Interpretation of Sidescan-sonar Imagery in the John Day Reservoir

Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Entity_and_Attribute_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: David C. Twichell

Publication_Date: 2004

Title:

Interpretation of Sidescan-sonar Imagery in the John Day Reservoir

Geospatial_Data_Presentation_Form: vector digital data

Online_Linkage:

Larger_Work_Citation:

Citation_Information:

Originator: VeeAnn A. Cross

Originator: David C. Twichell

Publication_Date: 2004

Title:

Geophysical, Sedimentologic, and Photographic Data from the John Day Reservoir, Washington and Oregon: Data Archive and Preliminary Discussion

Series_Information:

Series_Name: Open-File Report

Issue_Identification: 2004-1014

Publication_Information:

Publication_Place: Woods Hole Science Center, Woods Hole, MA

Publisher: U.S. Geological Survey

Description:

Abstract:

A two-week field operation was conducted in the John Day Reservoir on the Columbia River to image the floor of the pool, to measure the distribution and thickness of post-impoundment sediment, and to verify these geophysical data with video photography and bottom sediment samples. The field program was a cooperative effort between the USGS Coastal and Marine Geology Team of the Geologic Division and the USGS Columbia River Research Laboratory of the Biological Resources Division. The data collection was completed aboard the R/V ESTERO during September 13-27, 2000. The interest in sediment accumulation in the reservoir was two-fold. First, it was unknown how effective this reservoir was as a sediment trap to material that otherwise would have been transported down-river to the estuary and eventually to the ocean. The recent erosion of beaches along the Washington coast has been attributed to a decreased contribution of sediment from the Columbia River to the coastal system due to the damming of the river. Second, sediment accumulation on the floors of reservoirs along the Columbia River has been suggested to be diminishing salmon spawning grounds. The extent of changes in habitat since construction of the John Day Dam, however, had not been documented. Common data sets were needed to address both of these questions, and for these reasons this geophysical and sampling program was undertaken.

Purpose:

This shapefile is intended to provide an interpretation of the sidescan-sonar imagery collected in the John Day Reservoir.

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20000911

Ending_Date: 20000922

Currentness_Reference: ground condition

Status:

Progress: Complete

Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -120.683233

East_Bounding_Coordinate: -119.327509

North_Bounding_Coordinate: 45.934511

South_Bounding_Coordinate: 45.687974

Keywords:

Theme:

Theme_Keyword_Thesaurus: General

Theme_Keyword: ArcView

Theme_Keyword: CMGP

Theme_Keyword: Coastal and Marine Geology Program

Theme_Keyword: geologic map

Theme_Keyword: geology

Theme_Keyword: lake

Theme_Keyword: OF 2004-1014

Theme_Keyword: polygon

Theme_Keyword: reservoir

Theme_Keyword: sediment

Theme_Keyword: shapefile

Theme_Keyword: U.S. Geological Survey

Theme_Keyword: USGS

Theme_Keyword: Woods Hole Science Center

Place:

Place_Keyword_Thesaurus: General

Place_Keyword: Columbia River

Place_Keyword: John Day Dam

Place_Keyword: John Day Reservoir

Place_Keyword: Lake Umatilla

Place_Keyword: McNary Dam

Place_Keyword: North America

Place_Keyword: Oregon

Place_Keyword: Pacific Ocean

Place_Keyword: United States

Place_Keyword: Washington

Access_Constraints: None.

Use_Constraints:

The U.S. Geological Survey must be referenced as the originator of the dataset in any future products or research derived from these data.

Point_of_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: David C. Twichell

Contact_Organization: U.S. Geological Survey

Contact_Position: Oceanographer

Contact_Address:

Address_Type: mailing and physical address

Address: 384 Woods Hole Rd.

City: Woods Hole

State_or_Province: MA

Postal_Code: 02543-1598

Contact_Voice_Telephone: (508) 548-8700 x2266

Contact_Facsimile_Telephone: (508) 457-2310

Contact_Electronic_Mail_Address: dtwichell@usgs.gov

Native_Data_Set_Environment:

Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 4; ESRI ArcCatalog 8.2.0.700

Data_Quality_Information:

Lineage:

Process_Step:

Process_Description:

Using the mosaicked sidescan-sonar imagery as a backdrop, polygons were digitized in ArcView 3.3 representing different interpreted areas.

Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: David C. Twichell

Contact_Organization: U.S. Geological Survey

Contact_Position: Oceanographer

Contact_Address:

Address_Type: mailing and physical address

Address: 384 Woods Hole Rd.

