Metadata: Identification_Information: Citation: Citation_Information: Originator: Andrew C Ritchie Publication_Date: 20221011 Title: RGB-averaged orthoimagery of coastal North Carolina, from 2019-09-08 to 2019-09-13, Post-Hurricane Dorian Edition: 1.0 Geospatial_Data_Presentation_Form: raster digital data (GeoTIFF) Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/P9K3TWY7 Publication_Information: Publication_Place: Pacific Coastal and Marine Science Center, Santa Cruz, CA Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.5066/P9K3TWY7 Larger_Work_Citation: Citation_Information: Originator: Andrew C. Ritchie Originator: Jin-Si R. Over Originator: Christine J. Kranenburg Originator: Jenna A. Brown Originator: Daniel D. Buscombe Originator: Christopher R. Sherwood Originator: Jonathan A. Warrick Originator: Phillipe A. Wernette Publication_Date: 2022 Title: Aerial photogrammetry data and products of the North Carolina coast Edition: 1.0 Geospatial_Data_Presentation_Form: raster digital files Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/P9K3TWY7 Publication_Information: Publication_Place: Pacific Coastal and Marine Science Center, Santa Cruz, CA Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.5066/P9K3TWY7 Description: Abstract: RGB-averaged ortho products were created from aerial imagery collected between September 8 and 13, 2019, along the North Carolina coast between the Virginia-North Carolina border vicinity and Cape Lookout, North Carolina. These RBG-averaged orthoimages were created to document ground conditions after Hurricane Dorian, which made landfall on the North Carolina coast on September 6, 2019. The RBG-averaged orthoimages help researchers estimate the land surface after Hurricane Dorian and were created to document inter-annual changes in shoreline position and coastal morphology in response to storm events using aerial imagery collections and a structure from motion (SFM) workflow. These data can be used with geographic information systems or other software to identify topographic and shallow-water bathymetric features. Purpose: U.S. Geological (USGS) researchers use the RGB-averaged imagery to assess future coastal vulnerability, nesting habitats for wildlife, and provide data for hurricane impact models. The products span the coast over both highly developed towns and natural areas, including federal lands. This research is part of the USGS Remote Sensing Coastal Change Project. Supplemental_Information: Additional information about the field activity from which these data were derived is available online at: https://cmgds.marine.usgs.gov/fan_info.php?fan=2019-311-CNT Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. The raw imagery and navigation data used to produce the orthoimagery are available online at https://doi.org/10.5066/P9TPKMBB. Bounding coordinates for the metadata are derived from the overall extent of the ortho products and are not necessarily representative of individual product bounds which are split up along the coast to have more accessible data-download sizes. See image at https://www.sciencebase.gov/catalog/file/get/617352c1d34ea36449a8838b?name=Product_Boundary_Map.jpg for geographic locations used to create the data subsets. Time_Period_of_Content: Time_Period_Information: Multiple_Dates/Times: Single_Date/Time: Calendar_Date: 20190908 Single_Date/Time: Calendar_Date: 20190912 Single_Date/Time: Calendar_Date: 20190913 Currentness_Reference: Ground condition, data were collected on three days: September 8, 12, and 13 2019. Status: Progress: Complete Maintenance_and_Update_Frequency: Not planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -76.54594384 East_Bounding_Coordinate: -75.45521055 North_Bounding_Coordinate: 36.55505689 South_Bounding_Coordinate: 34.58525117 Keywords: Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: geoscientificInformation Theme_Keyword: oceans Theme_Keyword: imageryBaseMapsEarthCover Theme: Theme_Keyword_Thesaurus: Data Categories for Marine Planning Theme_Keyword: Bathymetry and Elevation Theme_Keyword: Physical Habitats and Geomorphology Theme: Theme_Keyword_Thesaurus: Marine Realms Information Bank (MRIB) keywords Theme_Keyword: remote sensing Theme_Keyword: fragile ecosystems Theme_Keyword: beach Theme_Keyword: barrier island Theme_Keyword: geographic information systems (GIS) Theme_Keyword: hurricanes and typhoons 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: Pacific Coastal and Marine Science Center Theme_Keyword: PCMSC Theme_Keyword: Woods Hole Coastal and Marine Science Center Theme_Keyword: WHCMSC Theme_Keyword: Saint Petersburg Coastal and Marine Science Center Theme_Keyword: SPCMSC Theme_Keyword: Remote Sensing Coastal Change Theme_Keyword: Hurricane Dorian Theme_Keyword: Outer Banks Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: structure from motion Theme_Keyword: remote sensing Theme_Keyword: aerial photography Theme_Keyword: image collections Theme_Keyword: geomorphology Theme_Keyword: geospatial datasets Theme_Keyword: earth sciences Theme_Keyword: geography Theme_Keyword: coastal processes Theme_Keyword: hurricanes Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:619c1cd7d34eb622f692fe9d Place: Place_Keyword_Thesaurus: Geographic Names Information System (GNIS) Place_Keyword: Atlantic Ocean Place_Keyword: Pamlico Sound Place_Keyword: State of North Carolina Place_Keyword: Commonwealth of Virginia Place_Keyword: Cape Lookout Place_Keyword: Cape Hatteras Place_Keyword: Duck (1025292) Place_Keyword: Oregon Inlet Place_Keyword: Hatteras Inlet Place_Keyword: Ocracoke Inlet Place_Keyword: Ophelia Inlet Place_Keyword: Beaufort Inlet Place_Keyword: Cape Lookout 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_Organization_Primary: Contact_Organization: U.S. Geological Survey, Pacific Coastal and Marine Science Center Contact_Person: PCMSC Science Data Coordinator Contact_Address: Address_Type: mailing and physical Address: 2885 Mission Street City: Santa Cruz State_or_Province: CA Postal_Code: 95060 Contact_Voice_Telephone: 831-427-4747 Contact_Electronic_Mail_Address: pcmsc_data@usgs.gov Browse_Graphic: Browse_Graphic_File_Name: https://www.sciencebase.gov/catalog/file/get/619c1cd7d34eb622f692fe9d?name=201909_RGBavg_NC_example.JPG&allowOpen=true Browse_Graphic_File_Description: Example segment of an RGB averaged orthoimage post-Dorian on 2019-09-012. Browse_Graphic_File_Type: JPEG Native_Data_Set_Environment: Microsoft Windows 10, Agisoft Metashape Professional version 1.6.5, gdal version 3.1.4. 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: Tommy Noble Originator: Christopher R. Sherwood Originator: Jonathan Warrick Originator: Phillipe 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 DEMs and ortho products. Online_Linkage: https://doi.org/10.3133/ofr20211039 Cross_Reference: Citation_Information: Originator: NOAA Office for Coastal Management (OCM Partners) Publication_Date: 2019 Title: 2018 USACE NCMP Post-Florence Topobathy Lidar DEM: Southeast Coast (VA, NC, SC) Series_Information: Series_Name: Data Series Issue_Identification: 57345 Publication_Information: Publication_Place: Charleston, SC Publisher: Office for Coastal Management Other_Citation_Details: This data set was used to qualitatively assess the horizontal accuracy of the RBG-averaged products. Online_Linkage: https://www.fisheries.noaa.gov/inport/item/57345 Cross_Reference: Citation_Information: Originator: NOAA Office for Coastal Management (OCM Partners) Publication_Date: 2019 Title: 2019 USACE NCMP DUNEX Topobathy Lidar DEM: East Coast (NC, VA) Series_Information: Series_Name: Data Series Issue_Identification: 60197 Publication_Information: Publication_Place: Charleston, SC Publisher: Office for Coastal Management Other_Citation_Details: This data set was used to qualitatively assess the horizontal accuracy of the RGB-averaged products. Online_Linkage: https://www.fisheries.noaa.gov/inport/item/60197 Cross_Reference: Citation_Information: Originator: Christopher R. Sherwood Originator: Jonathan A. Warrick Originator: Andrew D. Hill Originator: Andrew C. Ritchie Originator: Nathaniel G. Plant Publication_Date: 2018 Title: Rapid, remote assessment of Hurricane Matthew impacts using four-dimensional structure-from-motion photogrammetry Series_Information: Series_Name: Professional Paper Issue_Identification: DOI:10.2112/JCOASTRES-D-18-00016.1 Publication_Information: Publication_Place: Online Publisher: Journal of Coastal Research Other_Citation_Details: This publication includes the general methodology described for processing imagery in Metashape in four-dimensions to produce DEMs and ortho products. Online_Linkage: https://doi.org/10.2112/JCOASTRES-D-18-00016.1 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: The source imagery and positional information and metadata that were used to create these photogrammetrically derived products are available here: https://doi.org/10.5066/P9TPKMBB. Information on the horizontal and vertical accuracies