Special UNISPACE III volume

Marsteller, Deborah

Bibliographic data

Monograph

Persistent identifier:: 856485039

Author:: Marsteller, Deborah

Title:: Special UNISPACE III volume

Sub title:: including: ISPRS Workshop on "Resource Mapping from Space", ISPRS-EARSeL Workshop on "Remote Sensing for the Detection, Monitoring and Mitigation of Natural Disasters", ISPRS-NASA Seminar on "Environment and Remote Sensing for Sustainable Development", July 1999, Vienna, Austria

Scope:: IV, 170 Seiten

Year of publication:: 1999

Place of publication:: Coventry

Publisher of the original:: RICS Books

Identifier (digital):: 856485039

Illustration:: Illustrationen, Diagramme, Karten

Language:: English

Usage licence:: Attribution 4.0 International (CC BY 4.0)

Publisher of the digital copy:: Technische Informationsbibliothek Hannover

Place of publication of the digital copy:: Hannover

Year of publication of the original:: 2016

Document type:: Monograph

Collection:: Earth sciences

Chapter

Title:: ISPRS/EARSeL Workshop on "Remote Sensing for the Detection, Monitoring and Mitigation of Natural Disasters"

Document type:: Monograph

Structure type:: Chapter

Chapter

Title:: APPLICATION OF«4D» TECHNIQUES IN FLOOD MONITORING IN CHINA 1998. Liangcai Chu, Ziwei Li, Yutong Liu

Document type:: Monograph

Structure type:: Chapter

International Archives of Photogrammetry and Remote Sensing. Vol. XXXII Part 7C2, UNISPACE III, Vienna, 1999 126 I5PR5 UNISPACE III - ISPRS/EARSeL Workshop on “Remote Sensing for the Detection, Monitoring and Mitigation of Natural Disasters” 2:30-5:30 pm, 22 July 1999, VIC Room B Vienna, Austria APPLICATION OF«4D» TECHNIQUES IN FLOOD MONITORING IN CHINA 1998 Liangcai Chu, Ziwei Li, Yutong Liu Chinese Academy of Surveying and Mapping Beijing, 100039, P.R. China KEYWORDS: Natural disasters, remote sensing, flood monitoring. DEM. 4-D techniques INTRODUCTION 4D is produced by combining modem remote sensing and GIS technology and fonns the basic mode of digitized products for surveying and mapping. It includes a Digital Elevation Model (DEMDE), Digital OrthoQuards Qu (DOQDO), Digital Raster Grapliics (DRGDR) and Digital Thematic Information (DT1DT). A 4D flood-protection technical institution was established including; a remote sensing helicopter, a 4D-background database of potential disaster areas and a data management system, a flood prediction and risk assessment service system, topographic maps in a background database and a dynamic monitoring system of land-use. This institution was active during the floods in 1998 resulting in detailed flood monitoring and assessment that were provided to the decision-making department and provincial government. The following tasks were performed: 1. Prediction of potential flood areas and water volume at various water levels. 2. Acquisition of infrared color images of important cities of Dongting-lake and Poyang-lake areas at the highest water level. 3. Statistics of flood range and flood area in the same areas at the highest water level. 4. Compilation of an atlas of risk zones in the areas during the 1998 super flood. 5. Video tape monitoring of the flood. 6. Reconstruction homestead including an updated topographic map for YangZi river and NenJiang river. METHODOLOGY Remote sensing monitoring by helicopter at low-altitude This system includes a Mig-8 helicopter with GPS navigation positional system, light aerial optical measurement camera, CCD digital camera and digital VCR. The system was used over the Dongting and Poyang lakes from I s * Aug, 1998 to 10 th , i.e. during the most dangerous period, flying under the clouds between raining days. Data was obtained as listed below: • Black and white aerial photo of the two lakes at 1: 8000 scale. • Color infrared aerial photo important cities at 1:8000 scale. • GPS data record for flight tracks • VCR tapes from aerial camera • 300 color pictures of low lakes 4D background database of potential disaster environment and data management system. The content of the database is listed below: Digital Orthquard database-, created by using 1:35000 new aerial photos and SPOT panchromatic image Digital Raster Graphics database: created using 1: 10000, 1: 50000 new topographic maps. High accuracy Digital Elevation Model database: digitized from new 1:10000 contour line for topographic maps. The resolution is 5 meters and the accuracy in plane regions is 0.5 metre; in mountainous areas tire accuracy' is 2.5 metres to 5 metres. Digital Thematic Information database includes: • Land-use classification data • Boundary data, road and embankment data in vector version • Important point data including location for government, density' habitat, large factories • And mines • Hydrological Station information • Population and economy information • Flood protection engineering information The database is in 1:50000 scale and most data is in a raster format also compatible with vector data, statistical data and report text data. The software was developed for an ARC/INFO platform with functions including registering, queiving, displaying and overprinting. All data can be managed in normalizing way with spatial positioning. POTENTIAL APPLICATIONS Flood forecasting and loss assessment service system This system offers several methods of selection to different scales to compile map sheets of counties, enclosing-dikes and the whole region. Supported by 4D background data, the system quickly constructs maps of flood submerging range, place, area, water depth water accumulation volume and economic losses. It

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