Metadata for ADMLAVA

Table of Contents

     Supplemental Information 
     Detailed Description


Citation_Information Originator: Schilling, Steve P. Publication_Date: 4/1/96 Title: Lava flow and related hazards of Mount Adams, Washington Geospatial_Data_Presentation_Format: map Series_Information Series_Name: OFR 96-178b Publication_Information Publication_Place: Vancouver, WA Publisher: U.S. Geological Survey Online_Linkage: Larger_Work_Citation: OFR 96-178 Scale_Denominator: 100000

Description Abstract This data set shows the boundaries for areas of volcanic hazard from Mount Adams, Washington (Scott and others, 1995). The lines in this data set encompass polygons labeled according to the type of volcanic hazard. Nine registration marks are distributed over the hazard zones. The coverage is in the universal transverse mercator projection.


Keywords: None.

Purpose This data set is intended for analysis, planning, and making maps of hazards. The polygon boundaries do not mark a distinct change between hazard and no-hazard areas. The degree of hazard decreases with increase of distance or elevation outside the boundary. Because many volcanic hazards, particularly debris flows and debris avalanches are complex phenomena, it is recommended that users read Scott and others (1995) prior to using this data.

Supplemental_Information Procedures_Used A stable base map with linework was obtained from the authors. Latitude, longitude registration ticks were added to the base and used to orient the map on a digitizing tablet. Linework was collected in ArcEdit with digitizer inch units, a weed tolerance of 0, and a nodesnap set to closest 0.05 inches. A second coverage was created from the original. The decimal degree latitude and longitude values were substituted for the digitizer inch values in the second coverage. The second coverage was reprojected to a UTM projection with parameters of zone 10, units in meters, and a spheroid of Clarke 1866. The original coverage was transformed to the second projection to create a coverage in meters. RMS values were inspected during the transformation. The final coverage was plotted at at the same scale as the base map, overlain on the basemap and checked for errors. The southern volcanic zone boundary was extended south and clipped with the 1:100000 Columbia River shoreline. The data set was renamed to admlava for Mount Adams lava hazard zone.

Revisions None.

Reviews_Applied Reviewed, Not Published.

Related_Spatial_and_Tabular_Data_Sets None.

Other_References_Cited See ADMLAVA.REF info file for source and further explanation of volcanic hazards from Mount Adams, Washington.

Notes None.

Time_Period_of_Content Currentness_Reference None.

Status Progress: Published Maintenance_and_Update_Frequency As needed

Spatial_Domain Bounding_Coordinates West_Bounding_Coordinate: -122.2736 East_Bounding_Coordinate: -121.0766 North_Bounding_Coordinate: 46.5081 South_Bounding_Coordinate: 45.5449

Keywords Theme Theme_Keyword_Thesaurus: None Theme_Keyword: Lava, pyroclastic flow, and lava/pyroclastic flow-induced lahar hazards Place Place_Keyword_Thesaurus: None Place_Keyword: Flanks of Mount Adams and surrounding region, Washington Stratum Stratum_Keyword_Thesaurus: None Stratum_Keyword: Temporal Temporal_Keyword_Thesaurus: None Temporal_Keyword:

Access_Constraints None.

Use_Constraints This data set should only be used at 1:100000 or smaller scales.

Point_of_Contact: See Data_Set_Credit Water Resources and Geologic Divisions at Cascade Volcano Observatory of the U.S. Geological Survey.

Security_Information Security_Classification_System: None Security_Classification: UNCLASSIFIED Security_Handling_Description: None

Native_Data_Set_Environment: dgux UNIX, ARC/INFO version 7.0.3

Cross_Reference Originator: Scott, William E., Iverson, Richard M., Vallance, James W., and Hildreth, Wes Publication_Date: Publication_Time: Title: Volcano hazards in the Mount Adams region, Washington Edition: Geospatial_Data_Presentation_Form: map Series_Information Series_Name: OFR 95-492 Issue_Identification: Publication_Information Publication_Place: Publisher: U.S. Geological Survey Other_Citation_Details: 11 p. Online_Linkage: Larger_Work_Citation:


Attribute_Accuracy Attribute_Accuracy_Report: See Logical_Consistency_Report: Polygon topology present.

Completeness_Report None.

Positional_Accuracy Horizontal_Positional_Accuracy Horizontal_Positional_Accuracy_Report: None.

Quantitative_Horizontal_Positional_Accuracy_Assessment: Horizontal_Positional_Accuracy_Value: 51 m Horizontal_Positional_Accuracy_Explanation: Resolution as reported
Vertical_Positional_Accuracy Vertical_Positional_Accuracy_Report: None.

Lineage: See Cloud_Cover Not applicable.


Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information SDTS_Terms_Description SDTS_Point_and_Vector_Object_Type: Point Point_and_Vector_Object_Count: 16 SDTS_Point_and_Vector_Object_Type: String Point_and_Vector_Object_Count: 118 SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains' Point_and_Vector_Object_Count: 17


        Grid_Coordinate_System_Name: Universal_Transverse_Mercator (UTM)
           Zone_Number: 10
        Planar_Distance_Units: METERS
    Geodetic Model
        Ellipsoid_Name:  Clarke 1866
        Semi-major_Axis: 6,378,206.4
        Denominator_of_Flattening: 294.98


Detailed_Description Entity_Type Entity_Type_Label: ADMLAVA.PAT Entity_Type_Definition: Areas of lava, pyroclastic flow, and lahars they generate Entity_Type_Definition_Source: see ADMLAVA.REF info file Attribute: Attribute_Label: - Attribute_Definition: Areas of lava, pyroclastic flow, and lahars they generate Attribute_Definition_Source: see ADMLAVA.REF info file Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: - Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: AREA Attribute_Definition: Area of poly in square coverage units Attribute_Definition_Source: Computed Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: Positive real numbers Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: PERIMETER Attribute_Definition: Perimeter of polygon in coverage units Attribute_Definition_Source: Computed Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: Positive real numbers Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: ADMLAVA# Attribute_Definition: Internal feature number Attribute_Definition_Source: Computed Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: Sequential unique positive integer Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: ADMLAVA-ID Attribute_Definition: User-assigned feature number Attribute_Definition_Source: User-defined Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: Integer Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: CODE Attribute_Definition: Identifier for polygon in specific hazard zone Attribute_Definition_Source: see ADMLAVA.REF info file Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: 1-3 (whole number) Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source:

Overview_Description Entity_and_Attribute_Overview Polygons were given an attribute (item CODE) linking them to one of three hazard zones (Scott and others, 1995). These attributes, added to the polygon attribute table (ADMLAVA.PAT), are as follows: CODE HAZARD ZONE 0 universal polygon 1 Hazard Zone LA - lahars started by snow and ice melt from lava and pyroclastic flows, lava, and pyroclastic flows. 2 Hazard Zone LB - lava flows, pyroclastic flows, and thick near-vent tephra deposits from vents at the north and south ends of the Mount Adams and Indian Heaven volcanic fields 3 Hazard Zone LC - lava flows, pyroclastic flows, and thick near-vent tephra deposits from Simcoe Mountains volcanic field and other part of southern Washington Cascade Range

Entity_and_Attribute_Detail_Citation: Not Available


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Metadata_Date: 19960410 Metadata_Contact: sschilli Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: 19940608 Metadata_Time_Convention: Local Time Metadata_Security_Information: Metadata_Security_Classification_System: None Metadata_Security_Classification: UNCLASSIFIED Metadata_Security_Handling_Description: None

Last modified: 96-04-11.08:54:29.Thu