Aerial videotape mapping of coastal geomorphic changes
By: Karolien Debusschere, Shea Penland, Karen A. Westphal, P. Douglas Reimer, and Randolph A. McBride
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Abstract
An aerial geomorphic mapping system was developed to examine the spatial and temporal variability in the coastal geomorphology of Louisiana. Between 1984 and 1990 eleven sequential annual and post-hurricane aerial videotape surveys were flown covering periods of prolonged fair weather, hurricane impacts and subsequent post-storm recoveries. A coastal geomorphic classification system was developed to map the spatial and temporal geomorphic changes between these surveys. The classification system is based on 10 years of shoreline monitoring, analysis of aerial photography for 1940-1989, and numerous field surveys. The classification system divides shorelines into two broad classes: natural and altered. Each class consists of several genetically linked categories of shorelines. Each category is further subdivided into morphologic types on the basis of landform relief, elevation, habitat type, vegetation density and type, and sediment characteristics. The classification is used with imagery from the low-altitude, high-resolution aerial videotape surveys to describe and quantify the longshore and cross-shore geomorphic, sedimentologic, and vegetative character of Louisiana's shoreline systems. The mapping system makes it possible to delineate and map detailed geomorphic habitat changes at a resolution higher than that of conventional vertical aerial photography. Morphologic units are mapped parallel to the regional shoreline from the aerial videotape imagery onto the base maps at a scale of 1:24,000. The base maps were constructed from vertical aerial photography concurrent with the data of the video imagery.
Suggested Citation
Debusschere, K., Penland, S., Westphal, K.A., Reimer, P.D., McBride, R.A., 1991, Aerial videotape mapping of coastal geomorphic changes, in Coastal Zone: Proceedings of the Symposium on Coastal and Ocean Management, v. 1, Long Beach, CA, USA, 8 July 1991 through 12 July 1991, p. 370-390.
| Publication type | Conference Paper |
|---|---|
| Publication Subtype | Conference Paper |
| Title | Aerial videotape mapping of coastal geomorphic changes |
| ISBN | 0872628094 |
| Volume | 1 |
| Year Published | 1991 |
| Language | English |
| Publisher | Publ by ASCE |
| Publisher location | New York, NY, United States |
| Larger Work Title | Coastal Zone: Proceedings of the Symposium on Coastal and Ocean Management |
| First page | 370 |
| Last page | 390 |
| Conference Title | Proceedings of the 7th Symposium on Coastal and Ocean Management Part 4 (of 4) |
| Conference Location | Long Beach, CA, USA |
| Conference Date | 8 July 1991 through 12 July 1991 |