Identification_Information: Citation: Citation_Information: Originator: Hickman, P.J. Originator: Suleimani, E.N. Originator: Nicolsky, D.J. Publication_Date: 2012 Title: Digital elevation model of Sitka Harbor and the city of Sitka, Alaska: Procedures, data sources, and quality assessment Geospatial_Data_Presentation_Form: document, raster digital data Series_Information: Series_Name: Miscellaneous Publication Issue_Identification: MP 144 Publication_Information: Publication_Place: Fairbanks, AK, USA Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 38 p. Online_Linkage: http://dx.doi.org/10.14509/23964 Description: Abstract: The 0.53-second Sitka Alaska Digital Elevation Model provides bathymetric and topographic data in ASCII raster format of 0.53-second resolution in geographic coordinates. Purpose: This grid was constructed for use in tsunami inundation modeling. Supplemental_Information: This metadata file provides a general overview of the DEM parameters and methodology used to create it. See the accompanying text report for more information. 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: >sitka-dem: bathymetric and topographic data in ASCII raster format >border: outline shape of the study area Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2011 Currentness_Reference: ground condition Status: Progress: Planned Maintenance_and_Update_Frequency: As needed Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -135.520074 East_Bounding_Coordinate: -135.210000 North_Bounding_Coordinate: 57.150000 South_Bounding_Coordinate: 57.019926 Keywords: Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: geoscientificInformation Theme: Theme_Keyword_Thesaurus: Alaska Division of Geological & Geophysical Surveys Theme_Keyword: Raster Image Theme_Keyword: Topography Theme_Keyword: Tsunami Theme_Keyword: Bathymetry Theme_Keyword: Digital Elevation Model Place: Place_Keyword_Thesaurus: Alaska Division of Geological & Geophysical Surveys Place_Keyword: Alaska, State of Place_Keyword: Southeast Alaska Place_Keyword: City and Borough of Sitka Place_Keyword: Sitka Sound Place_Keyword: Baranof Island Place_Keyword: Sitka Place_Keyword: Japonski Island 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: This grid was developed through funding from the National Tsunami Hazard Mitigation Program. Native_Data_Set_Environment: Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcGIS 10.0.0.2414 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: The accuracy of this elevation grid is dependent on the accuracy of its source data. These sources include NASA SRTM and ASTER DEMs; UAF topographic DEMs, NOS hydrographic surveys and shoreline vectors; and USACE survey data. The primary limiting factors include the scale, age, and resolution of the surveys. A significant amount of quality control was performed on the grid, using initial data points and other sources for comparison. Logical_Consistency_Report: Each dataset has undergone a stringent quality control procedure from their respective originators. The developed grid was compared with initial sources, other source control data, and corresponding data between datasets to verify accuracy. All values both topographic and bathymetric had to be converted to a common vertical datum. The original topo data was referenced in Geoid EGM96 which is equivalent to Mean Sea Level (MSL), but had to be converted to the Mean Higher High Water (MHHW) tidal datum to provide a smooth transition at the coastline. Completeness_Report: Errant data points were removed from the various sources before processing the grid. The final grid was visually and statistically inspected for completeness using ArcGIS. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: The horizontal accuracy of the grid is expressed as an estimated root mean square error (RMSE). The estimate of the RMSE is based on horizontal accuracy tests of the source data which are selected as equal to or less than the intended horizontal RMSE error of the grid. Horizontal positioning of the various source points were compared with each other to verify grid accuracy. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: Bathymetry - The maximum, minimum and mean of the difference between the depth value of all source hydrographic survey data-points and the corresponding DEM value is used to assess the bathymetric vertical accuracy of the grid.It accounts for surface interpolation errors. The accuracy of hydrographic survey data-points are within 2% of depth (+/- 25.0 meters, mean = -0.02 meter). Topography - The maximum, minimum and mean difference between the elevation value for each of 12,172 Alaska Dept. of Transportation and Public Facilities survey control monuments and the corresponding DEM value is used to assess the topographic vertical accuracy of the grid (+/- 10.0 meters, mean = 0.14 meter). Lineage: Source_Information: Source_Citation: Citation_Information: Originator: NOAA National Ocean Service, Office of Coast Survey Publication_Date: 2003 Title: NOS multibeam hydrographic survey H11117 Geospatial_Data_Presentation_Form: XYZ Publication_Information: Publication_Place: Silver Spring, Maryland, USA Publisher: NOAA National Ocean Service, Office of Coast Survey Online_Linkage: http://www.ngdc.noaa.gov/nndc/struts/results?op_0=eq&v_0=H11117&t=101523&s=3&d=5&d=8&d=23&d=10&d=24&d=11&d=9&d=12&d=13&d=14&d=15&d=16&d=17&d=18&d=20&d=21&d=19&no_data=suppress Source_Scale_Denominator: 10000 Type_of_Source_Media: electronic mail system Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20030523 Ending_Date: 20030628 Source_Currentness_Reference: Date Accessed Source_Citation_Abbreviation: NOAA National Ocean Service, Office of Coast Survey, 2003 Source_Contribution: Bathymetric data-points Source_Information: Source_Citation: Citation_Information: Originator: NOAA National Ocean Service, Office of Coast Survey Publication_Date: 20060824 Title: NOS multibeam hydrographic survey H11118 Geospatial_Data_Presentation_Form: XYZ Publication_Information: Publication_Place: Silver Spring, Maryland, USA Publisher: NOAA National Ocean Service, Office of Coast Survey Online_Linkage: http://www.ngdc.noaa.gov/nndc/struts/results?op_0=eq&v_0=H11118&t=101523&s=3&d=5&d=8&d=23&d=10&d=24&d=11&d=9&d=12&d=13&d=14&d=15&d=16&d=17&d=18&d=20&d=21&d=19&no_data=suppress Source_Scale_Denominator: 10000 Type_of_Source_Media: electronic mail system Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20040508 Ending_Date: 20040610 Source_Currentness_Reference: Date Accessed Source_Citation_Abbreviation: NOAA National Ocean Service, Office of Coast Survey, 20060824 Source_Contribution: Bathymetric data-points Source_Information: Source_Citation: Citation_Information: Originator: NOAA National Ocean Service, Office of Coast Survey Publication_Date: 20061024 Title: NOS multibeam hydrographic survey H11119 Geospatial_Data_Presentation_Form: XYZ Publication_Information: Publication_Place: Silver Spring, Maryland, USA Publisher: NOAA National Ocean Service, Office of Coast Survey Online_Linkage: http://www.ngdc.noaa.gov/nndc/struts/results?op_0=eq&v_0=H11119&t=101523&s=3&d=5&d=8&d=23&d=10&d=24&d=11&d=9&d=12&d=13&d=14&d=15&d=16&d=17&d=18&d=20&d=21&d=19&no_data=suppress Source_Scale_Denominator: 10000 Type_of_Source_Media: electronic mail system Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20040527 Ending_Date: 20040610 Source_Currentness_Reference: Date Accessed Source_Citation_Abbreviation: NOAA National Ocean Service, Office of Coast Survey, 20061024 Source_Contribution: Bathymetric data-points Source_Information: Source_Citation: Citation_Information: Originator: NOAA National Ocean Service, Office of Coast Survey Publication_Date: 20061005 Title: NOS multibeam hydrographic survey H11120 Geospatial_Data_Presentation_Form: XYZ Publication_Information: Publication_Place: Silver Spring, Maryland, USA Publisher: NOAA National Ocean Service, Office of Coast Survey Online_Linkage: http://www.ngdc.noaa.gov/nndc/struts/results?op_0=eq&v_0=H11120&t=101523&s=3&d=5&d=8&d=23&d=10&d=24&d=11&d=9&d=12&d=13&d=14&d=15&d=16&d=17&d=18&d=20&d=21&d=19&no_data=suppress