scholarly journals Possibilities of Controlling the River Outlets by Weirs on the Example of Noteć Bystra River

2020 ◽  
Vol 12 (6) ◽  
pp. 2369
Author(s):  
Joanna Wicher-Dysarz ◽  
Ewelina Szałkiewicz ◽  
Joanna Jaskuła ◽  
Tomasz Dysarz ◽  
Maksymilian Rybacki
Keyword(s):  
Flood Hazard ◽  
A Priori ◽  
Effective Control ◽  
Flood Wave ◽  
Extreme Hazards ◽  
Longitudinal Profiles ◽  
Maximum Flows ◽  
The City ◽  
Flood Waves

The possibility of effective control of selected dams in the Noteć Bystra river is analyzed. Such a control is expected to permit inundation of selected arable areas, e.g., peat grasslands, to avoid flooding of the city of Czarnków and the terrains located downstream. The chosen case study is the reach of the Noteć River between the dams Pianowka–Mikolajewo–Rosko. The analysis was made on the basis of simulations of the flow and regulation of dams in flood conditions. The flow peaks of hypothetical flood waves were designed according to the directions of the ISOK project (Informatyczny System Osłony Kraju przed nadzwyczajnymi zagrożeniami—IT System of the Country’s Protection Against Extreme Hazards) as the maximum flows over 10-years (p = 10%), 100-years (p = 1%), and 500-years (p = 0.2%). The obtained results are presented as longitudinal profiles of the water surface, maps of inundated areas and maps of inundated soils. The main conclusion is that the robust control of dams reduces the peak of flow during flood wave propagation and forces inundation of the a priori selected areas. It helps to decrease the spatial range of the flood hazard and significantly reduces risk related to floods.

scholarly journals Determinants of Flooding and Strategies for Mitigation: Two-Year Case Study of Benin City

Geosciences ◽  
2019 ◽  
Vol 9 (3) ◽  
pp. 136 ◽  
Author(s):  
Giuseppe Cirella ◽  
Felix Iyalomhe ◽  
Paul Adekola
Keyword(s):  
Flood Hazard ◽  
Drainage System ◽  
High Water ◽  
Benin City ◽  
Close Proximity ◽  
Risk Reduction Measures ◽  
And Migration ◽  
Transportation Routes ◽  
The City

Recent flood disasters in Benin City, Nigeria have claimed a number of lives, damaged property, and threatened the overall livelihood of residents. The economic burden of such events has forced a vast reallocation of monetary resources for clean-up and recovery, as well as forcibly altered and suspended internal trade via devastated transportation routes. Secondary trends include inflation and migration concerns. As a result, the aim has been to prioritize mitigation by examining easily read, rapidly accessible flood hazard maps, as well as assess and identify areas within the city prone to flooding. We used a number of data sources and conducted a questionnaire surveying three of the local government areas of Benin City over a two-year period. Findings indicate excessive unsustainable land use and land cover change and a flat and high water table area with close proximity to the Atlantic Ocean make the city susceptible to flood risk. Heavy rainfall and drainage system blockage are leading causes of flooding which have destroyed property and houses—two major side effects. A number of mitigation and disaster risk reduction measures were, hereafter, recommended to reduce flooding occurrence in Benin City or lessen its effects on inhabitants.

scholarly journals A Comparative Analysis of Exceptional Flood Events in the Context of Heavy Rains in the Summer of 2010: Siret Basin (NE Romania) Case Study

2018 ◽  
Author(s):  
Gheorghe Romanescu ◽  
Alin Mihu-Pintilie ◽  
Cristian Constantin Stoleriu ◽  
Donatella Carboni ◽  
Larisa Elena Paveluc ◽  
...  
Keyword(s):  
Comparative Analysis ◽  
Flood Events ◽  
Flood Wave ◽  
The North ◽  
Maximum Discharge ◽  
Hydrometric Station ◽  
Mountainous Basin ◽  
The City ◽  
Heavy Rains

The Siret River crosses NE Romania from the north to the south and it discharges into the Danube, near the city of Galati. During the period, 17th June - 10th July 2010, significant amounts of precipitations in the mountainous basin of Siret were recorded. The floods comprised two periods with four bimodal cycles and they were counted among the strongest on the Romanian territory. The exceptional floods occurred in the rivers of Siret, Suceava, Moldova, Bistrita, Trotus and so on. The most important compound flood wave was determined by the precipitations which fell within the period, 29th June to 1st July 2010, when significant amounts of rain were recorded, sometimes, exceeding 80 mm. The high discharges on the Bistrita River – downstream from the Bicaz Reservoir – were controlled by complex hydro technical works. The maximum discharge for the year 2010 summer floods was recorded at Dragesti hydrometric station: 2,884 m3/s (historic discharge) compared to the preceding historic discharge of the year 2008 (2,850 m3/s). The effects of floods were strongest in the counties of Suceava, Neamt, and Bacau. The floods on the main course of the Siret River were analyzed in correlation with the tributaries within the mountainous sector.

