NDLI: Critical elevation levels for flooding due to sea-level rise in Hawai‘i

Content Provider	Springer Nature Link
Author	Kane, Haunani H. Fletcher, Charles H. Frazer, L. Neil Barbee, Matthew M.
Copyright Year	2014
Abstract	Coastal strand and wetland habitats in the Hawaiian Islands are often intensively managed to restore and maintain biodiversity. Due to the low gradient of most coastal plain environments, the rate and aerial extent of sea-level rise (SLR) impact will rapidly accelerate once the height of the sea surface exceeds a critical elevation. Here, we develop this concept by calculating a SLR critical elevation and joint uncertainty that distinguishes between slow and rapid phases of flooding. We apply the methodology to three coastal wetlands on the Hawaiian Islands of Maui and O‘ahu to exemplify the applicability of this methodology for wetlands in the Pacific island region. Using high-resolution LiDAR digital elevation models, flooded areas are mapped and ranked from high (80 %) to low (2.5 %) risk based upon the percent probability of flooding under the B1, A2, and A1Fl emissions scenarios. As the rate of flooding transitioned from the slow to rapid phase, the area (expressed as a percentage of the total) at a high risk of flooding under the A1Fl scenario increased from 21.0 to 53.3 % (south Maui), 0.3 to 18.2 % (north Maui), and 1.7 to 15.9 % (north O‘ahu). At the same time, low risk areas increased from 34.1 to 80.2, 17.7 to 46.9, and 15.4 to 46.3 %. The critical elevation of SLR may have already passed (2003) on south Maui, and decision makers on North Maui and O‘ahu may have approximately 37 years (2050) to develop, and implement adaptation strategies that meet the challenges of SLR in advance of the largest impacts.
Starting Page	1679
Ending Page	1687
Page Count	9
File Format	PDF
ISSN	14363798
Journal	Regional Environmental Change
Volume Number	15
Issue Number	8
e-ISSN	1436378X
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2014-11-29
Publisher Place	Berlin/Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Sea-level rise Wetland Critical elevation LiDAR Digital elevation model Hawaii Climate Change Climate Change/Climate Change Impacts Oceanography Geography Regional/Spatial Science Nature Conservation
Content Type	Text
Resource Type	Article
Subject	Global and Planetary Change

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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