U.S. Geological Survey
20170308
St. Thomas, U.S. Virgin Islands-Seafloor elevation change in Maui, St. Croix, St. Thomas, and the Florida Keys
first
CSV
St. Petersburg, FL
U.S. Geological Survey
https://doi.org/10.5066/F7WQ01W0
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)
1966
2014
ground condition
Not planned
-65.043984
-64.827501
18.351292
18.266955
USGS Metadata Identifier
USGS:57cb447d-d4e8-4ee8-a174-f7cdb7341236
ISO 19115 Topic Category
geoscientificInformation
elevation
oceans
None
seafloor elevation
sea level rise
coral reefs
seafloor accretion
seafloor erosion
Global Change Master Science Directory
OCEAN > BATHYMETRY/SEAFLOOR TOPOGRAPHY > WATER DEPTH
OCEAN > COASTAL PROCESSES > CORAL REEFS
OCEAN > COASTAL PROCESSES > EROSION
OCEAN > COASTAL PROCESSES > SEA LEVEL RISE
DOI/USGS/CMG > COASTAL AND MARINE GEOLOGY, U.S. GEOLOGICAL SURVEY, U.S. DEPARTMENT OF INTERIOR
GCMD Instrument
LIDAR > LIGHT DETECTION AND RANGING
Geographic Names Information System
St. Thomas
U.S. Virgin Islands
Oregon Geospatial Enterprise Office (GEO) Stratum Keyword
epipelagic
None
1966-2014
None
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.
Kimberly Yates
U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center, St. Petersburg, FL
mailing and physical
600 4th Street South
St. Petersburg
FL
33701
USA
727 502-8059
kyates@usgs.gov
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.
Unclassified
Unclassified
None
Microsoft Windows 7 Enterprise Service Pack 1; Microsoft Excel 2013
Yates, K.K., Zawada, D.G., Smiley, N.A., and Tiling-Range, G.
20170308
Divergence of seafloor elevation and sea level rise in coral reef regions
Biogeosciences Discussions
2016-407
St. Petersburg, FL
Biogeosciences.net
https://doi.org/10.5194/bg-2016-407
A detailed accuracy assessment and error analysis are presented in Yates and others (2016)
Data cover area specified for this project without known issues.
This dataset is considered complete for the information presented, as described in the abstract section. Users are advised to read the rest of the metadata record in Yates and others (2016) carefully for additional details.
Horizontal resolution of LiDAR data is reported as better than 1m.
The nominal vertical elevation accuracy of the point elevation data expressed as the root mean square error (RMSE) is 13.5 centimeters. Typical vertical elevation accuracies for these data are consistent with the point elevation data.
For processing steps and descriptions please refer to: Yates, K.K., Zawada, D.G., Smiley, N.A., Tiling-Range, G., 2016, Seafloor elevation change in Maui, St. Croix, St. Thomas, and the Florida Keys: U.S. Geological Survey data release, https://doi.org/10.5194/bg-2016-407
2015
Kimberly Yates
U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center, St. Petersburg, FL
Research Oceanographer
mailing and physical
600 4th Street South
St. Petersburg
FL
33701
USA
727-502-8059
kyates@usgs.gov
M-F, 9:00-5:00 ET
Added keywords section with USGS persistent identifier as theme keyword.
20201013
U.S. Geological Survey
VeeAnn A. Cross
Marine Geologist
Mailing and Physical
384 Woods Hole Road
Woods Hole
MA
02543-1598
508-548-8700 x2251
508-457-2310
vatnipp@usgs.gov
Points
Point
1.0E-6
1.0E-6
Decimal degrees
North American Datum of 1983 (1986)
Geodetic Reference System 80
6378137.0
298.257222101
Virgin Island Vertical Datum of 2009 (VIVD09) GEOID03
0.2
meters
Explicit elevation coordinate included with horizontal coordinates
STT_ElevationChange.csv
This file contains data, provided in comma separated values (CSV) format, that were used to compute seafloor elevation change in St. Thomas, U.S. Virgin Islands
USGS
HSHEET
Hydrographic survey sheet number. The hydrographic sheet (Hsheet) from which the historical bathymetric elevation data was collected.
NOAA
H08877, H09271, H09272, H09353
YEAR
Survey Year. Year hydrographic sheet was published
NOAA
1966
1973
Longitude (Geographic NAD83)
NAD83(1986) geographic coordinate of sample point, in decimal degrees.
USGS
-65.043984
-64.827501
decimal degrees
Latitude (Geographic NAD83)
NAD83(1986) geographic coordinate of sample point, provided in decimal degrees.
USGS
18.266955
18.351292
decimal degrees
Longitude (UTM NAD83)
X-coordinate (easting) of sample point, in meters (NAD83, UTM zone 20 N).
USGS
284013.4617
306842.8096
Meters
Latitude (UTM NAD83)
Y-coordinate (northing) of sounding, in meters ( NAD83, UTM zone 20 N).
USGS
2020821.706
2030264.483
Meters
Historical sounding (VIVD09)
Historical sounding. Historical depth in North American Vertical Datum of 2009, using the GEOID03 geoid model. Negative values indicate positions below NAVD88.
U.S. Coast and Geodetic Survey
-33.5496
0.0145
Meters
Lidar elevation (VIVD09)
Modern depth in Virgin Islands Vertical Datum of 2009. Negative values indicate below VIVD09.
USGS
-34.31587219
-0.352310926
Meters
Difference = Lidar - Historical
Difference = Lidar - Historical. The difference between the modern (lidar) and historical (Hsheets) depths. Negative values indicate loss of seafloor elevation. Positive values indicate a gain in seafloor elevation.
USGS
-11.16050278
25.60352592
Meters
Kimberly Yates
U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center, St. Petersburg, FL
mailing and physical
600 4th Street South
St. Petersburg
FL
33701
USA
727 502-8059
kyates@usgs.gov
STT_ElevationChange.csv
Although these data have been processed successfully on a computer system at the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data on any other system, or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. The USGS shall not be held liable for improper or incorrect use of the data described or contained herein. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
CSV(Comma Separated Values)
1
RFC 4180
https://coastal.er.usgs.gov/data-release/doi-F7WQ01W0/data/STT_ElevationChange.zip
None
20201013
Kimberly Yates
U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center, St. Petersburg, FL
Research Oceanographer
mailing and physical
600 4th Street South
St. Petersburg
FL
33701
USA
727 502-8059
kyates@usgs.gov
M-F, 9:00-5:00 ET
Content Standard for Digital Geospatial Metadata
FGDC-STD-001-1998
local time