Identification_Information: Citation: Citation_Information: Originator: Hubbard, T.D. Originator: Wolken, G.J. Originator: Stevens, D.S.P. Originator: Combellick, R.A. Publication_Date: 2013 Title: High-resolution lidar data for the Whittier area, Passage Canal, and Portage Lake, Alaska Series_Information: Series_Name: Raw Data File Issue_Identification: RDF 2013-3 Publication_Information: Publication_Place: Fairbanks, AK, USA Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 5 p. Online_Linkage: http://dx.doi.org/10.14509/24976 Description: Abstract: In support of geologic mapping and hazards evaluation in and near Whittier, Alaska, the Division of Geological & Geophysical Surveys (DGGS) acquired, and is making publicly available, lidar (light detection and ranging) data for an area along Passage Canal, Portage Lake, and Portage Glacier Highway. The lidar data, acquired and processed by Watershed Sciences, Inc. (WSI) consist of continuous coverage encompassing an area extending from Portage Lake eastward to Logging Company Bay in Passage Canal in the Seward D-4, D-5, and D-6 1:63,360-scale quadrangles. Lidar data collected below 1,600 ft (488 m) elevation have a minimum average pulse density of 8 pulses/square meter; above 1,600 ft (488 m) data were collected with an average pulse density of at least 4 pulses/square meter. Following lidar data collection and processing by WSI and their survey subcontractor, McClintock Land Associates, WSI submitted the data to the State of Oregon Department of Geology and Mineral Industries (DOGAMI) for independent quality control analysis. After addressing any concerns from DOGAMI, WSI submitted the revised dataset to DGGS along with a technical report describing details about the lidar acquisition, accuracy, and quality. DOGAMI also provided a separate report summarizing their methodologies and the results of quality control checks. Purpose: In support of geologic mapping and hazards evaluation in and near Whittier, Alaska, the Division of Geological & Geophysical Surveys (DGGS) acquired, and is making publicly available, lidar (light detection and ranging) data for an area along Passage Canal, Portage Lake, and Portage Glacier Highway. Data will serve multiple purposes but were primarily collected to map geology and evaluate potential geologic hazards. Steep slopes with poor access, combined with dense vegetation and a thick moss ground-cover that obscures the bedrock surface, make the use of lidar one of the most effective ways to map the geology and evaluate unstable slopes and other hazards. Supplemental_Information: This metadata file was written to document and describe, as a whole, all the lidar data products generated for this project. It provides a brief overview to the data acquisition, processing, and quality control steps utilized by DGGS contractors and subcontractors. Watershed Sciences, Inc. has associated additional metadata (via ArcGIS) with many of the distribution files. The metadata fields populated by WSI are viewable via ArcCatalog and may include additional useful information that is specific to each individual file. However, WSI metadata has not been reviewed by DGGS/DOGAMI to ensure accuracy and completeness. We encourage users to review the delivery and quality control reports provided by Watershed Sciences, Inc. and DOGAMI for a comprehensive discussion of their processes. These reports can be found on the citation page for this publication. The DGGS metadata standard extends the FGDC standard to include elements that are required to facilitate our internal data management. These elements, referred to as "layers," group and describe files that have intrinsic logical or topological relationships. Attribute information for the layers (entity) is included in this metadata file under the "Entity_and_Attribute_Information" section. The layers are titled: >Point-cloud data - all returns - classified: Classified (ASPRS standard) lidar attributes for all returns >Point-cloud data - ground returns - classified: Classified (ASPRS standard) lidar attributes for ground returns >LAS index file: Vector data which serves as the index illustrating the spatial location of point cloud (LAS) bin delineation >Raster index: Vector data which displays the project boundary >Hydro-flattened waterbody polygons: Vector data depicting water bodies (includes lakes, canals and rivers) >Bare-earth digital terrain models: A model depicting the earth's surface with all vegetation and human-made structures removed >Highest-hit digital surface models: A model depicting the earth's surface with all vegetation and human-made structures included >Vegetation digital surface models: A model depicting the