{"id":3312,"date":"2024-02-26T12:17:07","date_gmt":"2024-02-26T09:17:07","guid":{"rendered":"https:\/\/nor-ijournal.com\/?p=3312"},"modified":"2024-03-01T20:37:18","modified_gmt":"2024-03-01T17:37:18","slug":"127-17","status":"publish","type":"post","link":"https:\/\/nor-ijournal.com\/ru\/2024\/02\/26\/127-17\/","title":{"rendered":"Nguyen Thanh Hung, Tran Thi Tham &#8211; SENTINEL-2 APPLICATION IN THE URBAN SURFACE WATER DRAINAGE ANALYSIS IN BIEN HOA CITY, VIETNAM"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"3312\" class=\"elementor elementor-3312\" data-elementor-settings=\"{&quot;ha_cmc_init_switcher&quot;:&quot;no&quot;}\">\n\t\t\t\t<div class=\"has_eae_slider elementor-element elementor-element-174423c e-flex e-con-boxed jltma-glass-effect-no wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-parent\" data-eae-slider=\"43479\" data-id=\"174423c\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"has_eae_slider elementor-element elementor-element-e289846 e-con-full e-flex jltma-glass-effect-no wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-child\" data-eae-slider=\"44185\" data-id=\"e289846\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b5a0a35 jltma-glass-effect-no exad-sticky-section-no exad-glass-effect-no elementor-widget elementor-widget-heading\" data-id=\"b5a0a35\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">SENTINEL-2 APPLICATION IN THE URBAN SURFACE WATER DRAINAGE ANALYSIS IN BIEN HOA CITY, VIETNAM<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-863f119 jltma-glass-effect-no exad-sticky-section-no exad-glass-effect-no elementor-widget elementor-widget-text-editor\" data-id=\"863f119\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p style=\"text-align: right;\"><strong>Nguyen Thanh Hung<br \/><\/strong><em>Hochiminh City University for Natural Resources and Environment. HoChiMinh, Vietnam<br \/><\/em><strong>Tran Thi Tham<br \/><\/strong><em>Vietnam National Forestry University. Hanoi, Vietnam<\/em><\/p><p><strong>Abstract<\/strong><\/p><p>The study shows the effective application of sentinel-2 images in analyzing the current state of urban surface water drainage in Bien Hoa city. The extraction of each component of water, vegetation and impervious surface based on NDVI, MNDWI and NDBI indexes has contributed very effectively in the formation of the composite cover map. Overall classification accuracy T = 0.92, Kappa coefficient = 0.87. Asymptotic analysis with the QGIS tool was used to determine the minimum distance from any point in the urban area to the natural permeable surface. The isolation of urban cover surface helps to determine the ratio of impervious surface and natural permeable surface within Bien Hoa city wards. The results of asymptotic analysis have shown that the central wards of Bien Hoa have 3-5 times higher access distance to the natural permeable surface than the suburban wards, corresponding to the ratio of impervious surface area\/natural permeable surface between them. The coefficient of variation according to the statistical results of asymptotic distance is an important basis for evaluating the degree of interlacing of areas with impervious surfaces with areas with natural permeable surfaces. Research results have located the spatial distribution and characteristics of areas with high potential for flooding in Bien Hoa city, those are the downtown areas with an impervious surface ratio &gt;60% and the access distance to the naturally permeable surface &gt;120m. This result will be very useful in sustainable urban drainage planning.<\/p><p><strong>\u00a0<\/strong><strong>Keywords:<\/strong> Sustainable urban drainage; Sentinel-2; GIS; Urban planning; Drainage system.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-206ce67 jltma-glass-effect-no exad-sticky-section-no exad-glass-effect-no elementor-widget elementor-widget-pdfjs_viewer\" data-id=\"206ce67\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"pdfjs_viewer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<iframe data-src=\"https:\/\/nor-ijournal.com\/wp-content\/plugins\/pdf-viewer-for-elementor\/assets\/pdfjs\/web\/viewer.html?file=https:\/\/nor-ijournal.com\/wp-content\/uploads\/2024\/03\/NJD_127-78-89.pdf&amp;embedded=true\" style=\"display: block; margin-left: auto; margin-right: auto; width: 770px; height: 1045px;\" frameborder=\"1\" marginheight=\"0px\" marginwidth=\"0px\" 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e-flex e-con-boxed jltma-glass-effect-no wpr-particle-no wpr-jarallax-no wpr-parallax-no wpr-sticky-section-no wpr-column-slider-no wpr-equal-height-no e-con e-parent\" data-eae-slider=\"65798\" data-id=\"5b319b8\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>SENTINEL-2 APPLICATION IN THE URBAN SURFACE WATER DRAINAGE ANALYSIS IN BIEN HOA CITY, VIETNAM Nguyen Thanh HungHochiminh City University for Natural Resources and Environment. HoChiMinh, VietnamTran Thi ThamVietnam National Forestry University. Hanoi, Vietnam Abstract The study shows the effective application of sentinel-2 images in analyzing the current state of urban surface water drainage in Bien Hoa city. The extraction of each component of water, vegetation and impervious surface based on NDVI, MNDWI and NDBI indexes has contributed very effectively in the formation of the composite cover map. Overall classification accuracy T = 0.92, Kappa coefficient = 0.87. Asymptotic analysis with the QGIS tool was used to determine the minimum distance from any point in the urban area to the natural permeable surface. The isolation of urban cover surface helps to determine the ratio of impervious surface and natural permeable surface within Bien Hoa city wards. The results of asymptotic analysis have shown that the central wards of Bien Hoa have 3-5 times higher access distance to the natural permeable surface than the suburban wards, corresponding to the ratio of impervious surface area\/natural permeable surface between them. The coefficient of variation according to the statistical results of asymptotic distance is an important basis for evaluating the degree of interlacing of areas with impervious surfaces with areas with natural permeable surfaces. Research results have located the spatial distribution and characteristics of areas with high potential for flooding in Bien Hoa city, those are the downtown areas with an impervious surface ratio &gt;60% and the access distance to the naturally permeable surface &gt;120m. This result will be very useful in sustainable urban drainage planning. \u00a0Keywords: Sustainable urban drainage; Sentinel-2; GIS; Urban planning; Drainage system. 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