Map Showing Recent and Historic Landslide Activity on Coastal Bluffs of Puget Sound Between Shilshole Bay and Everett, Washington

Available as - [Outline]

Metadata:
Identification_Information:
Citation:
Citation_Information:
Originator: Baum, Rex L.
Originator: Harp, Edwin L.
Originator: Hultman, William A.
Publication_Date: 2000
Title:
Map Showing Recent and Historic Landslide Activity on Coastal Bluffs of Puget Sound Between Shilshole Bay and Everett, Washington
Geospatial_Data_Presentation_Form: map
Series_Information:
Series_Name: U.S. Geological Survey Miscellaneous Field Studies Map
Issue_Identification: MF-2346
Publication_Information:
Publication_Place: Denver, Colorado
Publisher: U.S. Geological Survey
Online_Linkage:
<http://greenwood.cr.usgs.gov/pub/mf-maps/mf-2346/>

Description:

Abstract:
This cover contains the outlines of landslides that occurred on the coastal bluffs between Seattle and Everett, Wash., during the winters of 1996 and 1997.

Purpose:
This cover shows the distribution of the recent landslides along the bluffs next to Puget Sound between Shilshole Bay and Everett, Wash. The data were compiled at 1:24,000 scale primarily from 1:12,000-scale aerial photographs and are not intended to be used at any finer scale than 1:24,000. The data should not be used as a substitute for detailed investigation to determine site-specific slope stability or the existence of landslides at specific sites.

Supplemental_Information:
The coverage combines data from the U.S. Geological Survey and Shannon and Wilson, Inc. Data provided by Shannon and Wilson, Inc. are used with permission of Burlington Northern Santa Fe Railroad.

Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 1996
Ending_Date: 1997
Currentness_Reference: publication date

Status:
Progress: Complete
Maintenance_and_Update_Frequency: None Planned

Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -122.40320587
East_Bounding_Coordinate: -122.22104645
North_Bounding_Coordinate: 47.97537613
South_Bounding_Coordinate: 47.67932129

Keywords:
Theme:
Theme_Keyword_Thesaurus: none
Theme_Keyword: landslides
Theme_Keyword: debris flows
Theme_Keyword: slope stability
Place:
Place_Keyword_Thesaurus: none
Place_Keyword: USA
Place_Keyword: Washington
Place_Keyword: King County
Place_Keyword: Snohomish County

Access_Constraints: none

Use_Constraints:
The data were compiled at 1:24,000 scale and are not intended to be used at any scale larger than 1:24,000. The data should not be used as a substitute for detailed investigation to determine site-specific slope stability or the existence of landslides at specific sites.

Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Rex L. Baum
Contact_Organization: Central Region Geologic Hazards Team
Contact_Address:
Address_Type: mailing address
Address: U.S. Geological Survey, Box 25046, MS 966
City: Denver
State_or_Province: Colorado
Postal_Code: 80225-0046
Country: USA
Contact_Voice_Telephone: (303)273-8610
Contact_Electronic_Mail_Address: baum@usgs.gov

Data_Set_Credit:
John A. Michael provided oversight and direction in the GIS aspect of the project. Nicolas Houdre and Caroline Arnal digitized the original maps to create the coverage.

Native_Data_Set_Environment:
SunOS, 5.6, sun4u UNIX ARC/INFO version 7.2.1

Cross_Reference:
Citation_Information:
Originator: Shannon and Wilson, Inc.
Publication_Date: 1997
Title:
Draft Report, Evaluation of three landslide areas between Seattle and Everett, Scenic Subdivision, Pacific Division

Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
The linework was captured by hand digitizing each 7.5' quadrangle. Each quadrangle was rigorously proofed. The coverage was edited and assembled using ARC/INFO software.

Logical_Consistency_Report:
Polygon and chain-node topology present. All polygons contain label points and are closed. Several arcs (scarps) exist and are attributed as such.
Completeness_Report: The data are complete.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Each 7.5' quadrangle was registered on an Altek digitizer with errors not greater than 1/200 inch.

Lineage:
Process_Step:
Process_Description:
The landslide polygon outlines were drawn on 7.5' paper map quadrangles. The outlines were interpreted primarily from aerial photographs. The linework was captured by hand digitizing each 7.5' quadrangle. Each quadrangle was rigorously proofed against the original maps. The coverage was edited and assembled using ARC/INFO software. Harp also checked the data against 1:6000-scale photographs that had been acquired by Shannon and Wilson, Inc. in February 1997 and made several additions and revisions to the original maps. Baum made additional revisons by comparing the air photo interpretation against detailed field mapping (by Shannon and Wilson, Inc) for three areas along the bluffs.
Process_Date: 1998
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: John Michael
Contact_Organization: U.S. Geological Survey
Contact_Address:
Address_Type: mailing address
Address: Box 25046, Mail Stop 966
City: Denver
State_or_Province: Colorado
Postal_Code: 80225
Country: USA
Contact_Voice_Telephone: 303-273-8562
Contact_Electronic_Mail_Address: jmichael@usgs.gov

Spatial_Data_Organization_Information:
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: 298
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: String
Point_and_Vector_Object_Count: 331
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains
Point_and_Vector_Object_Count: 299

Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Geographic:
Latitude_Resolution: 0.0000377397554
Longitude_Resolution: 0.0000377397554
Geographic_Coordinate_Units: Decimal Degrees
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1927
Ellipsoid_Name: Clarke 1866
Semi-major_Axis: 6378206.4
Denominator_of_Flattening_Ratio: 294.98

Entity_and_Attribute_Information:
Overview_Description:
Entity_and_Attribute_Overview: 
Attribute items are in ARC/INFO feature class format. Additional
items that were added to the data are:

POLYGON:

attribute	description
---------	-----------
 slide		a binary designator identifying a landslide polygon.
		1=landslide    0=no landslide (donut hole)
 type		a narrative to describe a very few of the polygons.
		Mostly blank.

LINE:

attribute	description
---------	-----------
 scarp		a binary designator identifying a scarp.
		1=scarp   0=no scarp, landslide line
Entity_and_Attribute_Detail_Citation: none

Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey, Information Services
Contact_Address:
Address_Type: mailing address
Address: Box 25286, Mail Stop 306
City: Denver
State_or_Province: Colorado
Postal_Code: 80225
Country: USA
Contact_Voice_Telephone: 1-888-ASK-USGS
Contact_Facsimile_Telephone: 303-202-4693
Distribution_Liability:
Although these data have been used by the U.S. Geological Survey, no warranty, expressed or implied is made by the USGS as to the accuracy of the data and related material nor shall the fact of distribution constitute any such warranty, and no responsibility is assumed by the USGS in connection therewith.

Metadata_Reference_Information:
Metadata_Date: 2000
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: John Michael
Contact_Organization: U.S. Geological Survey
Contact_Address:
Address_Type: mailing address
Address: Box 25046, Mail Stop 966
City: Denver
State_or_Province: Colorado
Postal_Code: 80225
Country: USA
Contact_Voice_Telephone: 303-273-8562
Contact_Electronic_Mail_Address: jmichael@usgs.gov
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Access_Constraints: none
Metadata_Use_Constraints: none
Generated by mp version 2.4.10 on Fri Oct 13 14:21:33 2000