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Folders: ROOT > ScienceBase Catalog > National and Regional Climate Adaptation Science Centers > Pacific Islands CASC > FY 2016 Projects > Collecting Elevation Data to Understand Climate Change Effects in the Marshall Islands > Approved Products ( Show all descendants )

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_ScienceBase Catalog
__National and Regional Climate Adaptation Science Centers
___Pacific Islands CASC
____FY 2016 Projects
_____Collecting Elevation Data to Understand Climate Change Effects in the Marshall Islands
______Approved Products
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User’s guide for downloading and using the One Meter Topobathymetric Digital Elevation Model (DEM) for Majuro Atoll, Republic of the Marshall Islands.
Abstract: Satellite-derived near-shore bathymetry (SDB) is becoming an increasingly important method for assessing vulnerability to climate change and natural hazards in low-lying atolls of the northern tropical Pacific Ocean. Satellite imagery has become a cost-effective means for mapping near-shore bathymetry because ships cannot collect soundings safely while operating close to the shore. Also, green laser light detection and ranging (lidar) acquisitions are expensive in remote locations. Previous research has demonstrated that spectral band ratio-based techniques, commonly called the natural logarithm approach, may lead to more precise measurements and modeling of bathymetry because of the phenomenon that different...
This Project Snapshot provides a brief overview summary of the project "Collecting Elevation Data to Understand Climate Change Effects in the Marshall Islands".
Majuro Atoll in the central Pacific has high coastal vulnerability due to low-lying islands, rising sea level, high wave events, eroding shorelines, a dense population center, and limited freshwater resources. Land elevation is the primary geophysical variable that determines exposure to inundation in coastal settings. Accordingly, coastal elevation data (with accuracy information) are critical for assessments of inundation exposure. Previous research has demonstrated the importance of using high-accuracy elevation data and rigorously accounting for uncertainty in inundation assessments. A quantitative analysis of inundation exposure was conducted for Majuro Atoll, including accounting for the cumulative vertical...