Identification_Information: Citation: Citation_Information: Originator: Salisbury, J.B. Originator: Herbst, A.M. Originator: Wikstrom Jones, Katreen Publication_Date: 2019 Title: Photogrammetric digital surface models and orthoimagery of Minnesota Drive, December 5, 2018 Geospatial_Data_Presentation_Form: imagery Series_Information: Series_Name: Raw Data File Issue_Identification: RDF 2019-10H Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Online_Linkage: http://doi.org/10.14509/30278 Description: Abstract: The State of Alaska Division of Geological & Geophysical Surveys (DGGS) produced digital surface models (DSMs) and orthorectified aerial imagery (orthoimagery) over selected locations in the greater Anchorage area following the Mw 7.1 November 30, 2018, Anchorage earthquake. We selected areas of interest (AOIs) based on initial damage reports from the Alaska Department of Transportation & Public Facilities (DOT&PF) and the United States Geological Survey (USGS) in order to document earthquake effects. Aerial photographs collected December 5-6, 2018, were processed using Structure-from-Motion (SfM) photogrammetric techniques to create sub-meter DSMs and orthoimagery. This digital data set covers Minnesota Drive and was collected on December 5, 2018. These data document ground conditions immediately following the 2018 Mw 7.1 Anchorage earthquake. For the purposes of open access to elevation and orthoimagery data sets throughout Alaska, this collection is being released as a Raw Data File with an open end-user license. The data and the data acquisition report are available from the DGGS website: https://elevation.alaska.gov/, http://doi.org/10.14509/30278. Purpose: The data release is one of a series of Alaska Division of Geological & Geophysical Surveys (DGGS) publications that provide digital surface models (DSMs) and orthorectified aerial imagery (orthoimagery) collected over selected locations in the greater Anchorage area following the Mw 7.1 November 30, 2018, Anchorage earthquake. We selected areas of interest (AOIs) based on initial damage reports from the Alaska Department of Transportation & Public Facilities (DOT&PF) and the United States Geological Survey (USGS) in order to document ground conditions immediately following the 2018 Mw 7.1 Anchorage earthquake. Supplemental_Information: >digital surface model: Digital surface models (DSMs) represent all observable elevations within the project extent, capturing vegetation heights, building roofs, and other opaque objects. The raster DSM products in this collection are delivered in 32-bit float format. >orthoimage: Orthoimages are aerial photographs that have been geometrically corrected (orthorectified) for spatial accuracy, coordinating surface elevation with the sensor's location throughout the survey to create a geospatial product of uniform map scale. Collected imagery is assembled into composite mosaics for delivery. Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2018 Currentness_Reference: ground condition Status: Progress: complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -149.923682 East_Bounding_Coordinate: -149.828093 North_Bounding_Coordinate: 61.212079 South_Bounding_Coordinate: 61.114572 Keywords: Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: geoscientificInformation Theme: Theme_Keyword_Thesaurus: Alaska Division of Geological & Geophysical Surveys Theme_Keyword: Aerial Photography Theme_Keyword: Digital Surface Model (DSM) Theme_Keyword: Earthquake Related Hazards Theme_Keyword: Earthquake Related Slope Failure Theme_Keyword: Elevation Theme_Keyword: Engineering Theme_Keyword: Fracturing Theme_Keyword: Geologic Theme_Keyword: Geologic Hazards Theme_Keyword: Geological Process Theme_Keyword: Geology Theme_Keyword: Geomorphology Theme_Keyword: Geotechnical Theme_Keyword: Hazards Theme_Keyword: Orthoimagery Theme_Keyword: Photogrammetry Theme_Keyword: Raster Image Theme_Keyword: Structure From Motion Theme_Keyword: Surficial Geology Theme_Keyword: Topography Place: Place_Keyword_Thesaurus: Alaska Division of Geological & Geophysical Surveys Place_Keyword: Anchorage Access_Constraints: This report, map, and/or dataset is available directly from the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys (see contact information below). Use_Constraints: Any hard copies or published datasets utilizing these datasets shall clearly indicate their source. If the user has modified the data in any way, the user is obligated to describe the types of modifications the user has made. The user specifically agrees not to misrepresent these datasets, nor to imply that changes made by the user were approved by the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys. The State of Alaska makes no express or implied warranties (including warranties for merchantability and fitness) with respect to the character, functions, or capabilities of the electronic data or products or their appropriateness for any user's purposes. In no event will the State of Alaska be liable for any incidental, indirect, special, consequential, or other damages suffered by the user or any other person or entity whether from the use of the electronic services or products or any failure thereof or otherwise. In no event will the State of Alaska's liability to the Requestor or anyone else exceed the fee paid for the electronic service or product. Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: Alaska Division of Geological & Geophysical Surveys Contact_Position: Metadata Manager Contact_Address: Address_Type: mailing and physical Address: 3354 College Road City: Fairbanks State_or_Province: AK Postal_Code: 99709-3707 Country: USA Contact_Voice_Telephone: (907)451-5020 Contact_Facsimile_Telephone: (907)451-5050 Contact_Electronic_Mail_Address: dggspubs@alaska.gov Hours_of_Service: 8 am to 4:30 pm, Monday through Friday, except State holidays Data_Set_Credit: This project was funded by State of Alaska general funds. It coincides with and augments a United States Geological Survey QL2 lidar project flown by Kodiak Mapping and available through the DGGS Elevation Portal, https://elevation.alaska.gov/#61.17636:-149.62555:9 (DGGS Staff, 2013). We thank Seth K. Kiester for assistance with equipment and logistics. Cross_Reference: Citation_Information: Originator: Salisbury, J.B. Originator: Herbst, A.M. Originator: Wikstrom Jones, Katreen Publication_Date: 2019 Title: November 30, 2018, Mw 7.1 Anchorage earthquake photogrammetry Series_Information: Series_Name: Raw Data File Issue_Identification: RDF 2019-10 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Online_Linkage: http://doi.org/10.14509/30270 Cross_Reference: Citation_Information: Originator: Salisbury, J.B. Originator: Herbst, A.M. Originator: Wikstrom Jones, Katreen Publication_Date: 2019 Title: Photogrammetric digital surface models and orthoimagery of Ted Stevens Anchorage International Airport, December 6, 2018 Series_Information: Series_Name: Raw Data File Issue_Identification: RDF 2019-10A Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Online_Linkage: http://doi.org/10.14509/30271 Cross_Reference: Citation_Information: Originator: Salisbury, J.B. Originator: Herbst, A.M. Originator: Wikstrom Jones, Katreen Publication_Date: 2019 Title: Photogrammetric digital surface models and orthoimagery of Campbell Lake Dam, December 5, 2018 Series_Information: Series_Name: Raw Data File Issue_Identification: RDF 2019-10B Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Online_Linkage: http://doi.org/10.14509/30272 Cross_Reference: Citation_Information: Originator: Salisbury, J.B. Originator: Herbst, A.M. Originator: Wikstrom Jones, Katreen Publication_Date: 2019 Title: Photogrammetric digital surface models and orthoimagery of EauClaire Place, December 5, 2018 Series_Information: Series_Name: Raw Data File Issue_Identification: RDF 2019-10C Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Online_Linkage: http://doi.org/10.14509/30273 Cross_Reference: Citation_Information: Originator: Salisbury, J.B. Originator: Herbst, A.M. Originator: Wikstrom Jones, Katreen Publication_Date: 2019 Title: Photogrammetric digital surface models and orthoimagery of Eklutna Lake, December 5, 2018 Series_Information: Series_Name: Raw Data File Issue_Identification: RDF 2019-10D Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Online_Linkage: http://doi.org/10.14509/30274 Cross_Reference: Citation_Information: Originator: Salisbury, J.B. Originator: Herbst, A.M. Originator: Wikstrom Jones, Katreen Publication_Date: 2019 Title: Photogrammetric digital surface models and orthoimagery of Glenn Highway, December 5, 2018 Series_Information: Series_Name: Raw Data File Issue_Identification: RDF 2019-10E Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Online_Linkage: http://doi.org/10.14509/30275 Cross_Reference: Citation_Information: Originator: Salisbury, J.B. Originator: Herbst, A.M. Originator: Wikstrom Jones, Katreen Publication_Date: 2019 Title: Photogrammetric digital surface models and orthoimagery of Lake O the Hills neighborhood, December 5, 2018 Series_Information: Series_Name: Raw Data File Issue_Identification: RDF 2019-10F Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Online_Linkage: http://doi.org/10.14509/30276 Cross_Reference: Citation_Information: Originator: Salisbury, J.B. Originator: Herbst, A.M. Originator: Wikstrom Jones, Katreen Publication_Date: 2019 Title: Photogrammetric digital surface models and orthoimagery of Mackenzie Road, December 5, 2018 Series_Information: Series_Name: Raw Data File Issue_Identification: RDF 2019-10G Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Online_Linkage: http://doi.org/10.14509/30277 Cross_Reference: Citation_Information: Originator: Salisbury, J.B. Originator: Herbst, A.M. Originator: Wikstrom Jones, Katreen Publication_Date: 2019 Title: Photogrammetric digital surface models and orthoimagery of Pittman Road, December 5, 2018 Series_Information: Series_Name: Raw Data File Issue_Identification: RDF 2019-10I Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Online_Linkage: http://doi.org/10.14509/30279 Cross_Reference: Citation_Information: Originator: Salisbury, J.B. Originator: Herbst, A.M. Originator: Wikstrom Jones, Katreen Publication_Date: 2019 Title: Photogrammetric digital surface models and orthoimagery of Potter Creek, December 6, 2018 Series_Information: Series_Name: Raw Data File Issue_Identification: RDF 2019-10J Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Online_Linkage: http://doi.org/10.14509/30280 Cross_Reference: Citation_Information: Originator: Salisbury, J.B. Originator: Herbst, A.M. Originator: Wikstrom Jones, Katreen Publication_Date: 2019 Title: Photogrammetric digital surface models and orthoimagery of Seward Highway, December 6, 2018 Series_Information: Series_Name: Raw Data File Issue_Identification: RDF 2019-10K Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Online_Linkage: http://doi.org/10.14509/30281 Cross_Reference: Citation_Information: Originator: Salisbury, J.B. Originator: Herbst, A.M. Originator: Wikstrom Jones, Katreen Publication_Date: 2019 Title: Photogrammetric digital surface models and orthoimagery of Ship Creek Dam, December 5, 2018 Series_Information: Series_Name: Raw Data File Issue_Identification: RDF 2019-10L Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Online_Linkage: http://doi.org/10.14509/30282 Cross_Reference: Citation_Information: Originator: Salisbury, J.B. Originator: Herbst, A.M. Originator: Wikstrom Jones, Katreen Publication_Date: 2019 Title: Photogrammetric digital surface models and orthoimagery of Vine Road, December 5, 2018 Series_Information: Series_Name: Raw Data File Issue_Identification: RDF 2019-10M Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Online_Linkage: http://doi.org/10.14509/30283 Cross_Reference: Citation_Information: Originator: Salisbury, J.B. Originator: Herbst, A.M. Originator: Wikstrom Jones, Katreen Publication_Date: 2019 Title: Photogrammetric digital surface models and orthoimagery of Westchester Lagoon, December 5, 2018 Series_Information: Series_Name: Raw Data File Issue_Identification: RDF 2019-10N Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Online_Linkage: http://doi.org/10.14509/30284 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: We evaluated data quality based on vertical and horizontal accuracy compared to control data. See accompanying data acquisition report for a comprehensive listing of control points, checkpoints, accuracy statistics, and known anomalies. Logical_Consistency_Report: We evaluated data quality based on vertical and horizontal accuracy compared to control data. Root mean square errors (RMSE) are reported in the accompanying acquisition report. Completeness_Report: Data voids may be observed in the orthophotos. These gaps are a result from the orthorectification process, where pixels where spatially adjusted and the formerly occupied area was not interpolated. Because vertical elevation control is based on a 2015 lidar survey, these data are not suitable for calculating regional-scale vertical ground surface deformation. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Due to the size and scale of the study area, conventional ground control methods were unobtainable within the timeframe of the survey. Instead, we extracted photo-identifiable horizontal ground control from Earth Systems Research Institute's (ESRI) orthoimagery map service (World Imagery [Clarity], https://www.arcgis.com/home/item.html?id=ab399b847323487dba26809bf11ea91a). The ESRI image service provided accuracies of 0.45 m-1 m. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: We used a 2015 lidar survey for the Municipality of Anchorage, Alaska for vertical control on those same points. The 2015 Anchorage lidar data provide a vertical accuracy of 7.2 cm and are available through the DGGS Elevation Portal, https://elevation.alaska.gov/#61.17636:-149.62555:9 Lineage: Process_Step: Process_Description: Aircraft and instrument - Alaska DGGS and the U.S. Bureau of Land Management (BLM) collected digital aerial photographs on December 5-6, 2018, from a fixed-wing (Cessna 180) airborne platform. Photographic survey plans included 60 percent side-lap and 80 percent end-lap coverage at variable above ground-level (AGL) heights, dependent upon the size/shapes of the AOIs and atmospheric conditions. We collected 7,238 photographs, covering 130 square kilometers with ground sample distances (GSDs) ranging from 3.6-22.8 cm. We used a Nikon D850 with an AF-Nikkor 24 mm lens to collect 45.4 Megapixel (8,256 x 5,504 pixels per image), 14-bit NEF.RAW (processed in Adobe Lightroom to 48-bit uncompressed TIFF photographs) and fine JPEGS. The aerial survey was controlled with an automatic flight control system and Aviatrix software, linking the camera shutter release with Global Navigation Satellite System (GNSS), Trimble R7 receiver, and a dual-band Novatel antenna mounted 0.96 m above the camera sensor. Process_Date: 2018 Process_Step: Process_Description: SFM data processing - An equipment malfunction during collection compromised sensor location data for each image. Because the camera shutter maintained synchronicity with GNSS input, surveyed data remained suitable for further processing with additional steps required. We processed and calibrated data from each of the 14 AOIs separately in Agisoft Metashape (Version 1.5.2 build 7838), beginning with photograph alignment and calibration of camera positions. We integrated ground control points (GCPs) in these initial procedures to achieve accurate georeferencing for all subsequent data products. Structure-from-Motion (SfM) processing continued with the construction of point clouds and surface