Metadata: Identification_Information: Citation: Citation_Information: Originator: U.S. Geological Survey Publication_Date: 20210824 Title: Town Neck Beach, Massachusetts, 10 cm 2016-2017 Digital Elevation Models Edition: 1.0 Geospatial_Data_Presentation_Form: raster digital data Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/P9BFD3YH 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/P9BFD3YH Online_Linkage: https://www.sciencebase.gov/catalog/item/60e74e6ad34e2a7685d0c6c8 Larger_Work_Citation: Citation_Information: Originator: C. Sherwood Originator: J. Over Originator: K. Soenen Publication_Date: 2021 Title: Structure from motion products associated with UAS flights in Sandwich, Massachusetts between January 2016 - September 2017 Edition: 1.0 Geospatial_Data_Presentation_Form: digital files Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/P9BFD3YH Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Other_Citation_Details: Suggested citation: Sherwood, C.R., Over, J.R., and Soenen, K., 2021, Structure from motion products associated with UAS flights in Sandwich, Massachusetts: U.S. Geological Survey data release, https://doi.org/10.5066/P9BFD3YH. Online_Linkage: https://doi.org/10.5066/P9BFD3YH Online_Linkage: https://www.sciencebase.gov/catalog/item/60e74d4bd34e2a7685d0c428 Description: Abstract: Low-altitude (80-100 meters above ground level) Unmanned Aircraft Systems (UAS) imagery of Town Neck Beach in Sandwich, Massachusetts, were used in a structure-from-motion (SfM) photogrammetry workflow to create high-resolution topographic datasets. Imagery was collected at close to low tide on twelve days to observe changes in beach and dune morphology. Ground control points (GCPs), which are temporary targets on the ground located by using a real-time kinematic global navigation satellite system (RTK-GNSS) base station and rover, were used to constrain the SfM process. Photoscan (v. 1.2-1.4) was used to create a digital elevation model and orthomosaic for each data collection day. Collection of these data was supported by the U.S. Geological Survey Coastal/Marine Hazards and Resources Program and were conducted under USGS field activity numbers 2016-013-FA, 2016-043-FA, 2016-053-FA, 2016-054-FA, 2016-055-FA, 2017-005-FA, 2017-008-FA, 2017-010-FA, 2017-014-FA, 2017-027-FA, 2017-029-FA, and 2017-050-FA. Purpose: May be used as a high-resolution elevation dataset of Town Neck Beach for use by the public, researchers, and others to observe ground conditions and change over time. Supplemental_Information: For more information see the imagery and GCP releases; https://www.sciencebase.gov/catalog/item/5a7daca0e4b00f54eb24a4f5 and https://www.sciencebase.gov/catalog/item/5cf12e89e4b056af3664e718. UAS mapping was conducted at Town Neck Beach and adjacent Spring Hill Beach (January 9, 2017 only) in Sandwich, Massachusetts. The products of the imagery releases include the data collected in 2016 and 2017. The bounding coordinates below represent the maximum extents of all the surveys, no single survey covers the entire extent. The DEM includes returns from the vegetation canopy and is thus also a Digital Surface Model (DSM), a type of DEM. Geospatial software is recommended for viewing. Time_Period_of_Content: Time_Period_Information: Multiple_Dates/Times: Single_Date/Time: Calendar_Date: 20160122 Single_Date/Time: Calendar_Date: 20160125 Single_Date/Time: Calendar_Date: 20160211 Single_Date/Time: Calendar_Date: 20160330 Single_Date/Time: Calendar_Date: 20160921 Single_Date/Time: Calendar_Date: 20170109 Single_Date/Time: Calendar_Date: 20170125 Single_Date/Time: Calendar_Date: 20170214 Single_Date/Time: Calendar_Date: 20170316 Single_Date/Time: Calendar_Date: 20170428 Single_Date/Time: Calendar_Date: 20170504 Single_Date/Time: Calendar_Date: 20170918 Currentness_Reference: ground condition: data represent twelve days of collection between January 2016 and September 2017 Status: Progress: Complete Maintenance_and_Update_Frequency: Not planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -70.49754246 East_Bounding_Coordinate: -70.47197217 North_Bounding_Coordinate: 41.77618650 South_Bounding_Coordinate: 41.76013342 