USGS Coastal and Marine Hazards and Resources Program
Historical Shoreline Changes at Rincón, Puerto Rico, 1936-2006
Table 1. Data sources used in this study and their associated error estimates.
[GPS, Global Positioning System]
| Shoreline year |
Source |
|---|---|
1936 |
Rectified digital air photo |
1950/1951 |
Air photo (Thieler and Carlo, 1995) |
1963 |
Air photo (Thieler and Carlo, 1995) |
1971 |
Air photo (Thieler and Carlo, 1995) |
1974 |
Air photo (Thieler and Carlo, 1995) |
1977 |
Air photo (Thieler and Carlo, 1995) |
1983 |
Rectified digital air photo |
1987 |
Air photo (Thieler and Carlo, 1995)1 |
1989 |
Air photo (Thieler and Carlo, 1995) |
1994 |
GPS |
2004 |
Digital orthophoto |
2005 |
GPS |
2006 |
GPS |
Shoreline positions produced by methods of Thieler and Carlo (1995),and those produced by digitizing from a rectified digital air photo were compared. Shoreline positions are statistically similar. Data from Thieler and Carlo (1995) were used.
