Maps etc.

The areas of interest below group the map produced or facilitated by UNOSAT for the humanitarian community. Please credit UNOSAT and/or the original source if this information is used in a report, project etc.
Additional products including satellite images and thematic maps can be provided by UNOSAT on request.

10 Viet Nam maps
TC-2009-000205-VNM
Flood Waters in Quang Nam Province, Viet Nam
	International Charter Space and Major Disasters Product ID: 1385 - 7 Oct, 2009 - English GLIDE: TC-2009-000205-VNM Product FOOTPRINT (LAT x LONG, WSG84 Geographic, decimal degrees) TopLeft: 15.897 x 107.82 BottomRight: 15.65 x 108.159 This map illustrates satellite-detected flood waters in the province of Quang Nam, Viet Nam, based on crisis Radarsat-2 data acquired on 3 October 2009 & pre-crisis Radarsat-1 data acquired on 5 July 2001.The newly-released ASTER global elevation model (GDEM) was also used in this analysis. This flood assessment is a preliminary analysis & has not yet been validated in the field. Please send ground feedback to UNITAR / UNOSAT. Source(s): Satellite Data : Radarsat-2 / 1 Imagery Dates : 3 October 2009 / 5 July 2001 Resolution : 25m Copyright : RADARSAT-2 © MDA 2009 Credit : Canadian Space Agency Elevation Data : ASTER GDEM Resolution : 27 m Source : METI & NASA 2009 Road Data :Google Map Maker Other Data : CISIN, ESRI, USGS, NGA Flood Analysis : UNITAR / UNOSAT Map Production : UNITAR / UNOSAT Projection : UTM Zone 48 North Datum : WGS-84 (EGM-96) UNOSAT_VNM_QuangNam_RS2_3Oct09_HR_v1.pdf (4.3MB), UNOSAT_VNM_QuangNam_RS2_3Oct09_LR_v1.pdf (1.3MB)

Flood Affected Areas in Quang Tri Province, Viet Nam
	Product ID: 1383 - 6 Oct, 2009 - English GLIDE: TC-2009-000205-VNM Product FOOTPRINT (LAT x LONG, WSG84 Geographic, decimal degrees) TopLeft: 16.56 x 106.52 BottomRight: 16.36 x 107.16 This map illustrates satellite-detected areas likely affected by flooding in the province of Quang Tri, Viet Nam, as based on change detection methods using Alos Palsar acquired over the area on 30 September 2009. This flood assessment is a preliminary analysis and has not yet been validated in the field. Source(s): Satellite Data (1): ALOS PALSAR Imagery Dates : 30 September 2009 Archive : 15 October 2008 Resolution : 12.5 m Copyright: JAXA Elevation Data : ASTER GDEM Resolution : 27 m Source : METI & NASA 2009 Road Data : Google Map Maker Other Data : CISIN, ESRI, USGS, NGA Flood Analysis : UNITAR / UNOSAT Map Production : UNITAR / UNOSAT Projection : UTM Zone 48 North Datum : WGS-84 (EGM-96) KETZANAFloods_sept09_2_LR.pdf (1.0MB), KETZANAFloods_sept09_2_HR.pdf (2.5MB)

FL-2009-000124-VNM
Flood Affected Areas in Hoa Binh Province, Viet Nam
	International Charter Space and Major Disasters Product ID: 1369 - 29 Jul, 2009 - English GLIDE: FL-2009-000124-VNM Product FOOTPRINT (LAT x LONG, WSG84 Geographic, decimal degrees) TopLeft: 20.81795 x 105.0479 BottomRight: 20.392864 x 105.66866 This map illustrates satellite-detected areas likely affected by heavy rainfall and flash flooding in the province of Hoa Binh, Viet Nam, as based on change detection methods using ENVISAT IMP (HH) radar data acquired over the area on 13 July 2009 & 29 May 2004. The newly released ASTER global elevation model (GDEM) was also used in the flooding analysis. This flood assessment is a preliminary analysis & has not yet been validated in the field. Map scale for A3: 1:210,000; Projection : UTM Zone 48 North; Datum : WGS-84 (EGM-96). Source(s): Satellite Data (1) : ENVISAT IMP (HH) Imagery Dates : 13 July 2009 & 29 May 2004 Resolution : 25 m Copyright : ESA Elevation Data : ASTER GDEM Resolution : 27m Source : METI & NASA 2009 GIS Data : CISIN Other Data : OSM, ESRI, USGS, NGA Flood Analysis : UNITAR / UNOSAT Map Production : UNITAR / UNOSAT UNOSAT_VNM_FlashFloods_HoaBinh_ENVISATJuly09_LR.pdf (1.3MB), UNOSAT_VNM_FlashFloods_HoaBinh_ENVISATJuly09_HR.pdf (3.2MB)

