2005030714144400FALSE20050525132900002005052513290900{3BF230B9-ADEB-4AB4-8270-C80FA3BC6557}DefineProjection \\Jreid\ec_usseabed\metadata\NAV\sommerfield2.shp GEOGCS['GCS_North_American_1927',DATUM['D_North_American_1927',SPHEROID['Clarke_1866',6378206.4,294.9786982]],PRIMEM['Greenwich',0.0],UNIT['Degree',0.0174532925199433]] \\Jreid\ec_usseabed\metadata\NAV\sommerfield2.shpMicrosoft Windows 2000 Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 8.3.0.800en"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.""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)."Christopher K. Sommerfield2003Sommerfield, 2003: Upper Delaware Estuarysommerfield2tabular digital dataground condition20012002As needed-75.582070-74.93527040.03422039.222480-75.582070-74.93527039.22248040.034220Generalanalysesgeoacousticsgrab samplesgrain sizelithologyseabedseafloorsediment datatextureUniversity of DelawareGEOCLUTTERGeneralAtlantic coastDelawareEast CoastUnited StatesUpper DelawareUpper Delaware estuaryNone.None.ShapefileChristopher K. SommerfieldJohn A. MadsenSedimentological and Geophysical Survey of the Upper Delaware EstuaryFinal Report to Delaware River Basin Commission 25 State Police Drive PO Box 7360 West Trenton, New Jersey 08628-0360http://www.ocean.udel.edu/cms/csommerfield/Delaware%20Estuary%20Final%20Report.pdf2003http://www.state.nj.us/drbc/UDelsurvey/documentsommerfield2.jpgImage map showing extent and distribution of data layer coverageJPEGJohn A. MadsenChristopher K. Sommerfield2003Application 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 BayU.S. Hydro 2003 ConferenceSession 2.3The Hydrographic Society of America (THSOA)http://www.thsoa.org/hy03/2_3.pdfdocumentDr. Christopher K. SommerfieldUniversity of Delaware, Graduate College of Marine StudiesAssistant Professor of Oceanography
700 Pilottown Road
LewesDelaware19958USA(302) 645-4255(302) 645-4007cs@udel.eduPlease review cross reference information for original data set credit to Sommerfield, 2003.Microsoft Windows 2000 Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 8.3.0.800sommerfield2-75.58207-74.9352740.0342239.222481-75.58207-74.9352740.0342239.222481enFGDC Content Standards for Digital Geospatial MetadataFGDC-STD-001-1998local timeJamey ReidU.S. Geological SurveyIT Specialist (Data Management)mailing and physical address
384 Woods Hole Rd.
Woods HoleMA02543-1598(508) 548-8700 x2204(508) 457-2310jreid@usgs.gov20050525NoneNone20050503http://www.esri.com/metadata/esriprof80.htmlESRI Metadata ProfileISO 19115 Geographic Information - MetadataDIS_ESRI1.0datasetDownloadable Data0.0710.071Although 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.002file://\\JREID\EC_usSEABED\metadata\NAV\sommerfield2.shpLocal Area Network0.071ShapefileVectorSimplePointFALSE489FALSEFALSEEntity point489GCS_North_American_1927Decimal degrees0.0000000.000000North American Datum of 1927Clarke 18666378206.400000294.978698GCS_North_American_1927489sommerfield2Feature Class489FIDFIDOID400Internal feature number.ESRISequential unique whole numbers that are automatically generated.ShapeShapeGeometry000Feature geometry.ESRICoordinates defining the features.LATITUDELATITUDENumber145LONGITUDELONGITUDENumber145SITENAMESITENAMEString40The following fields were entered into usSEABED: TXR data: % Gravel:% Sand:% Silt:% Clay:% Mud LTH data: FolkClasses20050525Digital 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.20050307CH01-28 grainsize.xls: Sheet=CH01-28CH01-28 grainsize.xls Sheet= CH01-28sommerfieldJan04.xls Sheet=sample locnssommerfieldJan04.xls Sheet=porosityChris JenkinsInstitute of Arctic & Alpine Research (INSTAAR) University of Colorado at Bouldermailing and physical address
1560 30th Street
Campus Box 450
BoulderCO80309-0450USA(303) 492-6387(303) 492-6388chris.jenkins@colorado.edu