Two ASTER satellite image mosaics covering a 10.4 x 7.1 km area centered near 30 degrees north, 90.1 degrees west. The images show flooded and dried areas of New Orleans, with one mosaic from April/September 2000 and a post-event image from September 13, 2005. The data was provided by NASA/JPL.
Use Cases
- Identify flooded areas by analyzing dark blue pixel patterns representing standing water.
- Assess drying progress by comparing light blue-gray pixel patterns in the post-event image.
- Map the boundary of the 17th Street Canal failure using the sharp contrast between flooded and dry land pixels.
- Calculate the extent of inundation by measuring the area of dark blue regions within the 10.4 x 7.1 km scene.
Strengths
- Provides a direct visual comparison between pre-event (2000) and post-event (2005) conditions.
- Images cover a defined 10.4 x 7.1 km area centered on specific coordinates.
- Clear visual differentiation of features like flooded golf courses and city parks.
Limitations
- Limited temporal coverage with only two acquisition dates.
- Unknown spatial resolution and spectral band details for the ASTER imagery.
- No quantitative data columns or metadata provided for automated analysis.
Provenance
- Source
- NASA/JPL via NASA Earthdata platform.
- Collection Method
- Acquired by the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) sensor.
- Time Range
- Pre-event mosaic: April and September 2000. Post-event image: September 13, 2005.
- Freshness
- null
- Geography
- Area of 10.4 x 7.1 km centered near 30 degrees north, 90.1 degrees west (New Orleans, Louisiana, USA).