Low-altitude aerial imagery collected from a Helikite at 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:
Low-altitude aerial imagery collected from a Helikite at Marconi Beach, Wellfleet, MA on March 22, 2023
Edition: 1.0
Geospatial_Data_Presentation_Form: imagery and tabular digital 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:
These RGB 3-band images were collected of the waterline, beach, and bluffs with sufficient overlap to produce structure-from-motion photogrammetry products. Each image has position information to speed up alignment in the photogrammetry processing.
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: -69.96456691
East_Bounding_Coordinate: -69.96192963
North_Bounding_Coordinate: 41.89578879
South_Bounding_Coordinate: 41.89097871
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: 3-band imagery
Theme_Keyword: shoreline photographs
Theme_Keyword: JPG
Theme_Keyword: low-altitude aerial imagery
Theme_Keyword: aerial imagery
Theme_Keyword: UAS
Theme_Keyword: Helikite
Theme_Keyword: geotagged photos
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: photography
Theme_Keyword: image collections
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:648b74f4d34ef77fcafe694e
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 RBG 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 camera (Sony a6000) used on the Helikite acquired 24-megapixel photos, with file sizes generally between 1 and 3 MB on disc, depending on image complexity. Some images were blurry due to movement and changing low light conditions.
Logical_Consistency_Report:
One flight was flown at a target elevation of 40-60 m to map the Marconi Beach shoreline and bluff face in Wellfleet, MA, on March 22, 2023.
Completeness_Report:
Photographs were captured every 5 seconds for a total of 1,346 images, but only 1,077 are provided; images taken while the Helikite was launched and put away were removed. All photos included have location information. Due to tide and wind conditions the lower beach was not captured and the total area surveyed is smaller than previous surveys (see Cross References).
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Though the images do not represent spatial data, the spatial information is embedded in the photo and available in the EXIF header of each image, which is derived from the provided Helikite navigation file (2023012FA_Marconi_f01_photoLocations.csv) in the larger work citation. 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 horizontal accuracy of 2-10 cm.
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report:
Though the images do not represent spatial data, the spatial information is available in the EXIF header of each image, which is derived from the provided Helikite navigation file (2023012FA_Marconi_f01_photoLocations.csv) in the larger work citation. 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 5-10 cm.
Lineage:
Process_Step:
Process_Description:
These JPEG images were collected with a camera (Sony a6000) wired to the GNSS receiver 15 cm vertically offset from the focal point and duct taped together, then hung from the Helikite (2023-012-FA_Marconi_imagery_browse.JPG) so that the camera faced downward. The Helikite was on a 60 m string and kitesurfing harness; together the Helikite and gear were walked up and down the beach to achieve overlapping images. The horizontal positions and elevations of each image (2023012FA_Marconi_f01_photoLocations.csv) were recorded from the GNSS receiver (EMLID Reach M2) and processed in PPK mode and processed using a base station set-up in the parking lot. It is recommended when using the imagery for photogrammetric purposes to also use the ground control point locations (see 2023012FA_Marconi_nav_GCPs.csv).
Process_Date: 202303
Process_Step:
Process_Description:
The GNSS navigation data was processed in Emlid Studio (v 1.4) using the drone data processing workflow. The positions were processed in the NAD83(2011) datum, which provided the latitude, longitude, and ellipsoid attributes. Then Geoid 18 was applied using NAVD88 as the vertical datum and UTM Zone 19N for the horizontal coordinate reference system to produce the northing, easting, and altitude attributes. The GPS offset was not accounted for in this step so the offset should be accounted for when deriving further products. All of the attributes here are provided in the 2023012FA_Marconi_f01_photoLocations.csv but only the latitude, longitude, and altitude (NAVD88) were embedded in the image header using Emlid Studio.
