2D numerical modelling of bed profile changes due to tsunami effects on near shore coasts: Kadikoy case study

2005 ◽  
Vol 51 (11) ◽  
pp. 231-238
Author(s):  
M.S. Kabdasli ◽  
V.S. Ozgur Kirca ◽  
A. Aydingakko
Keyword(s):  
Sediment Transport ◽  
Coastal Region ◽  
Coastal Structures ◽  
Tsunami Waves ◽  
Near Shore ◽  
Wave Heights ◽  
Profile Changes ◽  
Vertical Changes ◽  
Set Up

This study was aimed at the investigation of tsunami effects on the seabed profile as these may be important for coastal structures, like sea outfalls or breakwaters. Tsunamis are well known with huge wave heights and destructive effects on the coastal region. A 2D numerical model was set using the software, COSMOS to calculate the cross-shore sediment transport and to evaluate profile changes in the coastal seabed. The study area is Kadikoy region, a densely populated industrial coastal area in South East Istanbul. The model was run for different kinds of tsunami waves. Not only the bed profile changes, but also the wave heights, breaker depths, peak wave bottom orbital velocities, wave set-up and cross-shore sediment transport rates were determined. The results indicated that, at a water depth around 40–50 m, some tsunamis were found to have a wave height of order of 15 m, which became about 5 m at a depth of 10 m. The wave set up near the coast was about 1.5–2 m. The results also implied that tsunami waves, with their destructive nature, could lead to dramatic vertical changes of the seabed.

scholarly journals Processes affecting recent and future evolution of the Xylokastro beach zone (Gulf of Corinth, Greece)

2014 ◽  
Vol 16 (4) ◽  
pp. 773-786 ◽  
Keyword(s):  
Sediment Transport ◽  
Sea Level ◽  
Coastal Region ◽  
North Coast ◽  
Future Evolution ◽  
Gulf Of Corinth ◽  
Geological Processes ◽  
Near Shore ◽  
Formation And Evolution ◽  
Relative Change

<div> <p>The aim of the present study is to investigate the morphodynamic regime of the coastal area of Xylokastro (north coast of Peloponnese), in order to identify and evaluate the processes controlling its formation and evolution. Within this concept, a number of factors have been considered and evaluated; near-shore morphometry and granulometry along shore-normal profiles, the direction and potential volumes of long- and cross-shore sediment transport the decadal and future trends of coastline displacement, the available information for terrestrial sediment influx and the geological processes operating in the broader coastal region of Xylokastro (i.e. subaqueous slides) as well as human interference. On the basis of these results, the formation and evolution of this coastal stretch seems to be governed primarily by the neotectonic activity and relative change of sea level rise, and secondarily by the wave-induced near-shore sediment transport; the role of the latter could be enhanced substantially by human intervention (i.e. construction of marina, seafront walls). Moreover, the expected eustatic increase in sea level by the year 2100, could cause a coastline retreat up to 9 m (SLR=0.38 m) or &gt;19 m (SLR&ge;1 m).</p> </div> <p>&nbsp;</p>

scholarly journals NUMERICAL MODELING OF MORPHODYNAMIC CHANGES IN THE JADE ESTUARY – GERMANY

2011 ◽  
Vol 1 (32) ◽  
pp. 84 ◽  
Author(s):  
Almut Gelfort ◽  
Florian Ladage ◽  
Oliver Stoschek
Keyword(s):  
Numerical Modeling ◽  
Sediment Transport ◽  
Numerical Model ◽  
Input Data ◽  
Set Up

Based on a case study sediment transport was modeled numerically for the Jade estuary. Due to the construction of the JadeWeserPort the morphology in the area is undergoing a relocation. The study gives an overview on various studies undertaken as a consultant tool to help designers and decisions makers. A hydrodynamic as well as a morphodynamic numerical model was set up. Although the input data on the morphodynamic part was limited, the results showed that the tool at hand is capable of producing reliable results in the field of modeling sediment transport.

