Michael Itzkin Justin J. Birchler 20250326 tabular digital data Michael Itzkin Margaret L. Palmsten Mark L. Buckley Justin J. Birchler 20250326 U.S. Geological Survey data release doi:10.5066/P1QIZ879 St. Petersburg, Florida U.S. Geological Survey – St. Petersburg Coastal and Marine Science Center https://doi.org/10.5066/P1QIZ879 On January 25, 2023, a set of five Sentek® TriSCAN® (moisture content, salinity, and temperature) probes were placed in a cross-shore array along a dune at Madeira Beach on the Gulf Coast of Florida. The probes extended down 0.90 meters (m) below the surface (referenced to the North American Vertical Datum of 1988 [NAVD88]) and contained 9 sensors each, at depths of 5 – 85 centimeters (10 cm spacing). The sensors collected hourly observations of the volumetric moisture content, volumetric ion content (proxy for salinity), and temperature. The positions of the probes in the dune were selected upon visual inspection of the study site to capture data on the dune face, dune crest, and the back dune region. For more information about the location of the probes, please see the Moisture_Probes_Locations data and metadata files included in this data release. Following erosion of the dune from Hurricane Idalia in late August 2023, the seaward-most two probes were washed away in the storm (Probes 1 and 2) and contain hourly data up to August 25, 2023. The remaining probes (Probes 3, 4, and 5) were manually removed on August 31, 2023, and contain data up to that date. Provide data on internal dune sedimentological conditions relevant to coastal change following impacts from Hurricane Idalia at Madeira Beach, Florida. Following U.S. Geological Survey St. Petersburg Coastal and Marine Science Center (USGS SPCMSC) data management protocols, these data were assigned USGS field activity number (FAN), 2023-314-FA. Additional survey and data details are available on the Coastal and Marine Geoscience Data System (CMGDS) at https://cmgds.marine.usgs.gov/services/activity.php?fan=2023-314-FA. 20230125 20230831 ground condition Complete None planned -82.796906 -82.796869 27.796689 27.796649 USGS Metadata Identifier USGS:4a4823af-5cdf-4854-9127-f6f7971d5f30 USGS Thesaurus real-time monitoring and reporting time series datasets profiles marine geology coastal processes hazards ISO 19115 Topic Categories geoscientificInformation environment oceans None U.S. Geological Survey USGS St. Petersburg Coastal and Marine Science Center Coastal and Marine Hazards and Resources Program CMHRP SPCMSC Geographic Names Information System (GNIS) State of Florida Madeira Beach None 2023 No access constraints. Please see 'Distribution Information' for details. These data are marked with a Creative Common CC0 1.0 Universal License. These data are in the public domain and do not have any use constraints. Michael Itzkin U.S. Geological Survey – St. Petersburg Coastal and Marine Science Center Research Geologist mailing and physical

600 4th Street South

St. Petersburg FL 33701 USA 727-502-8131 mitzkin@usgs.gov Environment as of Metadata Creation: Microsoft Windows 11 Version 23H2 (Build 22631.4751); Microsoft Excel version 2402; Python version 3.7. No formal logical accuracy tests were conducted. Dataset is considered complete for the information presented, as described in the abstract. Data for Probes 1 and 2 are available up to August 25, 2023, which was the last collection time before the probes were washed away during Hurricane Idalia. Data for probes 3, 4, and 5 are available through August 31, 2023, when they were manually removed following post-Idalia surveying. There is a gap in the data for Probe 1 from March 17, 2023, at 8:00 AM to April 21, 2023, at 9:10 AM due to a dead battery. ACQUISITION and PROCESSING – Five Sentek® TriSCAN® Bluetooth probes were placed along the dune on Madeira Beach on January 25, 2023. The probes were numbered sequentially from the dune face (Probe 1) to the back dune (Probe 5) and were set to automatically collect soil moisture, salinity, and temperature data at the top of every hour during deployment (January 25, 2023, to August 30, 2023). See the Completeness Report section regarding gaps in the dataset. Data were periodically acquired and uploaded to a Sentek® IrriMAX® (https://www.irrimaxlive.com/) server for retrieval on a local machine. Data for each probe were stored in individual comma-separated values (.csv) files that were concatenated into a single .csv file using Python 3.7. Additional columns were added to the concatenated .csv file to identify the probe number and the surface elevation of the probe location. 20230831 Moisture_Probe_Data.csv Michael Itzkin U.S. Geological Survey - St. Petersburg Coastal and Marine Science Center Research Geologist mailing and physical

