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Relative Coastal Change Potential Assessment of Glacier Bay National Park and Preserve to Sea-Level and Coastal Change

Elizabeth A. Pendleton, E. Robert Thieler, S. Jeffress Williams

USGS Open-File Report 2005-1247

Download CPI Shoreline Shapefile and metadata

View photographs from field visit to Glacier Bay National Park and Preserve

Relative Coastal Change Potential for GBNPP. The colored shoreline represents the relative coastal change potential index (CPI) determined from the six variables. The very high change potential shoreline is located along the outer coast where significant wave heights are high and coastal slopes are low. High change potential shoreline exists at tidewater glacier termini within the fjords and areas along Bartlett Cove where there are large amounts of unconsolidated outwash material. Moderate change potential shoreline generally lies within Glacier Bay in areas of alluvium or glacial deposits. The low change potential shoreline is located along rocky areas and sheltered locations in the fjords.

The Change Potential Index (CPI) provides insight into the relative potential of coastal change due to future changes in sea-level. The maps and data presented here can be viewed in at least two ways: 1) as an indication of where physical changes are most likely to occur as sea-level changes; and 2) as a planning tool for Glacier Bay National Park and Preserve.

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