Sediment Data from the Kennebec/Androscoggin River System (LARSEN02 shapefile)

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Frequently anticipated questions:

What does this data set describe?

Title:
Sediment Data from the Kennebec/Androscoggin River System (LARSEN02 shapefile)
Abstract:
The data in this layer are from an unpublished report produced by the Bigelow Laboratory. The source project was conducted primarily to examine contaminant distributions, but also produced sediment textural data. The data presented in this layer were not part of the Gulf of Maine Contaminated Sediments Database.
  1. How might this data set be cited?
    Poppe, Lawrence J., 2003, Sediment Data from the Kennebec/Androscoggin River System (LARSEN02 shapefile): Open-File Report 03-001, U. S. Geological Survey, Coastal and Marine Geology Program, Woods Hole Coastal and Marine Science Center, Woods Hole, MA.

    Online Links:

    This is part of the following larger work.

    Poppe, L.J., Paskevich, V.F., Williams, S.J., Hastings, M.E., Kelley, J.T., Belknap, D.F., Ward, L.G., Fitzgerald, D.M., and Larsen, P.F., 2003, Surficial Sediment Data from the Gulf of Maine, Georges Bank, and vicinity: a GIS Compilation: Open-File Report 03-001, U. S. Geological Survey, Reston, VA.

    Online Links:

    Other_Citation_Details: 1 CD-ROM
  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -69.931040
    East_Bounding_Coordinate: -69.725760
    North_Bounding_Coordinate: 44.271630
    South_Bounding_Coordinate: 43.790260
  3. What does it look like?
    http://pubs.usgs.gov/of/2003/of03-001/data/seddata/larsen02/larsen02-thumb.gif (GIF)
    Thumbnail image showing extent and distribution of data layer coverage.
    http://pubs.usgs.gov/of/2003/of03-001/data/seddata/larsen02/larsen02.gif (GIF)
    Image map showing extent and distribution of data layer coverage.
  4. Does the data set describe conditions during a particular time period?
    Calendar_Date: 2002
    Currentness_Reference:
    publication date
  5. What is the general form of this data set?
    Geospatial_Data_Presentation_Form: vector digital data
  6. How does the data set represent geographic features?
    1. How are geographic features stored in the data set?
      This is a Vector data set. It contains the following vector data types (SDTS terminology):
      • Entity point (47)
    2. What coordinate system is used to represent geographic features?
      Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest 0.00001. Longitudes are given to the nearest 0.00001. Latitude and longitude values are specified in Decimal degrees. The horizontal datum used is North American Datum of 1927.
      The ellipsoid used is Clarke 1866.
      The semi-major axis of the ellipsoid used is 6378206.400000.
      The flattening of the ellipsoid used is 1/294.978698.
  7. How does the data set describe geographic features?
    larsen02.dbf
    Shapefile Attribute Table (Source: ESRI)
    FID
    Internal feature number. (Source: ESRI) Sequential unique whole numbers that are automatically generated.
    Shape
    Feature geometry. (Source: ESRI) Coordinates defining the features.
    PROJECTID
    Source reference (Source: Compiler)
    ValueDefinition
    LARSEN AND GAUDETTE 2002Information unavailable from original metadata.
    AREA
    Geographic designation from where samples were collected (Source: Scientist)
    ValueDefinition
    Information unavailable from original metadata.Names of rivers
    STATION
    Name of sampling site (Source: Scientist)
    ValueDefinition
    Information unavailable from original metadata.Characters and numerics designating stations
    LATITUDE
    Latitude coordinate of sample location (Source: Scientist)
    Range of values
    Minimum:43.79026
    Maximum:44.27163
    Units:decimal degrees
    Resolution:0.00001
    LONGITUDE
    Longitude coordinate of sample location (Source: Scientist)
    Range of values
    Minimum:-69.93104
    Maximum:-69.72576
    Units:decimal degrees
    Resolution:0.00001
    SAND
    Percent of sand in sample (Source: Scientist)
    Range of values
    Minimum:20.1
    Maximum:91.1
    Units:percent
    Resolution:0.01
    SILT
    Percentage of silt in sample (Source: Scientist)
    Range of values
    Minimum:6.8
    Maximum:65.1
    Units:percent
    Resolution:0.01
    CLAY
    Percentage of clay in sample (Source: Scientist)
    Range of values
    Minimum:2.1
    Maximum:17.3
    Units:percent
    Resolution:0.01
    FINES
    Percentage of fines (silt+clay) in sample (Source: Scientist)
    Range of values
    Minimum:8.9
    Maximum:79.9
    Units:percent
    Resolution:0.01
    SED_CLASS
    Sediment cassification according to a scheme devised by Shepard (1954) (Source: Compiler) Verbal descriptions of the sediment

