Bathymetry of near-shore zones in rongelap atoll, Marshall Islands using satellite imagery

Rasaiah, Barbara, Peterson, Eric, Beger, Maria and Jones, Simon D. (2011). Bathymetry of near-shore zones in rongelap atoll, Marshall Islands using satellite imagery. In: 34th International Symposium on Remote Sensing of Environment - The GEOSS Era: Towards Operational Environmental Monitoring. 34th International Symposium on Remote Sensing of Environment, Sydney, Australia, (). 10-15 April 2011.

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Author Rasaiah, Barbara
Peterson, Eric
Beger, Maria
Jones, Simon D.
Title of paper Bathymetry of near-shore zones in rongelap atoll, Marshall Islands using satellite imagery
Conference name 34th International Symposium on Remote Sensing of Environment
Conference location Sydney, Australia
Conference dates 10-15 April 2011
Proceedings title 34th International Symposium on Remote Sensing of Environment - The GEOSS Era: Towards Operational Environmental Monitoring
Place of Publication Sydney, Australia
Publisher International Symposium for Remote Sensing of the Environment
Publication Year 2011
Year available 2011
Sub-type Fully published paper
Open Access Status
ISBN 9780932913142
Total pages 4
Collection year 2012
Language eng
Formatted Abstract/Summary
Large-scale mapping of remote coral reefs requires a sensor that offers imagery with the spatial, spectral, and
radiometric resolution suitable for processing large datasets of shoreline and near-shore regions. This study tests the viability of ASTER imagery in deriving accurate bathymetry of nearshore zones in Rongelap, an atoll in the Marshall Islands. A depth estimation algorithm was developed by calculating the ratio between two bands of reflectance data from the ASTER
image and estimates depth of the near-shore zones based on the ratio. A dataset of geopositioned in situ measurements using RTK-GPS was obtained with sonar and sounding lines to a depth of 30m. The depth estimates were then compared to the in situ depth readings as a basis for determining accuracy and sensitivity of the ASTER-based ratio algorithm. The results from the ASTER-based ratio algorithm indicate the importance of using blue band reflectance data in satellite-based
bathymetric modelling.
Subjects 1705 Computer Networks and Communications
2305 Environmental Engineering
Keyword ASTER
Bathymetry
Coastal and marine resources
Satellite imagery
Zone mapping
Q-Index Code E1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Conference Paper
Collection: School of Biological Sciences Publications
 
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