Metadata: Identification_Information: Citation: Citation_Information: Originator: Jin-Si R. Over Publication_Date: 20240530 Title: SfM digital surface model and orthomosaic representing Head of the Meadow Beach, Truro, MA on March 20, 2024 Edition: 1.0 Geospatial_Data_Presentation_Form: raster Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/P1N57AEG 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/P1N57AEG Online_Linkage: https://www.sciencebase.gov/catalog/item/6616ca4bd34e7eb9eb7d698f Larger_Work_Citation: Citation_Information: Originator: Jin-Si R. Over Originator: Chris R. Sherwood Originator: Peter A. Traykovski Publication_Date: 2024 Title: Topographic and bathymetric data, imagery, and ground control data collected at Head of the Meadow Beach, Truro, Massachusetts in February and March 2024 Edition: 1.0 Geospatial_Data_Presentation_Form: digital files Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/P1N57AEG Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Other_Citation_Details: Suggested citation: Over, J.R., Sherwood, C.R., and Traykovski, P.A., 2024, Topographic and bathymetric data, imagery, and ground control data collected at Head of the Meadow Beach, Truro, Massachusetts in February and March 2024: U.S. Geological Survey data release, https://doi.org/10.5066/P1N57AEG. Online_Linkage: https://doi.org/10.5066/P1N57AEG Online_Linkage: https://www.sciencebase.gov/catalog/item/660d7a37d34e8346125b8c32 Description: Abstract: The data in this release re-map the beach and nearshore environment at Head of the Meadow Beach in Truro, MA and provide updated environmental context for the 2020 CoastCam installation that looks out at the coast shared by beachgoers, shorebirds, seals, and sharks. This is 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-01, which are two video cameras aimed at the beach. In February and March 2024, U.S. Geological Survey and Woods Hole Oceanographic Institution (WHOI) scientists conducted field surveys to collect topographic and bathymetric data. Images of the beach for use in structure-from-motion were taken with a camera (SONY a6000) attached to a helium powered balloon-kite (Helikite). High-precision GPS targets (AeroPoints 2) were used as ground control points. 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. 2.1.0) was used to create a digital surface model and orthomosaic with the collected imagery. Purpose: High-resolution elevation and true-color dataset of Head of the Meadow Beach can be used to observe conditions and change over time and to validate the CoastCam station. Supplemental_Information: For more information about the WHCMSC Field Activity, see https://cmgds.marine.usgs.gov/fan_info.php?fan=2024-011-FA. Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 20240320 Currentness_Reference: ground condition; one day of data collection on March 20, 2024 Status: Progress: Complete Maintenance_and_Update_Frequency: Not planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -70.08055568 East_Bounding_Coordinate: -70.07548744 North_Bounding_Coordinate: 42.05326708 South_Bounding_Coordinate: 42.05002321 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: shoreline Theme_Keyword: orthomosaic Theme_Keyword: Helikite Theme_Keyword: Agisoft Metashape Theme: Theme_Keyword_Thesaurus: Marine Realms Information Bank (MRIB) keywords Theme_Keyword: aerial and satellite photography Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: remote sensing Theme_Keyword: digital elevation models Theme_Keyword: structure from motion Theme_Keyword: image mosaics Theme_Keyword: geospatial datasets Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: geoscientificInformation Theme_Keyword: oceans Theme_Keyword: location Theme_Keyword: elevation Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:6616ca4bd34e7eb9eb7d698f Place: Place_Keyword_Thesaurus: Common geographic areas Place_Keyword: United States Place_Keyword: Massachusetts Place_Keyword: Truro Place_Keyword: Cape Cod Place: Place_Keyword_Thesaurus: Geographic Names Information System (GNIS) Place_Keyword: Head of the Meadow 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/6616ca4bd34e7eb9eb7d698f?name=2024-011-FA_HOM_SfM_browse.jpg&allowOpen=true Browse_Graphic_File_Description: (left)Elevation relative to NAVD88-colored image of topography and (right) true color orthomosaic of the field site. Browse_Graphic_File_Type: JPEG Native_Data_Set_Environment: Agisoft Metashape 2.1.0 Cross_Reference: Citation_Information: Originator: Jin-Si R. Over Originator: Chris R. Sherwood Originator: Peter