A Determination of the Acceptable Design Extreme Rainfall for the Improvement of Flood Disaster Prevention Ability

2012 ◽  
Vol 12 (3) ◽  
pp. 307-311 ◽  
Author(s):  
Deok Jun Jo ◽  
Na Eun Lee ◽  
Byeong Hoon Jeon ◽  
Doo Kee Kang
Keyword(s):  
Extreme Rainfall ◽  
Flood Disaster ◽  
Disaster Prevention

The Study of LSM-SA Dynamic Thrust Testing Device in the Gate of River and Main Canal

2012 ◽  
Vol 610-613 ◽  
pp. 2488-2492
Author(s):  
Pei Feng Liu ◽  
Tao Lv ◽  
Qing Hua Bu
Keyword(s):  
Linear Motor ◽  
Testing Device ◽  
Disaster Prevention ◽  
Direct Drive ◽  
Important Indicator ◽  
Advantages And Disadvantages ◽  
Urgent Task ◽  
Effective Operation ◽  
Main Canal

The application of the linear motor is a hot topic in current researching. The dynamic thrust testing is not also an important indicator in the study of linear motor, but also one of the difficulties in the study of linear motor characteristics. The LSM-SA dynamic thrust testing device was researched in the gate of river and main canal. According to compare with the traditional dynamic thrust test, its principle, advantages and disadvantages was illustrated. Some improvements were further made. Meanwhile, the variation of the improved cogging force was analyzed, the curve of the cogging force was made and the LSM-SA testing equipment was designed. Finally, the accuracy of the equipment was verified. It can directly conduct a test of the dynamic thrust. Nowadays, flood protection and disaster prevention has become an urgent task to solve, it is directly related to the country’s economy and people’s lives. The dynamic thrust to control the gate of the river and the main canal was used to prevent disaster. Therefore, the determination of the dynamic thrust becomes particularly important. In order to achieve the system to operate efficiently and accurately, the size of the dynamic thrust must be accurately determined. The device could achieve high accuracy direct drive to ensure the safe and effective operation of the gate of the river and the main canal, develop the water conservancy.

scholarly journals KRITERIA RUANG TERBAIK KOMPLEK PERMUKIMAN BERDASARKAN PEMETAAN RISIKO BENCANA BANJIR DI KABUPATEN HULU SUNGAI TENGAH KALIMANTAN SELATAN

2018 ◽  
Vol 4 (1) ◽  
Author(s):  
Rosalina Kumalawati ◽  
Farida Angriani ◽  
Dienny Redha Rahmani
Keyword(s):  
Flood Risk ◽  
Flood Plain ◽  
Disaster Risk ◽  
Flood Disaster ◽  
Risk Mapping ◽  
Main River ◽  
Risk Approach ◽  
Natural Disaster Risk ◽  
Flood Risk Mapping

Banjir mulai muncul sejak manusia bermukim dan melakukan berbagai kegiatan di kawasan yang berupa dataran banjir (flood plain) suatu sungai termasuk di Kalimantan Selatan, Indonesia. Kabupaten Hulu Sungai Tengah beberapa kali terkena bencana banjir di daerah yang padat penduduk. Penelitian ini bertujuan untuk mengetahui kriteria  ruang terbaik komplek permukiman berdasarkan pemetaan risiko bencana banjir di Kabupaten Hulu Sungai Tengah Kalimantan Selatan. Metode penelitian ini adalah mix method. Teknik analisis yang akan digunakan untuk penentuan kriteria ruang terbaik komplek permukiman berbasis risiko bencana banjir dalam bentuk peta (2D) dan maket (3D) dengan pendekatan tingkat risiko sungai utama dan kepadatan permukiman. Wilayah yang direncanakan untuk pembangunan ruang yang baru, harus memasukkan faktor risiko bencana alam. Hasil dari penelitian ini adalah kriteria ruang terbaik komplek permukiman berdasarkan pemetaan risiko bencana banjir di Kabupaten Hulu Sungai Tengah Kalimantan Selatan  dalam bentuk maket. Sebagian besar kecamatan di Kabupaten Hulu Sungai Tengah tidak mempunyai risiko terhadap bencana banjir. Daerah yang tidak mempunyai risiko bencana banjir dapat dijadikan untuk pembangunan tempat pengungsian dan alokasi pengembangan permukiman yang baru.Kata kunci: Banjir, komplek permukiman, risiko. Floods began to emerge since humans being lives and did various activities in the area of flood plain (flood plain) of a river including in South Kalimantan, Indonesia. Hulu Sungai Tengah District has been affected by floods in densely populated areas. The purpose of this research is to know the best space criteria for complex of settlement based on flood risk mapping in Hulu Sungai Tengah, South Kalimantan. The method of this research is mix method. Analyze technique that used for the determination of the best space criteria of residential complex based on disaster risk in flood map form (2D) and maket (3D) with the main river level risk approach and settlement density. The planned area for new spatial development should include natural disaster risk factors. The results of this study are the best criteria for residential complex based on disaster risk mapping floods in Hulu Sungai Tengah Selatan Selatan Regency in the form of mockups. Most of the sub-districts in Hulu Sungai Tengah have no risk of flood disaster. The areas that do not have the risk of flood disaster can be used for the construction of evacuation sites and the new settlement.Keywords: Flood, risk, settlement complex.

