Identification_Information: Citation: Citation_Information: Originator: Alisha M. Ellis Originator: Marci E. Marot Originator: Cathryn J. Wheaton Originator: Julie C. Bernier Originator: Christopher G. Smith Publication_Date: 20151205 Title: Chincoteague Bay calculated shear stress data from the spring and fall sampling trips of 2014 and preliminary modeled bottom shear stress values provided by the Wood’s Hole USGS office. Geospatial_Data_Presentation_Form: tabular digital data Series_Information: Series_Name: U.S. Geological Survey Open-File Report Issue_Identification: 2015-1219 Online_Linkage: http://pubs.usgs.gov/of/2015/1219/images/CTB-Tables/14CTB_Spring-and-Fall_Shear-Stress.zip Larger_Work_Citation: Citation_Information: Originator: Alisha M. Ellis Originator: Marci E. Marot Originator: Cathryn J. Wheaton Originator: Julie C. Bernier Originator: Christopher G. Smith Publication_Date: 20151205 Title: A seasonal comparison of surface sediment characteristics in Chincoteague Bay, Maryland and Virginia, USA Edition: 1.0 Geospatial_Data_Presentation_Form: multimedia presentation Series_Information: Series_Name: U.S. Geological Survey Open-File Report Issue_Identification: 2015-1219 Publication_Information: Publication_Place: St. Petersburg, Florida Publisher: U.S. Geological Survey - St. Petersburg Coastal and Marine Science Center Online_Linkage: http://dx.doi.org/10.3133/ofr20151219 Description: Abstract: Scientists from the U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center conducted a seasonal collection of surficial sediments from Chincoteague Bay and Tom's Cove, located between Assateague Island and the Delmarva Peninsula in March/April 2014 (2014-301-FA) and October 2014 (2014-322-FA). The sampling efforts were part of a larger U.S. Geological Survey study to assess the effects of storm events on sediment distribution. The objective of this study was to characterize the sediments of Chincoteague Bay in order to create baseline conditions to incorporate with hydrodynamic and sediment transport models in order to evaluate pre- and post-storm (Hurricane Sandy) change. This report serves as an archive for sedimentological data derived from the surface sediment. Data are available for a seasonal comparison between March/April 2014 and October 2014. Downloadable data are available as Excel spreadsheets (sediment samples) and as JPEG files (maps). Additional files include: detailed results of sediment grain size analyses, and formal Federal Geographic Data Committee metadata (data downloads). Purpose: The file includes all critical stress threshold calculations from the median grain-size of the lagoonal surface sediments collected in Chincoteague Bay in March/April and October 2014 by the U.S. Geological Survey (USGS), St. Petersburg Coastal and Marine Science Center as well as preliminary model bottom shear stress values from the Woods Hole USGS office. Supplemental_Information: This publication contains data for two field activities conducted in 2014: Spring March 26 – April 4 (2014-301-FA), 2014; and fall October 21 – 30, 2014 (2014-322-FA). Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20140326 Ending_Date: 20141030 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -75.46667 East_Bounding_Coordinate: -75.11111 North_Bounding_Coordinate: 38.26667 South_Bounding_Coordinate: 37.82222 Keywords: Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: lagoon Theme_Keyword: sediment Theme_Keyword: surface Theme_Keyword: critical shields parameter Theme_Keyword: critical stress threshold Theme_Keyword: Mean Wave-Current Bottom Shear Stress during Fairweather Theme_Keyword: Max Wave-Current Bottom Shear Stress during Fairweather Theme_Keyword: D* Theme_Keyword: U.S. Geological Survey Theme_Keyword: USGS Theme_Keyword: U.S. Geological Survey St. Petersburg Coastal and Marine Science Center Place: Place_Keyword_Thesaurus: Geographic Names Information System (GNIS) Place_Keyword: Maryland Place_Keyword: Virginia Place_Keyword: Chincoteague Bay Place_Keyword: Tom’s Cove Place_Keyword: Assateague Island Stratum: Stratum_Keyword_Thesaurus: None Stratum_Keyword: sediment Stratum_Keyword: surface Temporal: Temporal_Keyword_Thesaurus: None Temporal_Keyword: March 2014 Temporal_Keyword: April 2014 Temporal_Keyword: October 2014 