Justin J. Birchler Johnathan L. Woodruff Jenna A. Brown David M. Thompson 20250730 tabular digital data Jenna A. Brown Justin J. Birchler David M. Thompson Joseph W. Long Alexander C. Seymour 20180314 6.0 U.S. Geological Survey data release doi:10.5066/F7T43S94 St. Petersburg, Florida U.S. Geological Survey https://doi.org/10.5066/F7T43S94 This dataset, prepared by the U.S. Geological Survey (USGS) St. Petersburg Coastal and Marine Science Center (SPCMSC), provides beach profile data collected at Madeira Beach, Florida. Data were collected in 2024 on foot by a person equipped with a Global Positioning System (GPS) antenna affixed to a backpack outfitted for surveying location and elevation data (XYZ) along pre-determined transects. The horizontal position data are given in the Universal Transverse Mercator (UTM) projected coordinate system, Zone 17 North (17N), referenced to the North American Datum of 1983 (NAD 83); the elevation data are referenced to the North American Vertical Datum of 1988 (NAVD 88), GEOID12B. The purpose of this dataset is to provide geospatial and topographic profile data, in support of a coastal video monitoring station at Madeira Beach, Florida. Following SPCMSC data management protocols, this survey was assigned a USGS field activity number (FAN), 2024-304-FA. Additional survey and data details are available at https://cmgds.marine.usgs.gov/services/activity.php?fan=2024-304-FA. 20240201 ground condition Complete None planned -82.7996677450795 -82.7949696725917 27.7986464444971 27.7948837730467 USGS Metadata Identifier USGS:b9d1a48f-31ee-49ea-a02e-ae3fd23b3d5c ISO 19115 Topic Category geoscientificInformation elevation oceans Global Change Master Science Directory (GCMD) EARTH SCIENCE > LAND SURFACE > TOPOGRAPHY > TERRAIN ELEVATION EARTH SCIENCE > OCEANS > COASTAL PROCESSES > BEACHES PROVIDERS > GOVERNMENT AGENCIES-U.S. FEDERAL AGENCIES > DOI > USGS > DOI/USGS/CMG/SP > ST. PETERSBURG COASTAL AND MARINE SCIENCE CENTER, COASTAL AND MARINE GEOLOGY, U.S. GEOLOGICAL SURVEY, U.S. DEPARTMENT OF THE INTERIOR Data Categories for Marine Planning distributions bathymetry and elevation Marine Realms Information Bank (MRIB) Keywords beach topographic mapping altimetry Global Positioning System (GPS) observations USGS Thesaurus GPS measurement topography geology geomorphology marine geology None U.S. Geological Survey USGS St. Petersburg Coastal and Marine Science Center Coastal and Marine Hazards and Resources Program CMHRP SPCMSC elevation data Geographic Names Information System (GNIS) Gulf of America State of Florida Madeira Beach None 2024 No access constraints. Please see 'Distribution Information' for details. These data are marked with a Creative Commons CC0 1.0 Universal License. These data are in the public domain and do not have any use constraints. Users are advised to read the dataset's metadata thoroughly to understand appropriate use and data limitations. U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center Jenna A. Brown mailing and physical