of the source data can be found within the data release metadata. Horizontal accuracy of the RGB-averaged orthoimages is assessed using published ground control points (GCPs) and a qualitative assessment with published lidar datasets (OCM Partners, 2018; 2019). It should be noted that accuracy estimates of the products are for areas of bare ground or low vegetation where GCPs were placed. Additional sources of error such as poor image-to-image point matching due to vegetation or uniform substrate texture or moving objects resulting in poor surface reconstruction may cause localized errors in some portions of the orthoimages to exceed accuracy values. Processing imagery in 4D (see processing steps) aims to keep related products precise within the reported accuracies. Logical_Consistency_Report: There are a total of five orthoimagery products included in this dataset. The products may appear blurry or distorted near tall buildings, areas of poorer image overlap, and near water (waves, ponds, shorelines), where the data return is often sparse, noisy, and erroneous. No color corrections were applied to the RGB averaged ortho products. GeoTIFFs are in full-color. The blending mode of the orthoimagery uses a weighted average value of all the pixels from individual photos (https://www.agisoft.com/pdf/metashape-pro_1_6_en.pdf - see Blending mode; accessed June 2020). Completeness_Report: All collected aerial imagery was used. The orthoimagery products have not been cropped and include coverage of water. Orthoimages were created from interpolated DEMs in Metashape. GeoTIFFs are cloud-optimized. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Horizontal accuracy is affected by the source data and photogrammetry processing and difficult to quantitatively test. One ground control point (GCP 34; 0.037-meter xy accuracy) and post-processed kinematic (PPK) camera positions (Kranenburg and others, 2020; 2021a; 2021b) were used to create the final SfM products. The horizontal (x,y) error of control point GCP 34 after batch co-alignment and error reduction in the Metashape project (see processing steps) was 0.040,-0.048 m. These values do not represent the absolute horizontal georeferencing accuracy of the product but provide a better sense of the overall photogrammetry processing accuracy. Due to the nature of the in-place GCPs being difficult to distinguish in the orthoimages at their published resolution, no further horizontal accuracy assessment was done with them. A qualitative analysis of gridded first-return lidar data at stable points (OCM Partners, 2018; 2019) supports these base horizontal accuracy estimates. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: There are no vertical positions associated with this data product. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: Christine J Kranenburg Originator: Andrew C Ritchie Originator: Jenna A Brown Originator: Jin-Si R Over Originator: Daniel D Buscombe Originator: Christopher R Sherwood Originator: Jonathan A Warrick Originator: Phillipe A Wernette Publication_Date: 2021 Title: Aerial imagery of the North Carolina coast: 2019-09-08, 2019-09-12 and 2019-09-13, post-Hurricane Dorian Geospatial_Data_Presentation_Form: dataset Publication_Information: Publication_Place: St. Petersburg Coastal and Marine Science Center Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.5066/P9TPKMBB Type_of_Source_Media: Digital Source_Time_Period_of_Content: Time_Period_Information: Multiple_Dates/Times: Single_Date/Time: Calendar_Date: 20190908 Single_Date/Time: Calendar_Date: 20190912 Single_Date/Time: Calendar_Date: 20190913 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: Aerial Imagery Source_Contribution: The data in this release are used to make post-Hurricane Dorian SFM products. Source_Information: Source_Citation: Citation_Information: Originator: Christine J. Kranenburg Originator: Andrew C. Ritchie Originator: Jenna A. Brown Originator: Jin-Si R. Over Originator: Christopher R. Sherwood Originator: Jonathan A. Warrick Originator: Phillipe A. Wernette Publication_Date: 2021 Title: Aerial imagery of the North Carolina coast: 2019-08-30 and 2019-09-02, pre-Hurricane Dorian Geospatial_Data_Presentation_Form: JPEG and TXT dataset Publication_Information: Publication_Place: St. Petersburg Coastal and Marine Science Center Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.5066/P9WR0VB1 Type_of_Source_Media: Digital Source_Time_Period_of_Content: Time_Period_Information: Multiple_Dates/Times: Single_Date/Time: Calendar_Date: 20190830 Single_Date/Time: Calendar_Date: 20190902 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: Aerial Imagery 4D dataset 1 Source_Contribution: The data in this release are used in the 4D alignment Metashape SFM Batch1 process. Source_Information: Source_Citation: Citation_Information: Originator: Christine J. Kranenburg Originator: Andrew C. Ritchie Originator: Jenna A. Brown Originator: Jin-Si R. Over Originator: Daniel Buscombe Originator: Christopher R. Sherwood Originator: Jonathan A. Warrick Originator: Phillipe A. Wernette Publication_Date: 2020 Title: Post-Hurricane Florence aerial imagery: Cape Fear to Duck, North Carolina, October 6–8, 2018 Geospatial_Data_Presentation_Form: dataset Publication_Information: Publication_Place: St. Petersburg Coastal and Marine Science Center Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.5066/P91KB9SF Type_of_Source_Media: Digital Source_Time_Period_of_Content: Time_Period_Information: Multiple_Dates/Times: Single_Date/Time: Calendar_Date: 20181006 Single_Date/Time: Calendar_Date: 20181007 Single_Date/Time: Calendar_Date: 20181008 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: Aerial Imagery 4D dataset 2 Source_Contribution: The data in this release are used in the 4D alignment Metashape SFM Batch1 process. Source_Information: Source_Citation: Citation_Information: Originator: Jennifer A. Brown Originator: Christopher R. Sherwood Originator: Marinna Martini Originator: Christine J. Kranenburg Originator: Jin-Si R. Over Publication_Date: 2021 Title: Ground Control Point Data from the Outer Banks, North Carolina, post-Hurricane Dorian, September 2019 Edition: 1.0 Geospatial_Data_Presentation_Form: tabular digital data Online_Linkage: https://doi.org/10.5066/P9DVZC23 Type_of_Source_Media: Digital and/or Hardcopy Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20190924 Ending_Date: 20190925 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: Ground Control Points Source_Contribution: The Ground Control Points are used in the SFM process and to assess horizontal and vertical positional accuracy. Process_Step: Process_Description: On a workstation (AMD Threadripper 3960X /AsRock TRX40 Creator motherboard/256GB 3000MHz RAM) using Win10x64, aerial imagery and associated positional data (Kranenburg and others 2020; 2021a; 2021b) and a single ground control point (Brown and others, 2021) were brought into an Agisoft Metashape Pro (v. 1.6.5) project to align in a 4D manner (see Sherwood and others, 2019). Only one ground control point, GCP 34, was used as a control point to help 'lock' in the camera positions, whereas the rest of the points were used as independent vertical check points (that is, they were not placed in Metashape). See Kranenburg and others, 2021a, for Metashape Reference Settings inputs. The additional imagery improves the horizontal and vertical accuracy, but similar products can be reproduced without them. The following steps were performed on the Metashape project in the geographic coordinate system NAD83(2011) in ellipsoid height following the general guidance of Over and others (2021): 1. Separate camera models and camera groups were created for each flight date. Note that multiple imagery datasets are used in the overall processing effort to produce the end individual survey products that this metadata file covers. 2. Imagery (with positions) are aligned in 4D to create a point cloud using a 'High' alignment setting, keypoint limit of 70,000, tiepoint limit of 0, generic preselection selected, and reference preselection via source selected. The tiepoint accuracy was set to 1 pixel. 3. The resultant point cloud was filtered using one iteration of the 'Reconstruction uncertainty' filter at a level of 10, one iteration of the 'Projection accuracy' filter at a level of 3, and two iterations of the 'Reprojection accuracy' filer at a level of 0.3 (in the second iteration the 'fit additional corrections' option was turned on). With each filter, iteration points are selected, deleted, and then the camera model is optimized to refine the focal length, cx, cy, k1, k2, k3, p1, and p2 camera model coefficients. 