Identification_Information: Citation: Citation_Information: Originator: Craig E. Dorman Publication_Date: 1968 Title: The southern Monterey Bay littoral cell: A preliminary sediment budget study Geospatial_Data_Presentation_Form: Paper Publication_Information: Publication_Place: Monterey, CA Publisher: United States Naval Postgraduate School Description: Abstract: A sediment budget was developed for southern Monterey Bay, California. This budget is based heavily upon sediment information obtained from field and laboratory studies. These studies included a detailed quasi-synoptic areal sampling to determine distribution of textural patterns, and a time-series study of beach and surf-zone sand samples obtained from local sand-mining companies. Results from these studies were combined with data on river discharge, the wind and wave regimes, and shoreline changes during the past century to develop quantitative estimates of sediment gains and losses to the cell. It was determined that the major sources of sediment are the discharge from the Salinas River which empties into the northeast corner of the cell, and erosion of Quaternary seacliffs which form the inner bay shore. Major sinks are the Monterey Submarine Canyon, active coastal dune fields, the mining companies, and the offshore area. The recent history of the sediment regime in the southern bay is reviewed, and a forecast of future nearshore changes is made. Recommendations for further work needed to refine the budget computations are presented. Purpose: This study deals with the sedimentary environment and the movement of sediments in the southern portion of Monterey Bay, California. The primary purpose of the work was to outline the major factors contributing to the sand budget of the area and to correlate these factors with the present areal patterns of textural properties of the beach and nearshore surface sediments. Because of the magnitude of the task of undertaking a total sand budget study and the incomplete nature of some of the data, emphasis was placed on delineation of the area distribution and seasonal variability of sediment patterns and on littoral transport. Quantitative evaluation of credits and debits to the budget was in most cases quite tentative. Supplemental_Information: Data digitized by the USGS for inclusion into usSEABED (http://walrus.wr.usgs.gov/usseabed) Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1968 Currentness_Reference: Publication date Status: Progress: Complete Maintenance_and_Update_Frequency: None Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -121.9343 East_Bounding_Coordinate: -121.8178 North_Bounding_Coordinate: 36.6785 South_Bounding_Coordinate: 36.6021 Keywords: Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: U.S. Navy Theme_Keyword: Postgraduate School Theme_Keyword: NPS 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 Structures Theme_Keyword: Sedimentary Textures Theme_Keyword: Stratigraphic Sequence Theme_Keyword: Terrigenous Sediments Place: Place_Keyword_Thesaurus: Geographic Names Information System (GNIS) Place_Keyword: Monterey Bay Place_Keyword: California Access_Constraints: Available at some libraries Use_Constraints: Cite Craig Dorman and the U.S. Naval Postgraduate School as the originators of the data. Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Naval Postgraduate School Contact_Address: Address_Type: Physical Address: 1 University Circle City: Monterey State_or_Province: CA Postal_Code: 93943 Contact_Voice_Telephone: 831.656.2441 Browse_Graphic: Browse_Graphic_File_Name: Dorman_MS_1968 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: Craig E. Dorman at the United States Naval Postgraduate School for the collection and analysis of data. For inclusion into usSEABED: Digitization (data): Jennifer Mendonca and Carolynn Box (USGS); locations: Nadine Golden (USGS). Formatting corrections: Jane Reid (USGS) and Chris Jenkins (University of Colorado). Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: Statistical data was digitized by hand (typed in), visually compared to source and corrected. Where appropriate, data were tested for completeness using MS Excel. Logical_Consistency_Report: Data fall within normal ranges for phi-size classes and Inman, 1952 sediment statistics. Completeness_Report: For usSEABED digitized data include Appendix D: Summary of cumulative percents and Appendix E: Summary of phi parameters and percentiles. Phi size class values were determined by iteratively subtracting adjacent cumulative percents. Pan sizes in mm were converted to phi values. Data not digitized include 95%, 84%, 50%, 16% and 05% percentiles, and weight percent of phi classes. Poor reproduction quality of the report did not allow for the location determinations of samples 66-148 and 339-397, which are not included in usSEABED. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Per report: Navigation for offshore stations numbered under 400 was by visual compass bearings. Fathograms and coastline photographs from each station were used for verification of position. Notations of these positions are believed to be accurate to within a 25-yard radius. Stations 401 to 420 were located by radar navigation, assisted by fathograms. The positions of these stations are believed accurate to within a 100-yard radius. Digitization report: Data locations were digitized using ArcGis 8.3 in August 2004 by scanning the location map and georeferencing the coastline to California coastline shapefile. Locations are given to 0.0001 decimal degrees. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: No water depths are given in the report. Lineage: Process_Step: Process_Description: Data collected on Naval Postgraduate School 63 foot research vessel using a Dietz-LaFond heavy duty grab and a locally modified clamshell mud snapper. Sample volumes averaged approximately 100 cc (250 grams) and a minimum of 30 grams was obtained at each station. Eleven sieves at half-phi intervals from 4 phi to 1 phi and one-phi intervals from 1 phi to -2 phi were used, with a minimum shaking time of 10 minutes, on samples dried at 140 degrees F for a minimum of 24 hours. Statistical values calculated using a program provided in the report. Process_Date: 1968 Source_Produced_Citation_Abbreviation: Dorman_MS_1968 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Naval Postgraduate School Contact_Address: Address_Type: Physical Address: 1 University Circle City: Monterey State_or_Province: CA Postal_Code: 93943 Contact_Voice_Telephone: 831.656.2441 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: 420 total; 171 useable Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: 0.0001 Longitude_Resolution: 0.0001 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: Pan size 3.962 Attribute_Definition: Sample value larger than 3.962 mm grain size Attribute_Definition_Source: Dorman, 1968 Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 100 Attribute_Units_of_Measure: Percent Attribute_Measurement_Resolution: 0.0001 Attribute: Attribute_Label: Pan size 1.981 Attribute_Definition: Sample value between 3.962 and 1.981 mm grain size Attribute_Definition_Source: Dorman, 1968 Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 100 Attribute_Units_of_Measure: Percent Attribute_Measurement_Resolution: 0.0001 Attribute: Attribute_Label: Pan size 0.991 Attribute_Definition: Sample value between 1.981 and 0.991 mm grain size Attribute_Definition_Source: Dorman, 1968 Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 100 Attribute_Units_of_Measure: Percent Attribute_Measurement_Resolution: 0.0001 Attribute: Attribute_Label: Pan size 0.495 Attribute_Definition: Sample value between 0.991 and 0.495 mm grain size Attribute_Definition_Source: Dorman, 1968 Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 100 Attribute_Units_of_Measure: Percent Attribute_Measurement_Resolution: 0.0001 Attribute: Attribute_Label: Pan size 0.351 Attribute_Definition: Sample value between 0.495 and 0.351 mm grain size Attribute_Definition_Source: Dorman, 1968 Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 100 Attribute_Units_of_Measure: Percent Attribute_Measurement_Resolution: 0.0001 Attribute: Attribute_Label: Pan size 0.246 Attribute_Definition: Sample value between 0.351 and 0.246 mm grain size Attribute_Definition_Source: Dorman, 1968 Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 100 Attribute_Units_of_Measure: Percent Attribute_Measurement_Resolution: 0.0001 Attribute: Attribute_Label: Pan size 0.175 Attribute_Definition: Sample value between 0.246 and 0.175 mm grain size Attribute_Definition_Source: Dorman, 1968 Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 100 Attribute_Units_of_Measure: Percent Attribute_Measurement_Resolution: 0.0001 Attribute: Attribute_Label: Pan size 0.124 Attribute_Definition: Sample value between 0.175 and 0.124 mm grain size Attribute_Definition_Source: Dorman, 1968 Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 100 Attribute_Units_of_Measure: Percent Attribute_Measurement_Resolution: 0.0001 Attribute: Attribute_Label: Pan size 0.088 Attribute_Definition: Sample value between 0.124 and 0.088 mm grain size Attribute_Definition_Source: Dorman, 1968 Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 100 Attribute_Units_of_Measure: Percent Attribute_Measurement_Resolution: 0.0001 Attribute: Attribute_Label: Pan size 0.061 Attribute_Definition: Sample value between 0.088 and 0.061 mm grain size Attribute_Definition_Source: Dorman, 1968 Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 100 Attribute_Units_of_Measure: Percent Attribute_Measurement_Resolution: 0.0001 Attribute: Attribute_Label: Pan size 0 Attribute_Definition: Sample value between 0.061 and 0 mm grain size Attribute_Definition_Source: Dorman, 1968 Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 100 Attribute_Units_of_Measure: Percent Attribute_Measurement_Resolution: 0.0001 Attribute: Attribute_Label: Median Attribute_Definition: Median of grain size distribution Attribute_Definition_Source: Inman,1952 Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.727 Range_Domain_Maximum: 3.286 Attribute_Units_of_Measure: Phi Attribute_Measurement_Resolution: 0.001 Attribute: Attribute_Label: Mean Attribute_Definition: Mean of grain size distribution Attribute_Definition_Source: Inman, 1952 Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.835 Range_Domain_Maximum: 3.533 Attribute_Units_of_Measure: Phi Attribute_Measurement_Resolution: 0.001 Attribute: Attribute_Label: Deviation Attribute_Definition: Standard deviation of grain size distribution (sorting) Attribute_Definition_Source: Inman, 1952 Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.31 Range_Domain_Maximum: 2.268 Attribute_Units_of_Measure: Phi Attribute_Measurement_Resolution: 0.001 Attribute: Attribute_Label: Skewness1 Attribute_Definition: First skewness of grain size distribution Attribute_Definition_Source: Inman, 1952 Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.483 Range_Domain_Maximum: 0.686 Attribute_Units_of_Measure: Unitless Attribute_Measurement_Resolution: 0.001 Attribute: Attribute_Label: Skewness2 Attribute_Definition: Second skewness of grain size distribution Attribute_Definition_Source: Inman, 1952 Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -1.848 Range_Domain_Maximum: 1.95 Attribute_Units_of_Measure: Phi Attribute_Measurement_Resolution: 0.001 Attribute: Attribute_Label: Kurtosis Attribute_Definition: Kurtosis Attribute_Definition_Source: Inman, 1952 Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -0.112 Range_Domain_Maximum: 3.277 Attribute_Units_of_Measure: Phi Attribute_Measurement_Resolution: 0.001 Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Naval Postgraduate School Contact_Address: Address_Type: Physical Address: 1 University Circle City: Monterey State_or_Province: CA Postal_Code: 93943 Contact_Voice_Telephone: 831.656.2441 Resource_Description: C. E. Dorman Masters 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 some libraries. Fees: None Available_Time_Period: Time_Period_Information: Single_Date/Time: Calendar_Date: 1968 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.