Acquisition log maintained in 2012 by the U.S. Geological Survey in the Connecticut River during field activity 2012-024-FA (PDF of scanned spreadsheet)

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Frequently anticipated questions:

What does this data set describe?

Title:
Acquisition log maintained in 2012 by the U.S. Geological Survey in the Connecticut River during field activity 2012-024-FA (PDF of scanned spreadsheet)
Abstract:
A geophysical and geological survey was conducted at the mouth of the Connecticut River from Old Saybrook to Essex, Connecticut, in September 2012. Approximately 230 linear kilometers of digital Chirp subbottom (seismic-reflection) and 234-kilohertz interferometric sonar (bathymetric and backscatter) data were collected along with sediment samples, riverbed photographs, and (or) video at 88 sites within the geophysical survey area. Sediment grab samples were collected at 72 of the 88 sampling sites, video was acquired at 68 sites, and photographs of the river bottom were taken at 38 sites. These survey data are used to characterize the riverbed by identifying sediment-texture and riverbed morphology. More information can be found on the web page for the Woods Hole Coastal and Marine Science Center field activity: https://cmgds.marine.usgs.gov/fan_info.php?fan=2012-024-FA. Data collected during the 2012 survey can be obtained here: https://doi.org/10.5066/F7PG1Q7V.
Supplemental_Information:
More information can be found on the WHCMSC Field Activity webpage: https://cmgds.marine.usgs.gov/fan_info.php?fan=2012-024-FA. Data collected during the 2012 survey can be obtained here: https://doi.org/10.5066/F7PG1Q7V.
  1. How might this data set be cited?
    U.S. Geological Survey, 2017, Acquisition log maintained in 2012 by the U.S. Geological Survey in the Connecticut River during field activity 2012-024-FA (PDF of scanned spreadsheet): data release DOI:10.5066/F7PG1Q7V, U.S. Geological Survey, Coastal and Marine Geology Program, Woods Hole Coastal and Marine Science Center, Woods Hole, Massachusetts.

    Online Links:

    This is part of the following larger work.

    Ackerman, Seth D., Foster, David S., Moore, Eric M., Irwin, Barry J., Blackwood, Dann S., and Sherwood, Christopher R., 2017, High-Resolution Geophysical and Sampling Data Collected at the Mouth of the Connecticut River, Old Saybrook to Essex, Connecticut, 2012: data release DOI:10.5066/F7PG1Q7V, U.S. Geological Survey, Reston, VA.

    Online Links:

    Other_Citation_Details:
    Suggested citation: Ackerman S.D., Foster D.S., Moore E.M., Irwin B.J., Blackwood D.S., and Sherwood, C.R., 2017, High-resolution geophysical and sampling data collected at the mouth of the Connecticut River, Old Saybrook to Essex, Connecticut, 2012: U.S. Geological Survey data release, https://doi.org/10.5066/F7PG1Q7V.
  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -72.421933
    East_Bounding_Coordinate: -72.327020
    North_Bounding_Coordinate: 41.392592
    South_Bounding_Coordinate: 41.239780
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
    Beginning_Date: 15-Sep-2012
    Ending_Date: 23-Sep-2012
    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?
    2. What coordinate system is used to represent geographic features?
  7. How does the data set describe geographic features?
    Entity_and_Attribute_Overview:
    The spreadsheet in the PDF (2012-024-FA_logbook_scanned.pdf) contains the following columns for pages 1-13 that are relevant to the geophysical portion of field activity 2012-024-FA:
    JD (Julian Day), Time UTC, SWATHplus line name, 424 (sgy) (seismic-reflection acquisition), HYPACK (*.JD) (navigation acquisition), SVP (sound velocity profile acquisition collected), Comments. Within the spreadsheet, the first several rows describe the acquisition equipment.
    The definitions of the columns of data are as follows:
    JD: Julian Day
    Time UTC: Time in Coordinated Universal Time
    Subx(*.sxr): Acquisition system for the SWATHplus interferometric sonar.
    424 (*.sgy): Seismic-reflection acquisition system - EdgeTech 424 sub-bottom system.
    SVP: sound velocity profiler used to acquire sound velocity within the water column. These data are generally used in conjunction with the multibeam echosounder to define the velocity structure of the water column and reduce refraction artifacts in the swath sonar data.
    Comments: Additional comments about data acquisition for all systems on the USGS Field Activity 2012-024-FA.
    The sampling portion of the survey began on Friday Sept 21. The format of the spreadsheet changed beginning on page 14 to the following columns:
    JD (Julian Day), Station Number, Time UTC, depth in feet, DVD time, DVD number, Tape number, sample, still number, Target station, comment. Within the spreadsheet, the first several rows describe the acquisition equipment.
    The definitions of the columns of data are as follows:
    JD: Julian Day
    Sta#: sampling site number or name
    Time UTC: Time in Coordinated Universal Time
    depth_ft; DVD time, DVD#, Tape#, still_no: NONE OF THESE FIELDS WERE USED
    sample: this was marked as Y (yes) or N (no); indicating if a sample was successful
    Tgt_sta: This was a preset value of the target sampling station. As target sites were occupied, the new sequential station numbering system was used to assign site numbers.
    Comments: Additional comments about data acquisition for all systems on the USGS Field Activity 2012-024-FA. This often includes a qualitative visual observation of the sediment that was collected. This observation should not be used, please refer to the sediment sample dataset for laboratory analyses (https://cmgds.marine.usgs.gov/data/field-activity-data/2012-024-FA/data/samples/2012-024-FA_samples.zip)
    Not all of the fields in the logbook were used. Although some notes and updates were made to the logbook, additional errors in the log-keeping may exist that have not been corrected.
    The cleaned up version of the logbook (2012-024-FA_logbook_clean.pdf) has the same column headings as described above for the scanned version.
    Entity_and_Attribute_Detail_Citation: U.S. Geological Survey