Hydro Thermodynamic Modeling of an Outfall System Discharging Into the Near Shore Area Considering the Environmental Conditions

2008 ◽  
Author(s):  
Said Mazaheri
Keyword(s):  
Water Depth ◽  
Environmental Conditions ◽  
Heat Dissipation ◽  
Cooling Water ◽  
Design Procedure ◽  
Sea Temperature ◽  
Near Shore ◽  
Set Up ◽  
The Persian Gulf

The outlet location of an outfall system usually depends on the location of the water intake chamber, discharge and temperature of the waste and cooling water, sea temperature, near shore hydrodynamics and environmental conditions. Sometime, when it is not possible to discharge the circulated water by an open channel to the shoreline due to environmental restrictions then finding the appropriate water depth where the water can be discharged will become more important. In this situation, the hydrodynamic conditions of worst scenarios should be simulated properly. Then, an advection-dissipation model should be set up in the region in order to find out the heat dissipation pattern of the discharged water for the defined scenarios. Having done the simulations, it is required to interpret the results considering the environmental restrictions. Finally, based on the interpretation of the results, decision about the proper water depth for jetting out the discharged water can be made. In this paper it is attempted to highlight the important issues which should be considered during the design procedure. In addition, as a case study the steps taken for the modeling of the outfall system of Phases 9 & 10 South Pars Refineries located in northern part of the Persian Gulf is explained. Finally, the results of the case study are discussed and consequently further recommendations are given.

Sediment transport under dry weather conditions in a small sewer system

1998 ◽  
Vol 37 (1) ◽  
pp. 155-162
Author(s):  
Flemming Schlütter ◽  
Kjeld Schaarup-Jensen
Keyword(s):  
Sediment Transport ◽  
Field Data ◽  
Field Measurements ◽  
Weather Conditions ◽  
Sewer System ◽  
Transport Models ◽  
Sewer Systems ◽  
Combined Sewer ◽  
Initial Results

Increased knowledge of the processes which govern the transport of solids in sewers is necessary in order to develop more reliable and applicable sediment transport models for sewer systems. Proper validation of these are essential. For that purpose thorough field measurements are imperative. This paper renders initial results obtained in an ongoing case study of a Danish combined sewer system in Frejlev, a small town southwest of Aalborg, Denmark. Field data are presented concerning estimation of the sediment transport during dry weather. Finally, considerations on how to approach numerical modelling is made based on numerical simulations using MOUSE TRAP (DHI 1993).

scholarly journals Intermittent but Rapid Changes to Coastal Landscapes: The Tsunami and El Niño Wave-Formed Sea Arch at Laie Point, Oahu, Hawaii, U.S.A.

Geosciences ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 147
Author(s):  
Benjamin R. Jordan
Keyword(s):  
El Niño ◽  
El Nino ◽  
Sand Dunes ◽  
Tsunami Source ◽  
Tsunami Waves ◽  
Storm Waves ◽  
The Pacific ◽  
Coastal Landscapes ◽  
Wave Heights ◽  
First Time

Kukuiho’olua Island is an islet that lies 164 m due north of Laie Point, a peninsula of cemented, coastal, Pleistocene and Holocene sand dunes. Kukuiho’olua Island consists of the same dune deposits as Laie Point and is cut by a sea arch, which, documented here for first time, may have formed during the 1 April 1946 “April Fools’s Day Tsunami.” The tsunami-source of formation is supported by previous modeling by other authors, which indicated that the geometry of overhanging sea cliffs can greatly strengthen and focus the force of tsunami waves. Additional changes occurred to the island and arch during the 2015–2016 El Niño event, which was one of the strongest on record. During the event, anomalous wave heights and reversed wind directions occurred across the Pacific. On the night of 24–25 February 2016, large storm waves, resulting from the unique El Niño conditions washed out a large boulder that had lain within the arch since its initial formation, significantly increasing the open area beneath the arch. Large waves also rose high enough for seawater to flow over the peninsula at Laie Point, causing significant erosion of its upper surface. These changes at Laie Point and Kukuio’olua Island serve as examples of long-term, intermittent change to a coastline—changes that, although infrequent, can occur quickly and dramatically, potentially making them geologic hazards.

