GE012
Landslide inventory (1953-1996), Andrews Experimental Forest and Blue River Basin

CREATOR(S): Frederick J. Swanson

PRINCIPAL INVESTIGATOR(S): Frederick J. Swanson

ORIGINATOR(S): Frederick J. Swanson

DATA SET CONTACT PERSON: Theresa J. Valentine

METADATA CONTACT: Theresa J. Valentine

ABSTRACTOR: George W. Lienkaemper

DISTRIBUTOR: Theresa J. Valentine

METADATA CREATION DATE:

3 Nov 2004

MOST RECENT METADATA REVIEW DATE:

6 Jan 2014

KEYWORDS:

Disturbance, geomorphology, mass movement, debris flows, landslides, disturbance, monitoring

PURPOSE:

These data collection efforts represent a variety of research objectives. Primarily data were collected to document landslide occurence in managed forest lands of the western Cascade Range and to assess the impact of road-building and timber harvest on landslide magnitude and frequency.

METHODS:

Processing Procedures - GE012:

Description: GE01201:Landslides represented in this data set aret shallow rapid slope failures - debris flows. Large slow-moving features, such as earthflows, are not included. Points have been screen digitized from field maps using streams, roads, contour lines, and harvest units as reference layers. Indvidual layers tied to inventories by Ted Dyrness, Fred Swanson, Dan Marion, and Matt Wallenstein were appended and linked to an info attribute file (slideinv.dat).

Instrumentation: Positional accuracy varies by component data set. The Dyrness and Swanson surveys were mapped onto 1:15840 Forest Service base maps. The accuracy of these base maps is unknown. The Marion and Wallenstein surveys utilized 1:24000 Forest Service Primary Base series maps, which to comply with National Map Accuracy Standards.

Citation: Landslide inventory field collections were conducted by Ted Dyrness, Fred Swanson, Dan Marion, and Matt Wallenstein. Data sets were provided by the Forest Science Data Bank, a partnership between the Department of Forest Science, Oregon State University, and the U.S. Forest Service Pacific Northwest Research Station, Corvallis, Oregon. Significant funding for these data was provided by the National Science Foundation Long-Term Ecological Research program (NSF Grant numbers BSR-90-11663 and DEB-96-32921).

Processing Procedures - GE012 (1):

Description: GE01202: Points have been screen digitized from field maps using streams, roads, contour lines, and harvest units as reference layers. Indvidual layers tied to inventories by Ted Dyrness, Fred Swanson, Dan Marion, and Matt Wallenstein were appended and linked to an info attribute file (slideinv.dat). This file was exported to a database format.

Instrumentation: Landslides represented in this data set aret shallow rapid slope failures - debris flows. Large slow-moving features, such as earthflows, are not included. Positional accuracy varies by component data set. The Dyrness and Swanson surveys were mapped onto 1:15840 Forest Service base maps. The accuracy of these base maps is unknown. The Marion and Wallenstein surveys utilized 1:24000 Forest Service Primary Base series maps, which to comply with National Map Accuracy Standards.

Citation: Landslide inventory field collections were conducted by Ted Dyrness, Fred Swanson, Dan Marion, and Matt Wallenstein. Data sets were provided by the Forest Science Data Bank, a partnership between the Department of Forest Science, Oregon State University, and the U.S. Forest Service Pacific Northwest Research Station, Corvallis, Oregon. Significant funding for these data was provided by the National Science Foundation Long-Term Ecological Research program (NSF Grant numbers BSR-90-11663 and DEB-96-32921).

Processing Procedures - GE012 (2):

Description: Data were converted from an Arc/GIS coverage to an esri shapefile and projected to NAD83. The attribute table was joined to the shapefile and created a new shapefile with slideinv_table.dbf info. Cleaned up fields that contained no records.

TAXONOMIC SYSTEM:

None

GEOGRAPHIC EXTENT:

Blue River Basin and Andrews Experimental Forest within the Willamette National Forest, western Cascades, Oregon, USA.

ELEVATION_MINIMUM (meters):

ELEVATION_MAXIMUM (meters):

PROGRESS DESCRIPTION:

Complete

UPDATE FREQUENCY DESCRIPTION:

notPlanned

CURRENTNESS REFERENCE:

Observed