Keywords: Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: geoscientificInformation Theme_Keyword: oceans Theme_Keyword: imageryBaseMapsEarthCover Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: U.S. Geological Survey Theme_Keyword: USGS Theme_Keyword: Coastal/Marine Hazards and Resources Program Theme_Keyword: CMHRP Theme_Keyword: Woods Hole Coastal and Marine Science Center Theme_Keyword: WHCMSC Theme_Keyword: FC300X Theme_Keyword: DJI Phantom 3 quadcopter Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: remote sensing Theme_Keyword: aerial photography Theme_Keyword: image collections Theme_Keyword: coastal processes Theme_Keyword: geomorphology Theme_Keyword: structure from motion Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:60e74e6ad34e2a7685d0c6c8 Place: Place_Keyword_Thesaurus: Common geographic areas Place_Keyword: United States Place_Keyword: Cape Cod Place_Keyword: Sandwich Place_Keyword: Massachusetts 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. 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. Not for navigational use. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Christopher R Sherwood Contact_Organization: U.S. Geological Survey, Northeast Region Contact_Position: Research Oceanographer Contact_Address: Address_Type: mailing address Address: 384 Woods Hole Road City: Woods Hole State_or_Province: MA Postal_Code: 02543 Country: US Contact_Voice_Telephone: 508-457-2269 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: csherwood@usgs.gov Browse_Graphic: Browse_Graphic_File_Name: Sandwich_DEM_Browse.JPG https://www.sciencebase.gov/catalog/file/get/60e74e6ad34e2a7685d0c6c8?name=Sandwich_DEM_Browse.JPG Browse_Graphic_File_Description: Example section of an elevation-colored digital elevation (surface) model Browse_Graphic_File_Type: JPEG Native_Data_Set_Environment: Products were processed in Photoscan (v. 1.2-1.4). 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: Tom Noble Originator: Christopher R. Sherwood Originator: Jonathan A. Warrick Originator: Phillipe A. Wernette Publication_Date: 2021 Title: Processing coastal imagery with Agisoft Metashape Professional Edition, version 1.6—Structure from motion workflow documentation Publication_Information: Publication_Place: Woods Hole Coastal and Marine Science Center, Woods Hole, MA Publisher: US Geological Survey Other_Citation_Details: This is a user guide that details the Agisoft Metashape workflow that take imagery and creates 3D products; Photoscan is the precursor program to Metashape but the steps are very similar. Online_Linkage: https://doi.org/10.3133/ofr20211039 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: The source imagery and positional information and metadata that were used to create these photogrammetrically derived digital elevation models are available here: https://doi.org/10.5066/P9CJOMBM and https://doi.org/10.5066/F7QC02RM. Information on the horizontal and vertical accuracies of the source data can be found within the data release metadata. Ground Control Points were used to constrain the products. Logical_Consistency_Report: All aerial photographs were acquired by with the integrated DJI FC300X camera mounted on a DJI Phantom 3 quadcopter unmanned aerial system (UAS). Images were collected along pre-planned lines with 50 to 60% cross-track overlap and 65-70% along-track overlap. After images were aligned the dense cloud was edited (see processing steps) to remove erroneous points from the surface before constructing the elevation model. All data fall into expected ranges except for points near tall buildings, areas of poorer image overlap, and just offshore of the waterline, where the data return is often sparse, noisy, and erroneous. The DEM includes returns from the vegetation canopy. Completeness_Report: Repeat UAS surveys were done to map Town Neck Beach and adjacent Spring Hill Beach in Sandwich, MA twelve times between January 2016-September 2017. The final DEM products are interpolated and have been cropped to remove noise and zones of high uncertainty in the foreshore, offshore, inlet, and near clustered buildings, therefore the DEMs do not cover the same exact extent as the associated orthorectified products available in this larger work citation. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: The horizontal positional accuracy for each DEM was evaluated against independent photo-identifiable ground control points (GCPs) measured with survey-grade GPS, each survey has between 19-41 GCPs associated with the survey, which have horizontal accuracies around 1.5 cm. The total horizontal Root Mean Square Error (RMSE) of the DEMs is on average 10 cm. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: The vertical positional accuracy for each DEM was evaluated against independent photo-identifiable ground control points (GCPs) measured with survey-grade GPS, each survey has between 19-41 GCPs associated with the survey, which have horizontal accuracies around 0.5 cm. The total vertical Root Mean Square Error (RMSE) of the DEMs is on average 10 cm. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: Ellyn T Montgomery Originator: Christopher R Sherwood Originator: Peter Traykovski Originator: Barry Irwin Originator: Jonathan Borden Originator: Marinna M Martini Originator: Simon Minor Publication_Date: 2019 Title: Geotagged Low-Altitude Aerial Imagery From Unmanned Aerial System 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 Geospatial_Data_Presentation_Form: remote-sensing image and tabular digital data Publication_Information: Publication_Place: Woods Hole Coastal and Marine Science Center, Woods Hole, MA Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.5066/p9cjombm Type_of_Source_Media: disc Source_Time_Period_of_Content: Time_Period_Information: Multiple_Dates/Times: Single_Date/Time: Calendar_Date: 20160122 Single_Date/Time: Calendar_Date: 20160125 Single_Date/Time: Calendar_Date: 20160211 Single_Date/Time: Calendar_Date: 20160330 Single_Date/Time: Calendar_Date: 20160921 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: Imagery and Ground Control Points from 2016 Flights Source_Contribution: Source JPEG imagery and control points for 2016 flights Source_Information: Source_Citation: Citation_Information: Originator: Christopher R Sherwood Originator: Peter A. Traykovski Originator: Ellyn T Montgomery Originator: Jonathan Borden Originator: Sandra M. Brosnahan Originator: Barry J. Irwin Originator: Eric D Marsjanik Originator: Marinna A Martini Originator: Steven E Suttles Publication_Date: 2019 Title: 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 on January 9, January 25, February 14, March 16, April 28, May 4, and September 18, 2017 Geospatial_Data_Presentation_Form: dataset Publication_Information: Publication_Place: Woods Hole Coastal and Marine Science Center, Woods Hole, MA Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.5066/f7qc02rm Type_of_Source_Media: Digital and/or Hardcopy Source_Time_Period_of_Content: Time_Period_Information: Multiple_Dates/Times: Single_Date/Time: Calendar_Date: 20170109 Single_Date/Time: Calendar_Date: 20170125 Single_Date/Time: Calendar_Date: 20170214 Single_Date/Time: Calendar_Date: 20170316 Single_Date/Time: Calendar_Date: 20170428 Single_Date/Time: Calendar_Date: 20170504 Single_Date/Time: Calendar_Date: 20170918 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: Imagery and Ground Control Points from 2017 Flights Source_Contribution: Source JPEG imagery and control points for 2017 flights Process_Step: Process_Description: The images and ground control points published in the 2016 and 2017 data releases were processed in Photoscan (v. 1.2-1.4) following the general workflow of Over and others (2021). The general steps and deviations for each individual date are provided here. All flights were processed in UTM Zone 19N relative to NAD83(2011) and NAVD88 (m). 1. Separate camera models and camera groups were created for each flight. Image sets were edited to remove images that were blurry, tilted to include the horizon, showed only water, or were taken before takeoff or after landing. 2. Imagery (with positions) were aligned to create a point cloud using a 'High' alignment setting, keypoint limit of 80,000, tiepoint limit of 0. 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. With each filter iteration points were selected, deleted, and then the camera model optimized to refine the focal length, cx, cy, k1, k2, k3, p1, and p2 camera model coefficients. 