Access_Constraints: none Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey - St. Petersburg Coastal and Marine Science Center Contact_Person: Alisha M. Ellis Contact_Position: Geologist Contact_Address: Address_Type: Mailing and physical Address: 600 4th Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: US Contact_Voice_Telephone: (727) 502-8056 Contact_Electronic_Mail_Address: aellis@usgs.gov Data_Set_Credit: U.S. Geological Survey Native_Data_Set_Environment: Apple OS X Yosemite Version 10.10.5; Microsoft Excel for Mac 2011 Version 14.5.5 Use_Constraints: The U.S. Geological Survey requests that it be referenced as the originator of this dataset in any future products or research derived from these data. Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: The critical stress threshold calculations reported in the tables were analyzed at the USGS SPCMSC sedimentology lab. These data have not been independently verified for accuracy. Logical_Consistency_Report: The data also includes preliminary model values for bottom shear stress under fair-weather condense from the USGS Woods Hole office. Completeness_Report: This is a complete processed physical parameters data file for the spring and fall Chincoteague Bay seasonal comparison archive. Lineage: Process_Step: Process_Description: Critical stress thresholds (τcr) for the surface sediments of Chincoteague Bay were calculated using the grain-size data for the surface sediments collected during the spring and fall sampling trips of 2014 following the procedure of Soulsby (1997) as τcr = θcr (ρs - ρ) d50 where θcr is the critical Shields parameter, ρs is the density of sediment (estimated to be 2,650 kilograms per cubic meter [kg/m3]), ρ is the density of seawater (1,027 kg/m3), and d50 is the median grain-size for an individual sample. Process_Date: 2014 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey St. Petersburg Coastal and Marine Science Center Contact_Person: Alisha M. Ellis Contact_Position: Geologist Contact_Address: Address_Type: Mailing and physical Address: 600 4th Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: U.S. Contact_Voice_Telephone: (727) 502-8056 Contact_Electronic_Mail_Address: aellis@usgs.gov Process_Step: Process_Description: The critical Shields parameter is calculated from a dimensionless sediment parameter, D*, as θcr = 0.30/(1+1.2D*) + 0.055 [1 – exp (-0.020D*)] with D* defined from the kinematic viscosity (v, taken as 1.36 × 10-6 meters squared per second [m2/s]) and uses gravity (g, 9.81 meters per second squared [m/s2]) as D* = d50 [g([(ρs )⁄ρ]-1)/v^2 ]^(1/3). Process_Date: 2014 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey St. Petersburg Coastal and Marine Science Center Contact_Person: Alisha M. Ellis Contact_Position: Geologist Contact_Address: Address_Type: Mailing and physical Address: 600 4th Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: U.S. Contact_Voice_Telephone: (727) 502-8056 Contact_Electronic_Mail_Address: aellis@usgs.gov Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: 14CTB_Spring and Fall_Shear Stress.xlsx.zip Entity_Type_Definition: Physical lithological parameter results of surface sediment collected in Chincoteague Bay, Maryland and Virginia. Entity_Type_Definition_Source: USGS Attribute: Attribute_Label: Sample ID Attribute_Definition: Sample identification number Attribute_Definition_Source: USGS Attribute_Domain_Values: Unrepresentable_Domain: Character string. ##CTB-^^ Physical Data.xlxs (where # is the two digit year, and ^^ is the site location type, where G are lagoonal PONAR grab sites). Attribute: Attribute_Label: Latitude Attribute_Definition: Latitude of sample location in decimal degrees (NAD83) Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 37.87006 Range_Domain_Maximum: 38.24602 Attribute_Units_of_Measure: decimal degrees Attribute_Measurement_Resolution: 0.00001 Attribute: Attribute_Label: Longitude Attribute_Definition: Longitude of sample location in decimal degrees (NAD83) Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -75.41255 Range_Domain_Maximum: -75.18492 Attribute_Units_of_Measure: decimal degrees Attribute_Measurement_Resolution: 0.00001 Attribute: Attribute_Label: D50 Attribute_Definition: median grain-size. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 5.62 Range_Domain_Maximum: 460.32 Attribute_Units_of_Measure: microns Attribute_Measurement_Resolution: 0.01 Attribute: Attribute_Label: D* Attribute_Definition: defined from kinematic viscosity, gravity, difference in sediment water density, and median grain-size. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.1142 Range_Domain_Maximum: 9.3052 Attribute_Units_of_Measure: dimensionless/unitless Attribute_Measurement_Resolution: 0.0001 Attribute: Attribute_Label: Critical Shields Parameter Attribute_Definition: calculated from D* Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.0339 Range_Domain_Maximum: 0.2640 Attribute_Units_of_Measure: dimensionless/unitless Attribute_Measurement_Resolution: 0.00001 Attribute: Attribute_Label: Critical Stress Threshold Attribute_Definition: the amount of energy required to move a sediment particle as calculated from the definition in the paper Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.0236 Range_Domain_Maximum: 0.2486 Attribute_Units_of_Measure: Pascals Attribute_Measurement_Resolution: 0.0001 Attribute: Attribute_Label: Mean Wave-Current Bottom Shear Stress during Fairweather (Pa) Attribute_Definition: The average wave-current bottom shear stress value for a single sample site extrapolated from the model under fairweather conditions. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.0100 Range_Domain_Maximum: 0.7490 Attribute_Units_of_Measure: Pascals Attribute_Measurement_Resolution: 0.0001 Attribute: Attribute_Label: Max Wave-Current Bottom Shear Stress during Fairweather (Pa) Attribute_Definition: The maximum wave-current bottom shear stress value for a single sample site extrapolated from the model under fairweather conditions. Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.0604 Range_Domain_Maximum: 2.1821 Attribute_Units_of_Measure: Pascals Attribute_Measurement_Resolution: 0.0001 Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey St. Petersburg Coastal and Marine Science Center Contact_Person: Alisha M. Ellis Contact_Address: Address_Type: Mailing and physical Address: 600 4th Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: U.S. Contact_Voice_Telephone: 502-8056 Contact_Electronic_Mail_Address: aellis@usgs.gov Distribution_Liability: Although these data have been processed successfully on a computer system at the U.S. Geological Survey, no warranty expressed or implied is made regarding the display or utility of the data on any other system, nor shall the act of distribution imply any such warranty. The U.S. Geological Survey shall not be held liable for improper or incorrect use of the data described and (or) contained herein. Any use of trade, firm, or product name is for descriptive purposes only and does not imply endorsement by the U.S. Government. Standard_Order_Process: Fees: none Digital_Form: Digital_Transfer_Information: Format_Name: Microsoft Excel Worksheet 2011 Format_Version_Number: 1 Format_Specification: .xlxs Transfer_Size: 0.054 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://pubs.usgs.gov/of/2015/1219/images/CTB-Tables/14CTB_Spring-and-Fall_Shear Stress.zip Resource_Description: Downloadable data Custom_Order_Process: none Technical_Prerequisites: These spreadsheets included in this .zip file were created for use with Microsoft Excel 2011. They may also be viewed with the Microsoft Excel viewer or by downloading a Microsoft Compatibility Pack to view with older versions of Microsoft Excel. Metadata_Reference_Information: Metadata_Date: 20150501 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey St. Petersburg Coastal and Marine Science Center Contact_Person: Alisha M. Ellis Contact_Position: Geologist Contact_Address: Address_Type: Mailing and physical Address: 600 4th Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: U.S. Contact_Voice_Telephone: (727) 502-8056 Contact_Electronic_Mail_Address: aellis@usgs.gov Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Access_Constraints: none Metadata_Security_Information: Metadata_Security_Classification_System: None Metadata_Security_Classification: Unclassified Metadata_Security_Handling_Description: None Metadata_Use_Constraints: The U.S. Geological Survey requests that it be referenced as the originator of this dataset in any future products or research derived from these data.