600 4th Street South

St. Petersburg FL 33701 US 727-502-8131 mitzkin@usgs.gov Moisture_Probe_Data.csv Comma-separated values (.csv) file of hourly moisture content, salinity, and temperature data collected from 50 to 85 cm depths in the dune at Madeira Beach, Florida from January 25, 2023, to August 30, 2023. NULL values (-1 or -1000) indicate no data was collected due to lost equipment or equipment failure. USGS Date Time Date and time of data collection, in MM/DD/YYYY HH:mm:SS AM/PM format. USGS 1/25/2023 8:57:00 AM 8/31/2023 12:00:00 AM V1 Battery voltage. USGS -1 NULL USGS 3.09 3.574 volts V2 Upload voltage. USGS -1 NULL USGS 3.047 3.616 volts A1(5) Soil moisture content at 5 cm depth. USGS -1 NULL USGS 0.0000472 65.84331 percent S1(5) Soil salinity proxy at 5 cm depth. USGS -1 NULL USGS 0.5667697 18717.56 volumetric ion content (VIC) T1(5) Soil temperature at 5 cm depth. USGS -1000 NULL USGS 9.83 52.74 degrees Celsius 0.01 A2(15) Soil moisture content at 15 cm depth. USGS -1 NULL USGS 0 63.4986 percent S2(15) Soil salinity proxy at 15 cm depth. USGS -1 NULL USGS 0.7775515 20429.67 volumetric ion content (VIC) T2(15) Soil temperature at 15 cm depth. USGS -1000 NULL USGS 12.37 41.57 degrees Celsius A3(25) Soil moisture content at 25 cm depth USGS -1 NULL USGS 0 66.55514 percent S3(25) Soil salinity proxy at 25 cm depth. USGS -1 NULL USGS 1.351072 12103.19 volumetric ion content (VIC) T3(25) Soil temperature at 25 cm depth. USGS -1000 NULL USGS 14.04 36.71 degrees Celsius A4(35) Soil moisture content at 35 cm depth. USGS -1 NULL USGS 0 60.18635 percent S4(35) Soil salinity proxy at 35 cm depth. USGS -1 NULL USGS 1.131549 12302.91 volumetric ion content (VIC) T4(35) Soil temperature at 35 cm depth. USGS -1000 NULL USGS 15.59 35.47 degrees Celsius A5(45) Soil moisture content at 45 cm depth. USGS -1 NULL USGS 0 63.01759 percent S5(45) Soil salinity proxy at 45 cm depth. USGS -1 NULL USGS 0.5739326 10441.24 volumetric ion content (VIC) T5(45) Soil temperature at 45 cm depth. USGS -1000 NULL USGS 16.52 34.35 degrees Celsius 0.01 A6(55) Soil moisture content at 55 cm depth. USGS -1 NULL USGS 0.00000307 170.0349 percent S6(55) Soil salinity proxy at 55 cm depth. USGS -1 NULL USGS 0.4374904 14556.36 volumetric ion content (VIC) T6(55) Soil temperature at 55 cm depth. USGS -1000 NULL USGS 17.11 33.65 degrees Celsius A7(65) Soil moisture content at 65 cm depth. USGS -1 NULL USGS 0.3935634 64.87124 percent S7(65) Soil salinity proxy at 65 cm depth. USGS -1 NULL USGS 0.6813428 16376.64 volumetric ion content (VIC) T7(65) Soil temperature at 65 cm depth. USGS -1000 NULL USGS 17.72 33.38 degrees Celsius A8(75) Soil moisture content at 75 cm depth. USGS -1 NULL USGS 0.1134968 66.64307 percent S8(75) Soil salinity proxy at 75 cm depth. USGS -1 NULL USGS 0.42635 10339.24 volumetric ion content (VIC) T8(75) Soil temperature at 75 cm depth. USGS -1000 NULL USGS 18.26 32.72 degrees Celsius A9(85) Soil moisture content at 85 cm depth. USGS -1 NULL USGS 0.2801375 155.8221 percent S9(85) Soil salinity proxy at 85 cm depth. USGS -1 NULL USGS 0.7347888 50000 volumetric ion content (VIC) T9(85) Soil temperature at 85 cm depth. USGS -1000 NULL USGS 18.96 32.58 degrees Celsius Probe Number Title of the numbered probe placed on a dune at Madeira Beach, Florida. The probes were numbered sequentially from the dune face (Probe 1) to the back dune (Probe 5). USGS Probe 1 TriSCAN® probe number 1. USGS Probe 2 TriSCAN® probe number 2. USGS Probe 3 TriSCAN® probe number 3. USGS Probe 4 TriSCAN® probe number 4. USGS Probe 5 TriSCAN® probe number 5. USGS Elevation Surface elevation of the probe location from the January 25, 2023, Global Positioning System (GPS) survey (NAVD88, meters). USGS 1.78 2.651 meters 0.01 U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center USGS SPCMSC Data Management mailing and physical

600 4th Street South

St. Petersburg FL 33701 United States 727-502-8000 gs-g-spcmsc_data_inquiries@usgs.gov Moisture_Probe_Data.csv 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. comma-delimited text https://coastal.er.usgs.gov/data-release/doi-P1QIZ879/data/Moisture_Probe_Data.zip None 20250324 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 Unites States 727-502-8000 gs-g-spcmsc_data_inquiries@usgs.gov Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998