Source_Scale_Denominator: 10000 Type_of_Source_Media: electronic mail system Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20030506 Ending_Date: 20030626 Source_Currentness_Reference: Date Accessed Source_Citation_Abbreviation: NOAA National Ocean Service, Office of Coast Survey, 20061005 Source_Contribution: Bathymetric data-points Source_Information: Source_Citation: Citation_Information: Originator: NOAA National Ocean Service, Office of Coast Survey Publication_Date: 20070103 Title: NOS multibeam hydrographic survey H11121 Geospatial_Data_Presentation_Form: XYZ Publication_Information: Publication_Place: Silver Spring, Maryland, USA Publisher: NOAA National Ocean Service, Office of Coast Survey Online_Linkage: http://www.ngdc.noaa.gov/nndc/struts/results?op_0=eq&v_0=H11121&t=101523&s=3&d=5&d=8&d=23&d=10&d=24&d=11&d=9&d=12&d=13&d=14&d=15&d=16&d=17&d=18&d=20&d=21&d=19&no_data=suppress Source_Scale_Denominator: 5000 Type_of_Source_Media: electronic mail system Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20020429 Ending_Date: 20020510 Source_Currentness_Reference: Date Accessed Source_Citation_Abbreviation: NOAA National Ocean Service, Office of Coast Survey, 20070103 Source_Contribution: Bathymetric data-points Source_Information: Source_Citation: Citation_Information: Originator: NOAA National Ocean Service, Office of Coast Survey Publication_Date: 20090416 Title: NOS multibeam hydrographic survey H11122 Geospatial_Data_Presentation_Form: XYZ Publication_Information: Publication_Place: Silver Spring, Maryland, USA Publisher: NOAA National Ocean Service, Office of Coast Survey Online_Linkage: http://www.ngdc.noaa.gov/nndc/struts/results?op_0=eq&v_0=H11122&t=101523&s=3&d=5&d=8&d=23&d=10&d=24&d=11&d=9&d=12&d=13&d=14&d=15&d=16&d=17&d=18&d=20&d=21&d=19&no_data=suppress Source_Scale_Denominator: 10000 Type_of_Source_Media: electronic mail system Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20050504 Ending_Date: 20050616 Source_Currentness_Reference: Date Accessed Source_Citation_Abbreviation: NOAA National Ocean Service, Office of Coast Survey, 20090416 Source_Contribution: Bathymetric data-points Source_Information: Source_Citation: Citation_Information: Originator: NOAA National Ocean Service, Office of Coast Survey Publication_Date: 20070906 Title: NOS BAG multibeam hydrographic survey H11123 Geospatial_Data_Presentation_Form: XYZ Publication_Information: Publication_Place: Silver Spring, Maryland, USA Publisher: NOAA National Ocean Service, Office of Coast Survey Online_Linkage: http://www.ngdc.noaa.gov/nndc/struts/results?op_0=eq&v_0=H11123&t=101523&s=3&d=5&d=8&d=23&d=10&d=24&d=11&d=9&d=12&d=13&d=14&d=15&d=16&d=17&d=18&d=20&d=21&d=19&no_data=suppress Source_Scale_Denominator: 10000 Type_of_Source_Media: electronic mail system Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20041024 Ending_Date: 20041028 Source_Currentness_Reference: Date Accessed Source_Citation_Abbreviation: NOAA National Ocean Service, Office of Coast Survey, 20070906 Source_Contribution: Bathymetric data-points Source_Information: Source_Citation: Citation_Information: Originator: NOAA National Ocean Service, Office of Coast Survey Publication_Date: 20080331 Title: NOS BAG multibeam hydrographic survey H11124 Geospatial_Data_Presentation_Form: XYZ Publication_Information: Publication_Place: Silver Spring, Maryland, USA Publisher: NOAA National Ocean Service, Office of Coast Survey Online_Linkage: http://www.ngdc.noaa.gov/nndc/struts/results?op_0=eq&v_0=H11124&t=101523&s=3&d=5&d=8&d=23&d=10&d=24&d=11&d=9&d=12&d=13&d=14&d=15&d=16&d=17&d=18&d=20&d=21&d=19&no_data=suppress Source_Scale_Denominator: 10000 Type_of_Source_Media: electronic mail system Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20041026 Ending_Date: 20041029 Source_Currentness_Reference: Date Accessed Source_Citation_Abbreviation: NOAA National Ocean Service, Office of Coast Survey, 20080331 Source_Contribution: Bathymetric data-points Source_Information: Source_Citation: Citation_Information: Originator: NOAA National Ocean Service, Office of Coast Survey Publication_Date: 20060503 Title: NOS BAG multibeam hydrographic survey H11130 Geospatial_Data_Presentation_Form: XYZ Publication_Information: Publication_Place: Silver Spring, Maryland, USA Publisher: NOAA National Ocean Service, Office of Coast Survey Online_Linkage: http://www.ngdc.noaa.gov/nndc/struts/results?op_0=eq&v_0=H11130&t=101523&s=3&d=5&d=8&d=23&d=10&d=24&d=11&d=9&d=12&d=13&d=14&d=15&d=16&d=17&d=18&d=20&d=21&d=19&no_data=suppress Source_Scale_Denominator: 10000 Type_of_Source_Media: electronic mail system Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20041027 Ending_Date: 20041028 Source_Currentness_Reference: Date Accessed Source_Citation_Abbreviation: NOAA National Ocean Service, Office of Coast Survey, 20060503 Source_Contribution: Bathymetric data-points Source_Information: Source_Citation: Citation_Information: Originator: NOAA National Ocean Service, Office of Coast Survey Publication_Date: 20090429 Title: NOS BAG multibeam hydrographic survey H11271 Geospatial_Data_Presentation_Form: XYZ Publication_Information: Publication_Place: Silver Spring, Maryland, USA Publisher: NOAA National Ocean Service, Office of Coast Survey Online_Linkage: http://www.ngdc.noaa.gov/nndc/struts/results?op_0=eq&v_0=H11271&t=101523&s=3&d=5&d=8&d=23&d=10&d=24&d=11&d=9&d=12&d=13&d=14&d=15&d=16&d=17&d=18&d=20&d=21&d=19&no_data=suppress Source_Scale_Denominator: 10000 Type_of_Source_Media: electronic mail system Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20040605 Ending_Date: 20050504 Source_Currentness_Reference: Date Accessed Source_Citation_Abbreviation: NOAA National Ocean Service, Office of Coast Survey, 20090429 Source_Contribution: Bathymetric data-points Source_Information: Source_Citation: Citation_Information: Originator: NOAA National Ocean Service, Office of Coast Survey Publication_Date: 20070212 Title: NOS multibeam hydrographic survey H11354 Geospatial_Data_Presentation_Form: XYZ Publication_Information: Publication_Place: Silver Spring, Maryland, USA Publisher: NOAA National Ocean Service, Office of Coast Survey Online_Linkage: http://www.ngdc.noaa.gov/nndc/struts/results?op_0=eq&v_0=H11354&t=101523&s=3&d=5&d=8&d=23&d=10&d=24&d=11&d=9&d=12&d=13&d=14&d=15&d=16&d=17&d=18&d=20&d=21&d=19&no_data=suppress Source_Scale_Denominator: 10000 Type_of_Source_Media: electronic mail system Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20040726 Ending_Date: 20040915 Source_Currentness_Reference: Date Accessed Source_Citation_Abbreviation: NOAA National Ocean Service, Office of Coast Survey, 20070212 Source_Contribution: Bathymetric data-points Source_Information: Source_Citation: Citation_Information: Originator: U.S. Army Corps of Engineers Alaska District Publication_Date: 2001 Title: Western Channel Hydrographic Survey for Sitka Geospatial_Data_Presentation_Form: XYZ Publication_Information: Publication_Place: Anchorage, Alaska, USA Publisher: USACE Alaska District Online_Linkage: http://www.poa.usace.army.mil/en/hydro/Sitka_Western_Channel/western_channel__2001_8ft_mapper_grid_average_r.xyz Type_of_Source_Media: ftp Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2001 Source_Currentness_Reference: Date Accessed Source_Citation_Abbreviation: U.S. Army Corps of Engineers Alaska District, 2001 Source_Contribution: Bathymetric data values Source_Information: Source_Citation: Citation_Information: Originator: U.S. Army Corps of Engineers Alaska District Publication_Date: 2005 Title: Crescent Harbor Hydrographic Survey for Sitka Geospatial_Data_Presentation_Form: XYZ Publication_Information: Publication_Place: Anchorage, Alaska, USA Publisher: USACE Alaska District Online_Linkage: http://www.poa.usace.army.mil/en/hydro/Sitka%20Crescent%20Bay%20Harbor/2005/crescent-ptfile.txt Type_of_Source_Media: ftp Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2005 Source_Currentness_Reference: Date Accessed Source_Citation_Abbreviation: U.S. Army Corps of Engineers Alaska District, 2005a Source_Contribution: Bathymetric data values Source_Information: Source_Citation: Citation_Information: Originator: U.S. Army Corps of Engineers Alaska District Publication_Date: 2005 Title: Channel Rock Breakwaters Hydrographic Survey for Sitka Geospatial_Data_Presentation_Form: XYZ Publication_Information: Publication_Place: Anchorage, Alaska, USA Publisher: USACE Alaska District Online_Linkage: http://www.poa.usace.army.mil/en/hydro/Sitka%20Channel%20Rock%20Breakwaters/2005/CRB-ptfile.txt Type_of_Source_Media: ftp Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2005 Source_Currentness_Reference: Date Accessed Source_Citation_Abbreviation: U.S. Army Corps of Engineers Alaska District, 2005b Source_Contribution: Bathymetric data values Source_Information: Source_Citation: Citation_Information: Originator: U.S. Army Corps of Engineers Alaska District Publication_Date: 2008 Title: Sitka Channel Rock Breakwaters Hydrographic Survey Geospatial_Data_Presentation_Form: XYZ Publication_Information: Publication_Place: Anchorage, Alaska, USA Publisher: USACE Alaska District Online_Linkage: http://www.poa.usace.army.mil/en/hydro/Sitka%20Channel%20Rock%20Breakwaters/2008/sitka%20bathy_5ft%20sort%20reformatted_use.xyz Type_of_Source_Media: ftp Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2008 Source_Currentness_Reference: Date Accessed Source_Citation_Abbreviation: U.S. Army Corps of Engineers Alaska District, 2008 Source_Contribution: Bathymetric data values Source_Information: Source_Citation: Citation_Information: Originator: NOAA National Ocean Service, National Geodetic Survey Publication_Date: 2006 Title: High-resolution vector shoreline, survey control points Geospatial_Data_Presentation_Form: vector digital data Publication_Information: Publication_Place: Silver Spring, Maryland, USA Publisher: NOAA National Ocean Service, National Geodetic Survey Online_Linkage: http://www.ngs.noaa.gov/ Type_of_Source_Media: electronic mail system Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2006 Source_Currentness_Reference: Date Accessed Source_Citation_Abbreviation: NOAA National Ocean Service, National Geodetic Survey, 2006 Source_Contribution: coastline and control data Source_Information: Source_Citation: Citation_Information: Originator: NOAA National Ocean Service, Center for Operational Oceanographic Products and Services Publication_Date: 20030421 Title: Tidal Benchmark Sheet for 9451600 Geospatial_Data_Presentation_Form: document Publication_Information: Publication_Place: Silver Spring, Maryland, USA Publisher: NOAA National Ocean Service, CO-OPS Online_Linkage: http://tidesandcurrents.noaa.gov/ Type_of_Source_Media: online Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 19830101 Ending_Date: 20011231 Source_Currentness_Reference: Date Accessed Source_Citation_Abbreviation: NOAA National Ocean Service, Center for Operational Oceanographic Products and Services, 20030421 Source_Contribution: control data Source_Information: Source_Citation: Citation_Information: Originator: Geographic Information Network of Alaska - University of Alaska Fairbanks Publication_Date: 2010 Title: Shuttle Radar Topography Mission v2 Web Coverage Service Geospatial_Data_Presentation_Form: raster digital data Publication_Information: Publication_Place: Fairbanks, Alaska, USA Publisher: GINA Online_Linkage: http://wms.alaskamapped.org/wcs Type_of_Source_Media: online wcs Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2010 Source_Currentness_Reference: Date Accessed Source_Citation_Abbreviation: Geographic Information Network of Alaska - University of Alaska Fairbanks, 2010a Source_Contribution: topographic data values Source_Information: Source_Citation: Citation_Information: Originator: Geographic Information Network of Alaska - University of Alaska Fairbanks Publication_Date: 2010 Title: ASTER GDEM (Alaska) Web Coverage Service Geospatial_Data_Presentation_Form: raster digital data Publication_Information: Publication_Place: Fairbanks, Alaska, USA Publisher: GINA Online_Linkage: http://wms.alaskamapped.org/wcs Type_of_Source_Media: online wcs Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2010 Source_Currentness_Reference: Date Accessed Source_Citation_Abbreviation: Geographic Information Network of Alaska - University of Alaska Fairbanks, 2010b Source_Contribution: topographic data values Source_Information: Source_Citation: Citation_Information: Originator: Geophysical Institute, University of Alaska Fairbanks Publication_Date: Unpublished material Title: Topographic DEM for Sitka Geospatial_Data_Presentation_Form: raster digital data Publication_Information: Publication_Place: Fairbanks, Alaska, USA Publisher: Geophysical Institute, University of Alaska Fairbanks Online_Linkage: http://www.gi.alaska.edu/ Other_Citation_Details: Topographic data from September 2003 survey conducted by Delta Aerial Surveys LTD Type_of_Source_Media: ftp Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2004 Source_Currentness_Reference: Date Accessed Source_Citation_Abbreviation: Geophysical Institute, University of Alaska Fairbanks, Unpublished material Source_Contribution: detailed coastline, control, topographic data values Process_Step: Process_Description: Each raw data source was converted into ESRI ArcGIS format. The resulting files were converted and adjusted to predetermined coordinate system (Geographic), horizontal datum (WGS84), and vertical datum (MHHW - Mean Higher High Water). A polyline shapefile was extracted from the Delta Aerial Surveys, Inc. Digital Terrain Model (DTM) Triangulated Irregular Network (TIN). The final coastline is an aggregation of the TIN 0.00 elevation MHHW line, the USFWS Alaska coastline of islands in Sitka Sound missed by the TIN, and manual digitization of elevation data-points of features like breakwaters and islands of importance where the USFWS (U.S. Fish & Wildlife Service) coastline was determined to be inappropriate. We generated a point shapefile dividing the coastline polyline shapefile at 1 meter intervals. We removed overlap between hydrographic surveys retaining only the most current and highest resolution data points. We used these non-overlapping data-points in GMT to generate a bathymetric pre-surface designed to fill in the inter-tidal gap between topographic data and bathymetric data. We removed all pre-surface data-points that overlapped hydrographic survey data-points to retain the smallest possible mean difference between original hydrographic survey soundings and the final DEM (Digital Elevation Model). We used the Delta Aerial Surveys, Ltd. DTM point cloud as the primary source of topographic data. We derived topographic data-points from SRTM (Shuttle Radar Topography Mission) and ASTER (Advanced Spaceborne Thermal Emission and Reflection Radiometer) where the Delta Areal Surveys DTM point cloud ended. Based on a lack of confidence in the SRTM data of Japonski Island, we generated a DEM for Japonski Island using elevation contour lines and edge-of-pavement lines along with all available Delta Aerial Surveys data points and SRTM data points where no other data exists. Lastly, we manually digitized elevation data points of the Sitka Harbor Western Anchorage Breakwaters to ensure that they are correctly represented in the final DEM. We used the coastline, bathymetric and topographic point shapefiles to generate comma-delimited text files containing one line of x,y,z coordinates for each data-point. An 0.53 arc-second grid was then generated using the MB-Systems mbm-grid command. The data were assessed for quality and anomalies were removed. The final grid was compared to original hydrographic survey data and documented in the Data_Quality_Information of this metadata. Source_Used_Citation_Abbreviation: NOAA National Ocean Service, Office of Coast Survey, 2003 Source_Used_Citation_Abbreviation: NOAA National Ocean Service, Office of Coast Survey, 20060824 Source_Used_Citation_Abbreviation: NOAA National Ocean Service, Office of Coast Survey, 20061024 