Originator: U.S. Geological Survey
St. Thomas, U.S. Virgin Islands-Seafloor elevation change in Maui, St. Croix, St. Thomas, and the Florida Keys
Publication_Place: St. Petersburg, FL
Publisher: U.S. Geological Survey
Coral reefs serve as natural barriers that protect adjacent shorelines from coastal hazards such as storms, waves and erosion but projections indicate global degradation of coral reefs due to anthropogenic impacts and climate change will cause a transition to net erosion by mid-century. The U.S. Geological Survey (USGS) St. Petersburg Coastal and Marine Science Center conducted research to quantify the combined effect of all constructive and destructive processes on modern coral reef ecosystems by measuring regional-scale changes in seafloor elevation. USGS staff assessed five coral reef ecosystems in the Atlantic Ocean (Upper and Lower Florida Keys), Caribbean Sea (U.S. Virgin Islands: St. Thomas and Buck Island, St. Croix), and Pacific Ocean (Maui, Hawaii), including both coral-dominated and adjacent, non-coral dominated habitats. Scientists used historical bathymetric data from the 1930s to 1980s and contemporary light detection and ranging (lidar) digital elevation models (DEMs) from the late 1990s to 2000s to calculate changes in seafloor elevation for each study site over time periods reflecting low to high anthropogenic impacts. STT_ElevationChange.zip contains the location, elevation, and elevation change data for St. Thomas, U.S. Virgin Islands. Using these changes in elevation, further analysis was done to calculate corresponding changes in seafloor volume for all study areas and habitat types within each site.
These data were used to help provide a comprehensive assessment of the combined effect of all processes influencing seafloor accretion and erosion by measuring changes in seafloor elevation and volume for five coral reef ecosystems in the Atlantic and Pacific oceans and Caribbean Sea over the last several decades. Additional methodology and data details are available in Yates and others (2016).
All data sources and descriptions used in the creation of STT_ElevationChange.csv are listed in Yates and others (2016)
Currentness_Reference: ground condition
Maintenance_and_Update_Frequency: Not planned
Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: seafloor elevation
Theme_Keyword: sea level rise
Theme_Keyword: coral reefs
Theme_Keyword: seafloor accretion
Theme_Keyword: seafloor erosion
Theme_Keyword_Thesaurus: Global Change Master Science Directory
Theme_Keyword: OCEAN > BATHYMETRY/SEAFLOOR TOPOGRAPHY > WATER DEPTH
Theme_Keyword: OCEAN > COASTAL PROCESSES > CORAL REEFS
Theme_Keyword: OCEAN > COASTAL PROCESSES > EROSION
Theme_Keyword: OCEAN > COASTAL PROCESSES > SEA LEVEL RISE
DOI/USGS/CMG > COASTAL AND MARINE GEOLOGY, U.S. GEOLOGICAL SURVEY, U.S. DEPARTMENT OF INTERIOR
Theme_Keyword_Thesaurus: GCMD Instrument
Theme_Keyword: LIDAR > LIGHT DETECTION AND RANGING
Place_Keyword_Thesaurus: Geographic Names Information System
Place_Keyword: St. Thomas
Place_Keyword: U.S. Virgin Islands
Stratum_Keyword_Thesaurus: Oregon Geospatial Enterprise Office (GEO) Stratum Keyword
Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. The U.S. Geological Survey requests to be acknowledged as originator of these data in future products or derivative research.
Contact_Person: Kimberly Yates
U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center, St. Petersburg, FL
Address_Type: mailing and physical
Contact_Voice_Telephone: 727 502-8059
Address: 600 4th Street South
City: St. Petersburg
Acknowledgment of the U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center, as a data source would be appreciated in products developed from these data, and such acknowledgment as is standard for citation and legal practices for data source is expected. Sharing of new data layers developed directly from these data would also be appreciated by the U.S. Geological Survey staff. Users should be aware that comparisons with other datasets for the same area from other periods may be inaccurate because of inconsistencies resulting from changes in photointerpretation, mapping conventions, and digital processes over time. These data are not legal documents and are not to be used as such.
Microsoft Windows 7 Enterprise Service Pack 1; Microsoft Excel 2013
Originator: Yates, K.K., Zawada, D.G., Smiley, N.A., and Tiling-Range, G.
Divergence of seafloor elevation and sea level rise in coral reef regions
Series_Name: Biogeosciences Discussions
Publication_Place: St. Petersburg, FL