4. Detect Markers Tool was used to auto locate GCP targets, and the locations of targets not found through this procedure (including non-standard in-place targets) were manually located. 5. A high quality dense point cloud was generated for the chunk with 'aggressive' filtering. 6. A DEM was built from the dense point cloud with interpolation (inverse distance weighting) enabled. 7. DEM was exported in NAD83(2011) UTM Zone 19N and NAVD88(meters) with a 10 centimeter cell size. 8. DEM was clipped manually in Global Mapper (v. 20) to a polygon that removed high uncertainty regions near wetted areas near the lower shoreface and tidal inlets with help from the corresponding orthorectified product. Source_Used_Citation_Abbreviation: Imagery and Ground Control Points from 2016 Flights Source_Used_Citation_Abbreviation: Imagery and Ground Control Points from 2017 Flights Process_Date: 201711 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Christopher R Sherwood Contact_Organization: U.S. Geological Survey, Northeast Region Contact_Position: Research Oceanographer Contact_Address: Address_Type: mailing address Address: 384 Woods Hole Road City: Woods Hole State_or_Province: MA Postal_Code: 02543 Country: US Contact_Voice_Telephone: 508-457-2269 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: csherwood@usgs.gov Process_Step: Process_Description: Final clipped DEMs were turned into Cloud Optimized GeoTIFFs (COG) using gdal_translate with the following command:for %i in (.\*.tif) do gdal_translate %i .\cog\%~ni_cog.tif -co COMPRESS=LZW -co COPY_SRC_OVERVIEWS=YES -co BIGTIFF=YES -co TILED=YES (v. 3.1.4 accessed October 20, 2020 https://gdal.org/). Where i was the name of each geoTIFF section. Process_Date: 20210707 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Jin-Si R Over Contact_Organization: U.S. Geological Survey, Northeast Region Contact_Position: Geographer Contact_Address: Address_Type: mailing address Address: 384 Woods Hole Road City: Woods Hole State_or_Province: MA Postal_Code: 02543 Country: US Contact_Voice_Telephone: 508-457-2269 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: jover@usgs.gov 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: 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: 1 Ordinate_Resolution: 1 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 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: 20160122_SandwichTNB_DSM_10cm_UTM19N_NAVD88_cog.tif Entity_Type_Definition: A raster dataset (Cloud-Optimized GeoTIFF format) with encoded elevation values of Town Neck Beach in Massachusetts on January 22, 2016. Pixel resolution is 10-cm. Entity_Type_Definition_Source: U.S. Geological Survey, Coastal and Marine Hazards and Resources Program Attribute: Attribute_Label: Value Attribute_Definition: Surface elevation orthometric height (m) in UTM Zone 19N, NAVD88 using Geoid 2012B (no data value = -32767) Attribute_Definition_Source: U.S. Geological Survey, Woods Hole Coastal and Marine Science Center Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: -32767 Enumerated_Domain_Value_Definition: No data Enumerated_Domain_Value_Definition_Source: Producer-defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -21.626 Range_Domain_Maximum: 14.395 Attribute_Units_of_Measure: meters Detailed_Description: Entity_Type: Entity_Type_Label: 20160125_SandwichTNB_DSM_10cm_UTM19N_NAVD88_cog.tif Entity_Type_Definition: A raster dataset (Cloud-Optimized GeoTIFF format) with encoded elevation values of Town Neck Beach in Massachusetts on January 25, 2016. Pixel resolution is 10-cm. Entity_Type_Definition_Source: U.S. Geological Survey, Coastal and Marine Hazards and Resources Program Attribute: Attribute_Label: Value Attribute_Definition: Surface elevation orthometric height (m) in UTM Zone 19N, NAVD88 using Geoid 2012B (no data value = -32767) Attribute_Definition_Source: U.S. Geological Survey, Woods Hole Coastal and Marine Science Center Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: -32767 Enumerated_Domain_Value_Definition: No data Enumerated_Domain_Value_Definition_Source: Producer-defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -7.496 Range_Domain_Maximum: 15.102 Attribute_Units_of_Measure: meters Detailed_Description: Entity_Type: Entity_Type_Label: 20160211_SandwichTNB_DSM_10cm_UTM19N_NAVD88_cog.tif Entity_Type_Definition: A raster dataset (Cloud-Optimized GeoTIFF format) with encoded elevation values of Town Neck Beach in Massachusetts on February 11, 2016. Pixel resolution is 10-cm. Entity_Type_Definition_Source: U.S. Geological Survey, Coastal and Marine Hazards and Resources Program Attribute: Attribute_Label: Value Attribute_Definition: Surface elevation orthometric height (m) in UTM Zone 19N, NAVD88 using Geoid 2012B (no data value = -32767) Attribute_Definition_Source: U.S. Geological Survey, Woods Hole Coastal and Marine Science Center Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: -32767 Enumerated_Domain_Value_Definition: No data Enumerated_Domain_Value_Definition_Source: Producer-defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -4.971 Range_Domain_Maximum: 14.702 Attribute_Units_of_Measure: meters Detailed_Description: Entity_Type: Entity_Type_Label: 20160330_SandwichTNB_DSM_10cm_UTM19N_NAVD88_cog.tif Entity_Type_Definition: A raster dataset (Cloud-Optimized GeoTIFF format) with encoded elevation values of Town Neck Beach in Massachusetts on March 30, 2016. Pixel resolution is 10-cm. Entity_Type_Definition_Source: U.S. Geological Survey, Coastal and Marine Hazards and Resources Program Attribute: Attribute_Label: Value Attribute_Definition: Surface elevation orthometric height (m) in UTM Zone 19N, NAVD88 using Geoid 2012B (no data value = -32767) Attribute_Definition_Source: U.S. Geological Survey, Woods Hole Coastal and Marine Science Center Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: -32767 Enumerated_Domain_Value_Definition: No data Enumerated_Domain_Value_Definition_Source: Producer-defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -3.472 Range_Domain_Maximum: 15.025 Attribute_Units_of_Measure: meters Detailed_Description: Entity_Type: Entity_Type_Label: 20160921_SandwichTNB_DSM_10cm_UTM19N_NAVD88_cog.tif Entity_Type_Definition: A raster dataset (Cloud-Optimized GeoTIFF format) with encoded elevation values of Town Neck Beach in Massachusetts on September 21, 2016. Pixel resolution is 10-cm. Entity_Type_Definition_Source: U.S. Geological Survey, Coastal and Marine Hazards and Resources Program Attribute: Attribute_Label: Value Attribute_Definition: Surface elevation orthometric height (m) in UTM Zone 19N, NAVD88 using Geoid 2012B (no data value = -32767) Attribute_Definition_Source: U.S. Geological Survey, Coastal and Marine Hazards and Resources Program Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: -32767 Enumerated_Domain_Value_Definition: No data Enumerated_Domain_Value_Definition_Source: Producer-defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -4.324 Range_Domain_Maximum: 15.116 Attribute_Units_of_Measure: meters Detailed_Description: Entity_Type: Entity_Type_Label: 20170109_SandwichTNB_DSM_10cm_UTM19N_NAVD88_cog.tif Entity_Type_Definition: A raster dataset (Cloud-Optimized GeoTIFF format) with encoded elevation values of Town Neck Beach in Massachusetts on January 9, 2017. Pixel resolution is 10-cm. Entity_Type_Definition_Source: U.S. Geological Survey, Coastal and Marine Hazards and Resources Program Attribute: Attribute_Label: Value Attribute_Definition: Surface elevation orthometric height (m) in UTM Zone 19N, NAVD88 using Geoid 2012B (no data value = -32767) Attribute_Definition_Source: U.S. Geological Survey, Coastal and Marine Hazards and Resources Program Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: -32767 Enumerated_Domain_Value_Definition: No data Enumerated_Domain_Value_Definition_Source: Producer-defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -19.962 Range_Domain_Maximum: 14.805 Attribute_Units_of_Measure: meters Detailed_Description: Entity_Type: Entity_Type_Label: 20170125_SandwichTNB_DSM_10cm_UTM19N_NAVD88_cog.tif Entity_Type_Definition: A raster dataset (Cloud-Optimized GeoTIFF format) with encoded elevation values of Town Neck Beach in Massachusetts on January 25, 2017. Pixel resolution is 10-cm. Entity_Type_Definition_Source: U.S. Geological Survey, Coastal and Marine Hazards and Resources Program Attribute: Attribute_Label: Value Attribute_Definition: Surface elevation orthometric height (m) in UTM Zone 19N, NAVD88 using Geoid 2012B (no data value = -32767) Attribute_Definition_Source: U.S. Geological Survey, Coastal and Marine Hazards and Resources Program Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: -32767 Enumerated_Domain_Value_Definition: No data Enumerated_Domain_Value_Definition_Source: Producer-defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -12.312 Range_Domain_Maximum: 15.341 Attribute_Units_of_Measure: meters Detailed_Description: Entity_Type: Entity_Type_Label: 20170214_SandwichTNB_DSM_10cm_UTM19N_NAVD88_cog.tif Entity_Type_Definition: A raster dataset (Cloud-Optimized GeoTIFF format) with encoded elevation values of Town Neck Beach in Massachusetts on February 14, 2017. Pixel resolution is 10-cm. Entity_Type_Definition_Source: U.S. Geological Survey, Coastal and Marine Hazards and Resources Program Attribute: Attribute_Label: Value Attribute_Definition: Surface elevation orthometric height (m) in UTM Zone 19N, NAVD88 using Geoid 2012B (no data value = -32767) Attribute_Definition_Source: U.S. Geological Survey, Coastal and Marine Hazards and Resources Program Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: -32767 Enumerated_Domain_Value_Definition: No data Enumerated_Domain_Value_Definition_Source: Producer-defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -6.57 Range_Domain_Maximum: 14.974 Attribute_Units_of_Measure: meters Detailed_Description: Entity_Type: Entity_Type_Label: 20170316_SandwichTNB_DSM_10cm_UTM19N_NAVD88_cog.tif Entity_Type_Definition: A raster dataset (Cloud-Optimized GeoTIFF format) with encoded elevation values of Town Neck Beach in Massachusetts on March 16, 2017. Pixel resolution is 10-cm. Entity_Type_Definition_Source: U.S. Geological Survey, Coastal and Marine Hazards and Resources Program Attribute: Attribute_Label: Value Attribute_Definition: Surface elevation orthometric height (m) in UTM Zone 19N, NAVD88 using Geoid 2012B (no data value = -32767) Attribute_Definition_Source: U.S. Geological Survey, Woods Hole Coastal and Marine Science Center Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: -32767 Enumerated_Domain_Value_Definition: No data Enumerated_Domain_Value_Definition_Source: Producer-defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -4.729 Range_Domain_Maximum: 14.212 Attribute_Units_of_Measure: meters Detailed_Description: Entity_Type: Entity_Type_Label: 20170428_SandwichTNB_DSM_10cm_UTM19N_NAVD88_cog.tif Entity_Type_Definition: A raster dataset (Cloud-Optimized GeoTIFF format) with encoded elevation values of Town Neck Beach in Massachusetts on April 28, 2017. Pixel resolution is 10-cm. Entity_Type_Definition_Source: U.S. Geological Survey, Coastal and Marine Hazards and Resources Program Attribute: Attribute_Label: Value Attribute_Definition: Surface elevation orthometric height (m) in UTM Zone 19N, NAVD88 using Geoid 2012B (no data value = -32767) Attribute_Definition_Source: U.S. Geological Survey, Woods Hole Coastal and Marine Science Center Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: -32767 Enumerated_Domain_Value_Definition: No data Enumerated_Domain_Value_Definition_Source: Producer-defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -3.965 Range_Domain_Maximum: 18.796 Attribute_Units_of_Measure: meters Detailed_Description: Entity_Type: Entity_Type_Label: 20170504_SandwichTNB_DSM_10cm_UTM19N_NAVD88_cog.tif Entity_Type_Definition: A raster dataset (Cloud-Optimized GeoTIFF format) with encoded elevation values of Town Neck Beach in Massachusetts on April 4, 2017. Pixel resolution is 10-cm. Entity_Type_Definition_Source: U.S. Geological Survey, Coastal and Marine Hazards and Resources Program Attribute: Attribute_Label: Value Attribute_Definition: Surface elevation orthometric height (m) in UTM Zone 19N, NAVD88 using Geoid 2012B (no data value = -32767) Attribute_Definition_Source: U.S. Geological Survey, Woods Hole Coastal and Marine Science Center Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: -32767 Enumerated_Domain_Value_Definition: No data