4. Natural breaks in the final alignment product were identified based on bodies of water or the extreme northern and southern ends of a flight (see Product_Boundary_Map.jpg at https://doi.org/10.5066/P9K3TWY7). The breaks and dates of imagery in the 4D process are used for ease and speed of processing. The boundaries used for the post-Hurricane Dorian dataset are the Virginia-North Carolina border vicinity to Oregon Inlet, Oregon Inlet to Hatteras Inlet, Hatteras Inlet to Ocracoke Inlet, Ocracoke Inlet to Ophelia Inlet, and Ophelia Inlet to Beaufort Inlet. For each region, sub-chunks were created for each mission (one or two flight-days, usually adjacent) by iteratively copying the original 4D chunk and removing all camera groups not part of a single mission. Note that this particular metadata file only covers the post-Hurricane Dorian dataset collected from 2019-09-08 to 2019-09-13. Processing took place starting in June 2021 and into February 2022, the latest processing in YYYYMM is given in the Process Date. Source_Used_Citation_Abbreviation: Aerial Imagery Source_Used_Citation_Abbreviation: Ground Control Points Source_Used_Citation_Abbreviation: Aerial Imagery 4D dataset 1 Source_Used_Citation_Abbreviation: Aerial Imagery 4D dataset 2 Process_Date: 202107 Process_Step: Process_Description: From the previous process step, each 'chunk' is processed as follows to create the final DEM products for each flight date: 1. Targeted imagery sets in the aligned chunk are copied from the workstation to a new Agisoft Metashape Pro. project on the U.S Geological Survey Tallgrass high-performance computing network for processing on CPU and GPU nodes (https://www.usgs.gov/core-science-systems/sas/arc/machine-access). 2. If multiple flight dates were flown for this chunk, imagery from one date is targeted, and the rest are disabled (this is then switched for each flight date in the chunk after the final step and steps 3-7 are repeated). 3. A high quality dense point cloud is generated for the chunk with 'mild' filtering and the options to calculate point color and point confidence selected. 4. Dense point cloud is filtered using the 'Filter by Confidence' tool using the range 0-2, these points selected at this range are classified as low noise. 5. A DEM is built from the dense point cloud with interpolation enabled and without the points classified as low noise (interpolated DEM not included in this publication). 6. An orthophoto is built from the interpolated DEM using the blending mode 'average'. 7. The orthorectified product is exported in NAD83(2011) UTM Zone 18N with a 0.25-meter cell size and integer boundary intervals. 8. Orthorectified product is turned into a cloud-optimized GeoTIFF (COG) using gdal_translate with the following command:for %i in (.\*.tif) do gdal_translate %i .\cog\%~ni_cog.tif -of COG -stats -co BLOCKSIZE=256 -co COMPRESS=LZW -co PREDICTOR=YES -co NUM_THREADS=ALL_CPUS -co BIGTIFF=YES (v. 3.1.4 accessed October 20, 2020 https://gdal.org/). Where i is the name of each geoTIFF section. Note that this metadata covers only the post-Hurricane Dorian products even though the processing steps use multiple datasets. Process_Date: 202202 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Raster Raster_Object_Information: Raster_Object_Type: Pixel Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 18 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: 0.25 Ordinate_Resolution: 0.25 Planar_Distance_Units: meters Geodetic_Model: Horizontal_Datum_Name: NAD83_National_Spatial_Reference_System_2011 Ellipsoid_Name: Geodetic Reference System 80 Semi-major_Axis: 6378137.000000 Denominator_of_Flattening_Ratio: 298.257222 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: 20190908_RGBavg_VA_to_Oregon_Inlet_NAD83_2011_UTM18N_25cm_cog.tif Entity_Type_Definition: A raster dataset (unsigned 8-bit integer cloud-optimized GeoTIFF format) with encoded RGB values of the North Carolina coast from the Virginia-North Carolina state border to Oregon Inlet, from data on September 8, 2019. 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Attribute_Definition_Source: Agisoft Metashape Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 255 Detailed_Description: Entity_Type: Entity_Type_Label: 20190908_RGBavg_Oregon_Inlet_to_Hatteras_Inlet_NAD83_2011_UTM18N_NAVD88_1m_cog.tif Entity_Type_Definition: A raster dataset (unsigned 8-bit integer cloud-optimized GeoTIFF format) with encoded RGB values of the North Carolina coast from Oregon Inlet to Hatteras Inlet, from data on September 8, 2019. Pixel resolution is 25-cm. Pixel-based raster matrix includes 3 layers of information for each pixel and a fourth alpha, or transparency, band for encoding no-data values. 