Identification_Information: Citation: Citation_Information: Originator: Christopher K. Sommerfield Publication_Date: 2003 Title: Sommerfield, 2003: Upper Delaware Estuary Geospatial_Data_Presentation_Form: tabular digital data Online_Linkage: Description: Abstract: "In cooperation with the Delaware River Basin Commission (DRBC), Delaware Department of Natural Resources and Environmental Control (DNREC), and Environmental Protection Agency Region III (EPA), a sedimentological and geophysical study of the upper Delaware Estuary was conducted during 2001-2002 by researchers from the College of Marine Studies and the Department of Geology, University of Delaware. The overarching objective of this project was to assist DRBC in identifying sediment depositional zones within the upper estuary, and to quantify rates of accumulation, ultimately to help constrain the loading history of toxic compounds from point and non-point sources (DRBC, 1998). The specific goals were to: (1) generate a comprehensive map of sedimentary environments with respect to bottom morphology and sediment type, and (2) develop sediment chronologies for select muddy depositional sites revealed through sonar observations or otherwise specified by DRBC. To accomplish these goals, extensive sidescan and chirp sonar surveys and sediment sampling of the estuarine floor and shallow subbottom were conducted aboard the RV Cape Henlopen (University of Delaware) and the RV Lear (EPA) between April and December of 2001. Sidescan and chirp sonars were used to obtain acoustic remote sensing data on bottom sedimentary environments and identify regions of fine-grained sediment deposition, i.e., possible pollutant depocenters. Downcore distributions of the radioisotopes Cs-137 and Pb-210 were measured at these sites to estimate recent sedimentation rates. Initial radioisotope measurements at several sites within the subtidal estuary revealed that the most recent sedimentary record is incomplete and therefore unable to yield unambiguous sediment chronologies. As a substitute, selected tidal marsh and river-floodplain sites in Delaware and New Jersey assumed (and later confirmed) to be amenable to radioisotope geochronology were visited between March and July 2002 for push-core sampling. Interim results of this study were presented at the 2002 Geological Society of America meeting (Sommerfield and Madsen, 2002), as well as at the 2002 TMDL Symposium in Philadelphia. A timeline of the field and laboratory components of this study is provided in Table 1." Purpose: "The overarching objective of this project was to assist DRBC in identifying sediment depositional zones within the upper estuary, and to quantify rates of accumulation, ultimately to help constrain the loading history of toxic compounds from point and non-point sources (DRBC, 1998)." Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 2001 Ending_Date: 2002 Currentness_Reference: ground condition Status: Progress: In work Maintenance_and_Update_Frequency: As needed Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -75.582070 East_Bounding_Coordinate: -74.935270 North_Bounding_Coordinate: 40.034220 South_Bounding_Coordinate: 39.222480 Keywords: Theme: Theme_Keyword_Thesaurus: General Theme_Keyword: analyses Theme_Keyword: geoacoustics Theme_Keyword: grab samples Theme_Keyword: grain size Theme_Keyword: lithology Theme_Keyword: seabed Theme_Keyword: seafloor Theme_Keyword: sediment data Theme_Keyword: texture Theme_Keyword: University of Delaware Theme_Keyword: GEOCLUTTER Place: Place_Keyword_Thesaurus: General Place_Keyword: Atlantic coast Place_Keyword: Delaware Place_Keyword: East Coast Place_Keyword: United States Place_Keyword: Upper Delaware Place_Keyword: Upper Delaware estuary Access_Constraints: None. Use_Constraints: None. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Dr. Christopher K. Sommerfield Contact_Organization: University of Delaware, Graduate College of Marine Studies Contact_Position: Assistant Professor of Oceanography Contact_Address: Address: 700 Pilottown Road City: Lewes State_or_Province: Delaware Postal_Code: 19958 Country: USA Contact_Voice_Telephone: (302) 645-4255 Contact_Facsimile_Telephone: (302) 645-4007 Contact_Electronic_Mail_Address: cs@udel.edu Browse_Graphic: Browse_Graphic_File_Name: sommerfield2.jpg Browse_Graphic_File_Description: Image map showing extent and distribution of data layer coverage Browse_Graphic_File_Type: JPEG Data_Set_Credit: Please review cross