scholarly journals Analysis of physical mechanisms of human body instability for the definition of hazard zones present in emergency action plans of dams. Case study: Santa Helena Dam, Bahia

RBRH ◽  
2019 ◽  
Vol 24 ◽  
Author(s):  
Luan Marcos da Silva Vieira ◽  
Andrea Sousa Fontes ◽  
André Luiz Andrade Simões
Keyword(s):  
Human Body ◽  
Buoyancy Force ◽  
Flood Wave ◽  
Hazard Management ◽  
Physical Mechanisms ◽  
Adaptive Ability ◽  
Definition Of ◽  
The Individual ◽  
Flood Waves

ABSTRACT The impacts caused by flood waves due to dam ruptures usually cause irreversible damages to the resident population, and, the loss of body equilibrium in floods contributes to aggravate this scenario. In this context, this work aimed to analyse the influence of consideration of physical mechanisms that cause instability in the human body on the definition of hazard zones. Therefore, it was developed simulation of the propagation of the flood wave due to the hypothetical rupture of Santa Helena Dam in Bahia, using the hydrodynamic model HEC-RAS. The results of flow velocities and heights were related and compared to different criteria of hazard zonings and mechanisms that cause body instability. It was verified that the consideration of instability mechanisms of the human body can contribute to hazard management, through the knowledge of areas in which different individuals may topple or slide. It was confirmed that in supercritical flow regimes is more likely for the individual to slide and that in subcritical regimes the individual will topple. Moreover, the consideration of parameters such as buoyancy force and the angle related to the human body's adaptive ability in a flooding influence on the definition of zones.

scholarly journals Detecting industry clusters from the bottom up based on co-location patterns mining: A case study in Dongguan, China

2021 ◽  
pp. 239980832199154
Author(s):  
Zihui Liu ◽  
Xinyue Chen ◽  
Weipan Xu ◽  
Yimin Chen ◽  
Xun Li
Keyword(s):  
A Priori ◽  
Information Communication ◽  
Industry Clusters ◽  
Industry Cluster ◽  
Bottom Up ◽  
Technology Industry ◽  
Location Patterns ◽  
Sporting Goods ◽  
The City

Industry cluster development is important to stimulate regional economy. Conventional spatial methods for detecting industry clusters use a pairwise manner to infer the co-location relationships of multiple industrial types or instances, which increases the difficulty of interpreting the results. This study proposes to use co-location patterns (CPs) mining method to directly capture the co-location of multiple industrial types from the bottom up without any conditions of data relations defined a priori. The method is applied in Dongguan, China, to investigate the industry cluster patterns at an intra-urban scale. At the city level, the results show prevalent CPs of information communication and technology industry and other associated sectors. At the sub-regional level, however, approximately 41% of the industrial CPs are different from those obtained at the city level. The local features of sub-regional industry clusters are associated with productions of, for instance, sporting goods and toys, digital instrument and office equipment, machine parts and woodware, and textile-related products.

scholarly journals Modelling flood hazard at Paratrechos/Peritsi stream, Naxos Island (Cyclades, Greece)

2018 ◽  
Vol 20 (1) ◽  
pp. 123-129
Author(s):  
Niki EVELPIDOU ◽  
Niki POLYKRETI ◽  
Anna KARKANI ◽  
Eirini KARDARA ◽  
Stamatina SEFERLI ◽  
...  
Keyword(s):  
Drainage Basin ◽  
Flood Hazard ◽  
Field Measurements ◽  
Infiltration Rate ◽  
Flash Floods ◽  
Annual Rainfall ◽  
The Relationship ◽  
The City ◽  
Geological Formations

Flash floods are one of the most significant natural hazards in the Mediterranean, affecting most basins in the region. Flash floods usually occur in ephemeral streams after particularly heavy rainfall. Although the average annual rainfall in the Cycladic islands (Greece) does not exceed 400 mm, flash floods are frequent, since most of that rainfall is often concentrated in few but very intense events. The case study is the drainage basin of Paratrechos or Peritsi stream in Naxos Island. This particular basin was selected due to the recorded flood events, the stream's proximity to the city that intensifies the flood impact, the slopes' gradient abrupt changes and the diverse infiltration rate of the geological formations. Furthermore, some parts of the basin are intact by human activities, while others are severely affected. This study investigates the relationship between rain and runoff through Unitary Hydrographs, in order to estimate and evaluate the flood potential of the aforementioned hydrologic basin and to determine the causes of the hazard and vulnerability. The Clark method was implemented and its results were further evaluated by field measurements.

scholarly journals Hydrodynamic Analysis of a Stormwater System, under Data Scarcity, for Decision-Making Process: The Duran Case Study (Ecuador)

2020 ◽  
Vol 12 (24) ◽  
pp. 10541
Author(s):  
David Matamoros ◽  
Mijail Arias-Hidalgo ◽  
Maria del Pilar Cornejo-Rodriguez ◽  
Mercy J. Borbor-Cordova
Keyword(s):  
Model Calibration ◽  
Meteorological Factors ◽  
Flood Hazard ◽  
Warning System ◽  
Precipitation Event ◽  
Risk Awareness ◽  
Hydrodynamic Analysis ◽  
Coastal Cities ◽  
The City

