Sommerfield, 2003: Upper Delaware Estuary

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: 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:

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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:

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Attribute_Definition: Internal feature number.

Attribute_Definition_Source: ESRI

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Sequential unique whole numbers that are automatically generated.

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Attribute_Definition: Feature geometry.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

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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

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