JPEG images of photographs of vibracores collected by the U.S. Geological Survey within Apalachicola Bay, Florida, 2007

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Frequently-anticipated questions:

What does this data set describe?

Title:
JPEG images of photographs of vibracores collected by the U.S. Geological Survey within Apalachicola Bay, Florida, 2007
Abstract:
In 2007, the U.S. Geological Survey collected 24 vibracores within Apalachicola Bay, Florida. The vibracores were collected using a Rossfelder electric percussive (P-3) vibracore system during a cruise on the R/V Gilbert. Selection of the core sites was based on a geophysical survey that was conducted during 2005 and 2006 in collaboration with the National Oceanic and Atmospheric Administration’s (NOAA) Coastal Services Center (CSC) and the Apalachicola Bay National Estuarine Research Reserve. Available data include the vibracore data logs and photographs, select seismic-reflection profiles (from the geophysical survey), and core-derived data including: grain size analyses, radiocarbon ages, microfossil counts, and sedimentological interpretations. The long-term goal of this study is to provide maps, data, and assistance to the Apalachicola Bay National Estuarine Research Reserve in their effort to monitor and understand the geology and ecology of Apalachicola Bay Estuary. These data will inform coastal managers charged with resource preservation.
  1. How should this data set be cited?

    U.S. Geological Survey, 2009, JPEG images of photographs of vibracores collected by the U.S. Geological Survey within Apalachicola Bay, Florida, 2007: Open-File Report 2009-1031, U.S. Geological Survey, Coastal and Marine Geology Program, Woods Hole Science Center, Woods Hole, MA.

    Online Links:

    This is part of the following larger work.

    Twichell, D., Pendleton, E., Poore, R., Osterman, L., and Kelso, K., 2009, Vibracore, Radiocarbon, Microfossil, and Grain-Size Data from Apalachicola Bay, Florida: Open-File Report 2009-1031, U.S. Geological Survey, Coastal and Marine Geology Program, Woods Hole Science Center, Woods Hole, MA.

    Online Links:

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -85.074083
    East_Bounding_Coordinate: -84.831367
    North_Bounding_Coordinate: 29.727917
    South_Bounding_Coordinate: 29.605850

  3. What does it look like?

    <https://pubs.usgs.gov/of/2009/1031/images/core_photo.jpg> (JPEG)
    Photographs for vibracores within Apalachicola Bay, Florida

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

    Beginning_Date: 22-May-2007
    Ending_Date: 26-May-2007
    Currentness_Reference: ground condition

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

    Geospatial_Data_Presentation_Form: raster digital data

  6. How does the data set represent geographic features?

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

      This is a Raster data set. It contains the following raster data types:

      • Dimensions, type Pixel

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

  7. How does the data set describe geographic features?

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?

    David C. Twichell
    U.S. Geological Survey
    Oceanographer
    384 Woods Hole Rd.
    Woods Hole, MA 02543-1598

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

Why was the data set created?

These data are JPEG images of each vibracore photograph for 24 vibracores collected by the U.S. Geological Survey during a 2007 cruise within Apalachicola Bay, Florida. These photographs were generated in order to create an electronic record of the core content. These photographs are hyperlinked to the core location file 'App07_CoreLocation.shp' in this report.

How was the data set created?

  1. From what previous works were the data drawn?

    USGS (source 1 of 1)
    U.S. Geological Survey, Unpublished Material, vibracores collected by the U.S. Geological Survey within Apalachicola Bay, FL.