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
    • U.S. Geological Survey
  2. Who also contributed to the data set?
  3. To whom should users address questions about the data?
    Seth Ackerman
    U.S. Geological Survey
    Geologist
    384 Woods Hole Rd.
    Woods Hole, MA
    USA

    508-548-8700 x2315 (voice)
    508-457-2310 (FAX)
    sackerman@usgs.gov

Why was the data set created?

To provide the data acquisition logs. This logbook is invaluable in sorting out issues and problems related to data acquisition. The log book contains information about navigation, seismic and swath sonar acquisition, and the collection of sediment sample, video and photograph dataset.

How was the data set created?

  1. From what previous works were the data drawn?
  2. How were the data generated, processed, and modified?
    Date: Sep-2012 (process 1 of 3)
    The logbook was maintained by the technical and scientific staff during data acquisition. The PDF is a scan of the printed original Excel spreadsheet which contains information about navigation systems, swath sonar and seismic-reflection systems, sediment sampling information and other misc notes from the survey. Person who carried out this activity:
    Seth Ackerman
    U.S. Geological Survey
    Geologist
    384 Woods Hole Rd.
    Woods Hole, MA
    USA

    508-548-8700 x2315 (voice)
    508-457-2310 (FAX)
    sackerman@usgs.gov
    Date: 27-Dec-2017 (process 2 of 3)
    To make the published logbook more easily readable, a cleaned up version of the original logbook was made. Handwritten notes on the scanned version were added/updated on the original log. The cleaned-up logbook is included here as a PDF in gray-scale without the background cell colors that may make the scanned version difficult to read. This cleaned up PDF is called 2012-024-FA_logbook_clean.pdf Person who carried out this activity:
    Seth Ackerman
    U.S. Geological Survey
    Geologist
    384 Woods Hole Rd.
    Woods Hole, MA
    USA

    508-548-8700 x2315 (voice)
    508-457-2310 (FAX)
    sackerman@usgs.gov
    Date: 08-Sep-2020 (process 3 of 3)
    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?

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

  1. How well have the observations been checked?
    This logbook contains information and notes kept during the geophysical and sampling survey. Corrections were made as they were noticed and updated as needed in the handwritten marked-up version and the cleaned up version of the logbook.
  2. How accurate are the geographic locations?
  3. How accurate are the heights or depths?
  4. Where are the gaps in the data? What is missing?
    This file represents the official, final acquisition log for USGS Field Activity 2012-024-FA.
  5. How consistent are the relationships among the observations, including topology?
    This logbook was maintained during U.S. Geological Survey Field Activity 2012-024-FA conducted in the Connecticut River in 2012. The original Excel file was printed and marked up by hand as the data were processed to document some additional acquisition and processing notes as well as correct log-keeping errors made in the original log. A cleaned up version of the logbook is also provided.

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 These data are NOT to be used for navigation. Mariners should refer to the appropriate nautical chart. 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)
    Seth Ackerman
    U.S. Geological Survey
    Geologist
    384 Woods Hole Rd.
    Woods Hole, MA
    USA

    508-548-8700 x2315 (voice)
    508-457-2310 (FAX)
    sackerman@usgs.gov
  2. What's the catalog number I need to order this data set? USGS data release 2012-024-FA FA_logbook from the Connecticut River (2012-024-FA_logbook.zip). The zip file contains the logbook in PDF format (2012-024-FA_logbook_scanned.pdf), the cleaned up logbook (2012-024-FA_logbook_clean.pdf; as described in process step 2) and metadata files in standard formats.
  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 a PDF of a scanned spreadsheet of the data acquisition logbook and associated metadata. To utilize these data, the user must have software capable of viewing a PDF file.

Who wrote the metadata?

Dates:
Last modified: 18-Mar-2024
Metadata author:
Seth Ackerman
U.S. Geological Survey
Geologist
384 Woods Hole Rd.
Woods Hole, MA
USA

508-548-8700 x2315 (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 person is no longer with USGS. (updated on 20240318)
Metadata standard:
FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)
This page is <https://cmgds.marine.usgs.gov/catalog/whcmsc/field_activities/2012_024_fa/2012-024-FA_logbook.faq.html>
Generated by mp version 2.9.51 on Wed Apr 24 13:53:35 2024