NDLI: Remotely sensed determination of flood surface gradients for hydrological modelling of semi-arid floodplains

Content Provider	IEEE Xplore Digital Library
Author	Benger, S.N.
Copyright Year	2003
Description	Author affiliation: Appl. Ecology Res. Group, Univ. of Canberra, ACT, Australia (Benger, S.N.)
Abstract	The wetland and riparian communities associated with most inland Australian rivers rely on periodic flooding and drying cycles for their healthy maintenance and ecological functioning. Community composition, structure and location are determined primarily by elevation and hence access to flood waters. As most inland rivers are heavily regulated, determination of the timing and size of environmental flow releases from water storages is essential for the proper management of these areas. Modelling of flood surface gradients across large floodplains is one means used to determine which areas of the floodplain and consequently which vegetation communities will be flooded for a given environmental flow release. Traditionally, these gradients have been determined by cell-based analysis using aerial photography and contour maps. Various Landsat TM derived water detection algorithms and L-band SAR backscatter thresholding techniques were explored to detect floodwater boundaries during flooding of a large wetland area on the Macquarie River in central western New South Wales, Australia. These were used in conjunction with a Digital Elevation Model of the area in a GIS environment to model the flood surface gradient and determine the relationships between elevation, flooding and distance from flood entry point. Results showed that automated determination of the flood surface gradient from the satellite imagery achieved better results than manual cell-based analysis and facilitated more accurate modelling of the effects of flow releases. The development of such techniques will permit better use of water resources for sustainable management of important wetland and riparian communities in the future.
Starting Page	2950
Ending Page	2952
File Size	1347730
Page Count	3
File Format	PDF
ISBN	0780379292
DOI	10.1109/IGARSS.2003.1294642
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2003-07-21
Publisher Place	France
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Floods Rivers Biological system modeling Australia Satellites Timing Water storage Environmental management Vegetation mapping Photography
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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