reference information for original data set credit to Sommerfield, 2003. Native_Data_Set_Environment: Microsoft Windows 2000 Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 8.3.0.800 Cross_Reference: Citation_Information: Originator: Christopher K. Sommerfield Originator: John A. Madsen Publication_Date: 2003 Title: Sedimentological and Geophysical Survey of the Upper Delaware Estuary Geospatial_Data_Presentation_Form: document Other_Citation_Details: Final Report to Delaware River Basin Commission 25 State Police Drive PO Box 7360 West Trenton, New Jersey 08628-0360 Online_Linkage: http://www.ocean.udel.edu/cms/csommerfield/Delaware%20Estuary%20Final%20Report.pdf Online_Linkage: http://www.state.nj.us/drbc/UDelsurvey/ Cross_Reference: Citation_Information: Originator: John A. Madsen Originator: Christopher K. Sommerfield Publication_Date: 2003 Title: Application of side -scan sonar, sub-bottom profiling, and echo-sounding techniques to study sediment deposition and erosion in estuaries: Results from the lower Delaware River and upper Delaware Bay Geospatial_Data_Presentation_Form: document Series_Information: Series_Name: U.S. Hydro 2003 Conference Issue_Identification: Session 2.3 Publication_Information: Publisher: The Hydrographic Society of America (THSOA) Online_Linkage: http://www.thsoa.org/hy03/2_3.pdf Data_Quality_Information: Lineage: Process_Step: Process_Description: Digital data were checked, formatted to dbSEABED input format, then processed using dbSEABED software to produce a range of output formats. The processing contained quality checking that may have declined to pass faulty or suspect data to outputs. Source_Used_Citation_Abbreviation: CH01-28 grainsize.xls: Sheet=CH01-28 Source_Used_Citation_Abbreviation: CH01-28 grainsize.xls Sheet= CH01-28 Source_Used_Citation_Abbreviation: sommerfieldJan04.xls Sheet=sample locns Source_Used_Citation_Abbreviation: sommerfieldJan04.xls Sheet=porosity Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Chris Jenkins Contact_Organization: Institute of Arctic & Alpine Research (INSTAAR) University of Colorado at Boulder Contact_Address: Address_Type: mailing and physical address Address: 1560 30th Street Address: Campus Box 450 City: Boulder State_or_Province: CO Postal_Code: 80309-0450 Country: USA Contact_Voice_Telephone: (303) 492-6387 Contact_Facsimile_Telephone: (303) 492-6388 Contact_Electronic_Mail_Address: chris.jenkins@colorado.edu Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Vector Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Entity point Point_and_Vector_Object_Count: 489 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 1927 Ellipsoid_Name: Clarke 1866 Semi-major_Axis: 6378206.400000 Denominator_of_Flattening_Ratio: 294.978698 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: sommerfield2 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: LATITUDE Attribute: Attribute_Label: LONGITUDE Attribute: Attribute_Label: SITENAME Overview_Description: Entity_and_Attribute_Overview: The following fields were entered into usSEABED: TXR data: % Gravel:% Sand:% Silt:% Clay:% Mud LTH data: FolkClasses Distribution_Information: Resource_Description: Downloadable Data Distribution_Liability: Although this data set has been used by the U.S. Geological Survey (USGS), no warranty, expressed or implied, is made by the USGS as to the accuracy of the data and/or related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of these data or related materials. Trade, firm, or product names and other references to non-USGS products and services are provided for information only and do not constitute endorsement or warranty, express or implied, by the USGS, USDOI, or U.S. Government, as to their suitability, content, usefulness, functioning, completeness, or accuracy. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Transfer_Size: 0.071 Metadata_Reference_Information: Metadata_Date: 20050525 Metadata_Review_Date: 20050503 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Jamey Reid Contact_Organization: U.S. Geological Survey Contact_Position: IT Specialist (Data Management) 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 x2204 Contact_Facsimile_Telephone: (508) 457-2310 Contact_Electronic_Mail_Address: jreid@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_Access_Constraints: None Metadata_Use_Constraints: None Metadata_Extensions: Online_Linkage: http://www.esri.com/metadata/esriprof80.html Profile_Name: ESRI Metadata Profile