Seafloor Elevation Change From 2016 to 2017 at Crocker Reef, Florida Keys-Impacts From Hurricane Irma

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Metadata:

Identification_Information
Data_Quality_Information
Spatial_Data_Organization_Information
Spatial_Reference_Information
Entity_and_Attribute_Information
Distribution_Information
Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: Kimberly K. Yates
Originator: David G. Zawada
Originator: Stephanie R. Arsenault
Originator: Zachery W. Fehr
Publication_Date: 20190801
Title:

Seafloor Elevation Change From 2016 to 2017 at Crocker Reef, Florida Keys-Impacts From Hurricane Irma

Geospatial_Data_Presentation_Form: Multimedia presentation
Series_Information:

Series_Name: U.S. Geological Survey Data Release
Issue_Identification: doi:10.5066/P9JI465S

Publication_Information:

Publication_Place: St. Petersburg, FL
Publisher: U.S. Geological Survey

Online_Linkage: https://doi.org/10.5066/P9JI465S
Larger_Work_Citation:

Citation_Information:

Originator: Kimberly K. Yates
Originator: David G. Zawada
Originator: Nathan A. Smiley
Originator: Ginger Tiling-Range
Publication_Date: 20170420
Title:

Divergence of seafloor elevation and sea level rise in coral reef ecosystems

Geospatial_Data_Presentation_Form: Publication
Publication_Information:

Publication_Place: Munich, Germany
Publisher: Biogeosciences

Online_Linkage: https://doi.org/10.5194/bg-14-1739-2017

Description:

Abstract:

The U.S. Geological Survey (USGS) St. Petersburg Coastal and Marine Science Center conducted research to quantify bathymetric changes at Crocker Reef near Islamorada, Florida (FL), within a 33.6 square-kilometer area following the landfall of Hurricane Irma in September 2017. USGS staff used light detection and ranging (lidar)-derived data acquired by the National Oceanic and Atmospheric Administration (NOAA) between July 21 and November 21, 2016 and USGS multibeam data collected between October 10 and December 8, 2017 (Fredericks and others, 2019) to assess changes in seafloor elevation and structure that occurred after the passage of Hurricane Irma. An elevation change analysis between the 2016 NOAA lidar data and the 2017 multibeam data was performed to quantify and map impacts to seafloor elevations and to determine elevation and volume change statistics for nine habitat types found at Crocker Reef, FL. Data were collected under Florida Keys National Marine Sanctuary permit FKNMS-2016-068.

Purpose:

These data were used to determine seafloor elevation and volume changes, from 2016 to 2017, in Crocker Reef, FL.

Supplemental_Information:

The lidar data were collected by NOAA National Geodetic Survey (NGS) Remote Sensing Division using a Riegl VQ820G system. The lidar data are an ancillary product of NOAA's Coastal Mapping Program (CMP), created through a wider Integrated Ocean and Coastal Mapping initiative to increase support for multiple uses of the data. The multibeam bathymetry data were collected using two Teledyne SeaBat T50-P multibeam echosounders, in a dual head configuration. Data were collected under Florida Keys National Marine Sanctuary permit FKNMS-2016-068.

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20160721
Ending_Date: 20171208

Currentness_Reference: ground condition

Status:

Progress: Complete
Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -80.586875
East_Bounding_Coordinate: -80.500711
North_Bounding_Coordinate: 24.954833
South_Bounding_Coordinate: 24.885565

Keywords:

Theme:

Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:65e7ae1e-c2c9-4d8e-a327-25f494dea904

Theme:

Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: marine geology
Theme_Keyword: sea-floor characteristics
Theme_Keyword: sea-level change
Theme_Keyword: reef ecosystems
Theme_Keyword: coelenterates
Theme_Keyword: lidar
Theme_Keyword: multibeam sonar
Theme_Keyword: digital elevation models

Theme:

Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: geoscientificInformation
Theme_Keyword: elevation
Theme_Keyword: oceans

Theme:

Theme_Keyword_Thesaurus: None
Theme_Keyword: seafloor elevation
Theme_Keyword: sea level rise
Theme_Keyword: seafloor accretion
Theme_Keyword: seafloor erosion
Theme_Keyword: elevation change
Theme_Keyword: altimetry
Theme_Keyword: submerged topography

Theme:

Theme_Keyword_Thesaurus: Global Change Master Science Directory
Theme_Keyword: OCEAN > BATHYMETRY/SEAFLOOR TOPOGRAPHY > WATER DEPTH
Theme_Keyword: OCEAN > COASTAL PROCESSES > COASTAL ELEVATION
Theme_Keyword: OCEAN > COASTAL PROCESSES > CORAL REEFS
Theme_Keyword: OCEAN > COASTAL PROCESSES > EROSION
Theme_Keyword: OCEAN > COASTAL PROCESSES > SEA LEVEL RISE
Theme_Keyword:

DOI/USGS/CMG > COASTAL AND MARINE GEOLOGY, U.S. GEOLOGICAL SURVEY, U.S. DEPARTMENT OF INTERIOR

Theme:

Theme_Keyword_Thesaurus: GCMD Instrument
Theme_Keyword: LIDAR > LIGHT DETECTION AND RANGING
Theme_Keyword: MBES > MULTIBEAM MAPPING SYSTEM

Place:

Place_Keyword_Thesaurus: Geographic Names Information System
Place_Keyword: Crocker Reef
Place_Keyword: Florida Keys
Place_Keyword: Florida

Place:

Place_Keyword_Thesaurus: None
Place_Keyword: Florida Reef Tract
Place_Keyword: Florida Keys National Marine Sanctuary

Stratum:

Stratum_Keyword_Thesaurus: None
Stratum_Keyword: submerged
Stratum_Keyword: seafloor

Temporal:

Temporal_Keyword_Thesaurus: None
Temporal_Keyword: 2016-2017

Access_Constraints: None
Use_Constraints:

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.

Point_of_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Kimberly K. Yates
Contact_Organization: Southeast Region: ST. PETE COASTAL & MARINE SCIENCE CENTER

Contact_Position: Research Oceanographer
Contact_Address:

Address_Type: mailing and physical
Address: 600 4Th Street South
City: St. Petersburg
State_or_Province: FL
Postal_Code: 33701
Country: United States

Contact_Voice_Telephone: 727-502-8059
Contact_Electronic_Mail_Address: kyates@usgs.gov

Cross_Reference:

Citation_Information:

Originator: International Hydrographic Organization
Publication_Date: 2008
Title: IHO Standards for Hydrographic Surveys
Publication_Information:

Publication_Place:

4, quai Antoine 1er B.P. 445 - MC 98011 MONACO Cedex Principauté de Monaco

Publisher: International Hydrographic Bureau

Other_Citation_Details: pages 15-16
Online_Linkage: https://www.iho.int/iho_pubs/standard/S-44_5E.pdf

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

Datasets were visually compared by USGS staff in Esri ArcGIS Desktop Advanced version 10.6 for identification of anomalous elevations or data inconsistencies.

Logical_Consistency_Report:

Data cover the area specified for this project, without any known issues.

Completeness_Report:

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 (2017) carefully for additional details.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

For the 2016 lidar, the data positions were obtained using post-processed kinematic global positioning system (KGPS) methods. The horizontal accuracy of the data is better than plus or minus 1.0 meter (m); Quantitative Value: 1.0 m. Multibeam data were collected and processed to meet or exceed International Hydrographic Organization (IHO) Special Order Standards for positioning and depth (IHO, 2008).

Vertical_Positional_Accuracy:

Vertical_Positional_Accuracy_Report:

For the 2016 lidar, the data positions were obtained using post processed KGPS methods. Data used to test the lidar were collected with static GPS observational equipment and compared against the published data. The vertical accuracy of the data is better than plus or minus 0.15 m; Quantitative Value: 0.15 meters. Multibeam data were collected and processed to meet or exceed IHO Special Order Standards for positioning and depth (IHO, 2008).

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Originator:

National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), National Geodetic Survey (NGS), Remote Sensing Division

Publication_Date: 20170614
Title:

2016 NOAA NGS Topobathy Lidar DEM: Florida Keys Outer Reef Block 02

Geospatial_Data_Presentation_Form: DEM
Publication_Information:

Publication_Place: Charleston, SC
Publisher: National Oceanic and Atmospheric Administration

Online_Linkage: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=6364

Type_of_Source_Media: topobathy data
Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20160721
Ending_Date: 20161121

Source_Currentness_Reference: ground condition

Source_Citation_Abbreviation: 2016 Crocker Reef lidar
Source_Contribution:

The original lidar data used to calculate elevation and volume change statistics for Crocker Reef from 2016 to 2017.

