PRO: Projection information record where TME indicates Transverse Mercator and the central meridian of -75 indicates UTM, zone 18. The name of the ellipsoid followed by the semi-major axis in meters and the flattening ration. This typically contains the survey participants, the vessel name, other agencies involved with the survey, and the location of the survey.ĮLL: Ellipsoid information. INF: General survey information filled in by the data technician.
Keywords and the information they provide are as follows:įTP: The first record located at the top of the header used to identify the file format. The times recorded in the navigation file are in UTC. Latitude and longitude values are specified in Decimal degrees. Longitudes are given to the nearest 0.000001. Latitudes are given to the nearest 0.000001. Horizontal positions are specified in geographic coordinates, that is, latitude and longitude.
#Hypack manual software#
Geological Survey, 2014, Text files of the navigation logged with HYPACK Software during survey 2012-005-FA conducted in Baltimore, Washington, and Norfolk Canyons by the U.S. Geological Survey involvement in this effort, see.
These data can be used to further our understanding of passive continental margin processes during the Holocene, as well as providing valuable information regarding potential submarine geohazards. Geologial Survey aboard the motor vessel Tiki XIV near three United States mid-Atlantic margin submarine canyons. In 2012, chirp seismic-reflection data was collected by the U.S. A major goal of these surveys is providing a continuous view of bathymetry and shallow stratigraphy at the shelf edge in order to assess levels of geological activity during the current sea level highstand. Geological Survey in 2012.Ī large number of high-resolution geophysical surveys between Cape Hatteras and Georges Bank have been conducted by federal, state, and academic institutions since the turn of the century. Text files of the navigation logged with HYPACK Software during survey 2012-005-FA conducted in Baltimore, Washington, and Norfolk Canyons by the U.S. What legal disclaimers am I supposed to read?.What's the catalog number I need to order this data set?.Are there legal restrictions on access or use of the data?.How can someone get a copy of the data set?.How consistent are the relationships among the data, including topology?.Where are the gaps in the data? What is missing?.How accurate are the heights or depths?.How accurate are the geographic locations?.How well have the observations been checked?.How reliable are the data what problems remain in the data set?.What similar or related data should the user be aware of?.How were the data generated, processed, and modified?.From what previous works were the data drawn?.To whom should users address questions about the data?.Who are the originators of the data set?.How does the data set describe geographic features?.How does the data set represent geographic features?.What is the general form of this data set?.Does the data set describe conditions during a particular time period?.What geographic area does the data set cover?.