Flash-Flood Affected Areas in Nguyen Phuc, Bach Thong, Bac Kan Province, Viet Nam
	Product ID: 1368 - 21 Jul, 2009 - English GLIDE: FL-2009-000124-VNM Product FOOTPRINT (LAT x LONG, WSG84 Geographic, decimal degrees) TopLeft: 22.287179 x 105.901882 BottomRight: 22.231666 x 105.983466 This map illustrates satellite-detected areas likely affected by flash flooding in the province of Bac Kan, Viet Nam, as based on change detection methods using Radarsat 2 & 1 data acquired over the area on 11 July 2009 & 19 March 2001. The newly-released ASTER global elevation model (GDEM) was also used in the flooding analysis. Pre-crisis Spot-5 imagery from 11 November 2008 was used for road and main building identification using automated identification methods. This flood assessment is a preliminary analysis & has not yet been validated in the field. Map scale for A3: 1:26,000; Projection : UTM Zone 48 North; Datum : WGS-84 (EGM-96). Source(s): Satellite Data (1) : RADARSAT- 1 & 2 Imagery Dates : 11 July 2009 & 19 March 2001 Resolution : 25 m Copyright : RADARSAT-2 © MDA 2009 Credit :Canadian Space Agency Satellite Data (2) : SPOT-5 (2.5m Panshapened) Imagery Date : 11 November 2008 Copyright : SPOT Image 2009 Elevation Data : ASTER GDEM Resolution : 27m Source : METI & NASA 2009 GIS Data : CISIN Other Data : OSM, ESRI, USGS, NGA Roads & Buildings : UNITAR / UNOSAT Flood Analysis : UNITAR / UNOSAT Map Production : UNITAR / UNOSAT UNOSAT_FlashFloods_NguyenPhuc_radarsat11July09_LR.pdf (1.2MB), UNOSAT_FlashFloods_NguyenPhuc_radarsat11July09_HR.pdf (5.0MB)

FF-2008-000211-VNM
Overview of Flood Waters in Ha Noi Province, Vietnam
	International Charter Space and Major Disasters Product ID: 1295 - 17 Nov, 2008 - English GLIDE: FF-2008-000211-VNM Product FOOTPRINT (LAT x LONG, WSG84 Geographic, decimal degrees) TopLeft: 21.8333 x 105.75 BottomRight: 20.9166 x 106 This map illustrates satellite-detected water over the flood-affected provinces of Hanoi, Red River Delta Region, Vietnam. Probable flood waters were detected with DMC multispectral data acquired on 9 November 2008 at a spatial resolution of 32m. Pre-flood DMC multispectral data from 24 November 2005 was also used in this analysis. This flood assessment is a preliminary analysis & has not yet been validated in the field. The depiction and use of boundaries, geographic names and related data shown here are not warranted to be error-free nor do they imply official endorsement or acceptance by the United Nations. This map was produced by the United Nations Institute for Training and Research (UNITAR) Operational Satellite Applications Program (UNOSAT). UNOSAT provides satellite imagery & related geographic information to UN humanitarian & development agencies & their implementing partners. Source(s): Satellite Data: DMC L1R Imagery Date: 24 November 2005 & 9 November 2008 Resolution: 32m Image Copyright: DMC International Imaging Ltd (2008) GIS Data: CISIN Other Data: GIST, OCHA, ESRI, USGS, NGA Flood Analysis: UNOSAT (2008) Map Production: UNOSAT (2008) Projection: UTM Zone 48 North Datum: WGS 1984 UNOSAT_VNM_Hanoi_DMC_17Nov08_Lowres.pdf (656.7Kb), UNOSAT_VNM_Hanoi_DMC_17Nov08_Highres.pdf (2.2MB)

