Identification_Information:
  Citation:
    Citation_Information:
      Originator: Jeffrey A. Coe
      Originator: Jonathan W. Godt
      Publication_Date: 2002
      Title: al-dfalb
      Geospatial_Data_Presentation_Form: vector digital data
      Series_Information:
        Series_Name: U.S. Geological Survey Miscellaneous Field Studies Map
        Issue_Identification: MF-2384
      Publication_Information:
        Publication_Place: Denver, CO
        Publisher: U.S. Geological Survey
      Online_Linkage: http://geology.cr.usgs.gov/pub/mf-maps/mf-2384/
      Larger_Work_Citation:
        Citation_Information:
          Originator: Jeffrey A. Coe
          Originator: Jonathan W. Godt
          Publication_Date: 2002
          Title: Debris flows triggered by the El Nino rainstorm of February 2-3, 1998, Walpert Ridge and vicinity, Alameda County, California
          Geospatial_Data_Presentation_Form: map
          Series_Information:
            Series_Name: Miscellaneous Field Studies Map
            Issue_Identification: MF-2384
          Publication_Information:
            Publication_Place: Denver, Colorado
            Publisher: U.S. Geological Survey
  Description:
    Abstract: On February 2 and 3, 1998, a rainstorm generated by the 1997-98 El Nino moved through the San Francisco Bay region of California triggering widespread slope failures. In the Walpert Ridge area of Alameda County 531 debris flows were triggered by the storm. These data depict the debris flows and landslides as polygons. The landslide polygons were mapped from 1:30,000 aerial photography using a PG2 photogrammetric plotter. The mapped debris flows and landslides were digitized manually in ArcInfo.
    Purpose: The coverage shows the distribution of slope failures triggered during the February 2 - 3 rainstorm in the Walpert Ridge area, California. These data were analyzed with respect to digital topography, a surficial geologic mapping, and NEXRAD rainfall estimates to provide a detailed assesment of the landslide event.
  Time_Period_of_Content:
    Time_Period_Information:
      Single_Date/Time:
        Calendar_Date: 19980310
    Currentness_Reference: ground condition
  Status:
    Progress: Complete
    Maintenance_and_Update_Frequency: None planned
  Spatial_Domain:
    Bounding_Coordinates:
      West_Bounding_Coordinate: -122.061884
      East_Bounding_Coordinate: -121.889662
      North_Bounding_Coordinate: 37.684036
      South_Bounding_Coordinate: 37.535029
  Keywords:
    Theme:
      Theme_Keyword_Thesaurus: none
      Theme_Keyword: landslide
      Theme_Keyword: debris flow
      Theme_Keyword: El Nino
    Place:
      Place_Keyword_Thesaurus: none
      Place_Keyword: Alameda County
      Place_Keyword: California
  Access_Constraints: none
  Use_Constraints: These data are a landslide inventory and not a landslide hazard map. The nominal and appropriate scale is 1:24,000.