scholarly journals The FLOOD DISASTER MANAGEMENT BASED ON EXTREME TROPICAL RAINFALL IN DECADES OF CLIMATE CHANGE IN INDONESIA

2021 ◽  
Vol 5 (2) ◽  
pp. 124-130
Author(s):  
Rahmat Gernowo ◽  
Muhamad Irham Nurwidyanto
Keyword(s):  
Distribution Pattern ◽  
Disaster Management ◽  
Rainfall Intensity ◽  
Wrf Model ◽  
Extreme Rainfall ◽  
Heavy Rain ◽  
Atmospheric Dynamics ◽  
Flood Disaster ◽  
South Sulawesi ◽  
The Tropics

Indonesia's climate classification is divided into three rainfall patterns. The three patterns are Seasonal Pattern, Equatorial Pattern, and Local Pattern (Anti Seasonal). Flood Disaster Management based on extreme rainfall is very much needed, as the analysis was taken as a case study on January 22, 2019, a flood disaster occurred in South Sulawesi. The flood event indicated that there was heavy rain that flushed the South Sulawesi region for several days, which is classified as monsoonal rainfall. This study aims to analyze the characteristics of heavy rain with atmospheric anomalies during these events by calculating rainfall intensity to determine future flooding patterns and using the WRF model to analyze cloud distribution patterns and rainfall distribution. The method used in this research is Mononobe and Weather Research and Forecasting (WRF) using the Fabric Fritsch cumulus parameterization scheme. The analysis showed that the intensity and duration of rainfall of 2, 5 10, 25, and 50 years were obtained from the Mononobe model, as well as from the atmospheric dynamics data, there was rain for 3 consecutive days caused by cumulonimbus type rain clouds. Based on the WRF model, it can be seen that the CAPE value before the onset of rain is quite significant, thus supporting the growth of rain clouds as an important variable in flood disaster management in the South Sulawesi region in particular and the tropical zone in. general. Motivation/Background: Indonesia is included in a tropical climate where extreme rainfall is important to analyze. The majority of flood disasters in the tropics occur in decades of extreme atmosphere, this is an important reason in this study. Method: The Mononobe method can be used to calculate the distribution pattern of rainfall intensity throughout 2, 5, 10, 25, and 50 years, as a prediction of future rainfall intensity patterns. The WRF model is used to calculate the cloud distribution pattern and the spatial distribution of rainfall. Results: The results of this study obtained patterns of rainfall intensity and duration of 2, 5, 10, 25, and 50 years from the Mononobe model, as well as from the atmospheric dynamics data, there was rain for 3 consecutive days caused by cumulonimbus rain clouds. The pattern of cloud distribution and rainfall at the time of the incident at the WRF model research location. Conclusions: Analysis of the distribution pattern of rainfall intensity for the periods of 2, 5, 10, 25, and 50 years, as well as the distribution pattern of clouds and rainfall, is very necessary for disaster identification, especially hydrometeorology. This is very important as a variable in flood disaster management, especially in the tropics

