U.S. Geological Survey 2019 1.0 remote-sensing image data release DOI:10.5066/P9CJOMBM Woods Hole Coastal and Marine Science Center, Woods Hole, MA U.S. Geological Survey, Coastal/Marine Hazards and Resources Program https://doi.org/10.5066/P9CJOMBM https://www.sciencebase.gov/catalog/item/5d039640e4b0e3d311567fff E. Montgomery C. Sherwood P. Traykovski B. Irwin J. Borden M. Martini S. Miner 2019 digital files data release DOI:10.5066/P9CJOMBM Reston, VA U.S. Geological Survey Montgomery E.T., Sherwood, C.R., Traykovski, P.A., Irwin, B.J., Borden, J., Martini, M.A., and Miner, S., 2019, Geotagged low-altitude aerial imagery from unmanned aerial systems flights over Town Neck Beach, in Sandwich, Massachusetts, with associated ground control points, and transects collected by the U.S. Geological Survey on January 22, January 25, February 11, March 30, and September 21, 2016: U.S. Geological Survey data release, https://doi.org//10.5066/P9CJOMBM. https://doi.org/10.5066/P9CJOMBM https://www.sciencebase.gov/catalog/item/5cf12e89e4b056af3664e718 Low-altitude (30-120 meters above ground level) digital images of Town Neck Beach in Sandwich, Massachusetts, were obtained with a series of cameras mounted on small unmanned aerial systems (UAS, also known as a drone). Imagery was collected at close to low tide on five days to observe changes in beach and dune morphology. The images were geolocated by using the single-frequency geographic positioning system aboard the UAS. Ground control points (GCPs) were established by using temporary targets on the ground, which were located by using a real-time kinematic global navigation satellite system (RTK-GNSS) base station and rovers. The GCPs can be used as constraints during photogrammetric processing. Transect points were collected by using the same RTK-GNSS system; these can be used to evaluate photogrammetric products. This data release includes georeferenced images, image-location files, GCPs, and transect points. Collection of these data was supported by the U.S. Geological Survey Coastal/Marine Hazards and Resources Program and conducted under U.S. Geological Survey field activity numbers 2016-013-FA, 2016-043-FA, 2016-053-FA, 2016-054-FA and 2016-055-FA. This dataset consists of overlapping aerial images obtained on September 21, 2016 that can be used with photogrammetric processing software to create point clouds, digital elevation models, and orthophoto mosaics. For more information about this field activity, see https://cmgds.marine.usgs.gov/fan_info.php?fan=2016-043-FA. Drone mapping was conducted at Town Neck Beach in Sandwich, Massachusetts between 2015 and October 2017. The digital images, ground control points and transect data from a calendar year are released together. This product contains the data collected in 2016. 20160921 ground condition Complete Not planned -70.4886 -70.4736 41.7712 41.761 USGS Metadata Identifier USGS:5d039640e4b0e3d311567fff None U.S. Geological Survey USGS Coastal/Marine Hazards and Resources Program CMGP Coastal and Marine Geology Program Woods Hole Coastal and Marine Science Center WHCMSC shoreline Airshark Sony Nex5R shoreline photographs photographs photos JPEG low-altitude aerial imagery aerial imagery UAS Unmanned aerial system geotagged photos field activity number 2016-043-FA Marine Realms Information Bank (MRIB) keywords aerial and satellite photography USGS Thesaurus remote sensing aerial photography image collections ISO 19115 Topic Category geoscientificInformation oceans location elevation None USA Sandwich Massachusetts Town Neck Beach None 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. Christopher Sherwood U.S. Geological Survey mailing and physical address