above-ground height of the vegetation >Lidar intensity images: A grayscale image, similar to an orthophoto, which displays 0-255 grayscale values according to the relative reflectivity (based on lidar return intensity) of objects on the ground >Hillshade images: A grayscale image model created from the bare-earth digital elevation models. It is meant to mimic the hypothetical illumination of the surface according to a specified azimuth and altitude for the sun Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2012 Currentness_Reference: ground condition Status: Progress: complete Maintenance_and_Update_Frequency: none planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -148.883498 East_Bounding_Coordinate: -148.407257 North_Bounding_Coordinate: 60.879156 South_Bounding_Coordinate: 60.757840 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 Geology Theme_Keyword: Geology Theme_Keyword: Geomorphology Theme_Keyword: Geologic Hazards Theme_Keyword: Remote Sensing Theme_Keyword: Digital Elevation Model Theme_Keyword: Hazards Theme_Keyword: Lidar Theme_Keyword: Bare-Earth Digital Elevation Model (DEM) Theme_Keyword: Lidar Intensity Image Theme_Keyword: Hillshade Image Theme_Keyword: Highest Hit Digital Surface Model (DSM) Theme_Keyword: Point Cloud Data Theme_Keyword: Digital Surface Model (DSM) Theme_Keyword: Vegetation Digital Surface Model (DSM) Theme_Keyword: Lidar LAS File Format Theme_Keyword: Raster Index Shapefile Theme_Keyword: Raster Image Theme_Keyword: Slope Instability Place: Place_Keyword_Thesaurus: Alaska Division of Geological & Geophysical Surveys Place_Keyword: Alaska, State of Place_Keyword: Aleutian Islands Place_Keyword: Seward Quadrangle Place_Keyword: City of Whittier Coastal District Place_Keyword: Seward Place_Keyword: Whittier Place_Keyword: Passage Canal Temporal: Temporal_Keyword_Thesaurus: Walker, J. D., and Geissman, J. W., compilers, 2009, Geologic Time Scale: Geological Society of America Temporal_Keyword: Holocene 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_Person: James Weakland Contact_Position: GIS Analyst 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)451-5029 Contact_Voice_Telephone: (907)451-5020 Contact_Electronic_Mail_Address: dggsgis@alaska.gov Hours_of_Service: 8 am to 4:30 pm, Monday through Friday, except State holidays Data_Set_Credit: Financial support for this work came from State of Alaska capital-project funding. The authors are grateful for support from several staff members of the Division of Geological & Geophysical Surveys. Jim Weakland helped process data and create the hillshade images; Lauren Southerland helped organize the data for distribution; Susan Seitz created the programming by which the data are offered online; Simone Montayne assisted with metadata; and Ken Woods manages data on the server. Cross_Reference: Citation_Information: Originator: DGGS Staff Publication_Date: 2013 Title: Engineering Geology FY13 project descriptions Series_Information: Series_Name: Annual Report Issue_Identification: AR 2012-C Publication_Information: Publication_Place: Fairbanks, AK, USA Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: p. 43-55 Online_Linkage: http://dx.doi.org/10.14509/24787 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: LiDAR flight lines have been examined to ensure that there was at least 60% sidelap, there are no gaps between flight-lines, and overlapping flight-lines have consistent elevation values. Shaded relief images have been visually inspected for data errors such as pits, border artifacts, gaps, and shifting. The data was examined at a 1:2000 scale. WSI submitted the data to the State of Oregon Department of Geology and Mineral Industries (DOGAMI) for independent quality control analysis. After addressing any concerns from DOGAMI, WSI submitted the revised data set to DGGS along with a technical report describing details about the lidar acquisition, accuracy, and quality. DOGAMI also provided a separate report summarizing their methodologies and the results of quality control checks. Both reports are available via the DGGS website. Logical_Consistency_Report: Data consistency varies slightly throughout the project area with higher errors in areas of steep terrain. The tests and processing methods used by WSI and DOGAMI to ensure data consistency are described in the accompanying delivery and quality control reports. Completeness_Report: The pulse density distribution varies throughout the study area. Areas below 1,600 feet in elevation, including the City of Whittier, were collected at a higher pulse density (greater or equal to 8 pulses/square meter), with areas above 1,600 feet in elevation collected at greater than or equal to 4 pulses/square meter. The WSI delivery report provides additional information about the lidar pulse density and distribution. Real time kinematic ground survey data (used for absolute vertical adjustment) is available in Appendix A of the delivery report. Aircraft flight-lines (trajectory files) were supplied to DOGAMI for quality control but are not included as a component of this publication. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Horizontal accuracy is regarded as a product of the lidar ground footprint. Lidar is referenced to co-acquired GPS base station data that have accuracies far greater than the value of the lidar footprint. The ground footprint is equal to 1/3333rd of the above - ground flying height. The ground footprint for data collected for this project exceeds typical accuracy of ground control used to reference the lidar data (less than 0.01 meters). Project specifications require the lidar footprint to be between 0.15 and 0.40 meters. The values, tests, and processing methods used by WSI and DOGAMI to ensure relative accuracy are described in the accompanying delivery and quality control reports. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: Vertical accuracy was assessed by comparing GPS survey collected by McClintock Land Associates with lidar digital elevation models to expose offsets. Quality control analysis performed by DOGAMI indicate that the data complies with project specifications (maximum root mean square vertical offset - 0.20 meters). Please see the lidar QC report and lidar delivery report for statistics from vertical accuracy analysis. Lineage: Process_Step: Process_Description: Data acquisition and processing - This lidar dataset was collected and processed by WSI and their survey subcontractor, McClintock Land Associates (October 21-25, 2012). WSI has provided a delivery report which outlines in detail their data acquisition procedures, processing methods, and results of all accuracy assessments. The delivery report is available on the citation page for this publication. Process_Date: 2012 Process_Step: Process_Description: Quality control - WSI submitted the data to the State of Oregon Department of Geology and Mineral Industries (DOGAMI) for independent quality control analysis. After addressing any concerns from DOGAMI, WSI submitted the revised data set to DGGS along with a technical report describing details about the lidar acquisition, accuracy, and quality. DOGAMI also provided a separate report summarizing their methodologies and the results of quality control checks. Process_Date: 2012 Process_Step: Process_Description: Point-cloud data - all returns - classified - Lidar data points were classified (ASPRS standard) through automated point processing algorithms and manual inspection. Process_Date: 2012 Process_Step: Process_Description: Point-cloud data - ground returns - classified - Lidar data points that were classified as "ground" were extracted to create the ground point data file. Process_Date: 2012 Process_Step: Process_Description: LAS index file - Polygons were generated to depict the point cloud (LAS) bin numbering scheme. Process_Date: 2012 Process_Step: Process_Description: Raster index - Polygons were generated to depict the raster file boundaries. Process_Date: 2012 Process_Step: Process_Description: Hydro-flattened waterbody polygons - Automated and manual detection and adjustment techniques were used to identify boundaries (breaklines) and water levels of lakes, canals and rivers. Process_Date: 2012 Process_Step: Process_Description: Bare-earth digital terrain models - The bare-earth models were derived from the "point-cloud data - ground returns - classified" LAS files using a TIN interpolation. Waterbody polygons were incorporated into the final model and enforced as hard breaklines. The resultant image was exported to a raster format. Process_Date: 2012 Process_Step: Process_Description: Highest-hit digital surface models - The highest-hit models were derived from the "point-cloud data - all returns - classified" LAS files (noise and withheld classes were excluded) using a TIN interpolation. Waterbody polygons were incorporated into the final model and enforced as hard breaklines. The resultant image was exported to a raster format. Process_Date: 2012 Process_Step: Process_Description: Vegetation digital surface models - The vegetation models were derived from the "point-cloud data - all returns - classified" LAS files (buildings, human-made structures, noise, and withheld classes were excluded) using a TIN interpolation. Waterbody polygons were incorporated into the final model and enforced as hard breaklines. The resultant image was exported to a raster