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 Attribute: Attribute_Label: Band_4 Attribute_Definition: Alpha band, where 0 is transparent, or no-data, and 255 is opaque, or has data. Attribute_Definition_Source: Agisoft Metashape Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 255 Detailed_Description: Entity_Type: Entity_Type_Label: 20190908_RGBavg_Hatteras_Inlet_to_Ocracoke_Inlet_NAD83_2011_UTM18N_25cm_cog.tif Entity_Type_Definition: A raster dataset (unsigned 8-bit integer cloud-optimized GeoTIFF format) with encoded RGB values of the North Carolina coast from Hatteras Inlet to Ocracoke Inlet, from data on September 8, 2019. Pixel resolution is 25-cm. Pixel-based raster matrix includes 3 layers of information for each pixel and a fourth alpha, or transparency, band for encoding no-data values. 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 Attribute: Attribute_Label: Band_4 Attribute_Definition: Alpha band, where 0 is transparent, or no-data, and 255 is opaque, or has data. Attribute_Definition_Source: Agisoft Metashape Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 255 Detailed_Description: Entity_Type: Entity_Type_Label: 20190908_RGBavg_Ocracoke_Inlet_to_Ophelia_Inlet_NAD83_2011_UTM18N_25cm_cog.tif Entity_Type_Definition: A raster dataset (unsigned 8-bit integer cloud-optimized GeoTIFF format) with encoded RGB values of the North Carolina coast from Ocracoke Inlet to Ophelia Inlet, from data on September 8, 2019. Pixel resolution is 25-cm. Pixel-based raster matrix includes 3 layers of information for each pixel and a fourth alpha, or transparency, band for encoding no-data values. 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 Attribute: Attribute_Label: Band_4 Attribute_Definition: Alpha band, where 0 is transparent, or no-data, and 255 is opaque, or has data. Attribute_Definition_Source: Agisoft Metashape Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 255 Detailed_Description: Entity_Type: Entity_Type_Label: 20190912_RGBavg_VA_to_Oregon_Inlet_NAD83_2011_UTM18N_25cm_cog.tif Entity_Type_Definition: A raster dataset (unsigned 8-bit integer cloud-optimized GeoTIFF format) with encoded RGB values of the North Carolina coast from the Virginia-North Carolina state border to Oregon Inlet, from data on September 12, 2019. Pixel resolution is 25-cm. Pixel-based raster matrix includes 3 layers of information for each pixel and a fourth alpha, or transparency, band for encoding no-data values. 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 Attribute: Attribute_Label: Band_4 Attribute_Definition: Alpha band, where 0 is transparent, or no-data, and 255 is opaque, or has data. Attribute_Definition_Source: Agisoft Metashape Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 255 Detailed_Description: Entity_Type: Entity_Type_Label: 20190912_RGBavg_Oregon_Inlet_to_Hatteras_Inlet_NAD83_2011_UTM18N_25cm_cog.tif Entity_Type_Definition: A raster dataset (unsigned 8-bit integer cloud-optimized GeoTIFF format) with encoded RGB values of the North Carolina coast from Oregon Inlet to Hatteras Inlet, from data on September 12, 2019. Pixel resolution is 25-cm. Pixel-based raster matrix includes 3 layers of information for each pixel and a fourth alpha, or transparency, band for encoding no-data values. 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 Attribute: Attribute_Label: Band_4 Attribute_Definition: Alpha band, where 0 is transparent, or no-data, and 255 is opaque, or has data. Attribute_Definition_Source: Agisoft Metashape Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 255 Detailed_Description: Entity_Type: Entity_Type_Label: 20190912-13_RGBavg_Hatteras_Inlet_to_Ocracoke_Inlet_NAD83_2011_UTM18N_25cm_cog.tif Entity_Type_Definition: A raster dataset (unsigned 8-bit integer cloud-optimized GeoTIFF format) with encoded RGB values of the North Carolina coast from Hatteras Inlet to Ocracoke Inlet, from data on September 12 and 13, 2019. Pixel resolution is 25-cm. Pixel-based raster matrix includes 3 layers of information for each pixel and a fourth alpha, or transparency, band for encoding no-data values. 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 Attribute: Attribute_Label: Band_4 Attribute_Definition: Alpha band, where 0 is transparent, or no-data, and 255 is opaque, or has data. Attribute_Definition_Source: Agisoft Metashape Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 255 Detailed_Description: Entity_Type: Entity_Type_Label: 20190912-13_RGBavg_Ocracoke_Inlet_to_Ophelia_Inlet_NAD83_2011_UTM18N_25cm_cog.tif Entity_Type_Definition: A raster dataset (unsigned 8-bit integer cloud-optimized GeoTIFF format) with encoded RGB values of the North Carolina coast from Ocracoke Inlet to Ophelia Inlet, from data on September 12 and 13, 2019. Pixel resolution is 25-cm. Pixel-based raster matrix includes 3 layers of information for each pixel and a fourth alpha, or transparency, band for encoding no-data values. 