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
    • Lawrence J. Poppe
  2. Who also contributed to the data set?
    Please review the cross reference information for the original data set credits, and Larry Poppe for creating this ArcView shapefile.
  3. To whom should users address questions about the data?
    Lawrence J. Poppe
    U.S. Geological Survey
    Geologist
    384 Woods Hole Road
    Woods Hole, MA
    USA

    (508) 548-8700 x2314 (voice)
    (508) 457-2310 (FAX)
    lpoppe@usgs.gov

Why was the data set created?

The purpose of this data layer is to make available a subset of a data set produced by P. Larsen and H. Gaudette of the Bigelow Laboratory of Boothbay Harbor, Maine. This subset contains information for those samples with sediment grain-size data, and which are located in the Kennebec/Androscoggin River system of Maine.

How was the data set created?

  1. From what previous works were the data drawn?
    Information unavailable from original metadata. (source 1 of 1)
    Larsen, P.F., and Gaudette, H.E., 2002, Spatial and temporal aspects of sedimentary contaminant concentrations in the tidal portions of the Kennebec/Androscoggin River systems: Report Report to the Surface Water Ambient Toxics Monitoring Program, MaineDepartment of Environmental Protection, Bigelow Laboratory for Ocean Sciences, West Boothbay Harbor.

    Type_of_Source_Media: Excel file
    Source_Contribution: Information unavailable from original metadata.
  2. How were the data generated, processed, and modified?
    Date: 19-Dec-2002 (process 1 of 5)
    Textural data from the Kennebec/Androscoggin River system of Maine were reorganized in Excel and exported to an ASCII file. Stations and sediment data were imported from the ASCII text file to an ArcView table. The table was later converted to an event theme and saved as the final shapefile. Person who carried out this activity:
    Lawrence J. Poppe
    U.S. Geological Survey
    Geologist
    384 Woods Hole Road
    Woods Hole, MA
    USA

    (508) 548-8700 x2314 (voice)
    (508) 457-2310 (FAX)
    lpoppe@usgs.gov
    Data sources used in this process:
    • larsen02.txt
    Data sources produced in this process:
    • larsen02.dbf
    • larsen02.shp
    • larsen02.shx
    • larsen02.sbn
    • larsen02.sbx
    Date: 02-Dec-2015 (process 2 of 5)
    Edits to the metadata were made to fix any errors that MP v 2.9.32 flagged. This is necessary to enable the metadata to be successfully harvested for various data catalogs. In some cases, this meant adding text "Information unavailable" or "Information unavailable from original metadata" for those required fields that were left blank. Other minor edits were probably performed (title, publisher, publication place, etc.). The metadata date (but not the metadata creator) was edited to reflect the date of these changes. The metadata available from a harvester may supersede metadata bundled within a download file. Compare the metadata dates to determine which metadata file is most recent. Person who carried out this activity:
    U.S. Geological Survey
    Attn: VeeAnn A. Cross
    Marine Geologist
    384 Woods Hole Rd.
    Woods Hole, MA

    508-548-8700 x2251 (voice)
    508-457-2310 (FAX)
    vatnipp@usgs.gov
    Date: 20-Jul-2018 (process 3 of 5)
    USGS Thesaurus keywords added to the keyword section. Person who carried out this activity:
    U.S. Geological Survey
    Attn: VeeAnn A. Cross
    Marine Geologist
    384 Woods Hole Road
    Woods Hole, MA

    508-548-8700 x2251 (voice)
    508-457-2310 (FAX)
    vatnipp@usgs.gov
    Date: 18-Nov-2019 (process 4 of 5)
    Crossref DOI link was added as the first link in the metadata. Person who carried out this activity:
    U.S. Geological Survey
    Attn: VeeAnn A. Cross
    Marine Geologist
    384 Woods Hole Road
    Woods Hole, MA

