Bed-sediment grain-size and morphologic data from Suisun, Grizzly, and Honker Bays, CA 1998-2002

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: Margaret A. Hampton

Originator: Noah P. Snyder

Originator: John L. Chin

Originator: Dan W. Allison

Originator: David M. Rubin

Publication_Date: 2003

Title:

Bed-sediment grain-size and morphologic data from Suisun, Grizzly, and Honker Bays, CA 1998-2002

Geospatial_Data_Presentation_Form: Digital

Series_Information:

Series_Name: Open-file report

Issue_Identification: 03-250

Publication_Information:

Publication_Place: Menlo Park, CA

Publisher: U.S. Geological Survey

Other_Citation_Details:

Data from USGS cruises J598SF (<http://walrus.wr.usgs.gov/infobank/j/j598sf/html/j-5-98-sf.meta.html>), J299SF (<http://walrus.wr.usgs.gov/infobank/j/j299sf/html/j-2-99-sf.meta.html>), J399SF (<http://walrus.wr.usgs.gov/infobank/j/j399sf/html/j-3-99-sf.meta.html>), J100SF (<http://walrus.wr.usgs.gov/infobank/j/j100sf/html/j-1-00-sf.meta.html>), P100SF (<http://walrus.wr.usgs.gov/infobank/p/p100sf/html/p-1-00-sf.meta.html>), P200SF (<http://walrus.wr.usgs.gov/infobank/p/p200sf/html/p-2-00-sf.meta.html>), P101SF (<http://walrus.wr.usgs.gov/infobank/p/p101sf/html/p-1-01-sf.meta.html>), P201SF (<http://walrus.wr.usgs.gov/infobank/p/p201sf/html/p-2-01-sf.meta.html>), P301SF (<http://walrus.wr.usgs.gov/infobank/p/p301sf/html/p-3-01-sf.meta.html>), P401SF (<http://walrus.wr.usgs.gov/infobank/p/p401sf/html/p-4-01-sf.meta.html>), and P102SF (<http://walrus.wr.usgs.gov/infobank/p/p102sf/html/p-1-02-sf.meta.html>.

Online_Linkage: <http://geopubs.wr.usgs.gov/open-file/of03-250/of03-250.pdf>

Description:

Abstract:

"The USGS Place Based Studies Program for San Francisco Bay investigates this sensitive estuarine system to aid in resource management. As part of the inter-disciplinary research program, the USGS collected side-scan sonar data and bed-sediment samples from north San Francisco Bay to characterize bed-sediment texture and investigate temporal trends in sedimentation. The study area is located in central California and consists of Suisun Bay, and Grizzly and Honker Bays, sub-embayments of Suisun Bay. During the study (1998-2002), the USGS collected three side-scan sonar data sets and approximately 300 sediment samples. The side-scan data revealed predominantly fine-grained material on the bay floor. We also mapped five different bottom types from the data set, categorized as featureless, furrows, sand waves, machine-made, and miscellaneous. We performed detailed grain-size and statistical analyses on the sediment samples. Overall, we found that grain size ranged from clay to fine sand, with the coarsest material in the channels and finer material located in the shallow bays. Grain-size analyses revealed high spatial variability in size distributions in the channel areas. In contrast, the shallow regions exhibited low spatial variability and consistent sediment size over time."

Purpose:

" ........ to characterize bed-sediment texture and investigate temporal trends in sedimentation."

Supplemental_Information:

Specific cruise identifications with links to metadata provided by the USGS Coastal and Marine Geology team's Infobank are given in table 1 of the report. Data included in usSEABED (<http://walrus.wr.usgs.gov/usseabed>)

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 19981125

Ending_Date: 20020123

Currentness_Reference: Publication date

Status:

Progress: Complete

Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -122.14047

East_Bounding_Coordinate: -121.93249

North_Bounding_Coordinate: 38.15529

South_Bounding_Coordinate: 38.03148

Keywords:

Theme:

Theme_Keyword_Thesaurus: ISO 19115 Topic Category

Theme_Keyword: Oceans and Estuaries

Theme_Keyword: Location

Theme_Keyword: GeoscientificInformation

Theme:

Theme_Keyword_Thesaurus:

NASA/Global Change Master Directory (GCMD) Earth Science Keyword. Version 5.3.3

Theme_Keyword: Marine Sediments

Theme_Keyword: Sedimentary Textures

Theme_Keyword: Terrigenous Sediments

Theme:

Theme_Keyword_Thesaurus: None

Theme_Keyword: U.S. Geological Survey

Theme_Keyword: Coastal and Marine Geology Program

Theme_Keyword: Place Based Studies for San Francisco Bay

Theme_Keyword: Box core

Theme_Keyword: Van Veen grab sampler

Place:

Place_Keyword_Thesaurus: Geographic Names Information System

Place_Keyword: Suisun Bay

Place_Keyword: Grizzly Bay

Place_Keyword: Honker Bay

Place_Keyword: California

Access_Constraints:

Report is available online in PDF format; Adobe Acrobat Reader required to view.

Use_Constraints: Cite the U.S. Geological Survey as the originators of the data.

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: United States Geological Survey

Contact_Address:

Address_Type: Mail

Address: USGS Information Services

Address: Box 25286

City: Denver

State_or_Province: CO

Postal_Code: 80225

Contact_Voice_Telephone: 1-800-ASK-USGS

Browse_Graphic:

Browse_Graphic_File_Name: OFR_03-250

Browse_Graphic_File_Description:

Screen grab of GIS-produced sample distribution, with bathymetry and land for reference.

Browse_Graphic_File_Type: JPG

Data_Set_Credit:

Margaret A. Hampton, Noah P. Snyder, John L. Chin, Dan W. Allison, David M. Rubin at the United States geological Survey for the collection and analysis of the data. For usSEABED, formatting: Jane Reid (USGS); Formatting corrections: Jane Reid (USGS) and Chris Jenkins (University of Colorado)

Native_Data_Set_Environment:

Tkme: Another editor for formal metadata by Peter N. Schweitzer (U.S. Geological Survey, Reston, VA 22092), version 2.9.13, Microsoft Windows Version 5.1; Microsoft Word 2000 9.0

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

See report ://geopubs.wr.usgs.gov/open-file/of03-250/of03-250.pdf. For usSEABED, digitized data were incorporated as is. Where appropriate, data were tested for completeness using MS Excel. Locations checked using GIS.

Logical_Consistency_Report:

From the report: "In order to facilitate comparisons between the samples, we omitted the coarsest material (>1 mm) from the RV Johnston samples for the computer analysis. We made this change for two reasons: 1) this size category was processed using different methods at various times during the study, and therefore not quantitatively comparable; and 2) we found that in nearly every case the coarsest material was predominately composed of shells and not elastic sediment. By omitting this category from the analysis, we aided comparisons between the data sets, and reduced skewing of the statistics by non-bed-sediment material. However, we chose not to omit this size fraction from the RV Polaris analyses due to the consistent methodology used in processing the samples."

Completeness_Report:

See report. For inclusion into usSEABED, all data in the report were included.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

See report <http://geopubs.wr.usgs.gov/open-file/of03-250/of03-250.pdf>

Vertical_Positional_Accuracy:

Vertical_Positional_Accuracy_Report:

See report <http://geopubs.wr.usgs.gov/open-file/of03-250/of03-250.pdf>

Lineage:

Process_Step:

Process_Description:

See report: <http://geopubs.wr.usgs.gov/open-file/of03-250/of03-250.pdf>

Process_Date: Unknown

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: 280

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Geographic:

Latitude_Resolution: 0.00001

Longitude_Resolution: 0.00001

Geographic_Coordinate_Units: Decimal degrees

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: Point

Entity_Type_Definition: SDTS point

Entity_Type_Definition_Source: Source report

Attribute:

Attribute_Label: Sample number

Attribute_Definition: Sample number

Attribute_Definition_Source: US Geological Survey

Attribute_Domain_Values:

Unrepresentable_Domain: Alpha numeric number based on cruise and core information

Attribute:

Attribute_Label: Subsample depth

Attribute_Definition: Depth of subsample within sample (top = 0)

Attribute_Definition_Source: Source report

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0

Range_Domain_Maximum: 0.01

Attribute_Units_of_Measure: Meters

Attribute_Measurement_Resolution: 0.01

Attribute:

Attribute_Label: Gravel

Attribute_Definition: Amount of gravel in subsample

Attribute_Definition_Source: Source report

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0

Range_Domain_Maximum: 16.45

Attribute_Units_of_Measure: Percent

Attribute_Measurement_Resolution: 0.01

Attribute:

Attribute_Label: Sand

Attribute_Definition: Amount of sand in subsample

Attribute_Definition_Source: Source report

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.17

Range_Domain_Maximum: 99.51

Attribute_Units_of_Measure: Percent

Attribute_Measurement_Resolution: 0.01

Attribute:

Attribute_Label: Silt

Attribute_Definition: Amount of silt in subsample

Attribute_Definition_Source: Source report

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.35

Range_Domain_Maximum: 72.32

Attribute_Units_of_Measure: Percent

Attribute_Measurement_Resolution: 0.01

Attribute:

Attribute_Label: Clay

Attribute_Definition: Amount of clay in subsample

Attribute_Definition_Source: Source report

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.09

Range_Domain_Maximum: 69.85

Attribute_Units_of_Measure: Percent

Attribute_Measurement_Resolution: 0.01

Attribute:

Attribute_Label: Mud

Attribute_Definition: Amount of mud in subsample

Attribute_Definition_Source: Source report

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.49

Range_Domain_Maximum: 99.83

Attribute_Units_of_Measure: Percent

Attribute_Measurement_Resolution: 0.01

Attribute:

Attribute_Label: Median

Attribute_Definition: Median grain size

Attribute_Definition_Source: Source report

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 1.1

Range_Domain_Maximum: 9.34

Attribute_Units_of_Measure: Phi

Attribute_Measurement_Resolution: 0.01

Attribute:

Attribute_Label: Mean

Attribute_Definition: First moment of grain-size distribution (mean)

Attribute_Definition_Source: Source report

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 1.21

Range_Domain_Maximum: 9.54

Attribute_Units_of_Measure: Phi

Attribute_Measurement_Resolution: 0.01

Attribute:

Attribute_Label: Sorting

Attribute_Definition: Second moment of grain-size distribution (standard deviation)

Attribute_Definition_Source: Source report

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.58

Range_Domain_Maximum: 3.8

Attribute_Units_of_Measure: Phi

Attribute_Measurement_Resolution: 0.01

Attribute:

Attribute_Label: Skewness

Attribute_Definition: Third moment of grain-size distribution (skewness)

Attribute_Definition_Source: Source report

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: -1.02

Range_Domain_Maximum: 5.74

Attribute_Units_of_Measure: Unitless

Attribute_Measurement_Resolution: 0.01

Attribute:

Attribute_Label: Kurtosis

Attribute_Definition: Fourth moment of grain-size distribution (kurtosis)

Attribute_Definition_Source: Source report

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 1.65

Range_Domain_Maximum: 73.13

Attribute_Units_of_Measure: Unitless

Attribute_Measurement_Resolution: 0.01

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: United States Geological Survey

Contact_Address:

Address_Type: Mail

Address: USGS Information Services

Address: Box 25286

City: Denver

State_or_Province: CO

Postal_Code: 80225

Contact_Voice_Telephone: 1-800-ASK-USGS

Resource_Description: Open file report 03-250

Distribution_Liability:

Although this dataset has been used by the USGS, no warranty, expressed or implied, is made by the USGS as to the accuracy of the data. Users of the data should be aware of limitations of the data due to possible imprecision due to navigational inaccuracies and limitations of the statistical data.

Standard_Order_Process:

Non-digital_Form:

Report is available through the USGS; available online at: <http://geopubs.wr.usgs.gov/open-file/of03-250/of03-250.pdf>

Fees: None

Technical_Prerequisites:

Adobe Acrobat required: Download: <http://www.adobe.com/products/acrobat/readermain.html>

Available_Time_Period:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 2003

Metadata_Reference_Information:

Metadata_Date: 2005

Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey

Contact_Person: Jane A. Reid

Contact_Position: Geologist

Contact_Address:

Address_Type: Physical and mail

Address: 400 Natural Bridges Drive

City: Santa Cruz

State_or_Province: CA

Postal_Code: 95060

Contact_Voice_Telephone: 831-427-4727

Contact_Electronic_Mail_Address: jareid@usgs.gov

Contact_Instructions: Email preferred

Metadata_Standard_Name: CSDGM Version 2

Metadata_Standard_Version: FGDC-STD-001-1998

Metadata_Access_Constraints: None

Metadata_Use_Constraints:

Metadata was written by a user of the data. Any information contained in the physical report is authoritative and supercedes any information given here.