scholarly journals Construction of large-scale bridge foundation in Osaka coastal zone.

1985 ◽  
pp. 22-29
Author(s):  
Tadao MATUMOTO ◽  
Susumu EMI ◽  
Masahiro KOIKE
Keyword(s):  
Coastal Zone ◽  
Large Scale ◽  
Bridge Foundation

scholarly journals Effects of a 5-year trawling ban on the local benthic community in a wind farm in the Dutch coastal zone

2014 ◽  
Vol 72 (3) ◽  
pp. 962-972 ◽  
Author(s):  
Magda J. N. Bergman ◽  
Selma M. Ubels ◽  
Gerard C. A. Duineveld ◽  
Erik W. G. Meesters
Keyword(s):  
Coastal Zone ◽  
Benthic Community ◽  
Large Scale ◽  
Wind Farm ◽  
Diversity Index ◽  
Benthic Assemblages ◽  
The North ◽  
Wiener Diversity Index ◽  
Short Period ◽  
Reference Areas

Abstract As part of a large impact study in a wind farm (OWEZ) in the Dutch coastal zone, the effects of exclusion of bottom trawling on the benthic community were studied by comparison with nearby reference areas which were regularly fished. In addition to a standard boxcorer for common macrofauna, a Triple-D dredge was used to collect longer-lived, more sparsely distributed infauna and epifauna. Multivariate analysis did not reveal any difference between the assemblages in and outside OWEZ with respect to abundance, biomass, and production after a 5-year closure. The Shannon–Wiener diversity index pointed to a significantly higher diversity in OWEZ compared with some of the reference areas. A minority of the bivalve species assumed to be sensitive to trawling showed higher abundances (Spisula solida) or larger sizes (Tellina fabula, Ensis directus) in OWEZ than in some of the reference areas. In general, samples collected with the Triple-D showed more differences between areas than boxcore samples. No evidence was also found that the species composition in OWEZ relative to the reference areas had changed in the period between 1 (2007) and 5 (2011) years after closure. The change observed in all areas between 2007 and 2011 was mainly due to relatively small variations in species abundances. In conclusion, 5 years after the closure of OWEZ to fisheries, only subtle changes were measured in the local benthic community, i.e. a higher species diversity and an increased abundance and lengths of some bivalves. Depleted adult stocks, faunal patchiness, and a limited time for recovery (5 years) might explain that a significant recovery could not be found. The current study shows that designation of large-scale marine protected areas as planned for the North Sea will not automatically imply that restoration of benthic assemblages can be expected within a relatively short period of years.

scholarly journals PRINCIPLES OF COASTAL AREA & WATERSHED MANAGEMENT (Review: Strategic Plan for Integrated Coastal Management of Lampung)

2018 ◽  
Author(s):  
Riki Rahmad
Keyword(s):  
Coastal Zone ◽  
Coastal Management ◽  
Large Scale ◽  
Coastal Zone Management ◽  
Problem Definition ◽  
Infrastructure Development ◽  
Coastal Zones ◽  
Integrated Coastal Management ◽  
Environmentally Sustainable ◽  
Zone Management

At the World Bank, coastal zone management (CZM) is a part of Integrated Coastal Management (ICM), is an interdisciplinary roomates and Intersectoral approach to problem definition and solutions in the coastal zone, it includes a range of initiatives that promote the environmentally sustainable development of coastal areas, and encompasses a range of activities such as community-based management of coastal resources, large-scale infrastructure development (ports, industrial and residential parks, etc..), pollution and erosion control, aquaculture, tourism and recreation, oil spill contingency planning, and navigational risk assessment.CZM is a process of governance that consists of the legal andinstitutional framework Necessary to Ensure that development and management plans for coastal zones are integrated with environmental and social goals, and are developed with the participation of those affected.The purpose of the ICM is to maximize the benefits providedby the coastal zone and to minimize the conflicts and Harmful effects of activities on social, cultural and environmental resources.

Analysis of Massive Platform Concerte 3-Dimensional Hydration Heat of Corrugated Steel Webs Bridge

2012 ◽  
Vol 511 ◽  
pp. 3-7
Author(s):  
Jun Wang ◽  
Zi Qing Li ◽  
Xian Wu Hao
Keyword(s):  
Large Scale ◽  
Hydration Heat ◽  
Bridge Engineering ◽  
Foundation Engineering ◽  
Finite Element Method Analysis ◽  
Analysis Program ◽  
3 Dimensional ◽  
Massive Concrete ◽  
Bridge Foundation ◽  
Method Analysis

with the continuous development of bridge engineering，the massive concrete has been widely used in large-scale bridge foundation engineering. But it often has the problems of crack and deformation, which infuenced the entirety and durability of the whole structure seriously. In this paper, a hydration heat analysis of the platform of a corrugated steel webs bridge is carried out by using MIDAS/Civil structure finite element method analysis program, the analysis summarizes the temperature distribution regulation of platform concrete influenced by hydration heat and the temperature changing regulation affected by time. Meanwhile, some countermeasures of preventing the crack of concrete are put forward.

