2020 ◽  
Vol 12 (16) ◽  
pp. 6316
Author(s):  
Takeyasu Suzuki

Extreme weather caused by global warming has caused an increase in the number and intensity of heavy rain disasters. Almost half the area of the Kofu Basin, Yamanashi Prefecture, Japan, is expected to be flooded by the largest expected rainfall in the basin. Approximately 310,000 people live in the inundation area, and the formulation of a wide-area evacuation plan in the event of a flood is an urgent issue. In the southern part of this area, where the estimated inundation depth is 5–10 m, a new station of the Linear Chuo Shinkansen Line, which will start operation in 2027, is planned, and urban development centered on the station is expected. In order to build a sustainable city that is resilient to floods in such a flood hazard area, the author established a study group on urban development consisting of knowledge brokers—professors at University of Yamanashi—and experts with the participation of local government observers. The group has proposed a future image of sustainable Kofu Basin under the initiative of knowledge brokers with the cooperation of experts. The group attempted to put into practice the concept of sustainable cities presented by the author. As a result, by the unusual town development activities of the study group, perspective drawings that provide the participants a common recognition of the city development were successfully created.


2015 ◽  
Vol 17 (3) ◽  
pp. 130 ◽  
Author(s):  
Achmad Yamani ◽  
Ernan Rustiadi ◽  
Widiatmaka Widiatmaka

Pidie is one of the districts in Aceh Province that has been suffering from flooding. Frequent disasters, especially flooding associated with various causative factors, need mitigation efforts. An appropriate land use planning by considering the risk aspects especially in flood is an important step. Objectives of this study are to determine the factors influencing the flood hazard, to map the areal distribution vulnerable to flood, to analyze the relations of land use in the flood hazard area, and to analyze the relations between the planned spatial pattern and the flood hazard area. ,Multicriteria analysis was used to determine the factors influencing the flood hazard. Spatial analysis was used in mapping the class of flood hazard, the relations of land use in the flood hazard area, and the relations between the planned spatial pattern and the flood hazard area. The results show that the main factors influencing flood vulnerability are land use/cover (0.408), rainfall (0.266), and slope (0.184). Based on the classification of flood vulnerability, the area can be divided into more vulnerable (37.75 %), less vulnerable (30 %), and mildly vulnerable (22.76 %). The vulnerability classes of the land use/cover are: less vulnerable (99.99 %) and more vulnerable (97.57 %) dominated by forest cover; mildly vulnerable (51.07%) and vulnerable (92.65%) dominated by mixed farming; and very vulnerable (97%) dominated by settlement. The flood vulnerability of the planned spatial pattern can be classified as follows: 95.44 % of the conservation area is dominated by less vulnerable and more vulnerable, while 71.20 % of the cultivation area can be categorized into mildly vulnerable, vulnerable and very vulnerable.


Author(s):  
Iswandi Umar

The flood disaster has caused much harm to human life. Efforts to reduce the losses incurred by the policy directed the development of disaster-based residential areas based. The purpose of determining the direction of the policy of settlement development in the area of flood hazard in Limapuluh Kota District. To determine policy direction using AHP approach by involving 25 experts from related institutions. To determine the sustainability of development using the MDS approach. The result of policy analysis of the development of settlement area in the flood hazard area shows that there are three alternatives, namely a) disaster education; b) increased socialization in the flood hazard zone, and c) disaster-based space planning. In addition, the analysis of the sustainability of the development of residential areas shows that the institutional and legal dimensions are still low. Therefore, it is necessary to have the firmness and consistency of the government in spatial planning.


2016 ◽  
Vol 03 (02) ◽  
pp. 1671007
Author(s):  
Mark N. Mauriello

New Jersey’s coastal zone has a long history of storm and flood hazard vulnerability, as documented by copious technical reports, historical maps and surveys, storm damage assessments and flood insurance claims. In the context of geologic time, this vulnerability can be attributed, in part, to increasing sea level rise resulting from melting of Pleistocene glaciers. In the context of human time, extensive development, redevelopment and urbanization of the New Jersey coast has contributed significantly to this vulnerability. At the same time, financial constraints at the state and federal level and increasing taxpayer liability for damage recovery costs will create challenges in long-term adaptation. A number of New Jersey academics have identified the magnitude of natural hazard vulnerabilities and the importance of mitigation to promote public safety, with James K. Mitchell of Rutgers University being one of the notable contributors to that effort. Current mitigation measures may be partially effective in protecting people and property in the short term. However, barriers to effective hazard area management and adaptation planning, including physical, financial, social, demographic and political constraints, need to be addressed. Understanding the scope and impact of these barriers is critical to developing the necessary long-term adaptation plans that will promote a safe and sustainable future for New Jersey.