Source_Used_Citation_Abbreviation: NOAA National Ocean Service, Office of Coast Survey, 20061005 Source_Used_Citation_Abbreviation: NOAA National Ocean Service, Office of Coast Survey, 20070103 Source_Used_Citation_Abbreviation: NOAA National Ocean Service, Office of Coast Survey, 20090416 Source_Used_Citation_Abbreviation: NOAA National Ocean Service, Office of Coast Survey, 20070906 Source_Used_Citation_Abbreviation: NOAA National Ocean Service, Office of Coast Survey, 20080331 Source_Used_Citation_Abbreviation: NOAA National Ocean Service, Office of Coast Survey, 20060503 Source_Used_Citation_Abbreviation: NOAA National Ocean Service, Office of Coast Survey, 20090429 Source_Used_Citation_Abbreviation: NOAA National Ocean Service, Office of Coast Survey, 20070212 Source_Used_Citation_Abbreviation: U.S. Army Corps of Engineers Alaska District, 2001 Source_Used_Citation_Abbreviation: U.S. Army Corps of Engineers Alaska District, 2005a Source_Used_Citation_Abbreviation: U.S. Army Corps of Engineers Alaska District, 2005b Source_Used_Citation_Abbreviation: U.S. Army Corps of Engineers Alaska District, 2008 Source_Used_Citation_Abbreviation: NOAA National Ocean Service, National Geodetic Survey, 2006 Source_Used_Citation_Abbreviation: NOAA National Ocean Service, Center for Operational Oceanographic Products and Services, 20030421 Source_Used_Citation_Abbreviation: Geographic Information Network of Alaska - University of Alaska Fairbanks, 2010a Source_Used_Citation_Abbreviation: Geographic Information Network of Alaska - University of Alaska Fairbanks, 2010b Source_Used_Citation_Abbreviation: Geophysical Institute, University of Alaska Fairbanks, Unpublished material Process_Date: 20110510 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: Alaska Earthquake Information Center Contact_Person: Peter Hickman Contact_Address: Address_Type: mailing address Address: 903 Koyukuk Drive, Suite 301, University of Alaska Fairbanks City: Fairbanks State_or_Province: Alaska Postal_Code: 99775-7320 Country: USA Contact_Voice_Telephone: 907-474-7558 Contact_Electronic_Mail_Address: info@gi.alaska.edu Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: raster Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geodetic_Model: Horizontal_Datum_Name: World Geodetic System of 1984 Ellipsoid_Name: World Geodetic System 1984 Semi-major_Axis: 6378137 Denominator_of_Flattening_Ratio: 298.257223563 Vertical_Coordinate_System_Definition: Depth_System_Definition: Depth_Datum_Name: Mean higher high water Depth_Resolution: 1.0 Depth_Distance_Units: meters Depth_Encoding_Method: Explicit depth coordinate included with horizontal coordinates Altitude_System_Definition: Altitude_Datum_Name: Mean higher high water Altitude_Resolution: 1.0 Altitude_Distance_Units: meters Altitude_Encoding_Method: Explicit elevation coordinate included with horizontal coordinates Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Attribute_Layer_Name: sitka-dem Entity_Type_Label: mp-144-sitka-dem Entity_Type_Definition: bathymetric and topographic data in ASCII raster format Entity_Type_Definition_Source: Alaska Earthquake Information Center Detailed_Description: Entity_Type: Entity_Attribute_Layer_Name: border Entity_Type_Label: mp144-border Entity_Type_Definition: shapefile outline of the study area Entity_Type_Definition_Source: Alaska Earthquake Information Center 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: MP 144 Distribution_Liability: The State of Alaska makes no express or implied warranties (including warranties of merchantability and fitness) with respect to the character, function, or capabilities of the electronic services 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, any failure thereof, or otherwise, and 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: Raster Dataset Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://dx.doi.org/10.14509/23964 Fees: Free download Metadata_Reference_Information: Metadata_Date: 20120723 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