scholarly journals APPLICATION OF COMPOSITE GROYNES IN STABILIZING DUBAI BEACHES

2018 ◽  
pp. 8
Author(s):  
Ibrahim Mohammad Juma ◽  
Sankarbabu Karanam ◽  
Alya Abdulrahim Al Harmoudi
Keyword(s):  
Environmental Impacts ◽  
Coastal Zone ◽  
Large Scale ◽  
Beach Nourishment ◽  
Coastal Processes ◽  
Recreational Activities ◽  
Beach Width ◽  
The World

The increase in demand for waterfront living has led to the development of large-scale offshore reclamation projects - The Palm Jumeirah, The World etc., rapidly transforming the coastal zone of Dubai. Development of such offshore islands have interfered with the coastal processes causing reorientation of shorelines at several stretches of Dubai coast (Mangor et al 2008). Regular beach nourishment programs to maintain the required minimum beach width for recreational activities was found to be ineffective due to non-availability of beach quality sand and environmental impacts of dredging and sand shifting operations.

scholarly journals Large-scale patterns of river inputs in southwestern Europe: seasonal and interannual variations and potential eutrophication effects at the coastal zone

2012 ◽  
Vol 113 (1-3) ◽  
pp. 481-505 ◽  
Author(s):  
Estela Romero ◽  
Josette Garnier ◽  
Luis Lassaletta ◽  
Gilles Billen ◽  
Romain Le Gendre ◽  
...  
Keyword(s):  
Coastal Zone ◽  
Large Scale ◽  
Interannual Variations ◽  
Seasonal And Interannual Variations

Review of the effects of non-point nutrient loading on coastal ecosystems

1993 ◽  
Vol 44 (2) ◽  
pp. 261 ◽  
Author(s):  
AJ Gabric ◽  
PRF Bell
Keyword(s):  
Land Use ◽  
Soil Erosion ◽  
Coastal Zone ◽  
Land Use Planning ◽  
Large Scale ◽  
Nutrient Loading ◽  
Algal Growth ◽  
Effective Control ◽  
Nutrient Load ◽  
Northern Adriatic

In many coastal regions (e.g. parts of the North Sea, northern Adriatic Sea, Baltic Sea, Great Barrier Reef lagoon, wider Caribbean, coastal areas of the USA) there is large-scale, and in some cases chronic, eutrophication. In some regions, the link between eutrophication and the destruction of an ecosystem is obvious, with excessive algal growth and water-column anoxia. In other cases, particularly in more fragile ecosystems such as coral-reef and seagrass areas, the links are not so obvious, yet the impacts of eutrophication in such regions can be devastating. Eutrophication can have more insidious effects such as contributing directly to the mortality of fish, marine mammals and sea birds and indirectly to disease or death in humans owing to the accumulation of biotoxins in seafoods. Increased development and changes in land-use patterns in the coastal zone have increased the loading of diffuse or non-point nutrients. In areas subject to runoff and soil erosion, most of the nutrient load is transported in particulate form. In such cases, the loads of nutrients discharged from cropping lands are typically an order of magnitude greater than those discharged from pristine forested areas. Nutrient export from pasture lands, whether these are fertilized or not, is also significantly greater than that from pristine areas, and in many cases the total loads from such areas are far higher than those from intensively farmed areas. A reduction in nutrient discharges to coastal waters will require careful land-use planning. The importance of the particulate fraction in the nutrient load necessitates effective control of soil erosion. The hydrological and nutrient linkage between terrestrial and marine ecosystems must be emphasized. Collective management of hinterland and coastal-zone resources could initiate remediation of a serious and growing problem.

scholarly journals Syntaxonomy of the Festuco-Brometea class vegetation of the Azov sea coastal zone

Hacquetia ◽  
2016 ◽  
Vol 15 (2) ◽  
pp. 79-104 ◽  
Author(s):  
Vitaliy Коlomiychuk ◽  
Denys Vynokurov
Keyword(s):  
Ground Water ◽  
Coastal Zone ◽  
Large Scale ◽  
Steppe Zone ◽  
Forest Steppe ◽  
Sea Of Azov ◽  
Local Data ◽  
Steppe Vegetation ◽  
Azov Sea ◽  
Twinspan Classification

Abstract Syntaxonomy of the class Festuco-Brometea in Ukraine has barely been still explored. There are some scattered and local data, mainly within the Forest-Steppe zone, which need to be compiled and critically reviewed. Similarly, the Azov Sea coastal zone, which, despite the considerable diversity of habitats, remains unstudied phytosociologically. We have carried out large-scale comparisons of relevés from the Sea of Azov coastline with data from other regions of Ukraine, Europe, and Russia. In total, 2336 relevés were used for the analysis. For the analysis, Modified TWINSPAN classification was used. Diagnostic species were determined by means of the phi fidelity index. In total, 9 associations and 4 subassociations, belonging to four alliances, were identified and categorised as follows: Artemisio-Kochion prostratae (ruderalized steppes), Artemisio tauricae- Festucion valesiacae (saline steppe vegetation on sites affected by the sea or saline ground water), Stipo lessingianae-Salvion nutantis (forb-bunchgrass steppe vegetation) and Tanaceto millefolii-Galatellion villosae (bunchgrass steppes). The last alliance is proposed as a new one.

scholarly journals Laying-Down of Large-Scale Caisson at Akashikaikyo Bridge Foundation Work.