Flood Waters in Hà Tây-Hanoi Province, Vietnam
	International Charter Space and Major Disasters Product ID: 1289 - 13 Nov, 2008 - English GLIDE: FF-2008-000211-VNM Product FOOTPRINT (LAT x LONG, WSG84 Geographic, decimal degrees) TopLeft: 21.03 x 105.48 BottomRight: 20.41 x 106.05 This map illustrates satellite-detected water over the flood-affected provinces of Hà Tây & Hanoi, Red River Delta Region, Vietnam. Probable flood waters were detected with Palsar radar data acquired on 7 November 2008 at a spatial resolution of 25m. Pre-flood Palsar radar data from 22 September 2008 was also used in this analysis. This flood assessment is a preliminary analysis & has not yet been validated in the field. Source(s): Satellite Data : ENVISAT-ASAR WSM Imagery Date : 7 November & 22 September 2008 Resolution : 12.5m Image Copyright : JAXA-METI (2008) GIS Data : CISIN Other Data : GIST, OCHA, ESRI, USGS, NGA Flood Analysis : UNOSAT (2008) Map Production : UNOSAT (2008) Projection : UTM Zone 48 North Datum : WGS 1984 UNOSAT_VNM_HaTay_Palsar_Floods_7Nov08_Lowres.pdf (1.2MB), UNOSAT_VNM_HaTay_Palsar_Floods_7Nov08_Highres.pdf (5.8MB)

Overview of Flood Waters in the Red River Delta Region, Vietnam
	International Charter Space and Major Disasters Product ID: 1288 - 12 Nov, 2008 - English GLIDE: FF-2008-000211-VNM Product FOOTPRINT (LAT x LONG, WSG84 Geographic, decimal degrees) TopLeft: 21.393 x 105.185 BottomRight: 19.992 x 107.21 This map illustrates satellite-detected water over the flood-affected provinces in the Red River Delta Region, Vietnam. Probable flood waters were detected with ENVISAT-ASAR radar data acquired on 10 November 2008 at a spatial resolution of 150m (WSM). Pre-flood ASAR radar data from 3 October 2008 was also used in this analysis. A summary table of flood water area (km2) by province is included in the map. This flood assessment is a preliminary analysis & has not yet been validated in the field. Map scale for A3: 1:650,000, Projection : UTM Zone 48 North, Datum : WGS 1984. Source(s): Satellite Data : ENVISAT-ASAR WSM Imagery Date : 10 November & 3 October 2008 Resolution : 150m Image Source: ESA (2008) GIS Data : CISIN Other Data : GIST, OCHA, ESRI, USGS, NGA Flood Analysis : UNOSAT (2008) Map Production : UNOSAT (2008) UNOSAT_VNM_RedRiverDelta_ASAR_10Nov08_Lowres.pdf (1.9MB), UNOSAT_VNM_RedRiverDelta_ASAR_10Nov08_Highres.pdf (5.1MB)

