Coastal Changes and Impacts

Topobathymetric Elevation Model of Majuro Atoll, Republic of the Marshall Islands

With an estimated elevation of only 3-meters above sea level, the Majuro Atoll, capital of the Republic of the Marshall Islands (RMI), is extremely vulnerable to sea-level rise, tsunamis, storm surge, and coastal flooding that could impact the sustainability of the infrastructure, groundwater, and ecosystems. Located in the northern tropical Pacific Ocean, the waters surrounding the Majuro Atoll land areas are relatively shallow with poorly mapped bathymetry.

To support the modeling of storm- and tide-induced flooding, the U.S. Geological Survey (USGS) Coastal National Elevation Database (CoNED) Applications Project in collaboration with the U. S. Department of Interior (DOI) Pacific Islands Climate Science Center (PI-CSC) and the USGS Coastal and Marine Geology Program (CMGP) developed an integrated 1-meter topobathymetric digital elevation model (TBDEM) for the Majuro Atoll, RMI, using a combination of nine best available multi-source topographic and bathymetric data for the Majuro Atoll onshore and offshore:

This research effort was a collaboration with DOI PI-CSC, USGS CMGP, University of Guam, University of Hawaii at Mânoa, NOAA/National Geodetic Survey, Marshall Islands Conservation Society, RMI Office of Lands and Survey, and RMI Environmental Protection Authority.

For additional information or to download the Majuro Atoll topobathymetric elevation model, visit USGS ScienceBase at https://doi.org/10.5066/F7416VXX or https://topotools.cr.usgs.gov/posters/majuro.pdf.



Topobathymetric elevation model of the Majuro Atoll, Republic of the Marshall Islands. USGS image created by Monica Palaseanu-Lovejoy.


 


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