U.S. Geological Survey

Woods Hole MA 02543-1598 508-548-8700 x2269 csherwood@usgs.gov The images were acquired with a Sony NEX-5R camera. The images are 4912 x 3264 Pixels (16 megapixels), with file sizes generally between 6.5 and 13 MB on disc, depending on image complexity. Time stamps and GPS locations were recorded in the EXIF portion of the images. The GPS used on the UAS has practical accuracies of 3 meters horizontally and 10 m vertically, and the time stamps are accurate to better than 1 millisecond. All flights lasted the duration of the UAS battery life (maximum 15 minutes) or until the flight was completed or aborted. The cameras were set to record images at pre-determined spacing to provide 65 to 70% along-track overlap. Photographs were renamed to include survey ID, Camera ID, flight ID, date and time, and original filename to ensure no duplicated filenames. ​ UAS flights were conducted by Airshark LLC to map the Town Neck Beach shoreline in Sandwich, MA on September 21, 2016. During the four flights, photographs were captured every 4 seconds. Gaps in sequential photos may exist because some photos were deleted because, for example, of overexposure, or to avoid multiple photos of the landing pad as the UAS was taking off and landing. Horizontal positions recorded by the UAS GPS were written written into the EXIF portion of the images when they were geotagged. The GPS on the UAS provided horizontal locations are considered accurate to approximately 3 meters. Vertical positions recorded by the UAS GPS were written into the EXIF portion of the images when they were geotagged. The GPS on the UAS provided vertical locations are considered accurate to approximately 10 meters. U.S. Geological Survey Unpublished Material raster digital data https://cmgds.marine.usgs.gov/fan_info.php?fan=2016-043-FA disc 20160921 ground condition geotagged photos from field activity 2016-043-FA These JPEG images were collected by a Sony Nex5R camera mounted on a custom design AUS with six-rotors operated by Airshark LLC (https://www.airshark.io/en/company/about/). The images collected by Airshark are 4912 x 3264 Pixels (16 Megapixels), with file sizes generally between 4 and 6 MB on disc, depending on image complexity. The camera orientation for all Airshark flights was "down", aimed directly below the UAS. Horizontal positions and elevations were recorded in the UAS onboard navigation and applied to the images during the flight. These JPEG images may be used with photogrammetric software to produce geolocated point clouds, digital elevation models, orthophoto mosaics, and other products. The images collected by the Airshark UAS camera used local time and were 4 minutes off the equivalent GMT times logged by the navigation, so time adjustments were made as part of the geotagging (see first parameter of step 1 below). They were also processed to add USGS required information to the EXIF headers and renamed to unique file names. These steps are described here: 1) ExifTool (https://www.sno.phy.queensu.ca/~phil/exiftool/, version 10.75) was used to geotag the images using the UAS navigation for each of the 4 flights. The conversion of the image times to GMT and 4 minute time adjustment was also accomplished in this step using this command: exiftool –AllDates+=3:56:0 -geosync=-0:4:0 -geotag "./location.gpx" *.jpg 2) ExifTool (https://www.sno.phy.queensu.ca/~phil/exiftool/, version 10.75) was used to add required attribution tags to all the photos. The command used to update the tags was: exiftool -CopyrightNotice="Public Domain - please credit U.S. Geological Survey " -ImageDescription="Photographs of Town Neck Beach, Sandwich, Massachusetts, USA from survey 2016-043-FA " -Caption-Abstract="Town Neck Beach, Sandwich, Massachusetts, USA from survey 2016-043-FA " -Caption="Town Neck Beach, Sandwich, Massachusetts, USA from survey 2016-043-FA " -sep ", " -keywords="Town NeckBeach, Sandwich, Massachusetts, 2016-043-FA, UAS, aerial imagery, USGS " -comment="Photo from down-looking UAS camera during survey 2016-043-FA." -Credit="U.S. Geological Survey" -Contact="WHSC_data_contact@usgs.gov " -Artist="Airshark" *.JPG 3) All the JPEG images were renamed with Namexif (version 1.7, http://www.digicamsoft.com/softnamexif.html) to ensure unique filenames and compliance with USGS Coastal/Marine Hazards and Resources Program's best practices for image naming convention. Images were renamed with a survey ID prefix followed by a local USGS UID, which corresponds to a distinct UAS project; a camera ID that distinguishes among the cameras by make, model, and camera number; the image acquisition date and coordinated universal time (UTC) in ISO8601 format; and a suffix with the original image name. For example, in this image name '2016043FA_U019AS5R_20160921T130459Z_DSC08437.JPG', 2016043FA is the survey ID, U019 is the internal identifier code, AS5R is the internal camera ID for the Airshark UAS camera, 20160921 is the date in format YYYYMMDD. A 'T' is used to separate the date from UTC time in format HHMMSS followed by a 'Z', and 'DSC08437.JPG' is the original raw photo name appended to the end of the new filename. 20180405 Ellyn Montgomery U.S. Geological Survey Oceanographer mailing and physical address