A. Traykovski Publication_Date: 2023 Title: Topographic and bathymetric data, structure from motion imagery, and ground control data collected at Head of the Meadow Beach, Truro, MA in February and March 2023, U.S. Geological Survey Field Activity 2023-011-FA Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/P9FYVLCD Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Other_Citation_Details: This publication is the survey data of Head of the Meadow Beach from 2023. Online_Linkage: https://doi.org/10.5066/P9FYVLCD 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, structure from motion imagery, and ground control data collected at Head of the Meadow Beach, Truro, MA in March 2022, U.S. Geological Survey Field Activity 2022-015-FA Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/P9GEVWG1 Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Other_Citation_Details: This publication is the survey data of Head of the Meadow Beach from 2022. Online_Linkage: https://doi.org/10.5066/P9GEVWG1 Cross_Reference: Citation_Information: Originator: Jin-Si R. Over Originator: Chris R. Sherwood Originator: Peter A. Traykovski Publication_Date: 2022 Title: Topographic and bathymetric data, structure from motion imagery, and ground control data collected at Head of the Meadow, Truro in February 2021, U.S Geological Survey Field Activity 2021-014-FA Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/P9D94NZ3 Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Other_Citation_Details: This publication is the survey data of Head of the Meadow Beach from 2021. Online_Linkage: https://doi.org/10.5066/P9D94NZ3 Cross_Reference: Citation_Information: Originator: Jin-Si R. Over Originator: Chris R. Sherwood Originator: Peter A. Traykovski Originator: Sandra M. Brosnahan Originator: Eric E. Marsjanik Originator: John S. Borden Publication_Date: 2021 Title: Topographic and bathymetric data, sediment samples, and beach imagery collected at Head of the Meadow, Truro in March 2020, U.S Geological Survey Field Activity 2020-015-FA Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/P9KSG1RQ Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Other_Citation_Details: This publication is the survey data of Head of the Meadow Beach from 2020. Online_Linkage: https://doi.org/10.5066/P9KSG1RQ Cross_Reference: Citation_Information: Originator: Jin-Si R. Over Originator: Andrew C. Ritchie Originator: Christine J. Kranenburg Originator: Jenna A. Brown Originator: Daniel D. Buscombe Originator: Tom Noble Originator: Christopher R. Sherwood Originator: Jonathan A. Warrick Originator: Phillipe A. 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 surface models and ortho products. Online_Linkage: https://doi.org/10.3133/ofr20211039 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: No color corrections were applied. Ground control point (GCP) error in the Metashape project is used to assess overall error in the product. Logical_Consistency_Report: The orthomosaic and digital surface model (DSM) of Head of the Meadow Beach are created from imagery and GCPs in the larger work citation. Completeness_Report: The structure-from-motion process that builds the products uses all the available imagery and location information at the start, however data holes may appear due to a lack of overlap. The DSM is also not interpolated between data holes. Users are advised to read the rest of the metadata record carefully for additional details. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: The GCPs (n=9) have a theoretical accuracy of 1-2 cm. The horizontal RMSE of the GCPs was xy: 0.028, 0.019 (m). The final products were compared to the previous survey at Head of the Meadow (see cross-reference) and the orthos and DSMs align at stable features. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: The GCPs (n=9) have a theoretical accuracy of 1-2 cm. The vertical RMSE of the GCPs was z: 0.010 (m). The final products were compared to the previous survey at Head of the Meadow (see cross-reference) and orthos and DSMs align at stable features. Lineage: Process_Step: Process_Description: DSM was created in Agisoft Metashape v. 2.1.0 using the following general steps (see Over and others, 2021): 1. Metashape project was created with imagery (located in larger work citation 2024-011-FA_HOM_f1.zip). Photos were aligned at a low accuracy and then GCPs were automatically detected in the point cloud. Nine GCPs (2024-011-FA_HOM_GCPs.csv) were located. 