Orthomosaic representing Marconi Beach, Wellfleet, MA on March 22, 2023

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: Jin-Si R. Over
Originator: Peter A. Traykovski
Publication_Date: 20230725
Title:
Orthomosaic representing Marconi Beach, Wellfleet, MA on March 22, 2023
Edition: 1.0
Geospatial_Data_Presentation_Form: raster data
Series_Information:
Series_Name: data release
Issue_Identification: DOI:10.5066/P99ST3LT
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/P99ST3LT
Online_Linkage: Larger_Work_Citation:
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 Marconi Beach, Wellfleet, Massachusetts in March 2023, U.S. Geological Survey Field Activity 2023-012-FA.
Edition: 1.0
Geospatial_Data_Presentation_Form: digital files
Series_Information:
Series_Name: data release
Issue_Identification: DOI:10.5066/P99ST3LT
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., 2023, Topographic and bathymetric data, structure from motion imagery, and ground control data collected at Marconi Beach, Wellfleet, Massachusetts in March 2023, U.S. Geological Survey Field Activity 2023-012-FA: U.S. Geological Survey data release, https://doi.org/10.5066/P99ST3LT.
Online_Linkage: https://doi.org/10.5066/P99ST3LT
Online_Linkage:
Description:
Abstract:
The data in this release re-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 2023, U.S. Geological Survey and Woods Hole Oceanographic Institute (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) and a post-processed kinematic (PPK) system attached to a helium powered balloon-kite (Helikite). High-precision GPS targets (AeroPoints) and numbered black and white tarps 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. 1.8.1) was used to create a digital surface model and orthomosaic with the collected imagery.
Purpose:
This orthomosaic can be used for visual inspection of beach features.
Supplemental_Information:
For more information about the WHCMSC Field Activity, see https://cmgds.marine.usgs.gov/fan_info.php?fan=2023-012-FA.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20230322
Currentness_Reference: ground condition; one day of data collection on March 22, 2023
Status:
Progress: Complete
Maintenance_and_Update_Frequency: Not planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -69.96464680
East_Bounding_Coordinate: -69.96203651
North_Bounding_Coordinate: 41.89611867
South_Bounding_Coordinate: 41.89082919
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: structure from motion
Theme_Keyword: coastal processes
Theme_Keyword: geospatial datasets
Theme_Keyword: image mosaics
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: geoscientificInformation
Theme_Keyword: oceans
Theme_Keyword: location
Theme:
Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:648b725dd34ef77fcafe693b
Place:
Place_Keyword_Thesaurus: Common geographic areas
Place_Keyword: United States
Place_Keyword: Massachusetts
Place_Keyword: Wellfleet
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: Browse_Graphic_File_Description: Real color image mosaic of the beach
Browse_Graphic_File_Type: JPEG
Native_Data_Set_Environment: Agisoft Metashape 1.8.1
Cross_Reference:
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
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:
This publication is the latest survey data of Marconi Beach from 2022.
Online_Linkage: https://doi.org/10.5066/P9L1KCQB
Cross_Reference:
Citation_Information:
Originator: Jin-Si R. Over
Originator: Chris R. Sherwood
Originator: Peter A. Traykovski
Originator: Eric E. Marsjanik
Publication_Date: 2021
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 survey data of Marconi Beach from 2021.
Online_Linkage: https://doi.org/10.5066/P9POZ9VH
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
The positional information used on the Helikite and ground control point (GCP) datasets and metadata are available in the imagery and navigational components of the larger work citation. No color corrections were applied. GCP error in the Metashape project is used to assess overall error in the product.
Logical_Consistency_Report:
There is one orthomosaic of Marconi Beach created from imagery in the larger work citation, the extent is greater than that of the digital surface model in the larger citation because it includes water and edges that do not photogrammetrically reconstruct.
Completeness_Report:
The structure-from-motion process that builds the DSM and then the orthomosaic uses all the available imagery and location information at the start, however any data holes may appear blurry due to interpolation. Users are advised to read the rest of the metadata record carefully for additional details.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Navigation information was acquired from a Global navigation satellite system (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 and unchecked as positional control points to accommodate the unknown horizontal offset of the GPS to the camera and to rely more on the GCPs, which have a global accuracy of 1-3 cm. The horizontal RMSE of the GCPs was xy: 0.021, 0.020 (m). The final product was compared to the previous survey at Marconi (see second cross-reference) and the orthomosaics align at stable features.
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report:
There are no vertical positions associated with this data product.
Lineage:
Process_Step:
Process_Description:
RGB (red blue green) averaged orthomosaic was created in Agisoft Metashape v. 1.8.1 using the following general steps (see Over and others, 2021):
1. Project was created with imagery (located in larger work citation 2023012FA_Marconi_f1.zip) and position (located in larger work citation 2023012FA_Marconi_f1_photolocations.csv) data brought in using the NAD83(2011)/UTM19N and NAVD88 datums. A 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. Photos were aligned at a low accuracy and then GCPs were automatically detected in the point cloud. Ten GCPs (2023012FA_Marconi_nav_GCPs.csv) were located.
2. GCP horizontal and vertical accuracy was set 0.02/0.05 m and accuracies for the camera positions were set to 0.10 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 = 15, Projection accuracy = 4, 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 an interpolated digital surface model (the software refers to all models as "elevation models", but a surface model includes vegetation/canopy returns whereas a terrain model would be only bare earth returns).
5. The digital surface model was used to build an RGB averaged orthomosaic, which was then exported from the software at a resolution of 10 cm and in NAD83(2011)/UTM Zone 19N (ESPG:6348).
Process_Date: 202304
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
Raster_Object_Information:
Raster_Object_Type: Pixel
Row_Count: 5850
Column_Count: 2100
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: 0.1
Ordinate_Resolution: 0.1
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
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: 2023-012-FA_Marconi_Ortho_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: 0
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: 0
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: 0
Range_Domain_Maximum: 255
Overview_Description:
Entity_and_Attribute_Overview:
The orthomosaic is a true-color orthomosaic GeoTIFF with an 8-bit unsigned sample type. There are no 'no-data' values. The filename is formatted as "2023-012-FA_Marconi_Ortho_UTM19N_10cm.tif", where 2023-012 is the USGS Field activity ID, location is Marconi (Marconi Beach location), Ortho is the product type, UTM19N is the coordinate reference system, and 10cm indicates the resolution of the grid, and cog is cloud-optimized GeoTIFF.
Entity_and_Attribute_Detail_Citation: USGS Field Activity 2023-011-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 file 2023-012-FA_Marconi_Ortho_UTM19N_10cm.tif is a true-color orthomosaic with an 8-bit unsigned sample type.
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: GeoTIFF
Format_Information_Content: True-color RGB
Transfer_Size: 14.58
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information: Access_Instructions:
The first link in the list above is to directly download the data on the page, the second link is to the child page, and the third link is the doi to the main publication.
Fees: none
Technical_Prerequisites: GIS software capable of reading a geoTIFF.
Metadata_Reference_Information:
Metadata_Date: 20230725
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

This page is <https://cmgds.marine.usgs.gov/catalog/whcmsc/SB_data_release/DR_P99ST3LT/2023012FA_Marconi_ortho_meta.html>
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