Metadata: Identification_Information: Citation: Citation_Information: Originator: Jin-Si R. Over Publication_Date: 20221006 Title: Digital surface model representing Marconi Beach, Wellfleet on March 11, 2022 Edition: 1.0 Geospatial_Data_Presentation_Form: raster digital data Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/P9L1KCQB 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/P9L1KCQB Online_Linkage: https://www.sciencebase.gov/catalog/item/62deec39d34e952be9094198 Larger_Work_Citation: Citation_Information: Originator: Jin-Si R. Over Originator: Chris R. Sherwood Originator: Peter A. Traykovski Originator: Marie K. Bartlett Publication_Date: 2022 Title: Topographic and bathymetric data, structure from motion imagery, and ground control data collected at Marconi Beach, Wellfleet, MA in March 2022, U.S Geological Survey Field Activity 2022-014-FA Edition: 1.0 Geospatial_Data_Presentation_Form: digital data Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/P9L1KCQB Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Other_Citation_Details: Suggested citation: Over, J.R., Sherwood, C.R., Traykovski, P.A., and Bartlett, M.K., 2022, Topographic and bathymetric data, structure from motion imagery, and ground control data collected at Marconi Beach, Wellfleet, MA in March 2022, U.S Geological Survey Field Activity 2022-014-FA: U.S Geological Survey data release, https://doi.org/10.5066/P9L1KCQB. Online_Linkage: https://doi.org/10.5066/P9L1KCQB Online_Linkage: https://www.sciencebase.gov/catalog/item/62dee032d34e952be9094176 Description: Abstract: The data in this release map the beach and nearshore environment at Marconi Beach in Wellfleet, MA and provide updated environmental context for the 2021 CoastCam installation that looks out at the coast shared by beachgoers, shorebirds, seals, and sharks. This is related to the field activity 2022-014-FA and a collaboration with the National Park Service at Cape Cod National Seashore to monitor the region that falls within the field of view of CoastCam CACO-02, which are two video cameras aimed at the beach. In March 2022, U.S Geological Survey and Woods Hole Oceanographic Institute (WHOI) scientists conducted field surveys to map the CoastCam field of view. Elevation data were collected using a real time kinematic satellite navigation system (RTK-GNSS) receiver attached to a pole and walked on the beach. Images of the beach for use in structure from motion were taken with a camera (SONY a6000) and a post-processing kinematic (PPK) system attached to a helium filled balloon-kite (Helikite). High-precision targets (AeroPoints) and plastic tarps were used as ground control points to georeference the imagery. Bathymetry was collected in the nearshore using a single-beam echosounder mounted on a surf capable self-righting electric autonomous surface vehicle. Agisoft Metashape (v. 1.8.1) was used to create an orthomosaic and digital surface model, which was merged with the bathymetry in MatLab (v. 2020b) to create a continuous topobathy product. Purpose: A high-resolution elevation dataset of Marconi Beach to observe ground conditions and temporal change and to validate the CoastCam observations. Supplemental_Information: For more information about the WHCMSC Field Activity, see https://cmgds.marine.usgs.gov/fan_info.php?fan=2022-014-FA. Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 20220311 Currentness_Reference: ground condition; represents the state of the beach on March 11, 2022. Status: Progress: Complete Maintenance_and_Update_Frequency: Not planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -69.96472826 East_Bounding_Coordinate: -69.96178653 North_Bounding_Coordinate: 41.89585853 South_Bounding_Coordinate: 41.89076661 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: CoastCam Theme_Keyword: Helikite Theme_Keyword: Agisoft Metashape Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: remote sensing Theme_Keyword: digital elevation models Theme_Keyword: 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:62deec39d34e952be9094198 Place: Place_Keyword_Thesaurus: Common geographic areas Place_Keyword: United States Place_Keyword: Wellfleet Place_Keyword: Massachusetts Place_Keyword: Cape Cod Place: Place_Keyword_Thesaurus: Geographic Names Information System (GNIS) Place_Keyword: Marconi Beach 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/62deec39d34e952be9094198?name=2022014FA_Marconi_DSM_browse.JPG&allowOpen=true Browse_Graphic_File_Description: Elevation-colored image of topography data collected on Marconi Beach, Wellfleet MA in March 2022. Browse_Graphic_File_Type: JPEG Native_Data_Set_Environment: Agisoft Metashape v1.8.1, QGIS 3.2.2 Cross_Reference: Citation_Information: Originator: Jin-Si R. Over Originator: Chris R. Sherwood Originator: Peter A. Traykovski Originator: Eric Marsjanik Publication_Date: 2022 Title: Topographic and bathymetric data, sediment samples, structure from motion imagery, and reference mark data collected at Marconi Beach, Wellfleet in winter 2021, U.S Geological Survey Field Activity 2021-022-FA Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/P9POZ9VH Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Other_Citation_Details: This publication is the original/first survey data of Marconi Beach from 2021. Online_Linkage: https://doi.org/10.5066/P9POZ9VH 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 was used to assess overall error in the product. Logical_Consistency_Report: All data fall into expected elevation ranges compared to previous surveys (see cross reference) 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. No-data values outside of the collected data but within the bounds set to -3.4028234663852886e38 and appear transparent in geospatial software. Completeness_Report: The structure-from-motion process that builds the DSM uses all the available imagery and location information at the start, however not all images may align in the software to produce the final product. This model does have interpolated elevation data over holes. The model was clipped in QGIS to remove areas of poor interpolation near the edges of the raster. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Navigation information was acquired from a GNSS receiver (EMLID Reach M2) in PPK mode with a Multi-band GNSS antenna that has a theoretical horizontal accuracy of 2 cm. However, using these values in Metashape returned a poor product so the accuracy was loosened to 10 cm to accommodate the unknown horizontal offset of the GPS to the camera and to rely more on the ground control points, which have a theoretical accuracy of 1-2 cm. The horizontal Root Mean Square Error (RMSE) of the GCPs was xy: 0.066, 0.046 (m). The final product was compared to the previous survey at Marconi Beach (see cross-reference) and aligned at stable points. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: The location information was acquired from a GNSS receiver (EMLID Reach M2) in PPK mode with a Multi-band GNSS antenna and hot shoe adapter with an estimated vertical accuracy of 2 cm. However, using these values in Metashape returned a poor product so the accuracy was loosened to 5 cm to rely more on the ground control points, which have a theoretical accuracy of 1-2 cm. The total vertical RMSE of the GCPs was 0.016 m. The final product was compared to the previous survey at Marconi Beach (see cross-reference) and the z differences at stable points were within 10 cm. Lineage: Process_Step: Process_Description: The Digital Surface Model was created in Agisoft Metashape v. 1.8.1 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 2022014FA_Marconi_f1.zip) and positions (located in larger work citation 2022014FA_Marconi_photolocations.csv) were imported using the NAD83(2011)/UTM19N and NAVD88 datums. An 0.15 m GNSS/IPS offset in the z direction was used to represent the approximate offset of the GNSS mount and camera on the Helikite. 2. Photos were aligned at a low accuracy so that GCPs could be automatically detected in the point cloud. Twenty GCPs (2022014FA_Truro_nav_GCPs.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 to 0.02 m and accuracies for the camera positions were set to 10 cm, but the positions were only used as check points and to speed up alignment. The photos were re-aligned with high accuracy (the pixels were not subsampled to increase processing speed) using a keypoint limit of 40,000 and unlimited tie points. 3. The alignment process matched pixels between images to create point clouds and put the imagery into relative spatial context using the photo positions and GCPs. Then, the Metashape software refined and optimized the camera positions and lens model using least squares with gradual selection and optimization parameters of: Reconstruction uncertainty = 12, Projection accuracy = 4, and Reprojection error = 0.3 to minimize the distance between the measured points and the software-created points. 4. A dense point cloud was generated using the high-quality setting (images were not subsampled) and a low-frequency filtering algorithm. The dense point cloud was then edited to remove noise by filtering by point confidence before generating an interpolated digital elevation model (the software calls all models elevation models, but a surface model includes vegetation/canopy returns; a terrain model would be only bare earth returns). 4. The DSM product was exported at 25 cm in NAD83(2011)/UTM Zone 19N and NAVD88 (m). Process_Date: 202203 Process_Step: Process_Description: DSM was opened in QGIS and a shapefile was created (not included in this data release) that excluded areas of interpolation and obviously erroneous elevation points on the outer edge. The DSM was then clipped to this shapefile and turned into a cloud-optimized GeoTIFF (COG) using gdal_translate with the following command: for %i in (.\*.tif) do gdal_translate %i .\cog\%~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. Process_Date: 202207 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 Row_Count: 2252 Column_Count: 952 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: 0.25 Ordinate_Resolution: 0.25 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: 2022014FA_Marconi_DSM_25cm_cog.tif Entity_Type_Definition: A raster dataset (cloud-optimized GeoTIFF format) with encoded elevation values of Marconi Beach in Wellfleet, MA on March 11, 2022. Pixel resolution is 10 cm. Entity_Type_Definition_Source: producer defined Attribute: Attribute_Label: Value Attribute_Definition: Surface elevation orthometric height NAVD88 (m) using Geoid 2018 in NAD83(2011) UTM Zone 19N 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: gdal Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.606 Range_Domain_Maximum: 21.477 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 "2022014FA_Marconi_DSM_25cm_cog.tif", where 2022014 is the USGS Field activity ID, location is Marconi Beach, DSM is Digital Surface Model, 25cm indicates the resolution of the grid, and cog is cloud optimized GeoTIFF. Entity_and_Attribute_Detail_Citation: USGS Field Activity 2022-014-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 file 2022014FA_Marconi_DSM_25cm_cog.tif as a 32-bit floating point digital surface model (DSM). Distribution_Liability: Neither the U.S. Government, the Department of the Interior, nor the USGS, nor any of their employees, contractors, or subcontractors, make any warranty, express or implied, nor assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, nor represent that its use would not infringe on privately owned rights. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the U.S. Geological Survey in the use of these data or related materials. Any use of trade, product, or firm 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: GeoTIFF Format_Version_Number: 1.0.0 Format_Specification: 32-bit floating point GeoTIFF format Format_Information_Content: Encoded elevation surface of Marconi Beach, Wellfleet MA on March 11, 2022. Transfer_Size: 2.88 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://www.sciencebase.gov/catalog/file/get/62deec39d34e952be9094198 Network_Resource_Name: https://www.sciencebase.gov/catalog/item/62deec39d34e952be9094198 Network_Resource_Name: https://doi.org/10.5066/P9L1KCQB 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, and the third link is the doi to the main publication. Fees: None. Technical_Prerequisites: To utilize these data, the user must have an image viewer, image processing, or GIS software package capable of importing a GeoTIFF image. Free spatial data viewers or proprietary software such as ArcGIS Earth or Google Earth Pro are capable of displaying the data. See: http://www.esri.com/software/arcgis-earth, or https://www.google.com/earth/desktop/. Metadata_Reference_Information: Metadata_Date: 20221006 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