format. Process_Date: 2012 Process_Step: Process_Description: Lidar intensity images - The lidar intensity values of ground points were symbolized (0-255 grayscale) according to their relative intensity values. The resultant image was exported to a raster format. Process_Date: 2012 Process_Step: Process_Description: Hillshade images - Hillshade images were created from the bare-earth models using functionality in GIS software. Process_Date: 2012 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: 0.000001 Ordinate_Resolution: 0.000001 Planar_Distance_Units: meters Planar_Coordinate_Layer_Name: Point-cloud data - all returns - classified 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: 0.000001 Ordinate_Resolution: 0.000001 Planar_Distance_Units: meters Planar_Coordinate_Layer_Name: Point-cloud data - ground returns - classified 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: 0.000001 Ordinate_Resolution: 0.000001 Planar_Distance_Units: meters Planar_Coordinate_Layer_Name: LAS index file 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: 0.000001 Ordinate_Resolution: 0.000001 Planar_Distance_Units: meters Planar_Coordinate_Layer_Name: Raster index 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: 0.000001 Ordinate_Resolution: 0.000001 Planar_Distance_Units: meters Planar_Coordinate_Layer_Name: Hydro-flattened waterbody polygons (includes lakes, canals and rivers) 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: 0.000001 Ordinate_Resolution: 0.000001 Planar_Distance_Units: meters Planar_Coordinate_Layer_Name: Bare-earth digital terrain models 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: 0.000001 Ordinate_Resolution: 0.000001 Planar_Distance_Units: meters Planar_Coordinate_Layer_Name: Highest-hit digital surface models 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: 0.000001 Ordinate_Resolution: 0.000001 Planar_Distance_Units: meters Planar_Coordinate_Layer_Name: Vegetation digital surface models 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: 0.000001 Ordinate_Resolution: 0.000001 Planar_Distance_Units: meters Planar_Coordinate_Layer_Name: Lidar intensity images 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: 0.000001 Ordinate_Resolution: 0.000001 Planar_Distance_Units: meters Planar_Coordinate_Layer_Name: Hillshade images Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1983 Ellipsoid_Name: North American Datum of 1983 Semi-major_Axis: 6378137 Denominator_of_Flattening_Ratio: 298.257222101 Vertical_Coordinate_System_Definition: Altitude_System_Definition: Altitude_Datum_Name: North American Vertical Datum of 1988 Altitude_Resolution: 0.0000001 Altitude_Distance_Units: meters Altitude_Encoding_Method: Attribute values Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: all_points Entity_Type_Definition: Data type: Point-cloud data - all returns - classified; Description: Classified (ASPRS standard) lidar attributes for all returns; File format: LAS v 1.2 Entity_Type_Definition_Source: Watershed Sciences, Inc. Entity_Attribute_Layer_Name: Point-cloud data - all returns - classified Detailed_Description: Entity_Type: Entity_Type_Label: ground_points Entity_Type_Definition: Data type: Point-cloud data - ground returns - classified; Description: Classified (ASPRS standard) lidar attributes for ground returns; File format: LAS v 1.2 Entity_Type_Definition_Source: Watershed Sciences, Inc. Entity_Attribute_Layer_Name: Point-cloud data - ground returns - classified Detailed_Description: Entity_Type: Entity_Type_Label: las_index Entity_Type_Definition: Data type: LAS index; Description: Vector data which serves as the index illustrating the spatial location of point cloud (LAS) bin delineation; File format: Shapefile Entity_Type_Definition_Source: Watershed Sciences, Inc. Entity_Attribute_Layer_Name: LAS index Attribute: Attribute_Label: LAS_ID Attribute_Definition: Bin identification Attribute_Definition_Source: Watershed Sciences, Inc. Attribute_Domain_Values: Unrepresentable_Domain: Sequential alpha numeric values that were automatically generated to uniquely identify each LAS bin Detailed_Description: Entity_Type: Entity_Type_Label: raster_index Entity_Type_Definition: Data type: Raster index; Description: Vector data which displays the raster file boundaries; File format: Shapefile Entity_Type_Definition_Source: Watershed Sciences, Inc. Entity_Attribute_Layer_Name: Raster index Attribute: Attribute_Label: DEM_ID Attribute_Definition: Raster file identifier Attribute_Definition_Source: Watershed Sciences, Inc., Alaska Division of Geological & Geophysical Surveys, USGS Attribute_Domain_Values: Unrepresentable_Domain: Project boundaries and encompassing USGS 1:63360 quadrangles define