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Sea level rise effects: Where? When? How? Forsooth?


Prahalad, V and Sharples, C, Sea level rise effects: Where? When? How? Forsooth?, School of Geography & Environmental Studies Conference Abstracts 2010, 28 June 2010, Sandy Bay (2010) [Conference Extract]


Despite the overwhelming evidence pointing towards recent eustatic sea level rise, there is still a lack of clarity (and even incredulity in some cases) as to whether, where, when, and how the effects of sea level rise are becoming apparent on the coastal interface. To investigate these questions, we conducted a study on the intertidal environments of far northwest Tasmania using time series aerial photographs, extensive field mapping of geomorphology, vegetation surveys and wind wave modelling. Results from the study provide good evidence that sea level rise has been happening and has resulted in extensive shoreline retreat with an apparent onset of progressive erosion around 1968-1975. There is a high correlation between the wave-power and mapped shoreline erosion which is consistent with sea level rise as the underlying cause and variable wave exposure as the principle control on the resulting patterns of erosion. The erosion of mature trees and shrubs, landward transgression of saline vegetation and the exposure of very old soil deposits further add evidence to the onset and effects of sea level rise. The findings from this research have several implications for understanding the mechanisms of sea level rise and assessing the vulnerability of coastal values in view of their adaptation management.

Item Details

Item Type:Conference Extract
Keywords:sea level rise, coastal values
Research Division:Environmental Sciences
Research Group:Climate change impacts and adaptation
Research Field:Ecological impacts of climate change and ecological adaptation
Objective Division:Environmental Policy, Climate Change and Natural Hazards
Objective Group:Adaptation to climate change
Objective Field:Ecosystem adaptation to climate change
UTAS Author:Prahalad, V (Dr Vishnu Prahalad)
UTAS Author:Sharples, C (Mr Chris Sharples)
ID Code:65586
Year Published:2010
Deposited By:Geography and Environmental Studies
Deposited On:2010-11-24
Last Modified:2010-11-24

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