scholarly journals Updating flood maps efficiently using existing hydraulic models, very-high-accuracy elevation data, and a geographic information system; a pilot study on the Nisqually River, Washington

2001 ◽  
2021 ◽  
Vol 234 ◽  
pp. 00066
Author(s):  
Ahmed Ait Errouhi ◽  
Jihane Gharib ◽  
Yassir Bouroumine ◽  
Anas Bahi

Depending on the technical, institutional, economic and social limits of developing countries, as well as the population density in cities, nowadays, the volume of urban waste has increased considerably, and the management of this waste contributes to climate change, and air pollution, it directly affects many ecosystems and many species. Waste management faces serious problems such as irregular collection, informal sweeping activities, uncontrolled dumping and proliferation of illegal dumping. The latter constitute a real and permanent threat to the quality of life, this exponential increase in the urban population and the resulting accelerated phenomenon of urbanization have highlighted the need to develop sustainable and efficient waste management systems. Stakeholders are therefore required to consider alternative and available means of disposal, in particular by minimizing the damage caused to the ecosystem and to the human population, among these means of disposal, controlled landfills, considered as the last option in the waste hierarchy. In this study, attempts were made to locate a new landfill in Oum Azza using the AHP multi-criteria decision-making method to assess the different criteria considered during the prospecting and combining them with the geographic information system to acquire the results in the form of maps displayed on the optimal sites to house a new controlled landfill and minimize its terrible impact on the environment.


2019 ◽  
Vol 10 (2) ◽  
pp. 178-188
Author(s):  
Hutrianto ◽  
Firamon Syakti

Sesuai dengan undang-undang berkaitan dengan kesehatan yaitu undang-undang nomor 36 tahun 2009 menyatakan dengan jelas yaitu anggaran untuk kesehatan merupakan 5% dari anggaran pendapatan dan belanja negara (APBN). Untuk itu perhatian dan kepedulian pemerintah menjadi sangan penting untuk dilakukan baik pemerintah tingkat nasional, provinsi, kabupaten, kecamatan atau bahkan pemeritnah tingkat kelurahan. Salah satu sektor yang patut diperhatikan yaitu sektor pencegahan berkaitan dengan penyakit malaria. Namun untuk melakukan pencegahan tersebut membutuhkan data yang valid serta aktual. Untuk itu di dalam penelitian ini dilakukan pengembangan sistem informasi geografis penderita malaria sebagai salah satu cara dalam penyajian informasi untuk penanggulangan oleh pemerintah. Dalam proses pengembangan sistem informasi geografis digunakan waterfall seabgai metode pengembangan dengan tahapan communication, planning, modeling, construction, dan deployment. Sistem informasi geografis yang dihasilkan memiliki fitur yang dapat menyajikan data pendertia malaria dengan atribut nama, jenis Malaria, RT, alamat, telepon dan lama menderita malaria dan telah dilakukan pengujian. Hasil pengujian menunjukkan semua komponen dapat berfungsi dengan baik.   Kata kunci: SIG, Penderita Malaria, Waterfall     Abstract  By the law relating to health, namely law number 36 of 2009 states clearly that the budget for health constitutes 5% of the state budget (APBN). For this reason, the attention and concern of the government become very important to be carried out either at the national, provincial, district, sub-district, or even village level government. One sector that needs attention is the prevention sector related to malaria. But to do this, prevention requires valid and actual data. For this reason, in this research, the development of a geographic information system for malaria sufferers was carried out as a way of presenting information for countermeasures by the government. In the process of developing a geographic information system, a waterfall used as a method of development with stages of communication, planning, modelling, construction, and deployment. The resulting geographic information system has a feature that can present supplementary malaria data with the attribute name, type of malaria, RT, address, telephone, and duration of disease and has tested. The test results show all components can function correctly.  Keywords: GIS, Malaria sufferers, Waterfall


2018 ◽  
Vol 2 (1) ◽  
pp. 45
Author(s):  
Fahmi Arif Kurnianto ◽  
Bejo Apriyanto ◽  
Elan Artono Nurdin ◽  
Fahrudi Ahwan Ikhsan ◽  
Rosmadi Bin Fauzi