Source_Information:

Source_Citation:

Citation_Information:

Originator:

Jake J. Fredericks, Billy J. Reynolds, Andrew S. Farmer, Kimberly K. Yates, and David G. Zawada

Publication_Date: 20190701
Title:

Multibeam Bathymetry Data Collected in October and December 2017 at Crocker Reef, the Florida Keys

Geospatial_Data_Presentation_Form: Tabular digital data
Series_Information:

Series_Name: U.S Geological Survey Data Release
Issue_Identification: doi:10.5066/P9EASN2O

Publication_Information:

Publication_Place: St. Petersburg, FL
Publisher: U.S. Geological Survey

Online_Linkage: https://doi.org/10.5066/P9EASN2O

Type_of_Source_Media: bathymetry data
Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20170809
Ending_Date: 20170812

Source_Currentness_Reference: ground condition

Source_Citation_Abbreviation: 2017 Crocker Reef multibeam
Source_Contribution:

The original multibeam data used to calculate elevation and volume change statistics for Crocker Reef from 2016 to 2017.

Source_Information:

Source_Citation:

Citation_Information:

Originator:

Florida Fish and Wildlife Conservation Commission, Fish and Wildlife Research Institute

Publication_Date: 20170113
Title: Unified Florida Reef Tract Map Version 2.0
Geospatial_Data_Presentation_Form: Shapefile
Publication_Information:

Publication_Place: St. Petersburg, FL
Publisher: Fish and Wildlife Research Institute

Online_Linkage:

http://ocean.floridamarine.org/IntegratedReefMap/UnifiedReefTract.htm

Type_of_Source_Media: Vector digital data
Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 19910101
Ending_Date: 20130101

Source_Currentness_Reference: ground condition

Source_Citation_Abbreviation: Habitat file
Source_Contribution:

This shapefile was used to divide the digital elevation model (DEM) by habitat types using Unified Classification (UC) Class Level 2.

Process_Step:

Process_Description:

Step 1: The original 2016 NOAA NGS Topography Lidar DEM: Florida Keys Outer Reef Block 02 tagged image file format (TIFF) DEM was downloaded from https://inport.nmfs.noaa.gov/inport/item/49423 using the "Customized Download" capability of NOAA’s DigitalCoast website. The data were downloaded with the following parameters: UTM Zone: Zone 17 Range 084W-078W; Horizontal Datum: NAD83; Horizontal Units: Meters; Vertical Datum: NAVD88; Vertical Units: Meters; File Format: Tiff 32-bit Float; Bin Method: TIN; Bin Size: 1.0; Bin Units: Meters; Data Classification: Bathymetric Lidar Points; Data Returns: Any Points; Ancillary Data: No Ancillary Data; and Geoid Name: GEOID12B. The original 2017 Crocker Reef XYZ multibeam data were downloaded from https://coastal.er.usgs.gov/data-release/doi-P9EASN2O and transformed from their native World Geodetic System of 1984 (WGS84) horizontal datum and ellipsoid heights to the North American Datum of 1983 NAD83(2007) horizontal datum, North American Vertical Datum of 1988 (NAVD88) and applied GEOID12B model using a publicly available software package from NOAA called VDatum version 3.9 (https://vdatum.noaa.gov/). The transformed XYZ points were loaded into Blue Marble Global Mapper version 18.2 and gridded using the "Create Elevation Grid from 2D Vector/Lidar Data" tool in the Analysis menu. Grid spacing was manually set to 1 meter (m) for the X- and Y-axes and the 'Elevation Grid No data Distance Criteria' was set to 3.0. The resultant DEM was exported as a TIFF with the following parameters: 32-bit floating point samples, Sample Spacing of 1 m for both X- and Y-axes, Always Generate Square Pixels, LZW Compression, Generate TFW (World) File, and Generate PRJ File.

