Metadata: Identification_Information: Citation: Citation_Information: Originator: Alicia F. Balster-Gee Originator: Daniel S. Brothers Originator: David P. Finlayson Originator: Lee Liberty Originator: Peter Dartnell Originator: Gerry A. Hatcher Originator: Peter J. Haeussler Originator: Mike Byerly Publication_Date: 2019 Title: High-resolution multibeam bathymetry data collected southwest of Chenega Island, Alaska during field activity 2014-622-FA Geospatial_Data_Presentation_Form: TIFF Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/P9K1YQ35 Publication_Information: Publication_Place: Pacific Coastal and Marine Science Center, Santa Cruz, California Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.5066/P9K1YQ35 Online_Linkage: https://www.sciencebase.gov/catalog/file/get/5c5cc659e4b0fe48cb312581 Larger_Work_Citation: Citation_Information: Originator: Alicia F. Balster-Gee Originator: Daniel S. Brothers Originator: David P. Finlayson Originator: Lee Liberty Originator: Peter Dartnell Originator: Gerry A. Hatcher Originator: Peter J. Haeussler Originator: Mike Byerly Publication_Date: 2019 Title: Bathymetry, acoustic backscatter, and minisparker seismic-reflection datasets collected southwest of Montague Island and southwest of Chenega, Alaska during field activity 2014-622-FA Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/P9K1YQ35 Publication_Information: Publication_Place: Pacific Coastal and Marine Science Center, Santa Cruz, CA Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.5066/P9K1YQ35 Description: Abstract: High-resolution multibeam data were collected by the U.S. Geological Survey (USGS) and the Alaska Department of Fish and Game in May of 2014 southwest of Chenega Island, Alaska. Data were collected aboard the Alaska Department of Fish and Game vessel, R/V Solstice, during USGS field activity 2014-622-FA, using a pole mounted 100-kHz Reson 7111 multibeam echosounder. Purpose: This work was funded by the U.S. Geological Survey (USGS) Coastal and Marine Hazards and Resources Program (CMHRP) Marine Geohazards Project and the Alaska Department of Fish and Game (ADFG). The high-resolution bathymetry of bedrock, sediment deposits, and tectonic structure provide geologic information that is essential to hazard assessment, regional sediment management, and coastal and marine spatial planning at Federal, State, and local levels, as well as to future research on the geomorphic, sedimentary, tectonic, and climatic record of southeastern Alaska. These data and information are intended for science researchers, students from elementary through college, policy makers, and the general public. Supplemental_Information: Additional information about the field activities from which these data were derived is available online at: https://cmgds.marine.usgs.gov/fan_info.php?fan=2014-622-FA Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Although this Federal Geographic Data Committee-compliant metadata file is intended to document the data set in nonproprietary form, as well as in Esri format, this metadata file may include some Esri-specific terminology. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20140507 Ending_Date: 20140522 Currentness_Reference: ground condition at time data were collected Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -148.297885 East_Bounding_Coordinate: -147.954768 North_Bounding_Coordinate: 60.336390 South_Bounding_Coordinate: 60.198236 Keywords: Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:5c5cc659e4b0fe48cb312581 Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: geoscientificInformation Theme_Keyword: imageryBaseMapsEarthCover Theme: Theme_Keyword_Thesaurus: Data Categories for Marine Planning Theme_Keyword: Bathymetry and Elevation Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: bathymetry Theme_Keyword: bathymetry measurement Theme_Keyword: sea-floor characteristics Theme_Keyword: geospatial datasets Theme_Keyword: marine geophysics Theme_Keyword: multibeam sonar Theme: Theme_Keyword_Thesaurus: Marine Realms Information Bank (MRIB) keywords Theme_Keyword: seabed Theme_Keyword: acoustic methods Theme_Keyword: mapping Theme_Keyword: geophysics Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: U.S. Geological Survey Theme_Keyword: USGS Theme_Keyword: Coastal and Marine Hazards and Resources Program Theme_Keyword: CMHRP Theme_Keyword: Pacific Coastal and Marine Science Center Theme_Keyword: PCMSC Place: Place_Keyword_Thesaurus: Geographic Names Information System (GNIS) Place_Keyword: State of Alaska Place_Keyword: Pacific Ocean Place_Keyword: Gulf of Alaska Place_Keyword: Prince William Sound Place_Keyword: Chenega Island Place_Keyword: Evans Island Place_Keyword: Dangerous Passage Place_Keyword: Knight Island Passage Place_Keyword: Icy Bay Place_Keyword: Nassau Bay Place_Keyword: Jackpot Bay Place_Keyword: Whale Bay Place_Keyword: Bainbridge Passage Place_Keyword: Port Bainbridge Place: Place_Keyword_Thesaurus: NGA GEOnet Names Server (GNS) Place_Keyword: North Pacific Ocean Access_Constraints: None Use_Constraints: USGS-authored or produced data and information are in the public domain from the U.S. Government and are freely redistributable with proper metadata and source attribution. Please recognize and acknowledge the U.S. Geological Survey as the originator(s) of the dataset and in products derived from these data. This information is not intended for navigation purposes. Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey, Pacific Coastal and Marine Science Center Contact_Person: PCMSC Science Data Coordinator Contact_Address: Address_Type: mailing and physical Address: 2885 Mission Street City: Santa Cruz State_or_Province: CA Postal_Code: 95060 Contact_Voice_Telephone: 831-427-4747 Contact_Electronic_Mail_Address: pcmsc_data@usgs.gov Browse_Graphic: Browse_Graphic_File_Name: https://www.sciencebase.gov/catalog/file/get/ 5c5cc659e4b0fe48cb312581?name=2014-622-FA_Chenega_UTM6N_10m_bathymetry_map.gif&allowOpen=true Browse_Graphic_File_Description: Map showing bathymetric terrain grid southwest of Chenega Island Browse_Graphic_File_Type: GIF Native_Data_Set_Environment: Caris HIPS and SIPS (ver. 9) and ArcMap (ver. 10.3.1) on a Windows 7 computer Cross_Reference: Citation_Information: Originator: Daniel S. Brothers Originator: Peter J. Haeussler Originator: Lee Liberty Originator: David Finlayson Originator: Eric Geist Originator: Keith Labay Originator: Mike Byerly Publication_Date: 2016 Title: A submarine landslide source for the devastating 1964 Chenega tsunami, southern Alaska Other_Citation_Details: Brothers and others, 2016, A submarine landslide source for the devastating 1964 Chenega tsunami, southern Alaska: Earth and Planetary Science Letters, v. 438, p.112-121. Online_Linkage: https://doi.org/10.1016/j.epsl.2016.01.008 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: Data were collected using a 100-kHz Reson 7111 multibeam echosounder with depth resolution of 3cm. Soundings were corrected real-time using inputs from a vehicle motion sensor and corrected for water column sound velocity variations using sound velocity values calculated from CTD casts. Accuracies of final products may be lower due to total propagated uncertainties of the mapping systems, which include sonar system, position and motion compensation system, and navigation, as well as data processing that includes sounding cleaning, gridding, and datum transformations. Logical_Consistency_Report: No formal logical accuracy tests were conducted. Completeness_Report: Dataset is considered complete for the information presented, as described in the abstract. Users are advised to read the rest of the metadata record carefully for additional details. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: The stated accuracy of the Applanix POS-MV post-processed horizontal position is about 0.1 m, with roll and pitch stated accuracies of about 0.02 degrees (https://www.applanix.com/downloads/products/specs/posmv/POS-MV-WaveMaster-II.pdf). Accuracies of final products may be lower due to total propagated uncertainties of the mapping systems, which include sonar system, position and motion compensation system, and navigation, as well as data processing that includes sounding cleaning, gridding, and datum transformations. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: The stated accuracy of the Applanix POS-MV post-processed vertical position is about 0.2 m (https://www.applanix.com/downloads/products/specs/posmv/POS-MV-WaveMaster-II.pdf). Accuracies of final products may be lower due to total propagated uncertainties of the mapping systems, which include sonar system, position and motion compensation system, and navigation, as well as data processing that includes sounding cleaning, gridding, and datum transformations. Lineage: Process_Step: Process_Description: In 2014, the U.S. Geological Survey (USGS), in cooperation with the Alaska Department of Fish and Game (ADFG), mapped offshore the southwest corner of Chenega Island and near Chenega Alaska. A 100-kHz Reson 7111 multibeam echosounder was pole-mounted to the ADFG R/V Solstice, and an Applanix POS-MV (Position and Orientation System for Marine Vessels) was used to position the vessel during data collection where it also accounted for vessel motion such as heave, pitch, and roll. The POS-MV also recorded position and vessel motion parameters for later post-processing. Soundings were corrected real-time using inputs from the POS-MV and corrected for water column sound velocity variations using sound velocity values calculated from CTD casts. Reson 7111 line files were imported into Caris HIPS and SIPS processing software where the data were cleaned for obvious errors and gridded into 10-m resolution bathymetry grids. The grids were exported