2. GCP horizontal and vertical accuracy was set to 0.01/0.02 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. Metashape software refined and optimized, using least squares, the camera positions, GCPs, and lens model using gradual selection and optimization parameters of: Reprojection uncertainty = 20, Projection accuracy = 5, and Reprojection error = 0.3 to minimize the distance between the measured points and the software created points (see Over and others, (2021) for a detailed discussion on these parameters). 4. A dense point cloud was generated using high-quality (images are not subsampled) and a low frequency filtering algorithm. The dense point cloud was then edited by hand to remove erroneous points before generating a DSM with interpolation disabled. 5. The DSM was then exported (2024-011-FA_HOM_DSM_UTM19N_NAVD88_10cm) from the software at a resolution of 10 cm in NAD83(2011)/UTM Zone 19N and NAVD88 (m) 6. A second DSM with interpolation enabled was created and from that surface an orthomosaic using the RGB averaged method was created. The orthomosiac was then exported ((2024-011-FA_HOM_RGBavg_UTM19N_10cm) from the software at a resolution of 10 cm in NAD83(2011)/UTM Zone 19N. Process_Date: 202403 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 Contact_Voice_Telephone: 508-548-8700 x2297 Contact_Electronic_Mail_Address: jover@usgs.gov Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Raster 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: 0.001 Ordinate_Resolution: 0.001 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: 6378137.0 Denominator_of_Flattening_Ratio: 298.257222101 Vertical_Coordinate_System_Definition: Altitude_System_Definition: Altitude_Datum_Name: North American Vertical Datum of 1988 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: 2024-011-FA_HOM_DSM_UTM19N_NAVD88_10cm.tif Entity_Type_Definition: A raster dataset with encoded elevation values of Head of the Meadow Beach in Truro, MA on March 20, 2024. Pixel resolution is 10 cm. Entity_Type_Definition_Source: USGS 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: -999 Enumerated_Domain_Value_Definition: No data Enumerated_Domain_Value_Definition_Source: Producer-defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -1.031 Range_Domain_Maximum: 27.540 Attribute_Units_of_Measure: meters Detailed_Description: Entity_Type: Entity_Type_Label: 2024-011-FA_HOM_RGBavg_UTM19N_10cm.tif Entity_Type_Definition: Pixel based raster matrix with 3 layers of information for each pixel. Entity_Type_Definition_Source: Producer defined Attribute: Attribute_Label: Band_1 Attribute_Definition: Red wavelength band Attribute_Definition_Source: Agisoft Metashape Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 17 Range_Domain_Maximum: 255 Attribute: Attribute_Label: Band_2 Attribute_Definition: Green wavelength band Attribute_Definition_Source: Agisoft Metashape Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 18 Range_Domain_Maximum: 255 Attribute: Attribute_Label: Band_3 Attribute_Definition: Blue wavelength band Attribute_Definition_Source: Agisoft Metashape Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 22 Range_Domain_Maximum: 255 Overview_Description: Entity_and_Attribute_Overview: The filenames are formatted as "2024-011-FA_HOM_product_HCRS_VCRS_resolution.tif", where 2024-011 is the USGS Field activity ID, location is Head of the Meadow (HOM), product is either DSM or RGBavg, the horizontal coordinate reference system (HCRS) is UTM19N, the vertical coordinate reference system (VCRS) is NAVD88, and resolution is 10 cm. Entity_and_Attribute_Detail_Citation: USGS Field Activity 2024-011-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 the structure-from-motion products of Head of the Meadow Beach in 2024. 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 GeoTIFF Format_Information_Content: 2024-011-FA_HOM_DSM_UTM19N_NAVD88_10cm.tif contains elevation data and 2024-011-FA_HOM_RGBavg_UTM19N_10cm.tif contains RGB data Transfer_Size: 52.553 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://www.sciencebase.gov/catalog/file/get/6616ca4bd34e7eb9eb7d698f Network_Resource_Name: https://www.sciencebase.gov/catalog/item/6616ca4bd34e7eb9eb7d698f Network_Resource_Name: https://doi.org/10.5066/P1N57AEG 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 child page, and the third link is the doi to the main publication.The transfer size includes the DSM and orthomosaic. Fees: none Technical_Prerequisites: GIS software capable of reading a GeoTIFF. Metadata_Reference_Information: Metadata_Date: 20240530 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 Metadata_Time_Convention: local time