Process_Date: 2019

Process_Step:

Process_Description:

Step 2: Using Esri ArcGIS Desktop Advanced version 10.6, footprints of the original 2016 lidar and 2017 multibeam data were created with the "Reclassify (Spatial Analyst)" tool in ArcToolbox. To create each raster file, all old data values were replaced with 1 and the 'No Data' value with 0 to create the raster files. Then, the "Raster to Polygon (Conversion)" tool was used to create a footprint of the original lidar and original multibeam data by converting the raster files to polygon shape (SHP) files.

Process_Date: 2019

Process_Step:

Process_Description:

Step 3: A polygon SHP file of the geometric intersection between the lidar and multibeam was created with the "Intersect (Analysis)" tool by adding the lidar and multibeam footprint SHP files (Step 2) as 'Input features', creating the Intersect_footprint SHP file. Then, the lidar and multibeam TIFF's (Step 1) were clipped to the extent of the Intersect_footprint SHP file using the "Clip (Data Management)" tool by specifying the lidar or multibeam TIFF as the 'Input Features' and the Intersect_footprint SHP file as the 'Clip Features', creating the 2016_CrockerReef_Lidar_Clip TIFF and the 2017_CrockerReef_Multibeam_Clip TIFF.

Process_Date: 2019

Process_Step:

Process_Description:

Step 4: A 2-m grid was created using the "Create Fishnet (Data Management)" tool with the following parameters: Template extent: Intersect_footprint SHP file (Step 3); Cell size width: 2; Cell size height: 2; Number of Rows: left blank, Number of Columns: left blank; Geometry type: POLYLINE and box checked for 'Create Label Points'. The 2m_grid_label SHP file was clipped to the extent of the Intersect_footprint SHP file using the "Clip (Analysis)" tool by specifying the 2m_grid_label SHP file as the 'Input features' and the Intersect_footprint SHP file as the 'Clip features.' XY coordinates were added to the 2m_grid_label SHP file using the "Add XY Coordinates (Data Management)" tool.

Process_Date: 2019

Process_Step:

Process_Description:

Step 5: Values from the 2016_Lidar_Clip TIFF (Step 3) and 2017_Multibeam_Clip TIFF (Step 3) were extracted at the location of the 2m_grid_label points using the "Extract Values to Points (Spatial Analyst)" tool by specifying the 2m_grid_label SHP file as the 'Input point features' and the 2016_Lidar_Clip TIFF or the 2017_Multibeam_Clip TIFF as the 'Input', creating the Lidar_Extract_Points SHP file and the Multibeam_Extract_Points SHP file. Then, the Lidar_Extract_Points and the Multibeam_Extract_Points SHP files were spatially joined using the "Spatial Join (Analysis)" tool with the following parameters: Target features: Multibeam_Extract_Points; Join features: Lidar_Extract_Points, Join Operation: ONE_TO_ONE and Match Option: Intersect; and Distance field name: left blank.

Process_Date: 2019

Process_Step:

Process_Description:

Step 6: Points with no data were removed from the 2m_grid_label SHP file using the "Select by Attribute" tool to select points from the attribute table where the RASTERVALU (2017 multibeam) or the RASTERVA_1 (2016 lidar) equaled -9999. Then the "Editor Toolbox" was used to delete the points. The same method was used to remove an additional 970 spurious points (CrockerReef_Lidar_EdgeEffects_Points SHP file) caused by false returns from the lidar, creating the CrockerReef_IntersectPoints SHP file. The elevation difference (Diff_m) between the multibeam and the lidar data were calculated by adding a field to the attribute table of the CrockerReef_IntersectPoints SHP file using the "Field Calculator" and the expression Diff_m = [RASTERVALU]-[RASTERVA_1].

Process_Date: 2019

Process_Step:

Process_Description:

Step 7: The original Unified Florida Reef Tract Map version 2.0 SHP file was downloaded from http://ocean.floridamarine.org/IntegratedReefMap/UnifiedReefTract.htm. Using Esri ArcGIS, the original habitat SHP file was modified using the "Clip (Analysis)" tool to clip the habitat SHP file to the extent of the Intersect_footprint (Step 3) by specifying the habitat SHP file as the 'Input Features' and the Intersect_footprint SHP file as the 'Clip Features', creating the CrockerReef_Habitat_Clip. Using the "Select by Attribute" tool, individual habitat SHP files were created from the CrockerReef_Habitat_Clip SHP file using the "Select by Attribute" tool to select one ClassLv2 habitat and exporting as a separate SHP file.

