The ways in which the objectives are achieved for this research project are discussed below. The variables chosen to be included in this analysis are first outlined. Next, the methods through which coastal erosion and vulnerability are typically assessed are discussed, followed by a justification for choosing to use a coastal vulnerability index for this particular project. Values are then assigned to each variable within the index model. An outline is included of how the index model is used within GIS to develop two output maps for each island which indicate areas high in human development/activity that contribute to coastal erosion. The first output map identifies watersheds which are most affected by dams that interfere with sediment flow to the coast. The second output map identifies areas around the coast that are high in human development/activity which exacerbates coastal erosion. Finally, the strengths and weakness of using a human-induced coastal vulnerability index are assessed.
Objective 1: Identify socioeconomic variables that contribute to coastal erosion.
Objective 2: Develop a coastal vulnerability index model to identify areas of human development that contribute to coastal erosion.
Objective 3: Apply coastal vulnerability index model to coastal areas in Oahu and Kauai to identify coastlines vulnerable to erosion aggravated by human activity.
Objective 4: Compare resulting maps and analyze strengths and weaknesses of a human-induced coastal vulnerability index.