Evan T. Dailey Daniel J. Nowacki Jin-Si R. Over Jennifer A. Brown Christopher R. Sherwood Margaret L. Palmsten Mark L. Buckley Justin J. Birchler 20260626 1.0 application/service data service DOI:10.5066/P9M3NYWI Pacific Coastal and Marine Science Center, Santa Cruz, California U.S. Geological Survey https://doi.org/10.5066/P9M3NYWI Andrew C. Ritchie Peter J. Triezenberg Jonathan A. Warrick Gerald A. Hatcher Daniel D. Buscombe 20230221 1.0 application/service data service DOI:10.5066/P9M3NYWI Santa Cruz, California U.S. Geological Survey - Pacific Coastal and Marine Science Center This is an ongoing collection of coastal imagery and ancillary data collected by stationary cameras installed at coastal locations around the United States and territories. Known as “CoastCam,” each station collects imagery at fixed intervals and creates derivative products from the imagery. Camera sensors may be visible (RGB) or infrared (IR). The image products include snapshots (“snap”), time-exposure averages (“timex”), pixel intensity standard deviations (“variance”), brightest pixel composites (“bright”), and darkest pixel composites (“dark”). Each camera’s lens distortion characteristics and focal parameters have been measured and are distributed here as intrinsic calibration parameters (“IO” files). Each camera’s extrinsic geometries have been determined using ground control points (GCPs) surveyed in the field of view of each camera (“EO” files). These calibration parameters can be used to georectify images. Each CoastCam station in this data service is organized with a folder for image products (“imagery”) and calibration and geometry data (“calibration”). Images are synced to this data service approximately once daily when stations are operational, and calibration data are added if new surveys are completed. These data are provided in an effort to monitor coastal conditions in near real-time and support research by the USGS and its partners into a variety of coastal processes and hazards, including wave runup, water levels, changes in beach topography and nearshore bathymetry, alongshore currents, rip channel formation, and sea ice dynamics. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. 20170506 Present ground condition Planned As needed -180 180 90 -90 USGS Metadata Identifier USGS:9fa2fd80-86e9-4a6a-a6ed-3d9f210bc7e4 None U.S. Geological Survey USGS Coastal and Marine Hazards and Resources Program CMHRP Pacific Coastal and Marine Science Center PCMSC Woods Hole Coastal and Marine Science Center WHCMSC St. Petersburg Coastal and Marine Science Center SPCMSC CoastCam Remote Sensing Coastal Change USGS Thesaurus image analysis field methods video monitoring optical methods ecosystem monitoring photography remote sensing image collections geomorphology GPS measurement ocean sciences coastal processes camera calibration ISO 19115 Topic Category geoscientificInformation elevation oceans None United States of America United States and Territories No access constraints USGS-authored or produced data and information are in the public domain from the U.S. Government and are freely redistributable with proper metadata and source attribution. These data are marked with a Creative Commons CC0 1.0 Universal License. Please recognize and acknowledge the U.S. Geological Survey as the originator(s) of the dataset and in products derived from these data. U.S. Geological Survey, Pacific Coastal and Marine Science Center PCMSC Science Data Coordinator mailing and physical

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Santa Cruz CA 95062 831-427 -4747 pcmsc_data@usgs.gov See metadata files for individual stations for imagery and geometry accuracy reports. Camera stations generally collect imagery on a daily basis, often only during daylight hours, but stations may temporarily fail to collect imagery due to reasons such as loss of power, equipment malfunction, or system maintenance. Data are considered complete for the information presented, as described in the abstract. Users are advised to read the metadata record carefully for additional details, and to examine EXIF data for individual images if required. Ground control points for the EO calibration are generally taken with GNSS survey equipment; points typically have a 5 cm or better horizontal accuracy. Ground control points for the EO calibration are generally taken with GPS survey equipment; points typically have a 10 cm or better vertical accuracy. Individual cameras for each station undergo calibration to determine intrinsic geometry parameters by collecting images of a black and white checkered board at different distances and positions. See station-specific calibration metadata for dates and additional details. Not complete intrinsic calibration data Cameras are installed at locations (see station specific metadata for details). Initial external calibration testing is performed to determine extrinsic geometry parameters by collecting images from the cameras with ground control point (GCP) targets in their field of views. GCP target locations are surveyed. GCP coordinates and intrinsic calibration data are used to generate extrinsic parameters of the images. See station-specific imagery metadata for dates and additional details. Not complete initial extrinsic calibration data Cameras collect imagery at various intervals (for example, 30 or 60 minutes). At each interval, images are collected at various rates and durations (for example, 10 minutes at 2 Hz or 45 minutes at 1 Hz). This imagery is used to generate snapshots (“snap”), time-exposure averages (“timex”), pixel intensity standard deviations (“variance”), brightest pixel composites (“bright”), and darkest pixel composites (“dark”). Image products are typically synced to a cloud storage bucket daily. Not complete imagery data collection Following imagery data collection, images are synced from the cloud storage bucket to the data service. Once on the data service server, images are renamed to follow the pattern: epochtime.dow.mon.dd_HH_MM_SS.GMT.YYYY.station.c#.type.ext where “epochtime” is the 10-digit epoch timestamp when the image was created, “dow” day of the week, “mon” is month, “dd” is two-digit date, “HH_MM_SS” is two-digit hours, minutes, and seconds, “GMT” is Greenwich Mean Time, “YYYY” is four-digit year, “station” is the name of the CoastCam station, “c#” is the camera number, “type” is image product type, and “ext” is the file extension. Image file header information is added to each file with metadata (see station-specific imagery metadata for details). Image files are then copied to a directory under their CoastCam station, camera number, year, and date code, with date code as doy_Mon.dd, where “doy” is sequential day of the year, “Mon” is 3-character abbreviated month, and “dd” is day of the month. Images are then publicly available through the data service. Not complete imagery publication Additional extrinsic calibration may be performed to account for changes at the station, for example, land subsidence, camera maintenance that results in moving the cameras, or other reasons. See station-specific calibration metadata and data for details and dates of calibrations. Not complete This metadata record describes characteristics of coastal imagery collected by CoastCam stations and calibration data used with the image products. U.S. Geological Survey U.S. Geological Survey - CMGDS mailing and physical

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Santa Cruz CA 95060 831-427-4747 pcmsc_data@usgs.gov Downloadable imagery data are available in subfolders. Each JPEG file corresponds to a single 3-band 24-bit RGB image with EXIF data locating the image in space and time and describing acquisition parameters including but not limited to camera model, camera settings, lens information, image conversion parameters, and environmental conditions. Imagery may also be in other formats, including TIFF or PNG. Derivatives and ancillary products may be contained in additional subfolders. 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 on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. 20260625 U.S. Geological Survey, Pacific Coastal and Marine Science Center PCMSC Science Data Coordinator mailing and physical

2885 Mission Street

Santa Cruz CA 95060 831-427-4747 pcmsc_data@usgs.gov Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998