    Type_of_Source_Media: paper
    Source_Contribution:
    Twenty-four vibracores were collected within Apalachicola Bay, Florida during May 2007. Vibracore sites were selected based on the identification of target areas. These target areas were chosen from the analysis of geophysical data collected during 2005 and 2006 in collaboration with the National Oceanic and Atmospheric Administration’s (NOAA) Coastal Services Center (CSC) and the Apalachicola Bay National Estuarine Research Reserve. The vibracores were collected using a Rossfelder electric percussive (P-3) vibracore system. The cores were collected in a 7.62 cm (3 in) diameter by 6.10 m (20 ft) long aluminum tube with a copper core catcher riveted to the bottom. The vibracoring rig was mounted, deployed, and recovered on the port side of the R/V Gilbert. The ship was anchored from the bow and stern to maintain ship position as a hydraulic crane deployed and recovered the coring rig. Following recovery, the bottom of the core was capped with a plastic cap, water was drained from the top of the core barrel by drilling a hole in the aluminum tube immediately above the sediment/water interface, and the pipe was cut at the sediment/water interface. Each core was cut into one-meter sections (measuring down from the sediment/water interface) on the boat deck, the ends were capped, each section labeled, and stored on deck for transport. Core sections for all 24 vibracores were transported to the U.S. Geological Survey Florida Integrated Science Center (FISC) where the 1-meter core sections were split in half (lengthwise) in the FISC core laboratory. One half of each core section was preserved and archived in a clear plastic sleeve with the ends taped shut to minimize moisture loss. The other half, the working half, of the core was used for visual descriptions, photographs, and eventually sub-sampling.

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

    Date: 2007 (process 1 of 2)
    Core photographs were collected at the U.S. Geological Survey FlSC office core laboratory using a digital camera. The cores were photographed by aligning all sections of a vibracore abreast with depth indicators located between sections and a label identifying the core id.

    Person who carried out this activity:

    David C. Twichell
    U.S. Geological Survey
    Oceanographer
    384 Woods Hole Rd.
    Woods Hole, MA 02543-1598

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

    Date: 2007 (process 2 of 2)
    The core photographs were downloaded to a PC from the digital camera and saved as JPEGs with names indicating the core ID. Filenames have the following structure: year_location_core site; such that 07_APP_01.jpg is from 2007, Apalachicola, site 1.

    Person who carried out this activity:

    David C. Twichell
    U.S. Geological Survey
    Oceanographer
    384 Woods Hole Rd.
    Woods Hole, MA 02543-1598

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

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

    Twichell, D., Andrews, B., Edmiston, H., and Stevenson, W., 2007, Geophysical Mapping of Oyster Habitats in a Shallow Estuary; Apalachicola Bay, Florida: U.S. Geological Survey Open-File Report 2006-1381, U.S. Geological Survey, Woods Hole Science Center, Woods Hole, MA.

    Online Links:

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

  1. How well have the observations been checked?

    There are no attributes associated with these JPG images

  2. How accurate are the geographic locations?

    The Differential Global Positioning System latitude and longitude for each core is recorded in the 'App07-CoreLocation' file included in this report, and these positions are assumed to be accurate within +/- 20 m.

  3. How accurate are the heights or depths?

  4. Where are the gaps in the data? What is missing?

    All vibracores were collected from the R/V Gilbert using a Rossfelder vibracore. One vibracore was collected at each of the 23 predetermined locations, with the exception of site 18. Two cores were collected here because the first core (App07-18A) was recovered without a core catcher on the end, and several centimeters of the sample were lost. A second core was taken (App07-18B) at site 18, and both cores were processed and preserved. All 24 vibracores were photographed and the photos were saved as JPEG images.

  5. How consistent are the relationships among the observations, including topology?

    Core photographs were saved to JPEG format in order to maintain a digital record of the data. All core photographs were taken in the same sediment lab and by the same photographer.

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 Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey as the originator of the dataset.

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

    David C. Twichell
    U.S. Geological Survey
    Oceanographer
    384 Woods Hole Rd.
    Woods Hole, MA 02543-1598

    (508) 548-8700x2266 (voice)
    (508) 457-2310 (FAX)
    dtwichell@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?

    Neither the U.S. Government, the Department of the Interior, nor the USGS, nor any of their employees, contractors, or subcontractors, make any warranty, express or implied, nor assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, nor represent that its use would not infringe on privately owned rights. 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?

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

    This zip file contains 24 photographs available in JPEG Format (.jpg). These data can be viewed with any image JPEG viewing software.

Who wrote the metadata?

Dates:
Last modified: 14-Jul-2009
Metadata author:
Elizabeth A. Pendleton
U.S. Geological Survey
Geologist
384 Woods Hole Road
Woods Hole, MA 02543-1598
USA

508-548-8700 x2259 (voice)
(508)-457-2310 (FAX)
ependleton@usgs.gov

Metadata standard:
FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)
Metadata extensions used:

Generated by mp version 2.9.6 on Wed Jul 15 14:59:28 2009