Jember regency has several areas that are morphology of folding hills and mountain folds. The part of landslide prone zone is closely related to the slope of the slope. Areas with a sloping slope of more than 15º need attention to the possibility of a landslide disaster. Interconnection contacts with weathering of rocks, settlements and land cover also affect the landslide potential. The existence of Ijen Volcano that produces volcanic rock deposits that are generally not yet unified will increase the potential for landslides in Jember Regency. Landslide has occurred one of them on Gunung Gumitir Street which is the main route of Surabaya-Jember-Banyuwangi traffic. In May 2016 this street is hit by landslide, so the flow of traffic through this lane is paralyzed and must be diverted to a further path, which rotates to Situbondo City. The transfer of this pathway resulted in a loss to the local community and who crossed the path.The occurrence of landslide disaster shows that Jember Regency area is vulnerable and potentially return to landslide. Therefore there is a need for a solution to solve this problem. One solution to solve the problem is by utilizing Geographic Information System (GIS) application. The purpose of this research is to analyze zonation prone to landslide in jember district. The design of the research is Geographic Information System overlay analysis. This design combines several parameters in the determination of landslide-prone zones. This design combines several parameters in the determination of landslide-prone zones. The parameter used in this research is (1) land use, (2) topography, and (3) soil.Based on the research results, it can be known zone with highest to lowest vulnerability level. Zone with very high level of vulnerability is located in Panti sub-district, Sumberbaru, Sukorambi, Dyke, Silo and Jelbuk. The zones have similar characteristics that include (1) soil type of andosol, (2) clay texture, (3) uncompacted rock, (4) slope of 30⁰-40⁰ (steep and very steep), and (5) land use for settlements and plantations. Keyword: landslide disaster, jember regency, Geographic Information System


2021 ◽  
Vol 31 (3) ◽  
pp. 1-17
Author(s):  
Fayçal Khelfaoui ◽  
Lamine Sayad ◽  
Badra Attoui ◽  
Boualem Bouselsal ◽  
Salah Ghezaili

Abstract The Oued Souf free aquifer located in the South East of Algeria represents the main water resource used mostly for urban and agricultural activities. The intensive use of chemical fertilizers has led to serious environmental problems such as contamination of the free aquifer in the region. Thus, aquifer vulnerability has been assessed using several different methods (DRASTIC, GOD, and the Susceptibility Index ‘SI’) based on a geographic information system (GIS). For each method, two vulnerability maps have been developed in the years 2002 and 2012. These maps show that the study area is more exposed to urban, and especially agricultural, pollution. Two classes of vulnerability (moderate and high) have been identified by both DRASTIC and GOD methods. A combined analysis reveals that the moderate class showing 48% (for the GOD method), and the high class showing 57% (for the DRASTIC method) are the most dominant. However, the Susceptibility Index method (SI) revealed that the vulnerability varies from moderate to very high-level classes. In 2012, about of 53% of the study area was dominated by moderate vulnerability classes. The high vulnerability class also includes a considerable part of the land (41%) around urban or strongly agricultural areas, while only 6% is under very high vulnerability groundwater contamination. In addition, a marked decrease in the vulnerability level was noticed in 2012 compared to 2002. This decrease is mainly due to the lowering of the water table after the installation of a vertical drainage network to evacuate the surplus water to the depression and Chotts areas in the North of the region. These results provide a guide for decision-makers involved in the protection of groundwater pollution in such a vulnerable area.


This study aimed at a prediction of tsunami hazard levels in South Bengkulu Regency, that is calculated based data on sea-level rise, distance from the coastline, distance from the nearest rivers, and beach slope. Measurement is carried out using Geographic Information System (GIS) analysis with overlay techniques and the methods of scoring/weighting. The results showed in South Bengkulu Regency the tsunami hazard levels of very high class 504.65 Km (44.8%), high class 160.77 Km (13.7%), somewhat high class 131.09 Km (11.2%), low class 64.92 Km (5.6 %) and very low class 250.39 Km (21.2%).


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