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R/V BELLOWS 95-04 surface samples

Metadata also available as - [Outline] - [Parseable text] - [DIF]

Frequently-anticipated questions:

What does this data set describe?

Title: R/V BELLOWS 95-04 surface samples
Abstract:
The U.S. Geological Survey, in cooperation with the University of South Florida and Eckerd College, completed a bathymetric, sidescan sonar, high-resolution seismic-reflection, and surface sediment sampling survey of the inner shelf environment along the western Florida coast. The survey area extends 15km from Sarasota Point to Buttonwood Harbor. This study is part of a larger program initiated by the U.S. Geological Survey to map the geologic framework and monitor the modern processes that affect the western Florida coastal zone. This portion of the project included a reconnaissance high-resolution seismic and side-scan sonar surveys of the entire study area, detailed mapping to identify patterns of hard grounds and sediment cover, and coring of sediments to document historical development of the inner shelf and coastal system.
Supplemental_Information:
Surficial sediment samples were attempted at 152 locations using an underway pipe sampler. Samples were recovered at 149 of these stations.
  1. How should this data set be cited?

    (comp.), Dave Twichell , 19990527, R/V BELLOWS 95-04 surface samples: U.S. Geological Survey Open-File Report 99-396, U.S. Geological Survey, Woods Hole, MA.

    This is part of the following larger work.

    David C. Twichell, Jr. (comp.), and (comp.), Valerie Paskevich , 1999, Bathymetry, Sidescan Sonar Image, Surface Sediments, and Surficial Geologic map of the Inner Shelf off Sarasota, Florida: Preliminary discussion and database release: U.S. Geological Survey Open-File Report 99-396, U.S. Geological Survey, Woods Hole, MA.

    Online Links:

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -82.7184
    East_Bounding_Coordinate: -82.5743
    North_Bounding_Coordinate: 27.3841
    South_Bounding_Coordinate: 27.2255

  3. What does it look like?

    <http://pubs.usgs.gov/openfile/of99-396/htmldocs/figures/fig1.jpg> (JPG)
    Grayscale map of the study area and surrounding region, 982x715 pixels, 102k bytes.
    <http://pubs.usgs.gov/openfile/of99-396/htmldocs/images/covrgs/samples.gif> (GIF)
    These data plotted over integrated sidescan and aerial photograph image, 609x684 pixels, 85.1k bytes

  4. Does the data set describe conditions during a particular time period?

    Beginning_Date: 02-May-1994
    Ending_Date: 08-May-1994
    Currentness_Reference: Publication Date

  5. What is the general form of this data set?

  6. How does the data set represent geographic features?

    1. How are geographic features stored in the data set?

      This is a Point data set. It contains the following vector data types (SDTS terminology):

      • Point (152)

    2. What coordinate system is used to represent geographic features?

  7. How does the data set describe geographic features?

    samples.dbf
    Shapefile Attribute Table

    Lon
    Longitude coordinate of sample recorded in decimal degrees.

    Range of values
    Minimum:-82.71603
    Maximum:-82.57653

    Lat
    Latitude coordinate of sample recorded in decimal degrees.

    Range of values
    Minimum:27.22710
    Maximum:27.38243

    Samplenum
    Assigned sequential number of collected sample.

    Character field

    Latitude
    This field contains the latitude coordinate of the sample recorded as a character field in the DMS format.

    Character field

    Longitude
    This field contains the longitude coordinate of the sample recorded as a character field in the DMS format.

    Character field

    Depth
    Depth of sample in meters

    Range of values
    Minimum:3.9
    Maximum:12.5
    Units:meters

    Meanphi
    Average phi of sample

    Range of values
    Minimum:-1.36
    Maximum:3.31
    Units:phi

    Stddev
    Computed standard deviation of sample

    Range of values
    Minimum:0.93
    Maximum:3.00
    Units:phi

    gravel
    Percent gravel contained in sample

    Range of values
    Minimum:0.00
    Maximum:86.51
    Units:percent of weight

    sand
    Percent sand contained in sample

    Range of values
    Minimum:0.90
    Maximum:98.77
    Units:percent of weight

    mud
    Percent mud contained in sample

    Range of values
    Minimum:0.62
    Maximum:19.99
    Units:percent of weight

    caco3
    Percent CaCO3 (calcium carbonate) contained in sample.

    Range of values
    Minimum:0.52
    Maximum:97.17
    Units:percent of weight

    toc
    Percent total carbon contained in sample.

