Current patterns and mass transport of clastic sediments in the near-shore regions of Monterey Bay

Metadata:

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

Identification_Information:

Citation:

Citation_Information:

Originator: Stephen Charles Wolf

Publication_Date: 1968

Title:

Current patterns and mass transport of clastic sediments in the near-shore regions of Monterey Bay

Geospatial_Data_Presentation_Form: Paper

Publication_Information:

Publication_Place: San Jose

Publisher: San Jose State College (University)

Other_Citation_Details: Field support given by Moss Landing Marine Labs.

Description:

Abstract:

"Three definable current patterns existed in Monterey Bay during the summer and fall of 1966, and early part of 1967. During that time changes from one pattern to the next closely paralleled seasonal changes peculiar to the Monterey Bay area. Currents over the central shelf region flowed with remarkable symmetry about the axis of the Monterey submarine canyon. Currents within the canyon were complex and extremely variable with frequent short lived changes in direction and velocity. Station observations indicated a direction of mass transport both northeast and southwest, into and out of the canyon proper. In late summer and early fall, water masses diverged upon reaching the canyon head, forming one current which flowed toward the northwest, and another toward the south. However, in early winter, all currents over the central shelf region flowed from south to north passing over the Monterey Canyon and giving rise to a more persistent down-canyon current. Well-sorted dark gray-green very fine sand and silt predominate over the central shelf region. Sediments contoured on the basis of median diameters form zones which roughly parallel the isobaths. Water masses entering the north shelf region in mid-winter, flowed from west to east to south in directions parallel to the curving coastline and to the isobaths farther seaward. Grey-green, fine grained sediments cover much of the north shelf region and are best sorted offshore. Grouping of grain sizes forms bands which are essentially parallel to the curving shoreline and isobaths. Currents flowing over the south shelf during mid-winter and early spring originated from the northwest. As these currents came upon Point Pinos they diverged in two directions, one branch flowed southward parallel to the west coast of the Monterey Peninsula, the other southeastward along the northeast coast which then swung northward parallel to the curving coastline. Medium to very fine grey-green sands are widely distributed over the south shelf, with the finer grained and best sorted sediments in the deeper portions. Grouping of grain sizes indicated trends much the same as those characteristic of the north and center shelf regions. Application of current and grain size data to the diagram prepared by Hjulstrom (1939) in which current velocity and particle size are related to conditions of erosion, transportation, and deposition show that sediments in the Monterey Bay area are under conditions of transport. Correlation of grain size distribution with observed current directions indicate mass transport of clastic materials in directions parallel to the isobaths in most cases."

Purpose:

"The purpose of this research was to determine directions and velocities of bottom and surface currents throughout the shelf regions of Monterey Bay and to relate this pattern to the distribution and transport of clastic materials."

Supplemental_Information:

The boundaries on the area studied are the San Lorenzo River to the north and Point Pinos in the south. Several samples were taken in the high tide zone and have been given a water depth of '0'. Grain size analyses were performed only on phi sizes 1.0 to 10, although comments in the text refer to coarse sand (samples 51 and 55), pebbles (sample 51), and shells (sample 52). Data digitized by the USGS for inclusion into usSEABED (<http://walrus.wr.usgs.gov/usseabed>)

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 1966

Ending_Date: 1967

Currentness_Reference: Publication date

Status:

Progress: Complete

Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -122.0000

East_Bounding_Coordinate: -121.7870

North_Bounding_Coordinate: 36.9625

South_Bounding_Coordinate: 36.6168

Keywords:

Theme:

Theme_Keyword_Thesaurus: None

Theme_Keyword: San Jose State University

Theme_Keyword: Clam bucket sampler

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: Sediment Composition

Theme_Keyword: Sedimentary Structures

Theme_Keyword: Sedimentary Textures

Theme_Keyword: Terrigenous Sediments

Place:

Place_Keyword_Thesaurus: Geographic Names Information System

Place_Keyword: California

Place_Keyword: Monterey Bay

Place_Keyword: Monterey Canyon

Place_Keyword: Point Pinos

Place:

Place_Keyword_Thesaurus: None

Place_Keyword: San Lorenzo Valley

Access_Constraints:

None. Thesis is available at the USGS Library and other libraries.