Process_Date: 202304
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Peter Traykovski
Contact_Organization: Woods Hole Oceanographic Institution
Contact_Position: Associate Scientist
Contact_Address:
Address_Type: mailing and physical address
Address: 226 Woods Hole Rd, MS #12
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543
Contact_Voice_Telephone: 508-289-2638
Contact_Electronic_Mail_Address: ptraykovski@whoi.edu
Process_Step:
Process_Description:
The images acquired with the camera were geotagged and processed to add additional information required by the USGS to the EXIF headers using ExifTools (https://exiftool.org/, version: 12.06), and the files were renamed to a unique identifier using Namexif (http://www.digicamsoft.com/softnamexif.html, version 2.1) to avoid any possibility of duplicate names. These steps are described here. For more information on the EXIF tags here and automatically populated by the camera see https://exiftool.org/TagNames/EXIF.html
1. Using the GNSS navigation from the previous step, ExifTools was used to tag each photo with the following tags: Credit, Copyright, UsageTerms, ImageDescription, Artist, GPSAreaInfo, GPSMapDatum, GPSLatitude, GPSLongitude, and GPSAltitude stored in a CSV file with the command:' -exiftool -csv="C:\directory\name\Geotags_EXIF.csv" C:\directory\name\of\photos *.jpg
The first row of the CSV are the tag names; the first column is SourceName (unique image names). Keywords were added with the following command in the directory with all the photographs: exiftool -keywords="aerial imagery" -keywords="Marconi Beach, Cape Cod National Seashore" -keywords="Massachusetts" -keywords="2023-012-FA" -keywords="USGS" -keywords="SONY a6000" -overwrite_original *.jpg
To read out the photo information to a CSV when in the directory with the photos the command is: exiftool -csv *.JPG > directory/name/allheaders_out.csv
2. All the JPEG images were renamed with Namexif (https://us.digicamsoft.com/softnamexif.html v 2.2 accessed April 2020) to ensure unique filenames and compliance with the USGS Coastal and Marine Hazards and Resources Program's best practices for image naming convention. Images were renamed with the field survey ID prefix; flight number, and ID that distinguishes USGS cameras by make/camera number, the image acquisition date, coordinated universal time (UTC) in ISO8601 format, and a suffix with the original image name. For example, image name '2023012FA_f01s6000_20230322T155822Z_image####.jpg', 2023012FA is the survey ID, f01 is the flight number, s6000 is the camera make (SONY) and model (6000), and 20230322 is the UTC date in the format YYYYMMDD. A 'T' is used to separate UTC date from UTC time in format HHMMSS followed by a Z, and image####.jpg is the original raw photo name appended to the end of the new filename. Because the camera time was collected in EST the time in Namexif was shifted +4:00:00 to be in UTC.
Process_Date: 202305
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: 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: jover@usgs.gov
Process_Step:
Process_Description:
Updated the transfer size of the images to reflect gigabytes. (20231107).
Process_Date: 20231107
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: VeeAnn A. Cross
Contact_Position: Marine Geologist
Contact_Address:
Address_Type: Mailing and Physical
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Contact_Voice_Telephone: 508-548-8700 x2251
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: vatnipp@usgs.gov
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Geographic:
Latitude_Resolution: 0.00000001
Longitude_Resolution: 0.00000001
Geographic_Coordinate_Units: Decimal degrees
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:
2023012FA_Marconi_f01_photoLocations.csv contains 1,077 data records.
Entity_Type_Definition:
The CSV file contains the post-processed Helikite navigation GNSS data (approximate position of the camera at the moment of each image capture).
Entity_Type_Definition_Source: USGS
Attribute:
Attribute_Label: ImageName
Attribute_Definition:
File names of individual images, see the Data_Quality_Information and Process_Description for file naming convention.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Unrepresentable_Domain: Character string.
Attribute:
Attribute_Label: Date
Attribute_Definition: Date photos were collected in YYYYMMDD
Attribute_Definition_Source: Processor defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 20230322
Range_Domain_Maximum: 20230322
Attribute_Units_of_Measure: YYYYMMDD
Attribute:
Attribute_Label: Time_UTC
Attribute_Definition:
Time in HH:MM:SS of the camera position based on the GPS in coordinated universal time (UTC).
Attribute_Definition_Source: Processor defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 14:12:11
Range_Domain_Maximum: 15:17:04
Attribute_Units_of_Measure: HH:MM:SS UTC
Attribute:
Attribute_Label: Latitude NAD83[2011]
Attribute_Definition:
Post-processed interpolated latitude of kite GNSS antenna position based on time of each image capture, in decimal degrees (NAD83[2011]).