    Range of values
    Minimum:0.00
    Maximum:3.41
    Units:percent of weight

    Phi01
    Phi class -1.5 (proportion of sample composed of grains larger than -1.5 phi)

    Range of values
    Minimum:0.00
    Maximum:86.51
    Units:percent of weight

    Phi02
    Phi class -1.0 (proportion of sample composed of grains larger than -1.0 and smaller than -1.5 phi)

    Range of values
    Minimum:0.00
    Maximum:17.81
    Units:percent of weight

    Phi03
    Phi class -.5 (proportion of sample composed of grains larger than -0.5 and smaller than -1.0 phi)

    Range of values
    Minimum:0.00
    Maximum:17.81
    Units:percent of weight

    Phi04
    Phi class 0 (proportion of sample composed of grains larger than 0 and smaller than -0.5 phi)

    Range of values
    Minimum:0.00
    Maximum:44.72
    Units:percent of weight

    Phi05
    Phi class .5 (proportion of sample composed of grains larger than 0.5 and smaller than 0 phi)

    Range of values
    Minimum:0.00
    Maximum:46.19
    Units:percent of weight

    Phi06
    Phi class 1.0 (proportion of sample composed of grains larger than 1.0 and smaller than 0.5 phi)

    Range of values
    Minimum:0.00
    Maximum:60.33
    Units:percent of weight

    Phi07
    Phi class 1.5 (proportion of sample composed of grains larger than 1.5 and smaller than 1.0 phi)

    Range of values
    Minimum:0.00
    Maximum:39.14
    Units:percent of weight

    Phi08
    Phi class 2.0 (proportion of sample composed of grains larger than 2.0 and smaller than 1.5 phi)

    Range of values
    Minimum:0.00
    Maximum:36.89
    Units:percent of weight

    Phi09
    Phi class 2.5 (proportion of sample composed of grains larger than 2.5 and smaller than 2.0 phi)

    Range of values
    Minimum:0.00
    Maximum:54.24
    Units:percent of weight

    Phi10
    Phi class 3.0 (proportion of sample composed of grains larger than 3.0 and smaller than 2.5 phi)

    Range of values
    Minimum:0.00
    Maximum:78.04
    Units:percent of weight

    Phi11
    Phi class 3.5 (proportion of sample composed of grains larger than 3.5 and smaller than 3.0 phi)

    Range of values
    Minimum:0.00
    Maximum:38.55
    Units:percent of weight

    Phi12
    Phi class 4.0 (proportion of sample composed of grains larger than 4 and smaller than 3.5 phi)

    Range of values
    Minimum:0.00
    Maximum:17.25
    Units:percent of weight

    Phi13
    Phi class 8.0 (proportion of sample composed of grains larger than 8 and smaller than 4 phi)

    Range of values
    Minimum:0.00
    Maximum:11.78
    Units:percent of weight

    Phi14
    Phi class 12.0 (proportion of sample composed of grains larger than 12 and smaller than 8 phi)

    Range of values
    Minimum:0.33
    Maximum:4.90
    Units:percent of weight

    Classification
    General classification of surface where sample was obtained. Not all samples have an assigned classification. Descriptive text.

    Character field

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)

  2. Who also contributed to the data set?

  3. To whom should users address questions about the data?

    U. S. Geological Survey
    c/o Dave Twichell
    Oceanographer
    384 Woods Hole Road
    Woods Hole, MA 02532
    USA

    (508) 548-8700 x2266 (voice)
    (508) 457-2310 (FAX)
    dtwichell@usgs.gov

Why was the data set created?

This GIS overlay is a component of the Sarasota, Florida ArcView GIS database and contains the analyses of 149 surface samples. Sediment samples were collected during May 2-8, 1995 aboard the R/V BELLOWS (operated by the University of South Florida).

How was the data set created?

  1. From what previous works were the data drawn?

  2. How were the data generated, processed, and modified?

  3. What similar or related data should the user be aware of?

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

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:
The U.S. Geological Survey must be referenced as the originator of the dataset in any future products or research derived from these data.

  1. Who distributes the data set? (Distributor 1 of 2)

    U. S. Geological Survey
    c/o Dave Twichell
    Oceanographer
    384 Woods Hole Road
    Woods Hole, MA 02543
    USA

    (508) 548-8700 x2266 (voice)
    (508) 457-2310 (FAX)
    dtwichell@usgs.gov

  2. What's the catalog number I need to order this data set?

    USGS Open-File Report 99-396 data for R/V BELLOWS 95-04 samples

  3. What legal disclaimers am I supposed to read?

    Although this derived data set has been used by the 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.

  4. How can I download or order the data?

  5. What hardware or software do I need in order to use the data set?

    Samples are available in ArcView shapefile format. The user must have ArcView to read and process the data file or another GIS application package capable of importing the data. Samples are also available in a ASCII format that the user may reformat for their needs.

  1. Who distributes the data set? (Distributor 2 of 2)

    USGS Information Services
    Box 25286 Denver Federal Center
    Denver, CO 80225
    USA

    1-888-ASK-USGS (voice)
    303-202-4693 (FAX)
    ask@usgs.gov

  2. What's the catalog number I need to order this data set?

    USGS Open-File Report 99-396 data for bathy2

  3. What legal disclaimers am I supposed to read?

  4. How can I download or order the data?

Who wrote the metadata?

Dates:
Last modified: 15-Jun-1999
Metadata author:
U. S. Geological Survey
c/o Valerie Paskevich
Computer Specialist
384 Woods Hole Rd.
Woods Hole, MA 02543
USA

(508) 548-8700 x2281 (voice)
(508) 457-2310 (FAX)
vpaskevich@usgs.gov

Metadata standard:
Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)

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Page Last Modified: Monday, 10-Nov-2008 12:20:10 EST

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