U.S. Geological Survey
20170308
St. Croix, U.S. Virgin Islands—Seafloor elevation change in Maui, St. Croix, St. Thomas, and the Florida Keys
first
tabular digital data
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: Saint 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. STC_ElevationChange.zip contains the location, elevation, and elevation change data for Buck Island-St.Croix, 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 for the creation of STC_ElevationChange.csv are listed in Yates and others (2016).
1938
2004
ground condition
Not planned
-64.647621
-64.43047
17.835552
17.758585
USGS Metadata Identifier
USGS:8aa8678a-1b12-4607-beaa-ae2ee3cbc321
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. Croix
Buck Island
U.S. Virgin Islands
USGS Thesaurus
coelenterates
geochemistry
marine geology
Oregon Geospatial Enterprise Office (GEO) Stratum Keyword
epipelagic
None
1981-2014
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 and Yates and others 2016 carefully for additional details.
Raw elevation measurements have been determined to be within 1 meter in horizontal accuracy.
The nominal vertical elevation accuracy expressed as the root mean square error (RMSE) for the point elevation data 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
Geologist
mailing and physical address
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
STC_ElevationChange.csv
This file contains data, provided in comma separated values (CSV) format, that were used to compute seafloor elevation change at Maui, Hawaii.
USGS
HSHEET
Hydrographic survey sheet number. The hydrographic sheet (Hsheet) from which the historical bathymetric elevation data was collected.
NOAA
H09936, H10002, H10003
YEAR
Survey Year. Year hydrographic sheet was published
NOAA
1981
1982
Longitude (Geographic NAD83)
Longitude geogrpahic coordinate in NAD83(1986)
USGS
-64.647621
-64.43047
decimal degrees
Latitude (Geographic NAD83)
Latitude geogrpahic coordinate in NAD83(1986)
USGS
17.758585
17.835552
decimal degrees
Longitude (UTM NAD83)
X-coordinate (easting) of sample point, in meters (NAD83, UTM zone 20 N).
USGS
325352.5701
348399.8496
meters
Latitude (UTM NAD83)
Y-coordinate (northing) of sounding, in meters (NAD83, UTM zone 20 N)
USGS
1964166.027
1972588.9
meters
Historical sounding (VIVD09)
historical depth in Virgin Islands Vertical Datum of 2009. Negative values indicate below VIVD09.
U.S. Coast and Geodetic Survey
-36.3906
1.4882
meters
Lidar elevation (VIVD09)
Modern depth in Virgin Islands Vertical Datum of 2009. Negative values indicate below VIVD09.
U.S. Geological Survey
-39.991482
-0.687491
meters
Difference = Lidar - Historical
The difference in the modern and historical depths. Negative values indicate loss of seafloor elevation. Positive values indicate gain of seafloor elevation.
USGS
-8.587481551
6.838700191
meters
Kimberly Yates
USGS
mailing and physical
600 4th Street South
St. Petersburg
FL
33701
USA
727 502-8059
kyates@usgs.go
STC_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/STC_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