Estimated Rainfall Accumulation in Vietnam
	International Charter Space and Major Disasters Product ID: 1287 - 7 Nov, 2008 - English GLIDE: FF-2008-000211-VNM Product FOOTPRINT (LAT x LONG, WSG84 Geographic, decimal degrees) TopLeft: 22 x 104 BottomRight: 12 x 110 This map illustrates estimated total rainfall accumulation for Vietnam. This total estimate was derived from the Tropical Rainfall Monitoring Mission (TRMM) precipitation dataset at a spatial resolution of approximately 25km for this region, and covers the dates from 25 October to 04 November 2008. It is possible that precipitation levels may have been underestimated for local areas, and is not a substitute for ground station measurements. This rainfall estimate is a preliminary result & has not yet been validated in the field. The depiction and use of boundaries, geographic names and related data shown here are not warranted to be error-free nor do they imply official endorsement or acceptance by the United Nations. This map was produced by the United Nations Institute for Training and Research (UNITAR) Operational Satellite Applications Programme (UNOSAT). UNOSAT provides satellite imagery and related geographic information to UN humanitarian and development agencies and their implementing partners. Source(s): Flood Analysis: UNOSAT Rainfall Data: TRMM (NASA) Resolution: 0.25 deg Date Series: 25 Oct. - 04 Nov. 2008 Other GIS Data: GIST, USGS, ESRI, GEBCO Map Production: UNOSAT (6 Nov. 2008) Projection: UTM, Zone 48 North Datum: WGS 1984 UNOSAT_VNM_Rainfall_4Nov08_lowres.pdf (1.3MB), UNOSAT_VNM_Rainfall_4Nov08_highres.pdf (2.1MB)

TC-2007-000178-VNM
Flood Water Identification in Province of Thua Thien Hue, Vietnam
	Product ID: 1001 - 18 Oct, 2007 - English GLIDE: TC-2007-000178-VNM Product FOOTPRINT (LAT x LONG, WSG84 Geographic, decimal degrees) TopLeft: 16.7 x 106.9 BottomRight: 16.2 x 108.15 This map illustrates satellite detected flood water over the flood affected areas in Hue province, Vietnam (depicted in red). Flood water analysis was made using MODIS Terra & Aqua data recorded from 12-14 October 2007, however thick cloud cover has prevented a complete analysis. Additional pre-flood MODIS data from September 2007 (depicted in blue) was used in this analysis. This flood detection is a preliminary analysis & has not yet been validated in the field. Map Scale: 1: 440,000 for A3 Projection: UTM Zone 49 North Datum: WGS-84 Source(s): Satellite Data : MODIS Terra & Aqua Image Dates: Sept. & Oct. 2007 Sensor Resolution : 250-500 m Image Processing: NASA Flood Analysis: UNOSAT GIS Data : NGA, USGS, SALB, GIST Map Production: UNOSAT (18/10/07) UNOSAT_Flood_Map_Hue_Vietnam_14Oct07_Lowres_v1.0.jpg (952.2Kb), UNOSAT_Flood_Map_Hue_Vietnam_14Oct07_Highres_v1.0.jpeg (1.6MB)

Flood Water Identification in Provinces of Thanh Hoa, Nghe An & Ninh Binh, Vietnam
	Product ID: 1000 - 12 Oct, 2007 - English GLIDE: TC-2007-000178-VNM Product FOOTPRINT (LAT x LONG, WSG84 Geographic, decimal degrees) TopLeft: 20.5 x 104.3 BottomRight: 18.5 x 106.3 This map illustrates satellite detected flood water over the flood affected areas in northern Vietnam (depicted in red). Flood water analysis was made using MODIS Terra & Aqua data recorded from 7-9 October 2007, however thick cloud cover has prevented a complete analysis. Additional pre-flood MODIS data from September 2007 (depicted in blue) was used in this analysis. This flood detection is a preliminary analysis & has not yet been validated in the field. Map Scale: 1: 550,000 for A3 Projection: UTM Zone 48 North Datum: WGS-84 Source(s): Satellite Data : MODIS Terra & Aqua Image Dates: Sept. & Oct. 2007 Sensor Resolution : 250-500 m Image Processing: NASA Flood Analysis: UNOSAT GIS Data : NGA, USGS, SALB, GIST Map Production: UNOSAT (12/10/07) UNOSAT_Flood_Map_ThanHoa_Vietnam_9Oct07_Lowres_v1.0.jpg (869.8Kb), UNOSAT_Flood_Map_ThanHoa_Vietnam_9Oct07_Highres_v1.0.jpeg (2.2MB)