scholarly journals DETERMINAÇÃO DA EQUAÇÃO INTENSIDADE-DURAÇÃO-FREQUÊNCIA PARA ALGUMAS LOCALIDADES DO ESTADO DA BAHIA

Irriga ◽  
2019 ◽  
Vol 1 (1) ◽  
pp. 109-115
Author(s):  
LORENA JÚLIO GONÇALVES ◽  
CRISTIANO TAGLIAFERRE ◽  
MANOEL NELSON DE CASTRO FILHO ◽  
RODRIGO LACERDA BRITO NETO ◽  
BISMARC LOPES DA SILVA ◽  
...  
Keyword(s):  
Gumbel Distribution ◽  
Extreme Rainfall ◽  
Annual Rainfall ◽  
Rainfall Events ◽  
Rain Gage ◽  
Kolmogorov Smirnov ◽  
Intensity Duration Frequency ◽  
Caixa Postal ◽  
Linear Regressions

DETERMINAÇÃO DA EQUAÇÃO INTENSIDADE-DURAÇÃO-FREQUÊNCIA PARA ALGUMAS LOCALIDADES DO ESTADO DA BAHIA     LORENA JÚLIO GONÇALVES1; CRISTIANO TAGLIAFERRE2; MANOEL NELSON DE CASTRO FILHO3; RODRIGO LACERDA BRITO NETO4; BISMARC LOPES DA SILVA5 E FELIZARDO ADENILSON ROCHA6   1 Departamento de Engenharia Agrícola e Solos da Universidade Estadual do Sudoeste da Bahia (UESB); Estrada do Bem Querer, Km 04; Caixa Postal 95; CEP 45031-900, Vitória da Conquista – BA, [email protected]; 2 Departamento de Engenharia Agrícola e Solos da Universidade Estadual do Sudoeste da Bahia (UESB); Estrada do Bem Querer, Km 04; Caixa Postal 95; CEP 45031-900, Vitória da Conquista – BA, [email protected]; 3 Departamento de Agronomia da Universidade Federal de Viçosa (UFV); Avenida Peter Henry Rolfs, s/n, Campus Universitário; CEP 36570-900; Viçosa – MG; [email protected]; 4 Mestre em Ciências Florestais pela Universidade Estadual do Sudoeste da Bahia (UESB); Rua Madureira, n° 160, Bairro Primavera; CEP 45700-000, Itapetinga – B; [email protected]; 5 Departamento de Engenharia Agrícola e Solos da Universidade Estadual do Sudoeste da Bahia (UESB); Estrada do Bem Querer, Km 04; Caixa Postal 95; CEP 45031-900, Vitória da Conquista – BA, [email protected]; 6 Instituto Federal da Bahia/ Campus Avançado de Vitória da Conquista; Avenida Sérgio Vieira de Mello, n° 3150, Bairro Zabelê; CEP 45075-265, Vitória da Conquista – BA, [email protected].     1 ABSTRACT   The objective of this study was to fit intensity-duration-frequency equations (IDF) for sites in Bahia state, Brazil. Maximum annual rainfall lasting 5, 10, 15, 20, 30, 60, 360 and 1440 minutes were fitted to Gumbel distribution. Equation parameters were estimated using Gauss Newton method for non-linear regressions. According to Kolmogorov-Smirnov test, all equations were fitted to Gumbel distribution. From fitted distributions, maximum annual rainfall intensity was calculated for 2, 10, 20, 50 and 100years return periods, which were used to define the equation for intense rainfall events. Fitting parameters of the equations varied across rain gage stations, especially for the parameter K, suggesting the need for determining these equations for each site, thereby providing information when designing agricultural and hydraulic projects.   Keywords: Hydrology. Extreme Rainfall. Distribution of Gumbel.     GONÇALVES, L. J.; TAGLIAFERRE, C.; CASTRO FILHO, M. N; BRITO NETO, R. L.; SILVA, B. L; ROCHA, F. A. DETERMINATION OF INTENSITY-DURATION-FREQUENCY EQUATIONS FOR SITES IN BAHIA STATE     2 RESUMO   O objetivo deste estudo foi determinar equações de intensidade-duração-frequência (IDF), com base em chuvas extremas para algumas localidades do Estado da Bahia. As precipitações máximas anuais com duração de 5, 10, 15, 20, 30, 60, 360 e 1440 minutos foram ajustadas à distribuição de Gumbel. Os parâmetros da equação foram estimados pelo método de regressão não linear de Gauss Newton. De acordo com o teste Kolmogorov-Smirnov houve ajuste de todas as equações à distribuição de Gumbel. Através das distribuições ajustadas, calcularam-se os valores de intensidade máxima anual de precipitação para períodos de retorno de 2, 10, 20, 50 e 100 anos, que serviram de base para definir a equação de chuvas intensas. Os valores dos parâmetros ajustados das equações variaram entre as estações, notadamente o parâmetro K, evidenciando a necessidade da determinação dessas equações para cada localidade para dimensionamento de projetos agrícolas e de obras hidráulicas.   Palavras-chave: Hidrologia. Chuvas Intensas. Distribuição de Gumbel.

