Metadata: Identification_Information: Citation: Citation_Information: Originator: U.S. Geological Survey Publication_Date: 20231204 Title: Digital surface models representing Nauset Light Beach, Eastham, MA on September 14 and 20, 2023, pre and post Hurricane Lee Edition: 1.0 Geospatial_Data_Presentation_Form: raster digital data Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/P9GA5RJD Publication_Information: Publication_Place: Woods Hole Coastal and Marine Science Center, Woods Hole, MA Publisher: U.S. Geological Survey, Coastal and Marine Hazards and Resources Program Online_Linkage: https://doi.org/10.5066/P9GA5RJD Online_Linkage: https://www.sciencebase.gov/catalog/item/650dca5bd34e823a02745a6c Larger_Work_Citation: Citation_Information: Originator: Jin-Si R. Over Originator: Chris R. Sherwood Originator: Mira M. Anderberg Originator: Marie K. Bartlett Originator: Jennifer M. Cramer Publication_Date: 2023 Title: Topographic data, imagery, and ground control data collected at Head of the Meadow, Marconi, and Nauset Light beaches, Cape Cod National Seashore, Massachusetts in September 2023, pre and post Hurricane Lee Edition: 1.0 Geospatial_Data_Presentation_Form: digital data Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/P9GA5RJD Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Other_Citation_Details: Over, J.R., Sherwood, C.R., Anderberg, M.M., Bartlett, M.K., and Cramer, J.M., 2023, Topographic data, imagery, and ground control data collected at Head of the Meadow, Marconi, and Nauset Light beaches, Cape Cod National Seashore, Massachusetts in September 2023, pre and post Hurricane Lee: U.S Geological Survey data release, https://doi.org/10.5066/P9GA5RJD. Online_Linkage: https://doi.org/10.5066/P9GA5RJD Online_Linkage: https://www.sciencebase.gov/catalog/item/650dc88ed34e823a027456da Description: Abstract: The data in this release map Marconi Beach, Head of the Meadow Beach, and Nauset Light Beach, in Cape Cod National Seashore (CACO), Massachusetts, before and after Hurricane Lee in September 2023. U.S Geological Survey personnel conducted field surveys to collect topographic data using global navigation satellite systems (GNSS) at all three beaches. In addition, at Nauset Light Beach, an uncrewed aerial system (UAS) was used to collect images with a Ricoh GRII camera for use in structure from motion photogrammetry. High-precision GNSS targets (AeroPoints) were used as ground control points (GCPs) for the UAS photogrammetry. Agisoft Metashape (v. 2.0.1) software was used to create a digital surface model and an orthomosaic from the collected imagery and GCPs. Photos were taken with smartphones for environmental context. This work was conducted under National Park Service Research Permit CACO-2020-SCI-0021. Purpose: Digital surface models (DSM) are part of an elevation dataset of Nauset Light Beach for use by the public, researchers, and others to observe ground conditions and detect change before and after Hurricane Lee. Supplemental_Information: For more information about the WHCMSC Field Activity, see https://cmgds.marine.usgs.gov/fan_info.php?fan=2023-022-FA. These data are also related to USGS field activity 2023-023-FA, which collected pressure-sensor measurements at these three beaches. Time_Period_of_Content: Time_Period_Information: Multiple_Dates/Times: Single_Date/Time: Calendar_Date: 20230914 Single_Date/Time: Calendar_Date: 20230920 Currentness_Reference: ground condition; represents the state of the beach on September 14 and 20, 2023. Status: Progress: Complete Maintenance_and_Update_Frequency: Not planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -69.95371393 East_Bounding_Coordinate: -69.95031291 North_Bounding_Coordinate: 41.86217059 South_Bounding_Coordinate: 41.85615483 Keywords: Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: U.S. Geological Survey Theme_Keyword: USGS Theme_Keyword: Coastal and Marine Hazards and Resources Program Theme_Keyword: CMHRP Theme_Keyword: Woods Hole Coastal and Marine Science Center Theme_Keyword: WHCMSC Theme_Keyword: National Park Service Theme_Keyword: Agisoft Metashape Theme_Keyword: UAS Theme_Keyword: uncrewed aerial systems Theme_Keyword: Hurricane Lee Theme_Keyword: National Park Service Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: remote sensing Theme_Keyword: digital elevation models Theme_Keyword: geospatial datasets Theme_Keyword: structure from motion Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: geoscientificInformation Theme_Keyword: elevation Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:650dca5bd34e823a02745a6c Place: Place_Keyword_Thesaurus: Common geographic areas Place_Keyword: United States Place_Keyword: Massachusetts Place_Keyword: Cape Cod Place: Place_Keyword_Thesaurus: Geographic Names Information System (GNIS) Place_Keyword: Eastham Place_Keyword: Nauset Light Beach Place_Keyword: Cape Cod National Seashore Access_Constraints: None Use_Constraints: Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey (USGS) as the source of this information. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Jin-Si R. Over Contact_Organization: U.S. Geological Survey, Woods Hole Coastal and Marine Science Center Contact_Position: Geographer Contact_Address: Address_Type: mailing and physical address Address: 384 Woods Hole Rd. City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Contact_Voice_Telephone: 508-548-8700 x2297 Contact_Electronic_Mail_Address: jover@usgs.gov Browse_Graphic: Browse_Graphic_File_Name: https://www.sciencebase.gov/catalog/file/get/650dca5bd34e823a02745a6c?name=2023022FA_HxLee_DSM_browse.JPG&allowOpen=true Browse_Graphic_File_Description: Elevation-colored image of topography data collected on Nauset Light Beach, Eastham, MA in September 2023. Browse_Graphic_File_Type: JPEG Native_Data_Set_Environment: Agisoft Metashape v.2.0.1 Cross_Reference: Citation_Information: Originator: Jin-Si R. Over Originator: Andrew C. Ritchie Originator: Christine Kranenburg Originator: Jennifer (Jenna) A. Brown Originator: Daniel D. Buscombe Originator: Tom Noble Originator: Christopher R. Sherwood Originator: Jonathan Warrick Originator: Phillipe Wernette Publication_Date: 2021 Title: Processing coastal imagery with Agisoft Metashape Professional Edition, version 1.6—Structure from motion workflow documentation Series_Information: Series_Name: Open-File Report Issue_Identification: 2021-1039 Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Other_Citation_Details: This publication includes the general methodology for processing imagery in Metashape to produce digital elevation models and ortho products. Online_Linkage: https://doi.org/10.3133/ofr20211039 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: Ground control points (GCPs) were used to constrain the products – see associated metadata for details. GCP error in the Metashape project is used to assess overall error in the product. There is high confidence that the products are accurate to or better than 5 cm. Logical_Consistency_Report: All data fall into expected elevation ranges compared to GPS transect points (see larger work citation) except for points near and offshore of the waterline, where the data returned can be noisy and may result in erroneous measurements. This is a digital surface model (DSM) and includes returns from vegetation. Completeness_Report: The structure-from-motion process that builds the DSM uses all the available imagery, however not all images may align in the software to produce the final product. This model does not interpolate elevation data over holes. The model was clipped in Agisoft Metashape to remove areas of poor interpolation near the edges of the raster. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: The AeroPoint GCPs have a theoretical horizontal accuracy of 2 cm. The horizontal RMSE of the GCPs (n=8) was xy: 0.005, 0.005 (m). Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: The AeroPoint GCPs have a theoretical vertical accuracy of 1 cm. The total vertical RMSE of the GCPs (n=8) was 0.010 m. The pre storm DSM was compared to the GPS transect points taken the day before (see larger work citation), and the RMSE of the points (n=17) compared to the DSM was 0.031 m. Lineage: Process_Step: Process_Description: Digital Surface Model was created in Agisoft Metashape v. 2.0.1 using the following general steps (see Over and others, 2021 for a more detailed methodology explanation): 1. The project was created and imagery (located in larger work citation 2023022FA_NLB_preHxLee_imagery.zip and 2023022FA_NLB_postHxLee_imagery.zip) were imported using the NAD83(2011)/UTM19N and NAVD88 datums. 