Urban flooding is a major problem in many coastal cities around the world, mainly caused by factors such as poor urban planning, outdated sewer capacity or high frequent extreme events. In developing countries such as Ecuador, lack of monitoring, financial constraints and absence of proper policies exacerbate flooding problems. The use of the Stormwater Management Model (SWMM) helped to identify zones that are flooded even with a 2-year precipitation event at Duran city. Since there are no flood monitoring stations across the study area, model calibration was performed against unofficial records (people complaints, media photographs, and water marks on walls). Model results fairly agreed with those unofficial record. However, a validation process is not achievable yet due to lack of enough flood data even in flood prone areas. To further increase city resilience, authorities and stakeholders should engage in climate actions to raise flood hazard-risk awareness, monitoring hydro-meteorological factors, complement drainage operations with nature-based solutions, and improve hydrodynamic modelling to develop a flood early warning system for the city.

Study of Interior Materials as Passive Fire Protection in Karaoke Building (Case Study: Masterpiece Signature Family KTV Medan)

2020 ◽  
Vol 4 (1) ◽  
pp. 30-43
Author(s):  
Saras Ayu Faradita ◽  
Vinky Rahman
Keyword(s):  
Fire Protection ◽  
Analytical Hierarchy Process ◽  
Passive Protection ◽  
Fire Incident ◽  
Fire Disaster ◽  
Passive Fire Protection ◽  
Protection Systems ◽  
Hierarchy Process ◽  
The City

The fire incident in karaoke buildings in Indonesia which claimed many lives has occurred several times. According to the National Academy of Science US, the smoke toxins that come out of the fire disaster cause 50-80% of deaths. Refers to the data, it is necessary to check further about the building material response to fire during a fire incident. Masterpiece Signature Karaoke is a karaoke building that classified as large and magnificent in the city of Medan which has various material so that it is necessary to study the interior material as passive fire protection. The purpose is to find out how to assess the reliability of fire passive protection regard to the interior materials and recommendations or descriptions of right interior material planning using the Analytical Hierarchy Process (AHP). This method is efficacious to solve the problem of reliability in using interior materials as passive fire protection in Masterpiece Signature Family KTV Medan building with the results of an Adequate Level of reliability. Then, design recommendations were given for the use of interior materials in karaoke building to improve the reliability results to be better.The results are useful as information for other researchers and karaoke buildings regarding passive fire protection systems at the Masterpiece Signature Family KTV Medan.

Emplacing Berlin: Digital Itineraries and Short-term Study Abroad in the City

2018 ◽  
Vol 12 (1) ◽  
pp. 26-36 ◽  
Author(s):  
Richard B. Apgar
Keyword(s):  
Study Abroad ◽  
Urban Landscape ◽  
Physical Space ◽  
Short Term ◽  
Study Abroad Programs ◽  
Term Study ◽  
Digital Maps ◽  
Short Term Study ◽  
The City

As destination of choice for many short-term study abroad programs, Berlin offers students of German language, culture and history a number of sites richly layered with significance. The complexities of these sites and the competing narratives that surround them are difficult for students to grasp in a condensed period of time. Using approaches from the spatial humanities, this article offers a case study for enhancing student learning through the creation of digital maps and itineraries in a campus-based course for subsequent use during a three-week program in Berlin. In particular, the concept of deep mapping is discussed as a means of augmenting understanding of the city and its history from a narrative across time to a narrative across the physical space of the city. As itineraries, these course-based projects were replicated on site. In moving from the digital environment to the urban landscape, this article concludes by noting meanings uncovered and narratives formed as we moved through the physical space of the city.

Analysis of geodetic and legal documentation in the process of expropriation for roads. Krakow case study

2013 ◽  
Vol 62 (1) ◽  
pp. 67-84
Author(s):  
Anna Trembecka
Keyword(s):  
Local Government ◽  
Legal Status ◽  
The State ◽  
Property Value ◽  
Real Property ◽  
Construction Design ◽  
Special Rules ◽  
The City

Abstract Amendment to the Act on special rules of preparation and implementation of investment in public roads resulted in an accelerated mode of acquisition of land for the development of roads. The decision to authorize the execution of road investment issued on its basis has several effects, i.e. determines the location of a road, approves surveying division, approves construction design and also results in acquisition of a real property by virtue of law by the State Treasury or local government unit, among others. The conducted study revealed that over 3 years, in this mode, the city of Krakow has acquired 31 hectares of land intended for the implementation of road investments. Compensation is determined in separate proceedings based on an appraisal study estimating property value, often at a distant time after the loss of land by the owner. One reason for the lengthy compensation proceedings is challenging the proposed amount of compensation, unregulated legal status of the property as well as imprecise legislation. It is important to properly develop geodetic and legal documentation which accompanies the application for issuance of the decision and is also used in compensation proceedings.

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