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  Hierarchy_Level: 
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  Metadata_Author: 
    Responsible_Party: 
      Individual_Name: 
        Stacey A. Huang
      Organisation_Name: 
        NASA Goddard Space Flight Center (GSFC)
      Contact_Information: 
        Contact: 
          Address: 
            Address: 
              Electronic_Mail_Address: 
                stacey.a.huang@nasa.gov
          Online_Resource: 
            Online_Resource: 
              Linkage: 
                URL: 
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              Description: 
              Function: 
                OnLine_Function_Code: 
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        Role_Code: 
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  Date_Stamp: 
    Date: 
      2024-11-14
  Metadata_Standard_Name: 
    ISO 19115-2 Geographic Information - Metadata Part 2 Extensions for 
    imagery and gridded data
  Metadata_Standard_Version: 
    ISO 19115-2:2009(E)
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            Dimension_Name_Type_Code: 
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          Dimension_Size: 
      Cell_Geometry: 
        Cell_Geometry_Code: 
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      Transformation_Parameter_Availability: 
  Identification_Information: 
    Data_Identification: 
      Citation: 
        Citation: 
          Title: 
            Vertical Land Motion - Tutuila and Aunuu, American Samoa
          Date: 
            Date: 
              Date: 
                Date: 
                  2022-11-23
              Date_Type: 
                Date_Type_Code: 
                  creation
          Date: 
            Date: 
              Date: 
                Date: 
                  2022-11-23
              Date_Type: 
                Date_Type_Code: 
                  issued
          Date: 
            Date: 
              Date: 
                Date: 
                  2022-11-23
              Date_Type: 
                Date_Type_Code: 
                  revision
          Identifier: 
            Identifier: 
              Authority: 
                Citation: 
                  Title: 
                    org.pacioos
                  Date: 
              Code: 
                as_nasa_tutma_vlm
          Cited_Responsible_Party: 
            Responsible_Party: 
              Individual_Name: 
                Stacey A. Huang
              Organisation_Name: 
                NASA Goddard Space Flight Center (GSFC)
              Contact_Information: 
                Contact: 
                  Address: 
                    Address: 
                      Electronic_Mail_Address: 
                        stacey.a.huang@nasa.gov
                  Online_Resource: 
                    Online_Resource: 
                      Linkage: 
                        URL: 
                          https://ael.gsfc.nasa.gov/sci/bio/stacey.a.huang
                      Protocol: 
                        http
                      Application_Profile: 
                        web browser
                      Name: 
                      Description: 
                      Function: 
                        OnLine_Function_Code: 
                          information
              Role: 
                Role_Code: 
                  originator
          Cited_Responsible_Party: 
            Responsible_Party: 
              Individual_Name: 
                Jeanne M. Sauber
              Organisation_Name: 
                NASA Goddard Space Flight Center (GSFC)
              Contact_Information: 
                Contact: 
                  Address: 
                    Address: 
                      Electronic_Mail_Address: 
                        jeanne.m.sauber-rosenberg@nasa.gov
                  Online_Resource: 
                    Online_Resource: 
                      Linkage: 
                        URL: 
                          https://science.gsfc.nasa.gov/earth/hydrology/bio/jeanne.m.sauber-rosenberg
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                        http
                      Application_Profile: 
                        web browser
                      Name: 
                      Description: 
                      Function: 
                        OnLine_Function_Code: 
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              Role: 
                Role_Code: 
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          Cited_Responsible_Party: 
            Responsible_Party: 
              Individual_Name: 
                Richard Ray
              Organisation_Name: 
                NASA Goddard Space Flight Center (GSFC)
              Contact_Information: 
                Contact: 
                  Address: 
                    Address: 
                      Electronic_Mail_Address: 
                        richard.d.ray@nasa.gov
                  Online_Resource: 
                    Online_Resource: 
                      Linkage: 
                        URL: 
                          https://science.gsfc.nasa.gov/sci/bio/richard.d.ray
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                        http
                      Application_Profile: 
                        web browser
                      Name: 
                      Description: 
                      Function: 
                        OnLine_Function_Code: 
                          information
              Role: 
                Role_Code: 
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          Cited_Responsible_Party: 
            Responsible_Party: 
              Organisation_Name: 
                Pacific Islands Ocean Observing System (PacIOOS)
              Contact_Information: 
                Contact: 
                  Address: 
                    Address: 
                      Electronic_Mail_Address: 
                        info@pacioos.org
                  Online_Resource: 
                    Online_Resource: 
                      Linkage: 
                        URL: 
                          http://pacioos.org
                      Protocol: 
                        http
                      Application_Profile: 
                        web browser
                      Name: 
                      Description: 
                      Function: 
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                          information
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          Other_Citation_Details: 
            Related publication: Huang, S.A., J.M. Sauber, and R. Ray. 2022. 