2. Photos were aligned at a low accuracy so that GCPs could be automatically detected in the point cloud. Eight GCPs (2023022FA_NLB_preHxLee_AeroPoints.csv and 2023022FA_NLB_postHxLee_AeroPoints.csv located in the larger work citation) were found in the images and then added to the project in the reference systems NAD83(2011)/UTM Zone 19N and NAVD88. Accuracies for the GCPs were set 0.02 m. The photos were re-aligned with high accuracy (the pixels are not subsampled for increased processing speed) using a keypoint limit of 40,000 and unlimited tie points. 3. The alignment process matches pixels between images to create point clouds and puts the imagery into a relative spatial context using the photo positions and GCPs. Then, Metashape software refined and optimized, using least squares, the camera positions and lens model using gradual selection and optimization parameters of: Ru = 20, Pa = 5, and Re = 0.3 to minimize the reprojection error or the distance between the measured points and the software created points. 4. The pre and post Hurricane Lee point clouds were separated into individual Metashape chunks. A dense point cloud was generated using the high-quality setting (images were not subsampled) and a low frequency filtering algorithm for the pre and post images. Each dense point cloud was then hand edited to remove noise before generating digital elevation models (the software calls all models elevation models, but a surface model includes vegetation/canopy returns, a terrain model would be only bare earth returns). 5. The pre and post DSM products were exported at 5 cm in NAD83(2011)/UTM Zone 19N and NAVD88 (m). 6. The DSMs were then turned into cloud-optimized GeoTIFFs (COG) using gdal_translate with the following command: for %i in (.\*.tif) do gdal_translate %i .\%~ni_cog.tif -of COG -stats -co BLOCKSIZE=256 -co COMPRESS=DEFLATE -co PREDICTOR=YES -co NUM_THREADS=ALL_CPUS -co BIGTIFF=YES (v. 3.1.4 accessed October 20, 2020 https://gdal.org/), where i is the name of each GeoTIFF section. Process_Date: 202309 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Jin-Si R. Over Contact_Organization: U.S. Geological Survey, Woods Hole Coastal and Marine Science Center Contact_Position: Geographer Contact_Address: Address_Type: mailing and physical address Address: 384 Woods Hole Rd. City: Woods Hole State_or_Province: MA Postal_Code: 02543-1258 Contact_Voice_Telephone: 508-548-8700 x2297 Contact_Electronic_Mail_Address: jover@usgs.gov Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Raster Raster_Object_Information: Raster_Object_Type: Pixel Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 19 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.999600 Longitude_of_Central_Meridian: -69.000000 Latitude_of_Projection_Origin: 0.000000 False_Easting: 500000.000000 False_Northing: 0.000000 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: row and column Coordinate_Representation: Abscissa_Resolution: 0.05 Ordinate_Resolution: 0.05 Planar_Distance_Units: meters Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1983 (National Spatial Reference System 2011) Ellipsoid_Name: GRS_1980 Semi-major_Axis: 6378137.000000 Denominator_of_Flattening_Ratio: 298.257222101 Vertical_Coordinate_System_Definition: Altitude_System_Definition: Altitude_Datum_Name: North American Vertical Datum of 1988, geoid 18 Altitude_Resolution: 0.001 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: 2023022FA_NLB_preHxLee_DSM_UTM19N_NAVD88_5cm_cog.tif Entity_Type_Definition: A raster dataset (cloud-optimized GeoTIFF format) with encoded elevation values of Nauset Light Beach in Eastham, MA before Hurricane Lee on September 14, 2023. Pixel resolution is 5 cm. Entity_Type_Definition_Source: producer defined Attribute: Attribute_Label: Value Attribute_Definition: Surface elevation orthometric height NAVD88 (m) using Geoid 2018 Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: -3.4028234663852886e38 Enumerated_Domain_Value_Definition: No data Enumerated_Domain_Value_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.690 Range_Domain_Maximum: 25.000 Attribute_Units_of_Measure: meters Detailed_Description: Entity_Type: Entity_Type_Label: 2023022FA_NLB_postHxLee_DSM_UTM19N_NAVD88_5cm_cog.tif Entity_Type_Definition: A raster dataset (cloud-optimized GeoTIFF format) with encoded elevation values of Nauset Light Beach in Eastham, MA before Hurricane Lee on September 20, 2023. Pixel resolution is 5 cm. Entity_Type_Definition_Source: Producer defined Attribute: Attribute_Label: Value Attribute_Definition: Surface elevation orthometric height NAVD88 (m) using Geoid 2018 Attribute_Definition_Source: Producer defined Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: -3.4028234663852886e38 Enumerated_Domain_Value_Definition: No data Enumerated_Domain_Value_Definition_Source: Producer defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.500 Range_Domain_Maximum: 25.000 Attribute_Units_of_Measure: meters Overview_Description: Entity_and_Attribute_Overview: Pixels represent elevation in meters relative to North American Vertical Datum of 1988 (NAVD88). The filename is formatted as "2023022FA_NLB_preHxLee_DSM_UTM19N_NAVD88_5cm_cog.tif", where 2023022 is the USGS Field activity ID, location is Nauset Light Beach (NLB), pre or post Hurricane Lee (HxLee), DSM is Digital Surface Model, UTM19N_NAVD88 is the horizontal and vertical coordinate reference system, 5cm indicates the resolution of the grid, and cog is cloud optimized GeoTIFF. Entity_and_Attribute_Detail_Citation: USGS Field Activity 2023-022-FA Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey - ScienceBase Contact_Address: Address_Type: mailing and physical address Address: Denver Federal Center, Building 810, Mail Stop 302 City: Denver State_or_Province: CO Postal_Code: 80225 Contact_Voice_Telephone: 1-888-275-8747 Contact_Electronic_Mail_Address: sciencebase@usgs.gov Resource_Description: GeoTIFF files are 32-bit floating point cloud-optimized DSMs. Distribution_Liability: 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. 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 for other purposes, nor on all computer systems, nor shall the act of distribution constitute any such warranty. The USGS or the U.S. Government shall not be held liable for improper or incorrect use of the data described and/or contained herein. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: GeoTIFF Format_Version_Number: 1.0.0 Format_Specification: 32-bit floating point cloud-optimized GeoTIFF format Format_Information_Content: Encoded elevation surface of Nauset Light Beach, Eastham, MA before and after Hurricane Lee on September 14 and 20, 2023. Transfer_Size: 211 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://www.sciencebase.gov/catalog/file/get/650dca5bd34e823a02745a6c Network_Resource_Name: https://www.sciencebase.gov/catalog/item/650dca5bd34e823a02745a6c Network_Resource_Name: https://doi.org/10.5066/P9GA5RJD Access_Instructions: The first link in the list above is to directly download all the data on the page, the second link is to the page to individually download files, and the third link is the doi to the main publication. Fees: None. Technical_Prerequisites: GIS software capable of reading a geoTIFF, the internal organization of the file allows it to be used more efficiently in the cloud environment. Metadata_Reference_Information: Metadata_Date: 20231204 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Jin-Si R. Over Contact_Organization: U.S. Geological Survey, Woods Hole Coastal and Marine Science Center Contact_Position: Geographer Contact_Address: Address_Type: mailing and physical Address: U.S. Geological Survey Address: 384 Woods Hole Rd. City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Contact_Voice_Telephone: 508-548-8700 x2297 Contact_Electronic_Mail_Address: whsc_data_contact@usgs.gov Contact_Instructions: The metadata contact email address is a generic address in the event the person is no longer with USGS. Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998