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 41.89097871
Range_Domain_Maximum: 41.89591805
Attribute_Units_of_Measure: decimal degrees
Attribute:
Attribute_Label: Longitude NAD83[2011]
Attribute_Definition:
Post-processed interpolated longitude of kite GNSS antenna position based on time of each image capture, in decimal degrees (NAD83[2011]).
Attribute_Definition_Source: None
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -69.96456691
Range_Domain_Maximum: -69.96227779
Attribute_Units_of_Measure: decimal degrees
Attribute:
Attribute_Label: Ellipsoid NAD83[2011]
Attribute_Definition:
Post-processed height in meters of kite GNSS antenna position based on time of each image capture based on the NAD83(2011) reference ellipsoid.
Attribute_Definition_Source: None
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -6.620
Range_Domain_Maximum: 13.957
Attribute_Units_of_Measure: meters
Attribute:
Attribute_Label: Northing 19N
Attribute_Definition:
Post-processed X-coordinate of kite GNSS antenna position based on time of each image capture, in NAD83(2011)/UTM Zone 19N.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 4638119.896
Range_Domain_Maximum: 4638669.887
Attribute_Units_of_Measure: meters
Attribute:
Attribute_Label: Easting 19N
Attribute_Definition:
Post-processed Y-coordinate of kite GNSS antenna position based on time of each image capture, in NAD83(2011)/UTM Zone 19N.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 419986.334
Range_Domain_Maximum: 420170.441
Attribute_Units_of_Measure: meters
Attribute:
Attribute_Label: Orthometric NAVD88
Attribute_Definition:
Post-processed Z-coordinate of kite GNSS antenna position based on time of each image using NAVD88 correction with Geoid 18.
Attribute_Definition_Source: USGS
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 21.179
Range_Domain_Maximum: 41.753
Attribute_Units_of_Measure: meters
Overview_Description:
Entity_and_Attribute_Overview:
The attributes Latitude, Longitude, and Altitude_NAVD88_m were included in the image headers as GPSLatitude, GPSLongitude, and GPSAltitude, respectively. A GPSMapDatum header was also included in the images specifying that the latitude and longitude are in NAD83(2011) and altitude is in NAVD88 Geoid12B. Positions were derived from an Emlid Reach PPK GNSS receiver.
Entity_and_Attribute_Detail_Citation: USGS Field Activity 2023-012-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:
The Windows 10 zip file 2023012FA_Marconi_f01.zip contains 1,077 JPEG images and 2022014FA_Marconi_photolocations.csv contains the PPK GNSS navigation data.
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: JPEG
Format_Version_Number: 1.0.0
Format_Specification: JPEG
Format_Information_Content: The 2023012FA_Marconi_f01.zip file contains 1,077 JPEGs
File_Decompression_Technique: Use WinZip, 7zip, Peazip or pkUnzip
Transfer_Size: 2580
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information: Access_Instructions:
The first link in the list above is to the child page, the second is to directly download all the data on the page, and the third link is the doi to the main publication. Note that the imagery zip file is over 2 GB so if the second link is not currently supported, use the first link to choose files to download.
Digital_Form:
Digital_Transfer_Information:
Format_Name: CSV
Format_Version_Number: Exported from Excel Office 365 16.01
Format_Information_Content:
The CSV file 2023012FA_Marconi_f01_photoLocations.csv contains photo location information.
Transfer_Size: 0.03
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information: Access_Instructions:
The first link in the list above is to the child page where files can be downloaded individually, the second link is to directly download all the data on the page, and the third link is the doi to the main publication. Note that the imagery zip file is over 2 GB so if the second link is not currently supported, use the first link to choose files to download.
Fees: none
Technical_Prerequisites:
Use of these files requires software capable of opening JPG images and, if desired, capable of reading the associated EXIF information. Additionally, the location information is provided in a CSV file for the user to utilize with appropriate software.
Metadata_Reference_Information:
Metadata_Date: 20231107
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

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