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American Samoa is vulnerable to sea-level rise in part due to the steep terrain of its islands. This terrain requires the majority of the islands’ villages and infrastructure to be located along thin strips of coastal land. The situation is worsened by the recently recognized rapid sinking of the islands, which was triggered by the 2009 Samoa earthquake and is predicted to last for decades. This subsidence is estimated to lead to roughly twice as much sea-level rise by 2060 as what is already predicted from climate change alone. As a result, the timeline of coastal impacts in American Samoa will be decades ahead of similar island communities in the Pacific. Despite this urgency, decision-makers in the region lack...
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The Intergovernmental Panel on Climate Change reports that low-lying atolls (ring-shaped islands or island chains made of coral) in the Pacific Ocean are extremely vulnerable to high tide events (“king tides”), storm surge, tsunamis, and sea-level rise. The Republic of the Marshall Islands (RMI) spreads over 29 atolls and has a population of over 50,000 people with homes and communities that may be threatened by these climate change-related events. Policy makers, planners, and others within RMI are faced with decisions about how to prepare for the future and need scientific data and information about the vulnerability of Pacific Islands to potential climate change impacts like sea-level rise. Topographic and bathymetric...
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With an average elevation of just seven feet above sea level, the Republic of the Marshall Islands is acutely vulnerable to inundation from both episodic events such as storm surge and chronic conditions such as sea-level rise. Some projections estimate that future sea-level rise could exceed the average elevation of these islands by 2100. Already, residents are facing extreme high tides and 16 foot swells that flood the islands with saltwater, damaging homes and infrastructure and contaminating the freshwater supply. Land elevation is the primary factor that determines the vulnerability of coastal areas to inundation. This project builds on previous work in which a 1-meter resolution digital elevation model (DEM)...
User’s guide for downloading and using the One Meter Topobathymetric Digital Elevation Model (DEM) for Majuro Atoll, Republic of the Marshall Islands.
This Project Snapshot provides a brief overview summary of the project "Collecting Elevation Data to Understand Climate Change Effects in the Marshall Islands".
    map background search result map search result map Collecting Elevation Data to Understand Climate Change Effects in the Marshall Islands Characterizing Inundation Risk for Majuro Atoll Sea-Level Rise Viewer for American Samoa: A Co-Developed Visualization and Planning Tool Collecting Elevation Data to Understand Climate Change Effects in the Marshall Islands Characterizing Inundation Risk for Majuro Atoll Sea-Level Rise Viewer for American Samoa: A Co-Developed Visualization and Planning Tool