  Point_of_Contact:
    Contact_Information:
      Contact_Person_Primary:
        Contact_Person: Jonathan W. Godt
        Contact_Organization: USGS
      Contact_Position: Geologist
      Contact_Address:
        Address_Type: mailing address
        Address: MS 966, Denver Federal Center, Box 25046
        City: Denver
        State_or_Province: CO
        Postal_Code: 80225-0046
        Country: USA
      Contact_Voice_Telephone: (303) 273-8626
      Contact_Facsimile_Telephone: (303) 273-8600
      Contact_Electronic_Mail_Address: jgodt@usgs.gov
      Hours_of_Service: 0800 -1630 MST M-F
      Contact_Instructions: E-mail contact is preferred
  Browse_Graphic:
    Browse_Graphic_File_Name: http://geology.cr.usg.gov/pub/mf-maps/mf-2384-1so.pdf/
    Browse_Graphic_File_Description: Screen-optimized PDF image of sheet 1 of 3 of 'Debris flows triggered by the El Niņo rainstorm of February 2-3, 1998, Walpert Ridge and vicinity, Alameda County, California
    Browse_Graphic_File_Type: Adobe Portable Document Format
Browse_Graphic:
    Browse_Graphic_File_Name: http://geology.cr.usg.gov/pub/mf-maps/mf-2384-2so.pdf/
    Browse_Graphic_File_Description: Screen-optimized PDF image of sheet 2 of 3 of 'Debris flows triggered by the El Niņo rainstorm of February 2-3, 1998, Walpert Ridge and vicinity, Alameda County, California
    Browse_Graphic_File_Type: Adobe Portable Document Format
Browse_Graphic:
    Browse_Graphic_File_Name: http://geology.cr.usg.gov/pub/mf-maps/mf-2384-3so.pdf/
    Browse_Graphic_File_Description: Screen-optimized PDF image of sheet 3 of 3 of 'Debris flows triggered by the El Niņo rainstorm of February 2-3, 1998, Walpert Ridge and vicinity, Alameda County, California
    Browse_Graphic_File_Type: Adobe Portable Document Format
Browse_Graphic:
    Browse_Graphic_File_Name: http://geology.cr.usg.gov/pub/mf-maps/mf-2384-1po.pdf/
    Browse_Graphic_File_Description: Print-optimized PDF image of sheet 1 of 3 of 'Debris flows triggered by the El Niņo rainstorm of February 2-3, 1998, Walpert Ridge and vicinity, Alameda County, California
    Browse_Graphic_File_Type: Adobe Portable Document Format
Browse_Graphic:
    Browse_Graphic_File_Name: http://geology.cr.usg.gov/pub/mf-maps/mf-2384-2po.pdf/
    Browse_Graphic_File_Description: Print-optimized PDF image of sheet 2 of 3 of 'Debris flows triggered by the El Niņo rainstorm of February 2-3, 1998, Walpert Ridge and vicinity, Alameda County, California
    Browse_Graphic_File_Type: Adobe Portable Document Format
Browse_Graphic:
    Browse_Graphic_File_Name: http://geology.cr.usg.gov/pub/mf-maps/mf-2384-3po.pdf/
    Browse_Graphic_File_Description: Print-optimized PDF image of sheet 3 of 3 of 'Debris flows triggered by the El Niņo rainstorm of February 2-3, 1998, Walpert Ridge and vicinity, Alameda County, California
    Browse_Graphic_File_Type: Adobe Portable Document Format
  Security_Information:
    Security_Classification_System: none
    Security_Classification: Unclassified
    Security_Handling_Description: no special handling required
  Native_Data_Set_Environment: Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 2; ESRI ArcCatalog 8.1.1.649
Data_Quality_Information:
  Attribute_Accuracy:
    Attribute_Accuracy_Report: Attributes consist of an identifier for debris flows or other landslide types. Attributes were checked for completeness and accuracy.
  Positional_Accuracy:
    Horizontal_Positional_Accuracy:
      Horizontal_Positional_Accuracy_Report: The linework was digitized manually. Landslide locations were mapped using a photogrammetric plotter and estimated to be accurate within 10 m. Landslide features as small as 1 m were visible in the photography.
  Logical_Consistency_Report: This data set is a map coverage containing arcs and polygons, with some annotations.
  Completeness_Report: This digital file is the geospatial file used to create the debris-flow map. Files for the text, references, tables, and figures are not included in the geospatial file, but are included in the browse graphic files.
  Lineage:
    Source_Information:
      Source_Citation:
        Citation_Information:
          Originator: NASA Ames Research Center, Mountain View, CA
          Publication_Date: 1998
          Title: aerial photography of Alameda County, CA
      Type_of_Source_Media: aerial photography
      Source_Time_Period_of_Content:
        Source_Currentness_Reference: the aerial photographs reflect the ground conditions on the date the photographs were taken.
        Time_Period_Information:
          Single_Date/Time:
            Calendar_Date: 19980310
      Source_Citation_Abbreviation:
        Aerial photographs from National Aeronautics and Space Administration Ames Research Center
      Source_Contribution: The aerial photographs were used to compile the debris-flow data on the map.