            Mapping vertical land motion in challenging terrain: Six-year 
            trends on Tutuila Island, American Samoa, with PS-InSAR, GPS, tide 
            gauge, and satellite altimetry data. Geophysical Research Letters, 
            49, e2022GL101363. https://doi.org/10.1029/2022GL101363.
      Abstract: 
        Land subsidence rates across Tutuila and Aunuu are drawn from recent 
        work by Huang et al. (2022) showing that the average rate of 
        subsidence on these islands is spatially variable and ranges from 6 to 
        9 mm/yr. The study analyzed all available radar data from the European 
        Space Agency (ESA) Sentinel-1 satellite, which covers Tutuila and 
        Aunuu only, and derived an average subsidence rate for the 6-year 
        period between September 2015 to December 2022. Data are available 
        over areas where radar data was successfully used to retrieve 
        unambiguous measurements. Vertical land motion (VLM) measurements are 
        provided by this data layer in millimeters per year (mm/yr), with 
        negative values indicating land subsidence.
      Purpose: 
        PacIOOS provides timely, reliable, and accurate ocean information to 
        support a safe, clean, productive ocean and resilient coastal zone in 
        the U.S. Pacific Islands region.
      Credit: 
        The Pacific Islands Ocean Observing System (PacIOOS) is funded through 
        the National Oceanic and Atmospheric Administration (NOAA) as a 
        Regional Association within the U.S. Integrated Ocean Observing System 
        (IOOS). PacIOOS is coordinated by the University of Hawaii School of 
        Ocean and Earth Science and Technology (SOEST).
      Point_Of_Contact: 
        Responsible_Party: 
          Individual_Name: 
            Stacey A. Huang
          Organisation_Name: 
            NASA Goddard Space Flight Center (GSFC)
          Contact_Information: 
            Contact: 
              Address: 
                Address: 
                  Electronic_Mail_Address: 
                    stacey.a.huang@nasa.gov
              Online_Resource: 
                Online_Resource: 
                  Linkage: 
                    URL: 
                      https://ael.gsfc.nasa.gov/sci/bio/stacey.a.huang
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                    http
                  Application_Profile: 
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                  Name: 
                  Description: 
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                    OnLine_Function_Code: 
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      Descriptive_Keywords: 
        Keywords: 
          Keyword: 
            Earth Science > Human Dimensions > Natural Hazards > Land Subsidence
          Keyword: 
            Earth Science > Land Surface > Geomorphic Landforms/Processes > 
            Coastal Processes > Subsidence
          Keyword: 
            Earth Science > Solid Earth > Geomorphic Landforms/Processes > 
            Coastal Processes > Subsidence
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          Thesaurus_Name: 
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              Date: 
      Descriptive_Keywords: 
        Keywords: 
          Keyword: 
            Ocean > Pacific Ocean > South Pacific Ocean > Polynesia > American 
            Samoa > Aunuu
          Keyword: 
            Ocean > Pacific Ocean > South Pacific Ocean > Polynesia > American 
            Samoa > Tutuila
          Type: 
            Keyword_Type_Code: 
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              Date: 
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          Thesaurus_Name: 
            Citation: 
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              Date: 
      Resource_Constraints: 
        Legal_Constraints: 
          Use_Limitation: 
            The data may be used and redistributed for free but is not 
            intended for legal use, since it may contain inaccuracies. Neither 
            the data Contributor, University of Hawaii, PacIOOS, NOAA, State 
            of Hawaii nor the United States Government, nor any of their 
            employees or contractors, makes any warranty, express or implied, 
            including warranties of merchantability and fitness for a 
            particular purpose, or assumes any legal liability for the 
            accuracy, completeness, or usefulness, of this information.
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            Citation: 
              Title: 
                Pacific Islands Ocean Observing System (PacIOOS)
              Date: 
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      Language: 
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      Citation: 
        Citation: 
          Title: 
            Vertical Land Motion - Tutuila and Aunuu, American Samoa
          Date: 
            Date: 
              Date: 
                Date: 
                  2022-11-23
              Date_Type: 
                Date_Type_Code: 
                  creation
          Date: 
            Date: 
              Date: 
                Date: 
                  2022-11-23
              Date_Type: 
                Date_Type_Code: 
                  issued
          Date: 
            Date: 
              Date: 
                Date: 
                  2022-11-23
              Date_Type: 
                Date_Type_Code: 
                  revision
          Cited_Responsible_Party: 
            Responsible_Party: 
              Individual_Name: 
                Stacey A. Huang
              Organisation_Name: 
                NASA Goddard Space Flight Center (GSFC)
              Contact_Information: 
                Contact: 
                  Address: 
                    Address: 
                      Electronic_Mail_Address: 
                        stacey.a.huang@nasa.gov
                  Online_Resource: 
                    Online_Resource: 
                      Linkage: 
                        URL: 
                          https://ael.gsfc.nasa.gov/sci/bio/stacey.a.huang
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                Pacific Islands Ocean Observing System (PacIOOS)
              Contact_Information: 
                Contact: 
                  Address: 
                    Address: 
                      Electronic_Mail_Address: 
                        info@pacioos.org
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                    Online_Resource: 
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                        URL: 
                          http://pacioos.org
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                      Application_Profile: 
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                      Description: 
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              Role: 
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      Abstract: 
        Land subsidence rates across Tutuila and Aunuu are drawn from recent 
        work by Huang et al. (2022) showing that the average rate of 
        subsidence on these islands is spatially variable and ranges from 6 to 
        9 mm/yr. The study analyzed all available radar data from the European 
        Space Agency (ESA) Sentinel-1 satellite, which covers Tutuila and 
        Aunuu only, and derived an average subsidence rate for the 6-year 
        period between September 2015 to December 2022. Data are available 
        over areas where radar data was successfully used to retrieve 
        unambiguous measurements. Vertical land motion (VLM) measurements are 
        provided by this data layer in millimeters per year (mm/yr), with 
        negative values indicating land subsidence.