Reversibility Between “Nature” and “Society” Recognized in Extreme Meteorological Phenomenon: Taking an Example of the Flood Disaster in the Toga River in Kobe City

2013 ◽  
Vol 8 (1) ◽  
pp. 103-113 ◽  
Author(s):  
Katsuya Yamori ◽  
◽  
Motoyuki Ushiyama ◽  
Keyword(s):  
Flood Disaster ◽  
Disaster Prevention ◽  
Prevention Measures ◽  
Recreational Facilities ◽  
Space And Time ◽  
Sudden Rise ◽  
River Flood ◽  
Nature And Society ◽  
Kobe City ◽  
Meteorological Phenomenon

This paper considers the reversibility between “nature” and “society” recognized in extrememeteorological phenomena, taking an example of the Toga River flood disaster in Kobe City in July 2008. The point is stressed that, in extreme meteorological phenomena, “nature,” representing dangerous space and time, and “society,” representing safe space and time, are easily reversed. For example, in recent years, the number of cases has increased in which citizens experience a sudden rise in a river at recreational facilities with water such as in the case of the Toga River flood disaster. Later, they confessed that they had encountered flood disasters at an unexpected time and place. This suggests that disaster prevention measures to separate “nature,” a rise in a river and flooding, and “society,” the livelihood of citizens in a town, could ironically promote the occurrence of a flood disaster. Previous disaster prevention measures that have attempted to separate “nature” and “society,” spatially by building levees, etc., and also, temporarily by disseminating disaster information, etc., should be reviewed. It is now recommended that new measures be worked out tomake citizens recognize the reversibility of these two elements – “nature” and “society” – and the difficulty of separating these completely. Concretely, this paper discusses the importance of sharing similar flood disaster cases among citizens and the necessity of risk communication of conflicting and dilemmatic situations.

scholarly journals A Review on Rainfall Data Resolution and Its Role in the Hydrological Practice

Water ◽  
2021 ◽  
Vol 13 (8) ◽  
pp. 1012
Author(s):  
Renato Morbidelli ◽  
Carla Saltalippi ◽  
Jacopo Dari ◽  
Alessia Flammini
Keyword(s):  
Review Paper ◽  
Temporal Evolution ◽  
Extreme Rainfall ◽  
Rain Gauge ◽  
Rainfall Data ◽  
Second Step ◽  
Data Resolution ◽  
Historical Series ◽  
Correct Determination

Data collected by gauges represent a fundamental force in most hydrological studies. On the basis of sensor type and recording system, such records are characterized by different aggregation time, ta. In this review paper, a comprehensive rainfall database of rain gauge networks operative worldwide is used to determine the temporal evolution of ta. As a second step, issues related to the limited and heterogeneous temporal resolution of rainfall data are discussed with regard to avoiding possible errors in the analysis of historical series. Particular attention is focused on quantifying the effects on the estimation of extreme rainfalls that play a crucial role in designing hydraulic structures. To this aim, algebraic relations for improving a correct determination of extreme rainfall are also provided.

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