scholarly journals Towards Zero Emissions Noosa

2019 ◽  
Vol 11 (17) ◽  
pp. 4679
Author(s):  
Carina Anderson ◽  
Robert Passey ◽  
Jeremy De Valck ◽  
Rakibuzzaman Shah
Keyword(s):  
Community Engagement ◽  
Focal Point ◽  
Contextual Information ◽  
Renewable Electricity ◽  
Community Group ◽  
Course Of Action ◽  
Engagement Process ◽  
Set Up ◽  
External Consultant

This paper reports on a case study of the community group Zero Emissions Noosa, whose goal is for 100% renewable electricity in the Noosa Shire (Queensland, Australia) by 2026. Described within this paper are the processes used by Zero Emissions Noosa to set up their zero emissions plan, involving community engagement and the use of an external consultant. The external consultant was employed to produce a detailed report outlining how to successfully achieve zero emissions from electricity in the Noosa Shire by 2026. This paper explains how and why the community engagement process used to produce the report was just as important as the outcomes of the report itself. Modeling was undertaken, and both detailed and contextual information was provided. Inclusion of the community in developing the scenario parameters for the modeling had a number of benefits including establishing the context within which their actions would occur and focusing their efforts on options that were technically feasible, financially viable and within their capabilities to implement. This provided a focal point for the community in calling meetings and contacting stakeholders. Rather than prescribing a particular course of action, it also resulted in a toolbox of options, a range of possible solutions that is flexible enough to fit into whatever actions are preferred by the community. The approach and outcomes discussed in this paper should, therefore, be useful to other communities with similar carbon emission reduction goals.

Missiological implications for Taylor Seminary arising from Canada’s Truth and Reconciliation Commission’s recommendations

2017 ◽  
Vol 45 (4) ◽  
pp. 407-413
Author(s):  
Allan Effa
Keyword(s):  
First Nations ◽  
Truth And Reconciliation Commission ◽  
Final Report ◽  
Cooperative Effort ◽  
Truth And Reconciliation ◽  
Cultural Genocide ◽  
The Government ◽  
Government Of Canada ◽  
Set Up

In 2015 the Truth and Reconciliation Commission of Canada concluded a six-year process of listening to the stories of Canada’s First Nations, Inuit and Métis peoples. More than 6000 witnesses came forth to share their personal experiences in listening sessions set up all across the country. These stories primarily revolved around their experience of abuse and cultural genocide through more than 100 years of Residential Schools, which were operated in a cooperative effort between churches and the government of Canada. The Commission’s Final Report includes 94 calls to action with paragraph #60 directed specifically to seminaries. This paper is a case study of how Taylor Seminary, in Edmonton, is seeking to engage with this directive. It explores the changes made in the curriculum, particularly in the teaching of missiology, and highlights some of the ways the seminary community is learning about aboriginal spirituality and the history and legacy of the missionary methods that have created conflict and pain in Canadian society.

Interpersonal Therapy in Primary Infertility, Life-Cycle Transitions, and Dysthymia: A Single Case Study

2021 ◽  
pp. 153465012110382
Author(s):  
Sampurna Chakraborty ◽  
Prasanta K. Roy
Keyword(s):  
Rating Scale ◽  
Single Case ◽  
Interpersonal Psychotherapy ◽  
Single Case Study ◽  
Interpersonal Therapy ◽  
Primary Infertility ◽  
Set Up ◽  
Psychosocial Perspective ◽  
Evidence Based Therapy

Interpersonal psychotherapy (IPT) is an evidence-based therapy, originally developed to treat major depression. IPT conceptualizes depression from a bio-psychosocial perspective where signs of depression are understood in the context of an individual’s current social and interpersonal stressors, defined in terms of role transitions, disputes, bereavements, and sensitivities. In this single case study, IPT was used to treat a woman undergoing primary infertility with multiple failed pregnancies and unsuccessful adoption procedures along with specific grief reactions and depressive symptoms for 2 years. The therapy was formulated over 12 weekly sessions in the outpatient set-up in a general hospital in Kolkata in 2017. Hamilton Depression Rating Scale (HDRS) was used to assess the efficacy of the therapy and its outcomes. The therapy was found to be effective in the patient and justifies the rationale of choosing the said therapy for the specific case from an interpersonal viewpoint. The case study may help suggest how and why to use interpersonal psychotherapy in infertility conditions with psychological ramifications.

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