    Process_Step:
      Process_Description: Landslides and debris flows were mapped using 1:30,000 -scale color aerial photographs and a Kern PG-2 photogrammetric plotter at 4X and 8X magnifications. The photographs were scaled and oriented to the topographic base map using prominent topographic and cultural landmarks at the scale of 1:24,000. The mapped landslides were digitized manually in ArcInfo.
      Process_Date: 2001
      Process_Contact:
        Contact_Information:
          Contact_Person_Primary:
            Contact_Person: Jonathan W. Godt
            Contact_Organization: USGS
          Contact_Address:
            Address_Type: mailing address
            Address: Mail Stop 966, Denver Federal Center, P.O. Box 25046
            City: Denver
            State_or_Province: CO
            Postal_Code: 80225
            Country: USA
          Contact_Position: Geologist
          Contact_Voice_Telephone: 303-273-8626
          Contact_Facsimile_Telephone: 303-273-8600
          Contact_Electronic_Mail_Address: jgodt@usgs.gov
          Hours_of_Service: 8:00 - 16:30 MST
          Contact_Instructions: e-mail contact is preferred
Spatial_Data_Organization_Information:
  Direct_Spatial_Reference_Method: Vector
  Point_and_Vector_Object_Information:
    SDTS_Terms_Description:
      SDTS_Point_and_Vector_Object_Type: Complete chain
      Point_and_Vector_Object_Count: 628
    SDTS_Terms_Description:
      SDTS_Point_and_Vector_Object_Type: Label point
      Point_and_Vector_Object_Count: 565
    SDTS_Terms_Description:
      SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains
      Point_and_Vector_Object_Count: 565
    SDTS_Terms_Description:
      SDTS_Point_and_Vector_Object_Type: Point
      Point_and_Vector_Object_Count: 41
Spatial_Reference_Information:
  Horizontal_Coordinate_System_Definition:
    Planar:
      Map_Projection:
        Map_Projection_Name: Albers Conical Equal Area
        Albers_Conical_Equal_Area:
          Standard_Parallel: 34.000000
          Standard_Parallel: 40.500000
          Longitude_of_Central_Meridian: -120.000000
          Latitude_of_Projection_Origin: 0.000000
          False_Easting: 0.000000
          False_Northing: -4000000.000000
      Planar_Coordinate_Information:
        Planar_Coordinate_Encoding_Method: coordinate pair
        Coordinate_Representation:
          Abscissa_Resolution: 0.000009
          Ordinate_Resolution: 0.000009
        Planar_Distance_Units: meters
    Geodetic_Model:
      Horizontal_Datum_Name: D_Clarke_1866
      Ellipsoid_Name: Clarke 1866
      Semi-major_Axis: 6378206.400000
      Denominator_of_Flattening_Ratio: 294.978698
Entity_and_Attribute_Information:
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label: al-dfalb.aat
      Entity_Type_Definition: debris-flow arcs
      Entity_Type_Definition_Source: The authors of this publication.
    Attribute:
      Attribute_Label: FID
      Attribute_Definition: Internal feature number.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated.
    Attribute:
      Attribute_Label: Shape
      Attribute_Definition: Feature geometry.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Coordinates defining the features.
    Attribute:
      Attribute_Label: FNODE#
      Attribute_Definition: Internal node number for the beginning of an arc (from-node).
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Whole numbers that are automatically generated.
    Attribute:
      Attribute_Label: TNODE#
      Attribute_Definition: Internal node number for the end of an arc (to-node).
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Whole numbers that are automatically generated.
    Attribute:
      Attribute_Label: LPOLY#
      Attribute_Definition: Internal node number for the left polygon.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Whole numbers that are automatically generated.
    Attribute:
      Attribute_Label: RPOLY#
      Attribute_Definition: Internal node number for the right polygon.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Whole numbers that are automatically generated.
    Attribute:
      Attribute_Label: LENGTH
      Attribute_Definition: Length of feature in internal units.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Positive real numbers that are automatically generated.
    Attribute:
      Attribute_Label: AL-DFALB#
      Attribute_Definition: Internal feature number.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated.