U.S. Geological Survey

384 Woods Hole Rd.

Woods Hole MA 02543-1598 508-548-8700 x2356 508-457-2310 emontgomery@usgs.gov The distribution link to download the data file directly was improperly formatted and edited so the download would work. 20200612 U.S. Geological Survey VeeAnn A. Cross Marine Geologist Mailing and Physical

384 Woods Hole Road

Woods Hole MA 02543-1598 508-548-8700 x2251 508-457-2310 vatnipp@usgs.gov Added keywords section with USGS persistent identifier as theme keyword. 20200807 U.S. Geological Survey VeeAnn A. Cross Marine Geologist Mailing and Physical

384 Woods Hole Road

Woods Hole MA 02543-1598 508-548-8700 x2251 508-457-2310 vatnipp@usgs.gov 0.000001 0.000001 Decimal degrees WGS_1984 WGS_1984 6378137.0 298.257224 wGS_1984 0.01 meters Attribute values There are no additional attributes besides the tags described in data quality section associated with these images. USGS Field Activity 2016-043-FA U.S. Geological Survey - ScienceBase mailing and physical address

Denver Federal Center, Building 810, Mail Stop 302

Denver CO 80225 1-888- 275-8747 sciencebase@usgs.gov This data release includes raw data in the form of geotagged aerial images in JPEG format. The aerial images are distributed by flight in 4 zip files containing images named 2016043FA_U019_Sandwich_AS_f#.zip; 'AS' indicates Airshark obtained the images, and'f#' indicates the flight number. 2016043FA_U019_Sandwich_AS_f1.zip contains 132 images, 2016043FA_U019_Sandwich_AS_f2.zip contains 158 images, 2016043FA_U019_Sandwich_AS_f3.zip contains 152 images, 2016043FA_U019_Sandwich_AS_f4.zip contains 108 images. 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 responsibilityis assumed by the U.S. Geological Survey in the use of these data or related materials. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), and have been processed successfully on a computer system at the 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. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. JPEG 1.0.0 JPEG Zipped files contain geotagged aerial images collected by the U.S. Geological Survey - Woods Hole Coastal and Marine Science Center along Sandwich Town Neck Beach, MA. These data are contained organized by flight number. Use WinZip, 7zip, Peazip or pkUnzip 1214.5 https://www.sciencebase.gov/catalog/item/5d039640e4b0e3d311567fff https://www.sciencebase.gov/catalog/file/get/5d039640e4b0e3d311567fff?name=2016043FA_U019_sandwich_AS_f4.zip https://www.sciencebase.gov/catalog/file/get/5d039640e4b0e3d311567fff?name=2016043FA_U019_sandwich_AS_f2.zip https://www.sciencebase.gov/catalog/file/get/5d039640e4b0e3d311567fff?name=2016043FA_U019_sandwich_AS_f3.zip https://www.sciencebase.gov/catalog/file/get/5d039640e4b0e3d311567fff?name=2016043FA_U019_sandwich_AS_f4.zip https://doi.org/10.5066/P9CJOMBMX The first link is to the page containing the data. The second through fifth are direct links to download all data available from each flight segment as a zip file. The final link is to the publication landing page. The data page (first link) may have additional data access options, including web services. none Use of these files requires software capable of opening JPEG images and, if desired, capable of reading the associated EXIF information. 20220707 Ellyn Montgomery U.S. Geological Survey oceanographer mailing and physical

U.S. Geological Survey

384 Woods Hole Rd.

Woods Hole MA 02543-1598 508-548-8700 x2356 508-457-2310 whsc_data_contact@usgs.gov The metadata contact email address is a generic address in the event the metadata contact is no longer with the USGS or the email is otherwise invalid. Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998 local time None None