    508-548-8700 x2251 (voice)
    508-457-2310 (FAX)
    vatnipp@usgs.gov
    Date: 08-Sep-2020 (process 5 of 5)
    Added keywords section with USGS persistent identifier as theme keyword. Person who carried out this activity:
    U.S. Geological Survey
    Attn: VeeAnn A. Cross
    Marine Geologist
    384 Woods Hole Road
    Woods Hole, MA

    508-548-8700 x2251 (voice)
    508-457-2310 (FAX)
    vatnipp@usgs.gov
  3. What similar or related data should the user be aware of?
    Larsen, P.F., and Gaudette, H.E., 2002, Spatial and temporal aspects of sedimentary contaminant concentrations in the tidal portions of the Kennebec/Androscoggin River systems: Report Report to the Surface Water Ambient Toxics Monitoring Program, Maine Department of Environmental Protection, Bgelow Laboratory for Ocean Sciences, West Boothbay Harbor, ME.

How reliable are the data; what problems remain in the data set?

  1. How well have the observations been checked?
    All attributes were checked by the compilers in a consistent manner.
  2. How accurate are the geographic locations?
    Navigation was by GPS (+/- ~10 m)
  3. How accurate are the heights or depths?
  4. Where are the gaps in the data? What is missing?
    Identifiers, navigation, grain-size data, and textural classification are provided for 47 stations.
  5. How consistent are the relationships among the observations, including topology?
    No additional checks for topological consistency were performed on the data

How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?
Access_Constraints: None
Use_Constraints:
Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey (USGS) as the source of this information.
  1. Who distributes the data set? (Distributor 1 of 1)
    Larence J. Poppe
    U.S. Geological Survey
    Geologist
    384 Woods Hole Road
    Woods Hole, MA
    USA

    (508) 548-8700 x2314 (voice)
    (508) 457-2310 (FAX)
    lpoppe@usgs.gov
  2. What's the catalog number I need to order this data set? Downloadable Data
  3. What legal disclaimers am I supposed to read?
    Although these data have been used by the U.S. Geological Survey (USGS), U.S. Department of the Interior (DOI), no warranty expressed or implied is made by the U.S. Geological Survey as to the accuracy of the data. 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. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
  4. How can I download or order the data?
    • Availability in digital form:
      Data format: Five files (larsen02.shp, laresn02.dbf, larsen02.shx, larsen02.sbx, larsen02.sbn) comprising the ArcView point shapefile components, 'prj' and 'avl' files, metadata text file and browse graphic. in format SHP (version 3.2) ESRI point shapefile Size: 0.001
      Network links: http://pubs.usgs.gov/of/2003/of03-001/data/seddata/larsen02/larsen02.zip
      Media you can order: CD-ROM (Density 650 Mbytes) (format ISO 9660)
      Note: The user must have a computer system with a CD-ROM available. To browse the information contained on this CD-ROM, the user must have a current WWW browser available. The user must also have software installed on their computer to unzip the archived file.
    • Cost to order the data: None

  5. What hardware or software do I need in order to use the data set?
    These data are available in Environmental Systems Research Institute (ESRI) shapefile format. The user must have ArcGIS or ArcView 3.0 or greater software to read and process the data file. In lieu of ArcView or ArcGIS, the user may utilize another GIS application package capable of importing the data. A free data viewer, ArcExplorer, capable of displaying the data is available from ESRI at www.esri.com.

Who wrote the metadata?

Dates:
Last modified: 16-Nov-2021
Metadata author:
Lawrence J. Poppe
U.S. Geological Survey
Geologist
384 Woods Hole Road
Woods Hole, MA
USA

(508) 548-8700 x2314 (voice)
(508) 457-2310 (FAX)
whsc_data_contact@usgs.gov
Contact_Instructions:
The metadata contact email address is a generic address in the event the metadata contact is no longer with the USGS or the email is otherwise invalid.
Metadata standard:
FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)
This page is <https://cmgds.marine.usgs.gov/catalog/whcmsc/open_file_report/ofr2003-001/larsen02.shp.faq.html>
Generated by mp version 2.9.50 on Tue Nov 16 10:06:29 2021