Enumerated_Domain_Value_Definition_Source: Producer-defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -14.725 Range_Domain_Maximum: 14.945 Attribute_Units_of_Measure: meters Detailed_Description: Entity_Type: Entity_Type_Label: 20170918_SandwichTNB_DSM_10cm_UTM19N_NAVD88_cog.tif Entity_Type_Definition: A raster dataset (Cloud-Optimized GeoTIFF format) with encoded elevation values of Town Neck Beach in Massachusetts on September 18, 2017. Pixel resolution is 10-cm. Entity_Type_Definition_Source: U.S. Geological Survey, Coastal and Marine Hazards and Resources Program Attribute: Attribute_Label: Value Attribute_Definition: Surface elevation orthometric height (m) in UTM Zone 19N, NAVD88 using Geoid 2012B (no data value = -32767) Attribute_Definition_Source: U.S. Geological Survey, Woods Hole Coastal and Marine Science Center Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: -32767 Enumerated_Domain_Value_Definition: No data Enumerated_Domain_Value_Definition_Source: Producer-defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -5.921 Range_Domain_Maximum: 15.003 Attribute_Units_of_Measure: meters Overview_Description: Entity_and_Attribute_Overview: Pixels represent elevation in meters relative to NAVD88, the no-data value is -32767. There are 12 DEM 32-bit floating point cloud optimized GeoTIFFs. The filename for each DEM is formatted as "date_location_DEM_10cm_UTM19N_NAVD88_cog.tif", where date is the date the images were collected (in YYYYMMDD format), location is SandwichTNB where TNB is Town Neck Beach in Massachusetts, DSM is Digital Surface Model, 10cm indicates the resolution of the grid, UTM19N_NAVD88 denotes the horizontal and vertical reference systems, and cog is 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 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: This data release includes twelve 10 cm resolution LZW compressed Cloud Optimized GeoTIFFs of Sandwich Town Neck Beach from January 2016 to September 2017. In order from oldest to most recent the files are 20160122_SandwichTNB_DSM_10cm_UTM19N_NAVD88_cog.tif (196MB), 20160125_SandwichTNB_DSM_10cm_UTM19N_NAVD88_cog.tif (115MB), 20160211_SandwichTNB_DSM_10cm_UTM19N_NAVD88_cog.tif (136MB), 20160330_SandwichTNB_DSM_10cm_UTM19N_NAVD88_cog.tif (125MB), 20160921_SandwichTNB_DSM_10cm_UTM19N_NAVD88_cog.tif (265MB), 20170109_SandwichTNB_DSM_10cm_UTM19N_NAVD88_cog.tif (127MB), 20170125_SandwichTNB_DSM_10cm_UTM19N_NAVD88_cog.tif (116MB), 20170214_SandwichTNB_DSM_10cm_UTM19N_NAVD88_cog.tif (114MB), 20170316_SandwichTNB_DSM_10cm_UTM19N_NAVD88_cog.tif (144MB), 20170428_SandwichTNB_DSM_10cm_UTM19N_NAVD88_cog.tif (204MB), 20170504_SandwichTNB_DSM_10cm_UTM19N_NAVD88_cog.tif (200MB), 20170918_SandwichTNB_DSM_10cm_UTM19N_NAVD88_cog.tif (135MB). 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, 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: Cloud optimized 32-bit floating point 10-cm GeoTIFFs stored with LZW compression. File_Decompression_Technique: none Transfer_Size: 5452.976 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://www.sciencebase.gov/catalog/file/get/60e74e6ad34e2a7685d0c6c8 Network_Resource_Name: https://www.sciencebase.gov/catalog/item/60e74d4bd34e2a7685d0c428 Network_Resource_Name: https://www.sciencebase.gov/catalog/item/60e74e6ad34e2a7685d0c6c8 Network_Resource_Name: https://doi.org/10.5066/P9BFD3YH Access_Instructions: The first link is to download all the DEM data into one zip file, the second is the landing page for the data release, the third to the page with all the Sandwich DEMs where they can be downloaded individually. Fees: none Metadata_Reference_Information: Metadata_Date: 20210824 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Jin-Si R Over Contact_Organization: U.S. Geological Survey, Northeast Region Contact_Position: Geographer Contact_Address: Address_Type: mailing address Address: 384 Woods Hole Road City: Woods Hole State_or_Province: MA Postal_Code: 02543 Country: US Contact_Voice_Telephone: 508-457-2269 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: jover@usgs.gov Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Time_Convention: local time Metadata_Access_Constraints: None Metadata_Use_Constraints: None