600 4th Street South

Saint Petersburg FL 33701 United States 727-502-8000 jenniferbrown@usgs.gov Environment as of Metadata Creation: Microsoft Windows 11 Enterprise Version 23H2; MathWorks® MATLAB R2016a and R2023a; Ashtech™ ProFlex™ 500/800 Global Navigation Satellite System (GNSS); HYPACK® 2022; NovAtel® GrafNav (Waypoint Product Group) version 8.9. Henderson (Hehre), Rachel E. Hapke, Cheryl J. Brenner, Owen T. Reynolds, B.J. 20150430 1.1 U.S. Geological Survey Data Series doi:10.3133/ds931 Reston, Virginia U.S. Geological Survey https://doi.org/10.3133/ds931 Nelson, Timothy R. Miselis, Jennifer L. Hapke, Cheryl J. Brenner, Owen T. Henderson, Rachel E. Reynolds, Billy J. Wilson, Kathleen E. 20170324 U.S. Geological Survey Data Series doi:10.3133/ds1034 Reston, Virginia U.S. Geological Survey https://doi.org/10.3133/ds1034 Doran, Kara S. Long, Joseph W. Birchler, Justin J. Brenner, Owen T. Hardy, Matthew W. Morgan, Karen L.M. Stockdon, Hilary F. Torres, Miguel L. 20170805 6.0 U.S. Geological Survey data release doi:10.5066/F7GF0S0Z St. Petersburg, Florida U.S. Geological Survey https://doi.org/10.5066/F7GF0S0Z Stockdon, Hilary F. Doran, Kara S. Sallenger, Asbury H. 20091001 Journal of Coastal Research Volume 10053 (2009), 59-65 https://doi.org/10.2112/SI53-007.1 Blackman, Ralph B. Tukey, John W. 1959 New York Dover Publications, Inc Cross-shore profiles were quality checked for accuracy by comparing elevations where cross-shore and alongshore transects overlapped. Cross-shore profiles were quality checked for consistency by comparing elevations to previous or subsequent surveys of the same transects. A total of 31 transects (26 cross-shore, 5 alongshore) were planned for the survey, and all transects were collected. 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 carefully for additional details. The horizontal accuracy of the post-processed kinematic GPS data is +/- 2 centimeters (cm), based on the accuracy of the base station used to post-process the data; see the Data_Quality_Information and Process_Step sections for more information. The vertical accuracy of the post-processed kinematic GPS data is +/- 3 centimeters (cm), based on the accuracy of the base station used to post-process the data; see the Data_Quality_Information and Process_Step sections for more information. PLANNING Transects were created using the MathWorks® MATLAB R2016a computing environment. Cross-shore transects were planned perpendicular to the beach by utilizing a measured 2010 lidar shoreline (Doran and others, 2017) to find an average shoreline angle. The transects were generated at locations of groins (cross-shore perpendicular structures that are connected to land and extend into the ocean) and at 3 alongshore locations, equally spaced, between adjacent groins in the area of interest, by utilizing imagery from Google Earth to determine the location of the groins. This resulted in 25 cross-shore transects (lines 35 to 59) spaced approximately 23 meters (m) apart and spanning approximately 555 m in the alongshore direction. An additional cross-shore transect was planned in the middle of the study area (line 60). Five alongshore transects (lines 1 to 5), spanning the length of the study area, were cast approximately 10 m apart in the cross-shore, spanning from the dune toe to the shoreline. Transect line planning was done in a similar way to Henderson and others (2015), the difference being the software used to create the transect lines and spacing of transect lines. 20170509 U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center David M. Thompson Physical Scientist mailing and physical

600 4th Street South

Saint Petersburg FL 33701 727-502-8079 dthompson@usgs.gov ACQUISITION Transect lines were surveyed, on foot, by a person equipped with a GPS receiver and a GPS antenna affixed to a SECO© surveying backpack, which was connected to a Windows laptop PC running HYPACK® 2022 survey acquisition software. Kinematic GPS data were recorded at 5 hertz (Hz) with an Ashtech™ ProFlex™ 500/800 Global Navigation Satellite System (GNSS) receiver and an Ashtech™ GNSS geodetic survey antenna. The time associated with the beginning and end of surveying each transect line was recorded on the laptop in HYPACK® by the surveyor. These data acquisition steps are similar to those reported for the 'Wheel-Mounted GPS' system in Nelson and others (2017), the difference being the GNSS recording interval, GNSS survey equipment model, and that this survey used a backpack-mounted antenna to measure pre-defined transect lines. For this survey, 26 cross-shore transects (lines 35 to 60) and 5 alongshore transects (lines 1 to 5) were collected. 20240201 U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center Justin J. Birchler Physical Scientist mailing and physical