Process_Date: 2019

Process_Step:

Process_Description:

Step 8: Elevation change statistics were determined by habitat type using the XYZ points from the CrockerReef_IntersectPoints SHP file. The "Select Layer by Location (Data Management)" tool was used to extract points within or on the boundary of a specific habitat type by using the following parameters: Input Feature Layer: CrockerReef_IntersectPoints; Relationship: INTERSECT; Selecting Features: Habitat SHP file; Search Distance: left blank; and Selection type: NEW_SELECTION. An ArcMap model was created to automate the process, because these steps had to be repeated for 9 habitat types. Elevation change statistics from Crocker Reef were compiled by habitat type into a comma separated values (CSV) table using Microsoft Excel 2016, see CrockerReef_Elevation_Statistics.csv.

Process_Date: 2019

Process_Step:

Process_Description:

Step 9: An elevation change surface model was created using the "Create TIN (3D Analyst)" tool by specifying the CrockerReef_IntersectPoints SHP file (Step 6) as the 'Input Feature Class', Diff_m as the 'Height Field' and Mass_Points as the 'Type', creating the Intersect_TIN file. Then, the Intersect_TIN file was delineated using the "Delineate TIN Data Areas (3D Analyst)" tool by specifying the Intersect_TIN as the 'Input TIN', a 'Maximum Edge Length' of 2.828428 (hypotenuse of a 2-m grid) and the 'Method' set to ALL. The delineated Intersect_TIN was clipped to the extent of the Intersect_footprint SHP file (Step 4) using the "Edit TIN (3D Analyst)" tool with the following parameters: Input TIN: Intersect_TIN; Input Features Class: Intersect_footprint SHP file; Height Field: None, Tag Field: None; and Type: Hard clip.

Process_Date: 2019

Process_Step:

Process_Description:

Step 10: In addition to elevation-change statistics, volume-change statistics per habitat type were calculated using the final TIN (Step 9). Surface volume changes were calculated for four cases using the "Surface Volume (3D Analyst)" tool. To calculate the net erosion lower limit (case 1) the 'Reference Plane' was set to BELOW and the 'Plane Height' set to -0.212 m. For the net erosion upper limit (case 2) the 'Reference Plane' was set to BELOW and the 'Plane Height' set to 0 m. For the net accretion lower limit (case 3) the 'Reference Plane' was set to ABOVE and the 'Plane Height' was set to 0.212 m. For the net accretion upper limit (case 4) the 'Reference Plane' was set to ABOVE and the 'Plane Height' was set to 0 m. A 0.212 m threshold was determined by vertical error analysis using the uncertainties reported in the metadata of the original lidar (0.15 m) and multibeam (0.15m) products to calculate the Root Mean Square Error (RMSE) of 0.212 m. Minimum net volume was calculated by summing results from cases 1 and 3. Maximum net volume was calculated by summing results from cases 2 and 4. Area normalized volume change lower limit was calculated by dividing the minimum net volume change for each habitat by the habitats total area. The area normalized volume change upper limit was calculated by diving the maximum net volume for each habitat by the habitats total area. An ArcMap model was created to automate the process, because these steps had to be repeated for 9 habitat types. Volume change statistics from Crocker Reef were compiled by habitat type in CSV format using Microsoft Excel 2016, see CrockerReef_Volume_Statistics.csv.

Process_Date: 2019

Process_Step:

Process_Description:

Added keywords section with USGS persistent identifier as theme keyword.

Process_Date: 20201013
Process_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey
Contact_Person: VeeAnn A. Cross

Contact_Position: Marine Geologist
Contact_Address:

Address_Type: Mailing and Physical
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598

Contact_Voice_Telephone: 508-548-8700 x2251
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: vatnipp@usgs.gov

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: Entity Point
Point_and_Vector_Object_Count: 8402223

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Planar:

Grid_Coordinate_System:

Grid_Coordinate_System_Name: Universal Transverse Mercator
Universal_Transverse_Mercator:

UTM_Zone_Number: 17
Transverse_Mercator:

Scale_Factor_at_Central_Meridian: 0.999600
Longitude_of_Central_Meridian: -81.0
Latitude_of_Projection_Origin: 0.0
False_Easting: 500000.0
False_Northing: 0.0

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:

Abscissa_Resolution: 0.6096
Ordinate_Resolution: 0.6096

Planar_Distance_Units: METERS

Geodetic_Model:

Horizontal_Datum_Name:

North American Datum of 1983 National Spatial Reference System (2007)

Ellipsoid_Name: GRS_1980
Semi-major_Axis: 6378137.0
Denominator_of_Flattening_Ratio: 298.257222

Vertical_Coordinate_System_Definition:

Altitude_System_Definition:

Altitude_Datum_Name: North American Vertical Datum of 1988 (NAVD88) GEOID12B
Altitude_Resolution: 0.2
Altitude_Distance_Units: meters
Altitude_Encoding_Method:

Explicit elevation coordinate included with horizontal coordinates

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: CrockerReef_Elevation_Statistics.csv
Entity_Type_Definition:

Crocker Reef elevation change statistics per habitat type from 2016 to 2017.

Entity_Type_Definition_Source: USGS

Attribute:

Attribute_Label: Habitat types in Crocker Reef study site
Attribute_Definition:

The habitat types found in the Crocker Reef study site. Habitat types are defined by the Unified Florida Reef Tract Map Version 2.0 and based on the Unified Classification (UC) system Class Level 2.

Attribute_Definition_Source: Florida Fish and Wildlife Conservation Commission (FWC)
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Total study site
Enumerated_Domain_Value_Definition: The total Crocker Reef study site, includes 9 habitat types.
Enumerated_Domain_Value_Definition_Source: USGS

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Aggregate reef
Enumerated_Domain_Value_Definition:

Aggregate reef larger than 1 hectare (ha), contiguous reef, lacking sand channels.

Enumerated_Domain_Value_Definition_Source: FWC

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Individual or aggregated patch reef
Enumerated_Domain_Value_Definition:

Patch reefs smaller than 1 ha, isolated reefs often with distinct halo or reef features covering >10% of the area.

Enumerated_Domain_Value_Definition_Source: FWC

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Pavement
Enumerated_Domain_Value_Definition:

Contiguous to patchy pavement, lacking spur and groove channel formations.

Enumerated_Domain_Value_Definition_Source: FWC

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Pavement with sand channels
Enumerated_Domain_Value_Definition:

Alternating linear sand and pavement formations, perpendicular to reef crest.

Enumerated_Domain_Value_Definition_Source: FWC

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Reef rubble
Enumerated_Domain_Value_Definition: Unconsolidated, dead, unstable coral rubble.
Enumerated_Domain_Value_Definition_Source: FWC

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Scattered rock or coral in unconsolidated sediment
Enumerated_Domain_Value_Definition:

Less than 150 square meters, mostly sand, reef features covering <10% of the area.

Enumerated_Domain_Value_Definition_Source: FWC

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Seagrass continuous
Enumerated_Domain_Value_Definition: Continuous seagrass beds.
Enumerated_Domain_Value_Definition_Source: FWC

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Seagrass discontinuous
Enumerated_Domain_Value_Definition: Discontinuous seagrass beds.
Enumerated_Domain_Value_Definition_Source: FWC

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Unconsolidated sediment
Enumerated_Domain_Value_Definition: Unconsolidated sediment
Enumerated_Domain_Value_Definition_Source: FWC

Attribute:

Attribute_Label: Total points (no.)
Attribute_Definition:

The total number of points within or on the boundary of each Crocker Reef habitat type.

Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 10997
Range_Domain_Maximum: 8402223
Attribute_Units_of_Measure: number of points

Attribute:

Attribute_Label: Mean elevation change (m)
Attribute_Definition:

Mean elevation change per habitat type in the Crocker Reef study site from 2016 to 2017, in meters.

Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.25454
Range_Domain_Maximum: 0.615626
Attribute_Units_of_Measure: meters

Attribute:

Attribute_Label: Mean elevation change SD (m)
Attribute_Definition: Standard deviation of the mean elevation change, in meters.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.07704
Range_Domain_Maximum: 0.329939
Attribute_Units_of_Measure: meters

Attribute:

Attribute_Label: Accretion points (no.)
Attribute_Definition:

The total number of accretion points within or on the boundary of each Crocker Reef habitat type.

Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 10620
Range_Domain_Maximum: 8289476
Attribute_Units_of_Measure: number of points

Attribute:

Attribute_Label: Max accretion (m)
Attribute_Definition:

Maximum accretion per habitat type in the Crocker Reef study site from 2016 to 2017, in meters.

Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 1.166664
Range_Domain_Maximum: 4.712902
Attribute_Units_of_Measure: meters

Attribute:

Attribute_Label: Min accretion (m)
Attribute_Definition:

Minimum accretion per habitat type in the Crocker Reef study site from 2016 to 2017, in meters.

Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0
Range_Domain_Maximum: 0.00053
Attribute_Units_of_Measure: meters

Attribute:

Attribute_Label: Mean accretion (m)
Attribute_Definition:

Mean accretion per habitat type in the Crocker Reef study site from 2016 to 2017, in meters.

Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.26675
Range_Domain_Maximum: 0.63076
Attribute_Units_of_Measure: meters

Attribute:

Attribute_Label: Mean accretion SD (m)
Attribute_Definition: Standard deviation of the mean accretion, in meters.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.067112
Range_Domain_Maximum: 0.298326
Attribute_Units_of_Measure: meters

Attribute:

Attribute_Label: Erosion points (no.)
Attribute_Definition:

The total number of erosion points within or on the boundary of each Crocker Reef habitat type.

Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 21
Range_Domain_Maximum: 112747
Attribute_Units_of_Measure: number of points

Attribute:

Attribute_Label: Max erosion (m)
Attribute_Definition:

Maximum erosion per habitat type in the Crocker Reef study site from 2016 to 2017, in meters.

Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: -3.459069
Range_Domain_Maximum: -0.125343
Attribute_Units_of_Measure: meters

Attribute:

Attribute_Label: Min erosion (m)
Attribute_Definition:

Minimum erosion per habitat type in the Crocker Reef study site from 2016 to 2017, in meters.

Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: -0.000203
Range_Domain_Maximum: -0.000001
Attribute_Units_of_Measure: meters

Attribute:

Attribute_Label: Mean erosion (m)
Attribute_Definition:

Mean erosion per habitat type in the Crocker Reef study site from 2016 to 2017, in meters.

Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: -0.380553
Range_Domain_Maximum: -0.030589
Attribute_Units_of_Measure: meters

Attribute:

Attribute_Label: Mean erosion SD (m)
Attribute_Definition: Standard deviation of the mean erosion, in meters.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.028252
Range_Domain_Maximum: 0.402278
Attribute_Units_of_Measure: meters

Detailed_Description:

Entity_Type:

Entity_Type_Label: CrockerReef_Volume_Statistics.csv
Entity_Type_Definition:

Volume statistics by habitat type in Crocker Reef from 2016 to 2017.

Entity_Type_Definition_Source: USGS

Attribute:

Attribute_Label: Habitat types in Crocker Reef study site
Attribute_Definition:

The habitat types found in Crocker Reef. Habitat types are defined by the Unified Florida Reef Tract Map Version 2.0 and based on the Unified Classification (UC) system Class Level 2.

Attribute_Definition_Source: FWC
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Total study site
Enumerated_Domain_Value_Definition: The total Crocker Reef study site, includes 9 habitat types.
Enumerated_Domain_Value_Definition_Source: USGS

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Aggregate reef
Enumerated_Domain_Value_Definition:

Aggregate reef larger than 1 hectare (ha), contiguous reef, lacking sand channels.

Enumerated_Domain_Value_Definition_Source: FWC

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Individual or aggregated patch reef
Enumerated_Domain_Value_Definition:

Patch reefs smaller than 1 ha, isolated reefs often with distinct halo or reef features covering >10% of the area.

Enumerated_Domain_Value_Definition_Source: FWC

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Pavement
Enumerated_Domain_Value_Definition:

Contiguous to patchy pavement, lacking spur and groove channel formations.

Enumerated_Domain_Value_Definition_Source: FWC

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Pavement with sand channels
Enumerated_Domain_Value_Definition:

Alternating linear sand and pavement formations, perpendicular to reef crest.

Enumerated_Domain_Value_Definition_Source: FWC

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Reef rubble
Enumerated_Domain_Value_Definition: Unconsolidated, dead, unstable coral rubble.
Enumerated_Domain_Value_Definition_Source: FWC

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Scattered coral or rock in unconsolidated sediment
Enumerated_Domain_Value_Definition:

Less than 150 square meters, mostly sand, reef features covering <10% of the area.

