Identification_Information:
  Citation:
    Citation_Information:
      Originator: Glacier Bay Field Station, National Biological Service
      Publication_Date:
      Title: SONIC TAGGED PACIFIC HALIBUT LOCATIONS
      Edition:
      Publication_Information:
        Publication_Place:
        Publisher:
      Other_Citation_Details:
      Online_Linkage: <URL: http://agdcwww.wr.usgs.gov/usgs/brd/pws/>
  Description:
    Abstract: SUMMARY: Represented here are results of studies on the movement patterns of sonically tracked Pacific halibut. These studies were begun as part of an effort to quantify the ecosystem level effects of the commercial harvest of halibut as part of a 10 year study to evaluate the commercial harvest of halibut in Glacier Bay National Park. The studies represented here were initiated to understand home range and movement patterns, territoriality, site fidelity and inter-year site fidelity in Pacific Halibut. Sonic tags were implanted into the body cavities of Pacific halibut. Two tracking methodologies were used; First, search tracking with 18 month sonic-tags on a daily or weekly basis was used to elucidate the movement patterns of specific categories of individuals in detail. Second, a grid search of the entire lower bay was conducted with 3 year tags on a bimonthly basis to elucidate long term patterns of site fidelity and to understand the movement patterns of individuals who moved over wide areas. ABSTRACT: This database contains locational data on sonic tagged Pacific halibut. It contains evidence for a high degree of site fidelity, existence of a home range, territoriality (i.e. exclusivity of home ranges), inter-year site fidelity and ontogenetic changes in movement patterns. The data was collected by internal implantation of 35 khz sonic tags into the body cavity between the gonads and stomach. Data was collected using surface mounted hydrophones and diver hydrophones with locational fixes done by GPS. These data were collected as part of an effort to quantify the ecosystem level effects of the commercial harvest of halibut as part of a 10 year study to evaluate the commercial harvest of halibut in Glacier Bay National Park. Knowledge of the home range size and shape as well as the degree of site fidelity was lacking for halibut and was determined to be necessary to evaluate what effects the commercial harvest has on Glacier Bay.
    Purpose:
    Supplemental_Information:
  Time_Period_of_Content:
    Time_Period_Information:
      Single_Date/Time:
        Calendar_Date:
        Time_of_Day:
    Currentness_Reference: unknown
  Status:
    Progress: Planned
    Maintenance_and_Update_Frequency:
  Spatial_Domain:
    Bounding_Coordinates:
      West_Bounding_Coordinate: -136.5
      East_Bounding_Coordinate: -135.400000000000005
      North_Bounding_Coordinate: 58.3500000000000014
      South_Bounding_Coordinate: 58.1499999999999985
  Keywords:
    Theme:
      Theme_Keyword_Thesaurus: None
      Theme_Keyword: FISH,FISHERIES,WILDLIFE POPULATIONS
    Place:
      Place_Keyword_Thesaurus: None
      Place_Keyword: AK
      Place_Keyword: Alaska
      Place_Keyword: Glacier Bay Ecosystem, Glacier Bay Region
      Place_Keyword: JUNEAU,MT. FAIRWEATHER
      Place_Keyword: Glacier Bay - including both East and West arms with the,majority of data in the mid to lower bay.
  Access_Constraints: Some Glacier Bay Ecosystem Project data sets may contain data with access constraints. Such areas include sensitive information on the locations of endangered species or cultural artifacts and data which contain private or confidential information. Data sets which are not complete may have access constraints until completion. Please contact the Infromation Management Systems Administrator at the Glacier Bay Field Station for details on any access constraints.
  Use_Constraints: Some Glacier Bay Ecosystem Project data sets may contain data with use constraints. Such areas include sensitive information on the locations of endangered species or cultural artifacts and data which contain private or confidential information. In addition some data sets are collabrative efforts with outside researchers and represent unpublished work for which we request respect for intellectual rights. Some data sets are not complete and if access is given the use may be restricted until completion. Please contact the Infromation Management Systems Administrator at the Glacier Bay Field Station for details on any access constraints.
  Point_of_Contact:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: NBS
        Contact_Person: GLACIER BAY INFORMATION MANAGEMENT
      Contact_Address:
        Address_Type: mailing address
        Address: NBS Glacier Bay Field,Station,P.O. Box 140,Gustavus, AK 99826
        City:
        State_or_Province:
        Postal_Code:
        Country:
      Contact_Voice_Telephone: (907) 697-2230
      Contact_Facsimile_Telephone:
      Contact_Electronic_Mail_Address: GLBA_INFORMATION_MANAGEMENT@NPS.GOV
  Browse_Graphic:
    Browse_Graphic_File_Name:
    Browse_Graphic_File_Description:
    Browse_Graphic_File_Type:
  Native_Data_Set_Environment:
Data_Quality_Information:
  Attribute_Accuracy:
    Attribute_Accuracy_Report: The degree of horizontal positional accuracy varies with the,depth of the fish and the presence of a strong thermocline.,At 100 feet empirical tests determined an error of about 25,meters in hydrophone fixes. There is an average error of,about 20 meters in the GPS fixes. However some fixes may be,off more than 100 meters. In 1995 the use of Y-encrypted,code GPS was begun. The error of this GPS was < 15 meters,90% of the time with an average error of 5 meters. Some,critical positions were averaged and this is mentioned in,the comments resulting in better than 5 meters accuracy.
    Quantitative_Attribute_Accuracy_Assessment:
      Attribute_Accuracy_Value:
      Attribute_Accuracy_Explanation:
  Logical_Consistency_Report:
  Completeness_Report: Not complete. 1995 data is not entered.

  Positional_Accuracy:
    Horizontal_Positional_Accuracy:
      Horizontal_Positional_Accuracy_Report:
  Lineage:
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: NATIONAL BIOLOGICAL SERVICE
          Publication_Date:
          Publication_Time:
          Title:
          Edition:
          Online_Linkage:
      Source_Scale_Denominator: N/A
      Type_of_Source_Media:
      Source_Time_Period_of_Content:
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date:
      Source_Contribution: NATIONAL BIOLOGICAL SERVICE
    Process_Step:
      Process_Description: The data was collected by internal implantation of 35 khz,sonic tags into the body cavity between the gonads and,stomach. Data was collected using surface mounted,hydrophones and diver with locational fixes done using GPS.
Spatial_Data_Organization_Information:
  Indirect_Spatial_Reference:
  Direct_Spatial_Reference_Method:
  Raster_Object_Information:
    Raster_Object_Type:
    Row_Count:
    Column_Count:
    Vertical_Count:
Spatial_Reference_Information:
  Horizontal_Coordinate_System_Definition:
    Geographic:
      Latitude_Resolution:
      Longitude_Resolution:
      Geographic_Coordinate_Units: OR
    Planar:
      Map_Projection:
        Map_Projection_Name: UNIVERSAL TRANSVERSE MERCATOR
        Albers_Conical_Equal_Area:
          Standard_Parallel:
          Longitude_of_Central_Meridian:
          Latitude_of_Projection_Origin:
          False_Easting:
          False_Northing: OR
      Grid_Coordinate_System:
        Grid_Coordinate_System_Name: UTM
        Universal_Transverse_Mercator:
          UTM_Zone_Number: 8
          Transverse_Mercator:
    OR
    Geodetic_Model:
      Horizontal_Datum_Name: NAD27
      Ellipsoid_Name:
      Semi-major_Axis:
      Denominator_of_Flattening_Ratio:
Entity_and_Attribute_Information:
  Overview_Description:
    Entity_and_Attribute_Overview:
    Entity_and_Attribute_Detail_Citation:
Distribution_Information:
  Distributor:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: Information Management System Administrator ,National Biological Service, Box 140, Glacier Bay Field Station, Gustavus, AK 99826, (907-697-2230)
        Contact_Person:
      Contact_Address:
        Address_Type:
        Address:
        City:
        State_or_Province:
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      Hours_of_Service:
      Contact_Instructions:
  Resource_Description:
  Distribution_Liability: Although these data have been processed,successfully on a computer system at the,National Biological Service, no warranty,expressed or implied is made regarding,the accuracy 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. This disclaimer applies both,to individual use of the data and,aggregate use with other data. It is,strongly recommended that these data are,directly acquired from a National,Biological Service server, and not,indirectly through other sources which,may have changed the data in some way.,It is also strongly recommended that,careful attention be paid to the,contents of the metadata file associated,with these data. The National Biological,Service shall not be held liable for,improper or incorrect use of the data,described and/or contained herein.
  Standard_Order_Process:
    Non-digital_Form:
    Digital_Form:
      Digital_Transfer_Information:
        Format_Name:
        Format_Version_Number:
        File_Decompression_Technique: gzip
        Transfer_Size:
      Digital_Transfer_Option:
        Online_Option:
          Computer_Contact_Information:
            Network_Address:
              Network_Resource_Name:
          Access_Instructions: Open access via anonymous ftp
        Offline_Option:
          Offline_Media:
          Recording_Capacity:
            Recording_Density:
            Recording_Density_Units:
          Recording_Format:
          Compatibility_Information:
    Fees:
    Ordering_Instructions: (Interim Statement) The Glacier Bay Information Management Team is currently developing the methodologies for distribution of data sets. Until standardized methods are developed please contact the Information Management System Administrator to obtain the latest information on methods for obtaining data.
    Turnaround:
  Custom_Order_Process:
  Technical_Prerequisites:
Metadata_Reference_Information:
  Metadata_Date:
  Metadata_Contact:
    Contact_Information:
      Contact_Person_Primary:
        Contact_Person: Karen Oakley
        Contact_Organization: USGS Biological Resources Division / Alaska Science Center
      Contact_Address:
        Address_Type: mailing address
        Address: 1011 East Tudor Road
        City: Anchorage
        State_or_Province: AK
        Postal_Code: 99503
        Country: USA
      Contact_Voice_Telephone: 907-786-3579
      Contact_Electronic_Mail_Address: karen_oakley@nbs.gov
      Contact_Instructions: The USGS BRD Alaska Science Center will be making an effort to keep the information provided in these metadata records current.  Please send corrections, additions and suggestions for improvement to Karen Oakley at the above address.
  Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
  Metadata_Standard_Version: 19940608
  Metadata_Access_Constraints: None
  Metadata_Use_Constraints: None