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Hypack survey software software#

Real-Time Kinematic GPS (RTK-GPS) height data were collected, processed and recorded using navigation software from HYPACK, Inc (). The DGPS positional accuracy is estimated to be within 3-5 m WAAS enable DGPS accuracy is estimated to be less than 3 m and the accuracy of RTK-GPS is estimated to be less than 1 m. These data were typically incorporated into the geophysical data during acquisition and logged to these HYPACK files in the event that post-processing the horizontal and vertical positional information was necessary. The data were processed and recorded using navigation software from HYPACK, Inc (). Real-Time Kinematic GPS (RTK-GPS), Differential GPS (DGPS) and Wide Area Augmentation System-enabled DGPS (DGPS+WAAS) data were collected during this survey using an Ashtech ProFlex 800, Coda Octopus F185R, Hemisphere DGPS, and Sitex Marine Electronics Depthfinder receivers. How reliable are the data what problems remain in the data set? Person who carried out this What similar or related data should the user be aware of? Filenames that start with 000 have no geophysical data line associated with them because they were logging navigation associated with sediment samples and bottom photographs. Times are recorded in UTC (Coordinate Universal Time). For example, filename 24_1816.203 represents planned survey HYPACK line number 24, start time 1816 and Julian Day 203. The filenames are in the format of linenumber_starttime.julianday. Raw HYPACK navigation files were transferred from the navigation acquisition computer to a centralized data server on the survey vessel for accessibility and archival.

How were the data generated, processed, and modified? Date: 3 (process 1 of 2).

Times were recorded in UTC (Coordinate Universal Time). File name convention is LLL_TTTT.DDD, where LLL is the HYPACK line number, TTTT is the 24 hour time for the beginning of the file, and DDD is the Julian day (JD). Raw navigation data were saved in HYPACK format (). More information about the USGS survey conducted as part of the Hurricane Sandy Response- Geologic Framework and Coastal Vulnerability Study can be found at the project website or on the WHCMSC Field Activity Web pages: and

Processed data in raster and vector format are released here for the swath bathymetry, sidescan sonar, and seismic-reflection profiles. Data collected during the 2014 cruise include swath bathymetry, sidescan sonar, chirp and boomer seismic-reflection profiles, acoustic Doppler current profiler, and sample and bottom photograph data. Geological Survey cruise was conducted in the summer of 2014 to map the inner continental shelf of the Delmarva Peninsula using geophysical and sampling techniques to define the geologic framework that governs coastal system evolution at storm-event and longer timescales. The Delmarva Peninsula is a 220-kilometer-long headland, spit, and barrier island complex that was significantly affected by Hurricane Sandy.

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?.

Text files of the navigation logged with HYPACK Software during survey 2014-002-FA conducted along the Delmarva Peninsula, MD and VA by the U.S.