to ASCIIRaster files in UTM, zone 6, WGS84 coordinates. Process_Date: 20190215 Process_Step: Process_Description: Edits were made to standardize a few of the "None" keywords. Process_Date: 20190620 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Susan A Cochran Contact_Organization: U.S. Geological Survey, Pacific Coastal and Marine Science Center Contact_Address: Address_Type: mailing and physical Address: 2885 Mission St. City: Santa Cruz State_or_Province: CA Postal_Code: 95060 Country: United States Contact_Voice_Telephone: 831-460-7545 Contact_Electronic_Mail_Address: scochran@usgs.gov Process_Step: Process_Description: Edited metadata to add keywords section with USGS persistent identifier as theme keyword. No data were changed. Process_Date: 20201019 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: VeeAnn A. Cross Contact_Position: Marine Geologist Contact_Address: Address_Type: Mailing and Physical Address: 384 Woods Hole Road City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Contact_Voice_Telephone: 508-548-8700 x2251 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: vatnipp@usgs.gov Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Raster Raster_Object_Information: Raster_Object_Type: Grid Cell Row_Count: 1334 Column_Count: 1442 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 6N Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.999600 Longitude_of_Central_Meridian: -147.000000 Latitude_of_Projection_Origin: 0.000000 False_Easting: 500000.000000 False_Northing: 0.000000 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 10.000000 Ordinate_Resolution: 10.000000 Planar_Distance_Units: Meters Geodetic_Model: Horizontal_Datum_Name: D_WGS_1984 Ellipsoid_Name: WGS_1984 Semi-major_Axis: 6378137.000000 Denominator_of_Flattening_Ratio: 298.257224 Vertical_Coordinate_System_Definition: Altitude_System_Definition: Altitude_Datum_Name: Mean Lower Low Water Altitude_Resolution: 0.1 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: Value Entity_Type_Definition: depth relative to Mean Lower Low Water Entity_Type_Definition_Source: Producer defined Overview_Description: Entity_and_Attribute_Overview: 10-m resolution merged Southwest Chenega Island, Gulf of Alaska bathymetry grid was originally archived as a TIFF image with the following attributes. >Cell size = 10.0, 10.0 >Number of rows = 1442 >Number of columns = 1334 >Data type = floating point >Boundary >Xmin = 430930.000000 >Xmax = 444270.000000 >Ymin = 6688860.000000 >Ymax = 6674440.000000 >Statistics >Minimum value = -486.7860107421875 >Maximum value = -21.43099975585938 >Mean = -290.7151654715518 >Standard deviation = 121.7391908518499 >Coordinate system description >Projection UTM >Zone 06 >Datum NAD83 >Vertical Reference MLLW >Units meter Entity_and_Attribute_Detail_Citation: U.S. Geological Survey Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey - ScienceBase Contact_Address: Address_Type: mailing and physical 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: These data are available in TIFF format, including a tiff world file (.tfw), and accompanied by FGDC-compliant metadata and a browse graphic. Distribution_Liability: Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: geoTIFF Format_Version_Number: ArcMap (version 10.3.1) Format_Information_Content: Zip file contains the TIFF (.tif), the tiff world file (.tfw), an XML (.xml) version of the metadata, and a browse graphic. File_Decompression_Technique: zip command in the Unix command line Transfer_Size: 1.91 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://www.sciencebase.gov/catalog/file/get/5c5cc659e4b0fe48cb312581 Network_Resource_Name: https://www.sciencebase.gov/catalog/item/5c5cc659e4b0fe48cb312581 Network_Resource_Name: https://doi.org/10.5066/P9K1YQ35 Access_Instructions: Data can be downloaded using the Network_Resource_Name links. The first link is a direct link to download a zipped file containing all files. The second link points to a page with the geoTIFF, metadata, and browse graphic. The third link points to a landing page for the entire data release. Fees: None. Technical_Prerequisites: The downloadable data file has been compressed with the "zip" command and can be unzipped with WinZip (or other tool) on Windows systems. To utilize these data, the user must have software capable of uncompressing the WinZip file and importing and viewing an Esri ASCIIRaster file. Metadata_Reference_Information: Metadata_Date: 20201019 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey, Pacific Coastal and Marine Science Center Contact_Person: PCMSC Science Data Coordinator Contact_Address: Address_Type: mailing and physical Address: 2885 Mission Street City: Santa Cruz State_or_Province: CA Postal_Code: 95060 Contact_Voice_Telephone: 831-427-4747 Contact_Electronic_Mail_Address: pcmsc_data@usgs.gov Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998