City: Woods Hole

State_or_Province: MA

Postal_Code: 02543-1598

Contact_Voice_Telephone: (508) 548-8700 x2266

Contact_Facsimile_Telephone: (508) 457-2310

Contact_Electronic_Mail_Address: dtwichell@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: G-polygon

Point_and_Vector_Object_Count: 195

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Geographic:

Latitude_Resolution: 0.000000

Longitude_Resolution: 0.000000

Geographic_Coordinate_Units: Decimal degrees

Geodetic_Model:

Horizontal_Datum_Name: North American Datum of 1983

Ellipsoid_Name: Geodetic Reference System 80

Semi-major_Axis: 6378137.000000

Denominator_of_Flattening_Ratio: 298.257222

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: ss_interpretation

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: ID

Attribute_Definition: Automatically generated number during feature creation.

Attribute_Definition_Source: Software generated.

Attribute:

Attribute_Label: BACKSCAT

Attribute_Definition: Indicator of backscatter intensity.

Attribute_Definition_Source: Scientist.

Attribute_Domain_Values:

Unrepresentable_Domain: character set

Attribute:

Attribute_Label: INTERP

Attribute_Definition:

Interpretation of what is present on the floor of the John Day Reservoir based on the sidescan-sonar imagery.

Attribute_Definition_Source: Scientist.

Attribute_Domain_Values:

Unrepresentable_Domain: character set

Attribute:

Attribute_Label: TIMING

Attribute_Definition:

Indication of whether the interpreted feature was developed pre- or post-impoundment (formation of the John Day Reservoir).

Attribute_Definition_Source: Scientist.

Attribute_Domain_Values:

Unrepresentable_Domain: character set

Attribute:

Attribute_Label: DEP_TYPE

Attribute_Definition:

Indicates whether the interpreted feature is basement, fluvially generated deposit, post-impoundment sand, or post-impoundment mud.

Attribute_Definition_Source: Scientist.

Attribute_Domain_Values:

Unrepresentable_Domain: character set

Attribute:

Attribute_Label: AREA

Attribute_Definition:

Area (square meters calculated using Washington State Plane South, NAD83 projection) of each individual polygon.

Attribute_Definition_Source: Software generated.

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 3490.246

Range_Domain_Maximum: 14770057.024

Attribute_Units_of_Measure: square meters

Attribute:

Attribute_Label: PERIMETER

Attribute_Definition:

Perimeter (meters calculated using Washington State Plane South, NAD83 projection) of each individual polygon.

Attribute_Definition_Source: Scientist.

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 230.701

Range_Domain_Maximum: 104394.129

Attribute_Units_of_Measure: meters

Overview_Description:

Entity_and_Attribute_Overview:

Dep_type contains Miocene, Quaternary, and boulders. The boulders are believed to be deposited as a result of the Missoula floods, so the argument could be made that these are fluvial deposits. However, in this case, fluvial deposits refers to more modern deposits formed as a result of the Columbia River pre-impoundment. The Area and Perimeter calculations were done in ArcView 3.3 using the sample script calcapl.ave. The view projection was defined as Washington State Plane South, NAD83 in order to have the units in meters and be consistent with the projected sidescan-sonar imagery.

Distribution_Information:

Distributor:

Contact_Information:

Contact_Person_Primary:

Contact_Person: David C. Twichell

Contact_Organization: U.S. Geological Survey

Contact_Position: Oceanographer

Contact_Address:

Address_Type: mailing and physical address

Address: 384 Woods Hole Rd.

City: Woods Hole

State_or_Province: MA

Postal_Code: 02543-1598

Contact_Voice_Telephone: (508) 548-8700 x2266

Contact_Facsimile_Telephone: (508) 457-2310

Contact_Electronic_Mail_Address: dtwichell@usgs.gov

Resource_Description: Downloadable Data

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Name: shapefile

Transfer_Size: 0.259

Metadata_Reference_Information:

Metadata_Date: 20040325

Metadata_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: VeeAnn A. Cross

Contact_Organization: U.S. Geological Survey

Contact_Position: Marine Geologist

Contact_Address:

Address_Type: mailing and physical address

Address: 384 Woods Hole Rd.

City: Woods Hole

State_or_Province: MA

Postal_Code: 02543-1598

Contact_Voice_Telephone: (508) 548-8700 x2251

Contact_Facsimile_Telephone: (508) 457-2310

Contact_Electronic_Mail_Address: vatnipp@usgs.gov

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