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 Attribute: Attribute_Label: Band_4 Attribute_Definition: Alpha band, where 0 is transparent, or no-data, and 255 is opaque, or has data. Attribute_Definition_Source: Agisoft Metashape Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 255 Detailed_Description: Entity_Type: Entity_Type_Label: 20190912-13_RGBavg_Ophelia_Inlet_to_Beaufort_Inlet_NAD83_2011_UTM18N_25cm_cog.tif Entity_Type_Definition: A raster dataset (unsigned 8-bit integer cloud-optimized GeoTIFF format) with encoded RGB values of the North Carolina coast from Ophelia Inlet to Beaufort Inlet, from data on September 12 and 13, 2019. Pixel resolution is 25-cm. Pixel-based raster matrix includes 3 layers of information for each pixel and a fourth alpha, or transparency, band for encoding no-data values. 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 Attribute: Attribute_Label: Band_4 Attribute_Definition: Alpha band, where 0 is transparent, or no-data, and 255 is opaque, or has data. Attribute_Definition_Source: Agisoft Metashape Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 255 Overview_Description: Entity_and_Attribute_Overview: There are no text attributes associated with a binary GeoTIFF image. The horizontal projection is in NAD83(2011) UTM Zone 18N for all ortho products. The 'no-data' values are encoded in the alpha channel (Band 4) as 0 (no data) and 255 (data). Zeros populate the area outside the orthoimage but within the rectangular extent of the raster bounds. Pixel-based raster matrix includes 3 RGB layers of information for each pixel. There are five RGB(A) orthoimage GeoTIFFs. The filename for each file is formatted as "date_product_location_to_location_CRS_resolution_cog.tif", where date is the date the raw aerial images were collected (in YYYYMMDD-MMDD format), product is RGBAvg that indicates the orthoimage blending mode in Agisoft Metashape, location_to_location is the specific geographic location in North Carolina of the northern extent to the southern extent, CRS is the horizontal coordinate reference system used, resolution is the horizontal pixel resolution of the grid, and 'cog' denotes the product is a cloud-optimized GeoTIFF. Entity_and_Attribute_Detail_Citation: USGS Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey - Sciencebase Contact_Address: Address_Type: mailing address Address: Denver Federal Center, Building 810, Mail Stop 302 City: Denver State_or_Province: CO Postal_Code: 80225 Country: United States Contact_Voice_Telephone: 1-888-275-8747 Contact_Electronic_Mail_Address: sciencebase@usgs.gov Resource_Description: The nine three-band RGB-averaged cloud-optimized GeoTIFF ortho products are deflate compressed, have 25 cm resolution, and represent the coast of North Carolina after Hurricane Dorian on September 8, 12, and 13, 2019. 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 on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: GeoTIFF Format_Information_Content: Nine 25 cm resolution three-band RGB averaged 8-bit unsigned integer cloud-optimized orthoimage GeoTIFFs. Transfer size is approximate size of all products, each file ranges from 500 MB to 2 GB. File_Decompression_Technique: none Transfer_Size: 13000 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://www.sciencebase.gov/catalog/item/619c1cd7d34eb622f692fe9d Network_Resource_Name: https://doi.org/10.5066/P9K3TWY7 Access_Instructions: Data can be downloaded using the Network_Resource_Name links. The first link is to the page where you can download data files individually. The second link points to the landing page for the entire data release. Fees: None. Metadata_Reference_Information: Metadata_Date: 20221011 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey, Pacific Coastal and Marine Science Center Contact_Person: PCMSC Science Data Coordinator Contact_Address: Address_Type: mailing and physical Address: 2885 Mission Street City: Santa Cruz State_or_Province: CA Postal_Code: 95060 Contact_Voice_Telephone: 831-427-4747 Contact_Electronic_Mail_Address: pcmsc_data@usgs.gov Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998