2016 ◽  
Vol 18 (2) ◽  
pp. 73
Author(s):  
Tommi Tommi ◽  
Baba Barus ◽  
Arya Hadi Dharmawan

<p class="JudulABSInd">ABSTRAK</p><p class="abstrak">Banjir merupakan salah satu fenomena perubahan iklim yang sering terjadi di Kabupaten Karawang. Banjir membawa dampak kerugian yang sangat besar terhadap masyarakat kabupaten yang sebagian besar bekerja di sektor pertanian.<em> </em>Penelitian ini bertujuan untuk menganalisis tingkat bahaya banjir dan tingkat kerentanan petani di daerah bahaya banjir tinggi di Kabupaten Karawang. Untuk mencapai kedua tujuan tersebut, maka analisis dalam penelitian ini dilakukan dua tahap. Tahapan pertama, dilakukan analisis tingkat bahaya banjir. Analisis tingkat bahaya banjir dilakukan untuk mendapatkan kelas tingkat bahaya banjir lahan sawah di Kabupaten Karawang. Metode yang digunakan dalam analisis tingkat bahaya banjir adalah tumpang susun (<em>overlay</em>) peta sawah, peta kejadian banjir, peta drainase tanah, peta curah hujan dan peta administrasi Kabupaten Karawang. Tahapan kedua, dilakukan analisis kerentanan petani di daerah bahaya banjir tinggi. Metode yang digunakan untuk analisis kerentanan petani adalah dengan menghitung indeks kerentanan nafkah atau <em>Livelihood Vulnerability Index</em> (LVI). Data yang digunakan untuk menghitung indeks LVI adalah data responden petani di daerah bahaya banjir tinggi. Hasil dari penelitian ini menunjukkan daerah di Kabupaten Karawang yang memiliki kelas tingkat bahaya banjir tinggi terdapat di Kecamatan Telukjambe Barat, Telukjambe Timur dan Jayakerta. Tingkat kerentanan nafkah petani di daerah bahaya banjir tinggi pada Kecamatan Telukjambe Barat menunjukkan petani di Dusun Pengasinan dan Dusun Kampek, Desa Karangligar, tingkat kerentanannya lebih tinggi dibandingkan dengan petani di Dusun Peundeuy, Desa Ciptamarga, Kecamatan Jayakerta.</p><p class="KataKunciInd"><strong>Kata kunci</strong>: banjir, tingkat bahaya, kerentanan</p><p align="center"><em><strong>ABSTRACT</strong><strong></strong></em></p><p class="Abstrakeng"><em>Flood is one of the climate change phenomenon that often occurs in Karawang District. Flood impact very big loss to the district community, mostly working in agriculture. This research aim to analyze the level of flood hazards and the vulnerability of farmers in high flood hazard area at Karawang District. The analysis consists of two steps. First step, the analysis of flood hazard level. The analysis aim to obtain flood hazard level class paddy field at Karawang District. The methods are overlay paddy fields maps, event flood maps, soil drainage maps, rainfall maps and administrative maps of Karawang District. The second step, analysis of farmer vulnerability in high flood hazard area. The analysis aim to determine the level of farmers vulnerability in high flood hazard area. The method is Livelihood Vulnerability Index (LVI). The data is respondent farmers in high flood hazard area. Results of this study indicate areas in Karawang District which has a high flood hazard level such as West Telukjambe, East Telukjambe and Jayakerta Sub District. The level of livelihood vulnerability in high flood hazard area shows farmers in Dusun Pengasinan and Dusun Kampek, Karangligar Village, West Telukjambe Sub District is higher than farmers in Dusun Peundeuy,Ciptamarga Village, Jayakerta Sub District.</em></p><p><em><strong>Keywords</strong>: flood, hazard, vulnerability<br /></em></p>


Author(s):  
Virginia Grace Barros ◽  
John Rapaglia ◽  
Maiko B. Richter ◽  
Jean F. Andrighi

2021 ◽  
Vol 325 ◽  
pp. 01024
Author(s):  
Indah Salsabiela ◽  
Kuswantoro Marko ◽  
Mangapul P. Tambunan ◽  
Faris Zulkarnain

Extreme rainfall in East Jakarta on February 19, 2021 caused flooding in a number of subdistricts. The research was conducted in the central part of Kali Sunter, which flows through three subdistricts, namely Cipinang Melayu, Cipinang Muara, and Pondok Bambu. The purpose of the study was to do flood hazard modeling and analyze the characteristics of flood-affected areas based on land use and topography. Inundation and flood hazard maps is done by: calculating the flood discharge using the SCS-CN method, flood inundation modelling using HEC-RAS, and analyzing the characteristics of the inundated area. This combination is effective for rapid modeling during extreme rainfall events. Based on the research, the distribution of the highest flood hazard area is in RW 004 Cipinang Melayu, with the widest inundation affecting small and medium-sized houses. The characteristics of the affected area are that there is green and empty land which reduces the potential for water to inundate buildings or other land uses. Buildings located in low-hazard housing areas tend to be more organized and relatively medium to large in size. While the types of housing in the Cipinang Melayu with a high level of danger tend to be dense and small to medium in size, but the majority have two floors as a form of flood adaptation.


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