1997 ◽  
pp. 27-37
Author(s):  
Satoshi Kashima ◽  
Mitsushige Sakamoto ◽  
Motohiro Suzuki ◽  
Kozo Higuchi
Keyword(s):  
Large Scale ◽  
Bridge Foundation

Exceptional Algal Blooms in Dutch North Sea Waters

1991 ◽  
Vol 24 (10) ◽  
pp. 251-260 ◽  
Author(s):  
W. Zevenboom ◽  
M. Rademaker ◽  
F. Colijn
Keyword(s):  
Coastal Zone ◽  
North Sea ◽  
Algal Blooms ◽  
Large Scale ◽  
Late Summer ◽  
Weather Conditions ◽  
Low Oxygen ◽  
Noctiluca Scintillans ◽  
Toxic Species ◽  
Calm Weather

During airborne and sea-going surveys, phytoplankton composition, and dynamics as well as relevant factors involved, were studied in Dutch North Sea waters. The aim of the study is to increase our understanding of phytoplankton dynamics, the impacts of eutrophication and the measures that are taken to reduce the risk of adverse eutrophication effects. In the coastal zone during spring (April), the relative abundance of diatoms is small when compared with the dominant scum-forming species Phaeocystis pouchetii (71-96% of total). Some potentially toxic species, like Dinophysis acuminata. were present predominantly in late summer and autumn during calm weather conditions, in the coastal zone and northern offshore waters (Oyster grounds, Dogger Bank), but in lower concentrations in 1988 and 1989 when compared with 1976, 1979 and 1981. During these three years Dinophysisacuminata blooms gave rise to mussel infection (DSP) in the Dutch Wadden Sea. The potentially toxic species Gyrodinium aureolum showed higher abundance in somewhat deeper waterlayers than at the surface. The presence of the potentially toxic species Gonyaulax(Alexandrium)tamarensis was for the first time recorded in June 1989 in concentrations of ca. 2000 cells per litre. The results further indicate an increase in occurrence of the non-toxic species Noctiluca scintillans in Dutch North Sea waters. Airborne surveys from 1979 onwards demonstrated an annual occurrence of large-scale surface algal blooms with a total annual area coverage ranging from 30 km2 (in 1982) to 1860 km2 (in 1989). Surface algal blooms are predominantly occurring during May through August, and are likely to be promoted by calm sunny weather conditions, with windforce < 5 Bft over several days. Distinct “stratified” algal layers of some dominant species within an algal patch were observed, with Noctiluca in the top layer, and rather low oxygen concentrations below the large surface algal blooms. Since nutrient availability in Dutch coastal waters has remained rather constant and high over the last 10-15 years, the risks of occurrence of nuisance algal blooms and their adverse effects have remained unchanged.

scholarly journals VULNERABILITY ANALYSIS FOR THE INTEGRATED COASTAL ZONE MANAGEMENT PLAN OF THE CITY OF KAŠTELA IN CROATIA

2019 ◽  
Vol XLII-3/W8 ◽  
pp. 59-63 ◽  
Author(s):  
M. Baučić ◽  
M. Ivić ◽  
N. Jovanović ◽  
S. Bačić
Keyword(s):  
Coastal Zone ◽  
Large Scale ◽  
Action Plan ◽  
Coastal Zone Management ◽  
Management Plan ◽  
Vulnerability Analysis ◽  
Integrated Coastal Zone Management ◽  
Development Fund ◽  
Zone Management ◽  
The City

<p><strong>Abstract.</strong> One of the objectives of the Integrated Coastal Zone Management (ICZM) is to prevent and reduce the effects of natural hazards, particularly ones caused by climate changes. The ICZM methodologies include use of geographic information systems, from data collection and geo-analysis to dissemination of information to the public. As a part of the Interreg MED Co-evolve project cofinanced by the European regional development fund, the ICZM based action plan is being developed for the City of Kaštela in Croatia. Activities include assessing coastal vulnerability to climate change, focusing on sea flooding and storm damages and related socio-economic vulnerabilities. The paper presents development of large scale vulnerability analysis, adopted from the methodologies developed for mid and small scales. Suitability of the available data is assessed, either official or open source, and data gaps are described. The analysis’s results are presented in terms of the assets exposed to coastal flooding and storms, and future improvements of analysis towards house level vulnerability analysis is envisaged.</p>

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