Use_Constraints:

Cite Steve Wolf and San Jose State University as originators of the data.

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: San Jose State University

Contact_Address:

Address_Type: Physical

Address: Geology Dept., Duncan Hall

City: San Jose

State_or_Province: CA

Postal_Code: 95192-0102

Contact_Voice_Telephone: (408) 924-5050

Contact_Facsimile_Telephone: 408) 924-5053

Hours_of_Service: 7:30 to 11:30 and 12:30 to 16:00

Browse_Graphic:

Browse_Graphic_File_Name: Wolf_MS_1968

Browse_Graphic_File_Description:

Sample distribution with coastline and bathymetry for reference.

Browse_Graphic_File_Type: .jpg

Data_Set_Credit:

Digitization: Stephen Charles Wolf at San Jose State University for the collection and analysis of data. For inclusion into usSEABED: Digitization: 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:

Locations and statistical data were digitized by hand (typed in), visually compared to source and corrected as needed. Where appropriate, data were tested for completeness using MS Excel.

Logical_Consistency_Report:

Data fall within normal ranges for phi-size classes and statistical values.

Completeness_Report: All data were digitized, except cumulative grain size values.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

Navigation by visual triangulation using a compass and USC&GS charts. Latitude/longitudes are given to minute-hundredths.

Vertical_Positional_Accuracy:

Vertical_Positional_Accuracy_Report: Water depths by Bathythermograph. Depths recorded in meters.

Lineage:

Process_Step:

Process_Description:

Marine bottom samples were obtained with a clam bucket type sampler from the schooner R/V Firefly; SCUBA gear may have been used on the shallower samples. Grain size distributions by settling tube. For inclusion in usSEABED, corrections as necessary to the grain size class values were made by comparison of written data to graphs.

Process_Date: 1967

Source_Produced_Citation_Abbreviation: Wolf_MS_68

Process_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: San Jose State University

Contact_Address:

Address_Type: Physical

Address: Geology Dept., Duncan Hall

City: San Jose

State_or_Province: CA

Postal_Code: 95192-0102

Contact_Voice_Telephone: (408) 924-5050

Contact_Facsimile_Telephone: 408) 924-5053

Hours_of_Service: 7:30 to 11:30 and 12:30 to 16:00

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: 48

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Geographic:

Latitude_Resolution: .00017

Longitude_Resolution: .00017

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: Depth

Attribute_Definition: Water depth

Attribute_Definition_Source: Source report

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0

Range_Domain_Maximum: 140

Attribute_Units_of_Measure: Meters

Attribute_Measurement_Resolution: 0.1

Attribute:

Attribute_Label: Md.

Attribute_Definition: Median grain size

Attribute_Definition_Source: Source report

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 1.09

Range_Domain_Maximum: 4.38

Attribute_Units_of_Measure: Phi

Attribute_Measurement_Resolution: 0.01

Attribute:

Attribute_Label: Q1

Attribute_Definition: First quartile of sample grain size distribution

Attribute_Definition_Source: Trask, 1932

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 1.4

Range_Domain_Maximum: 4.16

Attribute_Units_of_Measure: Phi

Attribute_Measurement_Resolution: 0.01

Attribute:

Attribute_Label: Q3

Attribute_Definition: Third quartile of sample grain size distribution

Attribute_Definition_Source: Trask, 1932

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.3

Range_Domain_Maximum: 4.1

Attribute_Units_of_Measure: Phi

Attribute_Measurement_Resolution: 0.01

Attribute:

Attribute_Label: So.

Attribute_Definition: Quartile sorting

Attribute_Definition_Source: Trask, 1932

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 1.12

Range_Domain_Maximum: 1.59

Attribute_Units_of_Measure: Phi

Attribute_Measurement_Resolution: 0.001

Attribute:

Attribute_Label: Sk.