models. Photographs were orthorectified using relative camera positions in conjunction with GCP-controlled surface models. The results were analyzed for quality control using additional checkpoints. Process_Date: 2018 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: raster Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 6 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.999600 Longitude_of_Central_Meridian: -147 Latitude_of_Projection_Origin: 0 False_Easting: 500000.000000 False_Northing: 0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: .00000001 Ordinate_Resolution: .00000001 Planar_Distance_Units: Meters Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1983 Ellipsoid_Name: GRS 80 Semi-major_Axis: 6378137 Denominator_of_Flattening_Ratio: 298.257222101000025 Vertical_Coordinate_System_Definition: Altitude_System_Definition: Altitude_Datum_Name: NAVD88; Geoid12A; EPOCH 2010.00 Altitude_Resolution: 20 Altitude_Distance_Units: meters Altitude_Encoding_Method: Implicit coordinate Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: digital surface model Entity_Type_Definition: Digital surface models (DSMs) represent all observable elevations within the project extent, capturing vegetation heights, building roofs, and other opaque objects. The raster DSM products in this collection are delivered in 32-bit float format. Entity_Type_Definition_Source: Alaska Division of Geological & Geophysical Surveys (DGGS) Entity_Attribute_Layer_Name: digital surface model Detailed_Description: Entity_Type: Entity_Type_Label: orthoimage Entity_Type_Definition: Orthoimages are aerial photographs that have been geometrically corrected (orthorectified) for spatial accuracy, coordinating surface elevation with the sensor's location throughout the survey to create a geospatial product of uniform map scale. Collected imagery is assembled into composite mosaics for delivery. Entity_Type_Definition_Source: Alaska Division of Geological & Geophysical Surveys (DGGS) Entity_Attribute_Layer_Name: orthoimage Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: Alaska Division of Geological & Geophysical Surveys Contact_Position: Metadata Manager Contact_Address: Address_Type: mailing and physical Address: 3354 College Road City: Fairbanks State_or_Province: AK Postal_Code: 99709-3707 Country: USA Contact_Voice_Telephone: (907)451-5020 Contact_Facsimile_Telephone: (907)451-5050 Contact_Electronic_Mail_Address: dggspubs@alaska.gov Hours_of_Service: 8 am to 4:30 pm, Monday through Friday, except State holidays Resource_Description: RDF 2019-10H Distribution_Liability: The State of Alaska makes no expressed or implied warranties (including warranties for merchantability and fitness) with respect to the character, functions, or capabilities of the electronic data or products or their appropriateness for any user's purposes. In no event will the State of Alaska be liable for any incidental, indirect, special, consequential, or other damages suffered by the user or any other person or entity whether from the use of the electronic services or products or any failure thereof or otherwise. In no event will the State of Alaska's liability to the Requestor or anyone else exceed the fee paid for the electronic service or product. Standard_Order_Process: Non-digital_Form: DGGS publications are available as free online downloads or you may purchase paper hard-copies or digital files on CD/DVD or other digital storage media by mail, phone, fax, or email from the DGGS Fairbanks office. To purchase this or other printed reports and maps, contact DGGS by phone (907-451-5020), e-mail (dggspubs@alaska.gov), or fax (907-451-5050). Payment accepted: Cash, check, money order, VISA, or MasterCard. Turnaround time is 1-2 weeks unless special arrangements are made and an express fee is paid. Shipping charge will be the actual cost of postage and will be added to the total amount due. Contact us for the exact shipping amount. Fees: Contact DGGS for current pricing Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: imagery Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://doi.org/10.14509/30278 Fees: Free download Metadata_Reference_Information: Metadata_Date: 20191230 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: Alaska Division of Geological & Geophysical Surveys Contact_Person: Simone Montayne Contact_Position: Metadata Manager Contact_Address: Address_Type: mailing and physical Address: 3354 College Road City: Fairbanks State_or_Province: AK Postal_Code: 99709-3707 Country: USA Contact_Voice_Telephone: (907)451-5020 Contact_Facsimile_Telephone: (907)451-5050 Contact_Electronic_Mail_Address: dggspubs@alaska.gov Hours_of_Service: 8 am to 4:30 pm, Monday through Friday, except State holidays Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Use_Constraints: If the user has modified the data in any way they are obligated to describe the types of modifications they have performed in the supporting metadata file. User specifically agrees not to imply that changes they made were approved by the Alaska Department of Natural Resources or Division of Geological & Geophysical Surveys. Metadata_Extensions: Online_Linkage: http://www.dggs.alaska.gov/metadata/dggs.ext Profile_Name: dggs metadata extensions