):  
Olivier Carrière ◽  
Jean-Pierre Hermand ◽  
Jean-Claude Le Gac ◽  
Michel Rixen
Keyword(s):  
Coastal Water ◽  
Sound Speed ◽  
Water Environment ◽  
Full Field

Tourism Impact Assessment on Coastal Water Environment - A Case Study on HangZhou Bay North Shore in Shanghai

2012 ◽  
Vol 518-523 ◽  
pp. 5203-5208
Author(s):  
Shi Dong Liu ◽  
Jun Gao ◽  
Dong Qian Xue
Keyword(s):  
Coastal Water ◽  
Environmental Quality ◽  
Water Body ◽  
Hot Spot ◽  
Water Environment ◽  
Hangzhou Bay ◽  
Environment Impact ◽  
North Shore ◽  
Water Environmental Quality

The study on tourism environment impact on coastal area has been a hot spot for coastal ecological environment research in our country. Based on grey recognition mode, this Paper analyzes the water environment quality of Shanghai Hangzhou Bay north shore coastal artificial bathing place in the spatial-temporal perspectives and researches the impacts of coastal tourism activities on water environment. The research results reveal that: (1) Coastal artificial bathing place is beneficial for protecting and improving coastal water environmental quality and different management modes on coastal artificial bathing place present different temporal features on protection of coastal water body; (2) In tourist peak season, environmental management improves the surrounding water environmental quality of artificial bathing place; (3) In the same coastal artificial bathing place, with different water body purification technologies and different influence mechanism, the tourism activities shows different levels of impact on water environment.

scholarly journals Coastal water environment suitability studies for green mussel cultivation in Pasaran Island, Lampung Bay

2019 ◽  
Author(s):  
Arief Wicaksono ◽  
Wahyu Lazuardi ◽  
Ariani Puji Astuti ◽  
Tika Maitela ◽  
Andiyanti Putri Estigade ◽  
...  
Keyword(s):  
Coastal Water ◽  
Water Environment ◽  
Green Mussel ◽  
Mussel Cultivation
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