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Operational shoreline mapping with high spatial resolution radar and geographic processing

March 15, 2017

A comprehensive mapping technology was developed utilizing standard image processing and available GIS procedures to automate shoreline identification and mapping from 2 m synthetic aperture radar (SAR) HH amplitude data. The development used four NASA Uninhabited Aerial Vehicle SAR (UAVSAR) data collections between summer 2009 and 2012 and a fall 2012 collection of wetlands dominantly fronted by vegetated shorelines along the Mississippi River Delta that are beset by severe storms, toxic releases, and relative sea-level rise. In comparison to shorelines interpreted from 0.3 m and 1 m orthophotography, the automated GIS 10 m alongshore sampling found SAR shoreline mapping accuracy to be ±2 m, well within the lower range of reported shoreline mapping accuracies. The high comparability was obtained even though water levels differed between the SAR and photography image pairs and included all shorelines regardless of complexity. The SAR mapping technology is highly repeatable and extendable to other SAR instruments with similar operational functionality.

Citation Information

Publication Year 2017
Title Operational shoreline mapping with high spatial resolution radar and geographic processing
DOI 10.14358/PERS.83.3.237
Authors Amina Rangoonwala, Cathleen E Jones, Zhaohui Chi, Elijah W. Ramsey
Publication Type Article
Publication Subtype Journal Article
Series Title Photogrammetric Engineering and Remote Sensing
Series Number
Index ID 70185136
Record Source USGS Publications Warehouse
USGS Organization Wetland and Aquatic Research Center