    Attribute:
      Attribute_Label: AL-DFALB-ID
      Attribute_Definition: User-defined feature number.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated.
    Entity_Type:
      Entity_Type_Label: al-dfalb.pat
      Entity_Type_Definition: Debris-flow polygons.
      Entity_Type_Definition_Source: The authors of this publication.
    Attribute:
      Attribute_Label: FID
      Attribute_Definition: Internal feature number.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated.
    Attribute:
      Attribute_Label: Shape
      Attribute_Definition: Feature geometry.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Coordinates defining the features.
    Attribute:
      Attribute_Label: AREA
      Attribute_Definition: Area of feature in internal units squared.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Positive real numbers that are automatically generated.
    Attribute:
      Attribute_Label: PERIMETER
      Attribute_Definition: Perimeter of feature in internal units.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Positive real numbers that are automatically generated.
    Attribute:
      Attribute_Label: AL-DFALB#
      Attribute_Definition: Internal feature number.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated.
    Attribute:
      Attribute_Label: AL-DFALB-ID
      Attribute_Definition: User-defined feature number.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated.
    Attribute:
      Attribute_Label: TYPE
      Attribute_Definition: landslide type
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Enumerated_Domain:
          Enumerated_Domain_Value: df
          Enumerated_Domain_Value_Definition: debris flow
          Enumerated_Domain_Value_Definition_Source: authors of this publication
        Enumerated_Domain:
          Enumerated_Domain_Value: ls
          Enumerated_Domain_Value_Definition: landslide feature other than debris flow
          Enumerated_Domain_Value_Definition_Source: authors of this publication
Distribution_Information:
  Distributor:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: U.S. Geological Survey
      Contact_Address:
        Address_Type: mailing address
        Address: USGS Information Services
        Address: Box 25286
        City: Denver
        State_or_Province: CO
        Postal_Code: 80225-0046
        Country: United States
      Contact_Voice_Telephone: 1-888-ASK-USGS
  Resource_Description: MF-2384
  Distribution_Liability: none
  Standard_Order_Process:
    Digital_Form:
      Digital_Transfer_Information:
        Format_Name: Arc/Info Export (.e00)
        File_Decompression_Technique: Files are available as zipped and gzipped tar archives. On UNIX systems, use the command gzip -cd (filename).tar.gz | tar xvf. See http://geology.cr.usgs.gov/maps/software.html for information on programs to extract zipped, gzipped, and tar formats on MacOS and Windows.
        Transfer_Size: 0.217
      Digital_Transfer_Option:
        Online_Option:
          Computer_Contact_Information:
            Network_Address:
              Network_Resource_Name: http://geology.cr.usgs.gov/pub/mf-maps/mf-2384/
    Fees: No cost for digital files.
  Standard_Order_Process:
    Non-digital_Form: Available as three map sheets that are printed on-demand on a high-resolution plotter. Order from USGS at the address listed above or see http://rmmcweb.cr.usgs.gov/public/mod/order.html for more ordering information.
    Fees: for current prices please see http://rmmcweb.cr.usgs.gov/public/mod/order.html
Metadata_Reference_Information:
  Metadata_Date: 20020123
  Metadata_Contact:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: U.S. Geological Survey
        Contact_Person: Jonathan W. Godt
      Contact_Position: Geologist
      Contact_Address:
        Address_Type: mailing address
        Address: Denver Federal Center
        Address: MS 966, Box 25046
        City: Denver
        State_or_Province: CO
        Postal_Code: 80225-0046
        Country: United States
      Contact_Voice_Telephone: (303) 273-8626
      Contact_Facsimile_Telephone: (303) 273-8600
      Contact_Electronic_Mail_Address: jgodt@usgs.gov
      Hours_of_Service: 0800 - 1630 MST M-F
      Contact_Instructions: E-mail contact is preferred
  Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
  Metadata_Standard_Version: FGDC-STD-001-1998
  Metadata_Time_Convention: local time
  Metadata_Extensions:
    Online_Linkage: http://www.esri.com/metadata/esriprof80.html
    Profile_Name: ESRI Metadata Profile