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        Citation: 
          Title: 
            Vertical Land Motion - Tutuila and Aunuu, American Samoa
          Date: 
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              Date: 
                Date: 
                  2022-11-23
              Date_Type: 
                Date_Type_Code: 
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          Date: 
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              Date: 
                Date: 
                  2022-11-23
              Date_Type: 
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                  2022-11-23
              Date_Type: 
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          Cited_Responsible_Party: 
            Responsible_Party: 
              Individual_Name: 
                Stacey A. Huang
              Organisation_Name: 
                NASA Goddard Space Flight Center (GSFC)
              Contact_Information: 
                Contact: 
                  Address: 
                    Address: 
                      Electronic_Mail_Address: 
                        stacey.a.huang@nasa.gov
                  Online_Resource: 
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                          https://ael.gsfc.nasa.gov/sci/bio/stacey.a.huang
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                Pacific Islands Ocean Observing System (PacIOOS)
              Contact_Information: 
                Contact: 
                  Address: 
                    Address: 
                      Electronic_Mail_Address: 
                        info@pacioos.org
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                    Online_Resource: 
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                        URL: 
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                      Application_Profile: 
                        web browser
                      Name: 
                      Description: 
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      Abstract: 
        Land subsidence rates across Tutuila and Aunuu are drawn from recent 
        work by Huang et al. (2022) showing that the average rate of 
        subsidence on these islands is spatially variable and ranges from 6 to 
        9 mm/yr. The study analyzed all available radar data from the European 
        Space Agency (ESA) Sentinel-1 satellite, which covers Tutuila and 
        Aunuu only, and derived an average subsidence rate for the 6-year 
        period between September 2015 to December 2022. Data are available 
        over areas where radar data was successfully used to retrieve 
        unambiguous measurements. Vertical land motion (VLM) measurements are 
        provided by this data layer in millimeters per year (mm/yr), with 
        negative values indicating land subsidence.
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                PNG, SVG, and TIFF. Supported info formats include GeoJSON, 
                GeoJSON-P, GML, HTML, and plain text.
              Function: 
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          Descriptor: 
            Vertical land motion (VLM) in millimeters per year (mm/yr). 
            Negative values indicate land subsidence.
  Distribution_Information: 
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      Distributor: 
        Distributor: 
          Distributor_Contact: 
            Responsible_Party: 
              Individual_Name: 
              Organisation_Name: 
                Pacific Islands Ocean Observing System (PacIOOS)
              Contact_Information: 
                Contact: 
                  Address: 
                    Address: 
                      Electronic_Mail_Address: 
                        info@pacioos.org
                  Online_Resource: 
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                      Linkage: 
                        URL: 
                          http://pacioos.org
                      Protocol: 
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                      Function: 
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                Role_Code: 
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                    URL: 
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                  Protocol: 
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                  Name: 
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                  Description: 
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                    which offers multiple output formats and an OpenLayers 
                    viewer.
                  Function: 
                    OnLine_Function_Code: 
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                  Name: 
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                  Description: 
                    This URL provides a viewer and/or data access for this 
                    dataset.
                  Function: 
                    OnLine_Function_Code: 
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    Data_Quality: 
      Scope: 
        Scope: 
          Hierarchy_Level: 
            Scope_Code: 
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      Lineage: 
        Lineage: 
          Statement: 
            2022-11-23T00:00:00Z Data first published as part of Geophysical 
            Research Letters publication https://doi.org/10.1029/2022GL101363.
            2023-11-27T00:00:00Z Data published in PacIOOS GeoServer for use 
            by the American Samoa Sea Level Rise Viewer.
  Metadata_Maintenance: 
    Maintenance_Information: 
      Maintenance_And_Update_Frequency: 
      Maintenance_Note: 
        This record was translated and enhanced from GeoServer OGC Web 
        Services (OWS) using PacIOOS software.