600 4th Street South

Saint Petersburg FL 33701 727-502-8019 jbirchler@usgs.gov GPS POST-PROCESSING Raw GPS kinematic data recorded on the surveying receiver was post-processed using GNSS post-processing software GrafNav (Waypoint Product Group) version 8.9. The kinematic GPS data recorded by the surveying receiver were processed in NAD 83 geographic coordinates to concurrent static GPS data recorded by a local base station of known position (NAD 83). The base station used was an Ashtech™ ProFlex™ 500/800 GNSS receiver and Ashtech™ GNSS geodetic survey antenna established on the roof of the USGS SPCMSC, also known as ABBY, whose position was determined as the time-weighted average of coordinate values obtained from the National Geodetic Survey's (NGS) Online Positioning User Service (OPUS, https://geodesy.noaa.gov/OPUS/). The final, differentially-corrected, precise GPS positions were exported from GrafNav in American Standard Code for Information Interchange (ASCII) text format, with projected horizontal coordinates in NAD 83, UTM Zone 17N, and vertical coordinates in NAVD 88, GEOID12B. These post-processing steps are similar to those reported in Henderson and others (2015) and Nelson and others (2017). 20240329 U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center Justin J. Birchler Physical Scientist mailing and physical

600 4th Street South

Saint Petersburg FL 33701 727-502-8019 jbirchler@usgs.gov DATA PROCESSING Beach profile horizontal position and elevation data for each individual transect were extracted from the post-processed GPS data based on the surveying times recorded with HYPACK® using the MathWorks® MATLAB R2023a computing environment. The data were smoothed in the cross-shore direction to reduce the noisiness of the data, similar to the smoothing method done by Stockdon and others (2009). The noisiness is due to the high temporal sampling frequency and the walking motion of the human surveyor. The choice of a moving 1-m wide Hanning filter (Blackman and Tukey, 1959) was sufficient to reduce noise along the profile while preserving the elevation of the profile. The data were quality-controlled in MATLAB to remove invalid data points by eliminating points with poor GPS data quality, visually inspecting plots of horizontal positions and discarding points not on the cross-shore beach profile lines (e.g., points just prior to and just after a transect), and visually inspecting plots of elevation and discarding points with erroneous GPS data (e.g., spikes in the GPS data). Lastly, the elevation data were adjusted by subtracting the elevation of the GPS antenna above the ground, when attached to the surveying backpack, during the survey (1.77 m). The final beach profile data were written to individual text files (.xyz) in tabular format, with columns representing: 1) Easting (NAD83, UTM Zone 17N), 2) Northing (NAD83, UTM Zone 17N), and 3) Orthometric Elevation (NAVD 88, GEOID12B). 20240329 U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center Justin J. Birchler Physical Scientist mailing and physical

600 4th Street South

Saint Petersburg FL 33701 727-502-8019 jbirchler@usgs.gov Point Point 20956 Universal Transverse Mercator 17 0.9996 -81.0 0.0 500000.0 0.0 coordinate pair 0.018 0.203 meters North American Datum 1983 Geodetic Reference System 80 6378137.000000 298.257222101 North American Vertical Datum 1988 0.0001 meters Attribute values 20240201_MadeiraBeachFL_XYZ.zip Processed beach profile data collected February 01, 2024, from Madeira Beach, Florida. The location and elevation data are provided in tabular format (.xyz). U.S. Geological Survey Easting UTM x-axis coordinate (NAD 83, UTM Zone 17N) U.S. Geological Survey 322707.154 323165.152 meters Northing UTM y-axis coordinate (NAD 83, UTM Zone 17N) U.S. Geological Survey 3075773.390 3076196.002 meters Elevation Orthometric elevation z-coordinate (NAVD 88) U.S. Geological Survey -0.649 2.756 meters U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center USGS SPCMSC Data Management mailing and physical

600 4th Street South

Saint Petersburg FL 33701 United States 727-502-8000 gs-g-spcmsc_data_inquiries@usgs.gov line*.xyz Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data for other purposes, nor on all computer systems, nor shall the act of distribution constitute any such warranty. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government. tab-delimited text ZIP https://coastal.er.usgs.gov/data-release/doi-F7T43S94/data/20240201_MadeiraBeachFL_XYZ.zip None 20250730 U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center USGS SPCMSC Data Management mailing and physical

600 4th Street South

Saint Petersburg FL 33701 United States 727-502-8000 gs-g-spcmsc_data_inquiries@usgs.gov Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998