Attribute_Definition: Quartile skewness

Attribute_Definition_Source: Trask, 1932

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0.22

Range_Domain_Maximum: 1.26

Attribute_Units_of_Measure: Unitless

Attribute_Measurement_Resolution: 0.001

Attribute:

Attribute_Label: Cumulative HT %

Attribute_Definition: Phi range 0 to 0.5

Attribute_Definition_Source: Source report, Wentworth, 1938

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0

Range_Domain_Maximum: 17.5

Attribute_Units_of_Measure: Percent

Attribute_Measurement_Resolution: 0.1

Attribute:

Attribute_Label: Cumulative HT %

Attribute_Definition: Phi range 0.5 to 1.0

Attribute_Definition_Source: Source report, Wentworth, 1938

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0

Range_Domain_Maximum: 14

Attribute_Units_of_Measure: Percent

Attribute_Measurement_Resolution: 0.1

Attribute:

Attribute_Label: Cumulative HT %

Attribute_Definition: Phi range 1 to 1.5

Attribute_Definition_Source: Source report, Wentworth, 1938

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0

Range_Domain_Maximum: 22.6

Attribute_Units_of_Measure: Percent

Attribute_Measurement_Resolution: 0.1

Attribute:

Attribute_Label: Cumulative HT %

Attribute_Definition: Phi range 1.5 to 1.75

Attribute_Definition_Source: Source report, Wentworth, 1938

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0

Range_Domain_Maximum: 10.6

Attribute_Units_of_Measure: Percent

Attribute_Measurement_Resolution: 0.1

Attribute:

Attribute_Label: Cumulative HT %

Attribute_Definition: Phi range 1.75 to 2.0

Attribute_Definition_Source: Source report, Wentworth, 1938

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0

Range_Domain_Maximum: 17.5

Attribute_Units_of_Measure: Percent

Attribute_Measurement_Resolution: 0.1

Attribute:

Attribute_Label: Cumulative HT %

Attribute_Definition: Phi range 20 to 2.125

Attribute_Definition_Source: Source report, Wentworth, 1938

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0

Range_Domain_Maximum: 30.9

Attribute_Units_of_Measure: Percent

Attribute_Measurement_Resolution: 0.1

Attribute:

Attribute_Label: Cumulative HT %

Attribute_Definition: Phi range 2.125 to 2.25

Attribute_Definition_Source: Source report, Wentworth, 1938

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0

Range_Domain_Maximum: 18.1

Attribute_Units_of_Measure: Percent

Attribute_Measurement_Resolution: 0.1

Attribute:

Attribute_Label: Cumulative HT %

Attribute_Definition: Phi range 2.25 to 2.4

Attribute_Definition_Source: Source report, Wentworth, 1938

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0

Range_Domain_Maximum: 16.1

Attribute_Units_of_Measure: Percent

Attribute_Measurement_Resolution: 0.1

Attribute:

Attribute_Label: Cumulative HT %

Attribute_Definition: Phi range 2.4 to 2.475

Attribute_Definition_Source: Source report, Wentworth, 1938

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0

Range_Domain_Maximum: 20.1

Attribute_Units_of_Measure: Percent

Attribute_Measurement_Resolution: 0.1

Attribute:

Attribute_Label: Cumulative HT %

Attribute_Definition: Phi range 2.475 to 2.64

Attribute_Definition_Source: Source report, Wentworth, 1938

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0

Range_Domain_Maximum: 15.3

Attribute_Units_of_Measure: Percent

Attribute_Measurement_Resolution: 0.1

Attribute:

Attribute_Label: Cumulative HT %

Attribute_Definition: Phi range 2.64 to 2.75

Attribute_Definition_Source: Source report, Wentworth, 1938

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0

Range_Domain_Maximum: 19.4

Attribute_Units_of_Measure: Percent

Attribute_Measurement_Resolution: 0.1

Attribute:

Attribute_Label: Cumulative HT %

Attribute_Definition: Phi range 2.75 to 2.84

Attribute_Definition_Source: Source report, Wentworth, 1938

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0

Range_Domain_Maximum: 13.1

Attribute_Units_of_Measure: Percent

Attribute_Measurement_Resolution: 0.1

Attribute:

Attribute_Label: Cumulative HT %

Attribute_Definition: Phi range 2.84 to 3

Attribute_Definition_Source: Source report, Wentworth, 1938

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0

Range_Domain_Maximum: 16.6

Attribute_Units_of_Measure: Percent

Attribute_Measurement_Resolution: 0.1

Attribute:

Attribute_Label: Cumulative HT %

Attribute_Definition: Phi range 3 to 3.25

Attribute_Definition_Source: Source report, Wentworth, 1938

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0

Range_Domain_Maximum: 14.4

Attribute_Units_of_Measure: Percent

Attribute_Measurement_Resolution: 0.1

Attribute:

Attribute_Label: Cumulative HT %

Attribute_Definition: Phi range 3.25 to 3.5

Attribute_Definition_Source: Source report, Wentworth, 1938

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0

Range_Domain_Maximum: 24.3

Attribute_Units_of_Measure: Percent

Attribute_Measurement_Resolution: 0.1

Attribute:

Attribute_Label: Cumulative HT %

Attribute_Definition: Phi range 3.5 to 3.75

Attribute_Definition_Source: Source report, Wentworth, 1938

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0

Range_Domain_Maximum: 30.8

Attribute_Units_of_Measure: Percent

Attribute_Measurement_Resolution: 0.1

Attribute:

Attribute_Label: Cumulative HT %

Attribute_Definition: Phi range 3.75 to 4

Attribute_Definition_Source: Source report, Wentworth, 1938

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0

Range_Domain_Maximum: 29.7

Attribute_Units_of_Measure: Percent

Attribute_Measurement_Resolution: 0.1

Attribute:

Attribute_Label: Cumulative HT %

Attribute_Definition: Phi range 4 to 4.25

Attribute_Definition_Source: Source report, Wentworth, 1938

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0

Range_Domain_Maximum: 26.2

Attribute_Units_of_Measure: Percent

Attribute_Measurement_Resolution: 0.1

Attribute:

Attribute_Label: Cumulative HT %

Attribute_Definition: Phi range 4.25 to 4.5

Attribute_Definition_Source: Source report, Wentworth, 1938

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0

Range_Domain_Maximum: 26.2

Attribute_Units_of_Measure: Percent

Attribute_Measurement_Resolution: 0.1

Attribute:

Attribute_Label: Cumulative HT %

Attribute_Definition: Phi range 4.5 to 5

Attribute_Definition_Source: Source report, Wentworth, 1938

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0

Range_Domain_Maximum: 29.3

Attribute_Units_of_Measure: Percent

Attribute_Measurement_Resolution: 0.1

Attribute:

Attribute_Label: Cumulative HT %

Attribute_Definition: Phi range 5 to 10

Attribute_Definition_Source: Source report, Wentworth, 1938

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0

Range_Domain_Maximum: 45.4

Attribute_Units_of_Measure: Percent

Attribute_Measurement_Resolution: 0.1

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey

Contact_Address:

Address_Type: Mail and physical

Address: 345 Middlefield Road

City: Menlo Park

State_or_Province: CA

Postal_Code: 94025

Contact_Voice_Telephone: 650.329.5026

Contact_Electronic_Mail_Address: men_lib@usgs.gov

Resource_Description: 536 (276) W6437c 1968

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 the limitations of the data due to possible imprecision due to navigational inaccuracies, statistical limitations, and digitizing errors.

Standard_Order_Process:

Non-digital_Form:

Report is available for viewing or checkout at the USGS library, Menlo Park, and at other libraries.

Fees: None

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: San Jose State University

Contact_Address:

Address_Type: Physical

Address: Geology Dept., Duncan Hall

City: San Jose

State_or_Province: CA

Postal_Code: 95192-0102

Contact_Voice_Telephone: (408) 924-5050

Hours_of_Service: 7:30 to 11:30 and 12:30 to 16:00

Resource_Description: Wolf MS thesis 1968

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 at libraries.

Fees: None

Technical_Prerequisites: None

Available_Time_Period:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 1998

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.