the extent of each raster file. USGS quadrangle names (case may vary) are used in this file and throughout the publication to indicate the spatial location of individual raster files. Detailed_Description: Entity_Type: Entity_Type_Label: water Entity_Type_Definition: Data type: Hydro-flattened waterbody polygons (includes lakes, canals and rivers); Description: Vector data depicting water bodies; File format: Shapefile Entity_Type_Definition_Source: Watershed Sciences, Inc. Entity_Attribute_Layer_Name: Hydro-flattened waterbody polygons (includes lakes, canals and rivers) Attribute: Attribute_Label: Z Attribute_Definition: Elevation (meters above sea level) Attribute_Definition_Source: Watershed Sciences, Inc. Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 642.97 Attribute_Units_of_Measure: meters above sea level Attribute: Attribute_Label: Attribute Attribute_Definition: type or name of waterbody Attribute_Definition_Source: Watershed Sciences, Inc. Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Island in River Enumerated_Domain_Value_Definition: polygon which displays the extent and location of an island in a river Enumerated_Domain_Value_Definition_Source: Watershed Sciences, Inc. Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Lake Enumerated_Domain_Value_Definition: polygon which displays the extent and location of a lake Enumerated_Domain_Value_Definition_Source: Watershed Sciences, Inc. Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Passage Canal Enumerated_Domain_Value_Definition: polygon which displays the extent and location of Passage Canal Enumerated_Domain_Value_Definition_Source: Watershed Sciences, Inc. Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: River Enumerated_Domain_Value_Definition: polygon which displays the extent and location of a river Enumerated_Domain_Value_Definition_Source: Watershed Sciences, Inc. Detailed_Description: Entity_Type: Entity_Type_Label: be Entity_Type_Definition: Data type: Bare-earth digital terrain models; Description: A model depicting the earth's surface with all vegetation and human-made structures removed; File format: Esri GRID Entity_Type_Definition_Source: Watershed Sciences, Inc. Entity_Attribute_Layer_Name: Bare-earth digital terrain models Detailed_Description: Entity_Type: Entity_Type_Label: hh Entity_Type_Definition: Data type: Highest-hit digital surface models; Description: A model depicting the earth's surface with all vegetation and human-made structures included; File format: Esri GRID Entity_Type_Definition_Source: Watershed Sciences, Inc. Entity_Attribute_Layer_Name: Highest-hit digital surface models Detailed_Description: Entity_Type: Entity_Type_Label: veg Entity_Type_Definition: Data type: Vegetation digital surface models; Description: A model depicting the above-ground height of the vegetation; File format: Esri GRID Entity_Type_Definition_Source: Watershed Sciences, Inc. Entity_Attribute_Layer_Name: Vegetation digital surface models Detailed_Description: Entity_Type: Entity_Type_Label: in Entity_Type_Definition: Data type: Lidar intensity images; Description: A grayscale image, similar to an orthophoto, which displays 0-255 grayscale values according to the relative reflectivity (based on lidar return intensity) of objects on the ground; File format: GeoTIFF Entity_Type_Definition_Source: Watershed Sciences, Inc. Entity_Attribute_Layer_Name: Lidar intensity images Detailed_Description: Entity_Type: Entity_Type_Label: hs Entity_Type_Definition: Data type: Hillshade images; Description: A grayscale image model created from the bare-earth digital elevation models. It is meant to mimic the hypothetical illumination of the surface according to a specified azimuth and altitude for the sun; File format: GeoTIFF Entity_Type_Definition_Source: Alaska Division of Geological & Geophysical Surveys (DGGS) Entity_Attribute_Layer_Name: Hillshade images Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: Alaska Division of Geological & Geophysical Surveys 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 Contact_Instructions: Please view our website (http://www.dggs.alaska.gov) for the latest information on available data. Please contact us using the e-mail address provided above when possible. Resource_Description: RDF 2013-3 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: Shapefiles, LAS files, Esri GRID files, and GeoTIFF files Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://dx.doi.org/10.14509/24976 Fees: Free download Metadata_Reference_Information: Metadata_Date: 20130618 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: 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 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