Enumerated_Domain_Value_Definition_Source: FWC

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Seagrass continuous
Enumerated_Domain_Value_Definition: Continuous seagrass beds.
Enumerated_Domain_Value_Definition_Source: FWC

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Seagrass discontinuous
Enumerated_Domain_Value_Definition: Discontinuous seagrass beds.
Enumerated_Domain_Value_Definition_Source: FWC

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Unconsolidated sediment
Enumerated_Domain_Value_Definition: Unconsolidated sediment
Enumerated_Domain_Value_Definition_Source: FWC

Attribute:

Attribute_Label: Habitat area (km^2)
Attribute_Definition: Habitat area, in kilometers squared.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.0437
Range_Domain_Maximum: 33.5821
Attribute_Units_of_Measure: km^2

Attribute:

Attribute_Label: Net erosion lower limit (10^6 m^3)
Attribute_Definition:

Net erosion minimum volume per habitat, in millions of cubic meters.

Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0
Range_Domain_Maximum: 0.0090
Attribute_Units_of_Measure: 10^6 m^3

Attribute:

Attribute_Label: Net erosion upper limit (10^6 m^3)
Attribute_Definition:

Net erosion maximum volume per habitat, in millions of cubic meters.

Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0
Range_Domain_Maximum: 0.0452
Attribute_Units_of_Measure: 10^6 m^3

Attribute:

Attribute_Label: Net accretion lower limit (10^6 m^3)
Attribute_Definition:

Net accretion minimum volume per habitat, in millions of cubic meters.

Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.0031
Range_Domain_Maximum: 3.9777
Attribute_Units_of_Measure: 10^6 m^3

Attribute:

Attribute_Label: Net accretion upper limit (10^6 m^3)
Attribute_Definition:

Net accretion maximum value per habitat, in millions of cubic meters.

Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.0113
Range_Domain_Maximum: 10.7877
Attribute_Units_of_Measure: 10^6 m^3

Attribute:

Attribute_Label: Net volume change lower limit (10^6 m^3 study area^-1)
Attribute_Definition:

Net volume change lower limit per habitat, in millions of cubic meters per study area.

Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.0031
Range_Domain_Maximum: 3.9687
Attribute_Units_of_Measure: 10^6 m^3 study area^-1

Attribute:

Attribute_Label: Net volume change upper limit (10^6 m^3 study area^-1)
Attribute_Definition:

Net volume change upper limit per habitat, in millions of cubic meters per study area.

Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.0112
Range_Domain_Maximum: 10.7425
Attribute_Units_of_Measure: 10^6 m^3 study area^-1

Attribute:

Attribute_Label: Area normalized volume change lower limit (10^6 m^3 km^-2)
Attribute_Definition:

Area normalized volume change lower limit per habitat, in millions of cubic meters per kilometer squared.

Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.0709
Range_Domain_Maximum: 0.4080
Attribute_Units_of_Measure: 10^6 m^3 km^-2

Attribute:

Attribute_Label: Area normalized volume change upper limit (10^6 m^3 km^-2)
Attribute_Definition:

Area normalized volume change upper limit per habitat, in millions of cubic meters per kilometer squared.

Attribute_Definition_Source: USGS
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.2563
Range_Domain_Maximum: 0.6151
Attribute_Units_of_Measure: 10^6 m^3 km^-2

Distribution_Information:

Distributor:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Kimberly K. Yates
Contact_Organization: Southeast Region: ST. PETE COASTAL & MARINE SCIENCE CENTER

Contact_Position: Research Oceanographer
Contact_Address:

Address_Type: mailing and physical
Address: 600 4Th Street South
City: St. Petersburg
State_or_Province: FL
Postal_Code: 33701
Country: United States

Contact_Voice_Telephone: 727-502-8059
Contact_Electronic_Mail_Address: kyates@usgs.gov

Distribution_Liability:

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.

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Name: SHP, CSV, TIFF
Format_Version_Number: ArcGIS 10.6, RFC 4180
Format_Specification:

Esri point shapefile, comma-separated values, tagged image file format

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

https://coastal.er.usgs.gov/data-release/doi-P9JI465S/data/2016_CrockerReef_Lidar_Clip.zip

Network_Resource_Name: