Cross, VeeAnn A. , 2014, JD104HYPACK.SHP: Parsed HYPACK navigation from April 14, 2010 of U.S. Geological Survey Field Activity 2010-006-FA in Indian River Bay, Delaware (Geographic, WGS 84): Open-File Report 2011-1039, U.S. Geological Survey, Coastal and Marine Geology Program, Woods Hole Coastal and Marine Science Center, Woods Hole, MA.This is part of the following larger work.Online Links:
- <http://pubs.usgs.gov/of/2011/1039/data/navigation/hypack/processed/jd104hypack.zip>
- <http://pubs.usgs.gov/of/2011/1039/html/ofr2011-1039-catalog.html>
Cross, V.A., Bratton, J.F., Michael, H.A., Kroeger, K.D., Green, A., and Bergeron, E., 2014, Continuous Resistivity Profiling and Seismic-Reflection Data Collected in April 2010 from Indian River Bay, Delaware: Open-File Report 2011-1039, U.S. Geological Survey, Reston, VA.Online Links:
This is a Vector data set. It contains the following vector data types (SDTS terminology):
Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest 0.000001. Longitudes are given to the nearest 0.000001. Latitude and longitude values are specified in Decimal degrees.
The horizontal datum used is D_WGS_1984.
The ellipsoid used is WGS_1984.
The semi-major axis of the ellipsoid used is 6378137.000000.
The flattening of the ellipsoid used is 1/298.257224.
Sequential unique whole numbers that are automatically generated.
Coordinates defining the features.
Although the value is represented as a number, the number as a whole doesn't have a particular meaning. Only when the individual parts for hours, minutes, and seconds are broken out does the number have meaning.
| Range of values | |
|---|---|
| Minimum: | -75.194933 |
| Maximum: | -75.074567 |
| Units: | decimal degrees |
| Range of values | |
|---|---|
| Minimum: | 38.570533 |
| Maximum: | 38.61545 |
| Units: | decimal degrees |
| Range of values | |
|---|---|
| Minimum: | 0.2 |
| Maximum: | 9.5 |
| Units: | meters |
Although the value is represented as a number, the number as a whole doesn't have a particular meaning. Only when the individual parts for day, month, and year are broken out does the number have meaning.
| Range of values | |
|---|---|
| Minimum: | 104 |
| Maximum: | 104 |
| Units: | days |
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The purpose of this point shapefile is to provide the parsed data from the raw HYPACK (VER 9.0.5.17) navigation files. The parsed data will contain latitudes, longitudes, and depth values. The depth values are particularly necessary to fill depth data gaps in the continuous resistivity profile GPS data.
donav: files=`ls *.RAW | cut -d. -f1` for file in $files do awk -f awkit $file.RAW > $file.navdep doneThe AWK script "awkit" simply extracts any line of information in the HYPACK file that contains either the string "GPGGA" or "SDDBT" and writes this information to a new file with the extension navdep.
awkit:
{
if ($0 ~ /GPGGA|SDDBT/) {
print $0
}
}
This process step and all subsequent process steps were performed by the same person - VeeAnn A. Cross.
Person who carried out this activity:
(508) 548-8700 x2251 (voice)
(508) 457-2310 (FAX)
vatnipp@usgs.gov
Data sources produced in this process:
doholdhypack:
files=`ls *.navdep | cut -d. -f1`
for file in $files
do
awk -f awkholdhypack $file.navdep > $file.holdhypack
done
awkholdhypack:
BEGIN {
FS = ","
}
{
FS = ","
depth = -9999
if ($1 ~ /GPGGA/)
{
utctime = $2
latdeg = substr($3,1,2)
latmin = substr($3,3,6)
declat = latdeg + (latmin/60)
londeg = substr($5,1,3)
lonmin = substr($5,4,6)
declon = -1 * (londeg + (lonmin/60))
if (NR==1) {
holddepth = -9999
}
else {
printf("%s, %9.6f, %9.6f, %5.1f\n", holdutctime, holddeclon, holddeclat, holddepth)
}
holdutctime = utctime
holdutcdate = utcdate
holddeclon = declon
holddeclat = declat
holddepth = -9999
}
if ($1 ~ /SDDBT/)
{
if ($4 != "")
{
depthreal = $4
holddepth = depthreal
}
else
{
depthreal = -9999
holddepth = -9999
}
}
}
END {
printf("%s, %9.6f, %9.6f, %5.1f\n", holdutctime, holddeclon, holddeclat, holddepth)
}
Data sources used in this process:
Data sources produced in this process:
cat 205_1220.holdhypack \ 008_1251.holdhypack \ 006_1407.holdhypack \ 007_1631.holdhypack \ 004_1635.holdhypack \ 004_1734.holdhypack \ 003_1834.holdhypack \ 002_1856.holdhypack \ 033_1944.holdhypack \ 033_2014.holdhypack \ 033A2014.holdhypack \ 033B2014.holdhypack \ 033_2015.holdhypack \ 033A2015.holdhypack \ 033_2016.holdhypack \ 033_2017.holdhypack \ 123_2025.holdhypack \ 123_2026.holdhypack \ 123A2026.holdhypack \ 034_2026.holdhypack \ 035_2035.holdhypack \ 036_2056.holdhypack \ 037_2109.holdhypack \ 038_2127.holdhypack \ 039_2140.holdhypack \ 040_2159.holdhypack \ 041_2214.holdhypack \ 011_2244.holdhypack \ 010_2254.holdhypack \ 013_2315.holdhypack > jd104hypack.csv
Data sources used in this process:
Data sources produced in this process:
Data sources used in this process:
Data sources produced in this process:
Data sources used in this process:
Data sources produced in this process:
The navigation system used was a Lowrance 480M with an LGC-2000 Global Positioning System (GPS) antenna. The antenna was located directly above the fathometer transducer mount point. GPS data are assumed to be accurate within 10 meters on this survey.
All bathymetry values were acquired by the 200 kHz Lowrance fathometer. The fathometer was mounted on the starboard side of the R/V Knob, directly below the GPS antenna. The Lowrance manufacturer indicates the speed of sound used by the system to calculate depth is 4800 feet/second. The depth values are not corrected for the approximately 0.2 m transducer draft. All depth values are assumed to be accurate to within 1 meter.
This point shapefile represents every valid location fix and accompanying depth parsed from the raw HYPACK ASCII files. Points that fell obviously outside the study area (such as ones with longitude or latitude values of 0) were deleted from the shapefile.
All of the HYPACK files were handled in the same manner.
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.
(508) 548-8700 x2251 (voice)
(508) 457-2310 (FAX)
vatnipp@usgs.gov
Downloadable Data
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.
| Data format: | This WinZip (v. 14) file contains the point shapefile as well as the associated metadata files. in format Shapefile (version ArcGIS 9.2) Size: 0.68 |
|---|---|
| Network links: |
<http://pubs.usgs.gov/of/2011/1039/data/navigation/hypack/processed/jd104hypack.zip> <http://pubs.usgs.gov/of/2011/1039/html/ofr2011-1039-catalog.html> <http://dx.doi.org/10.3133/ofr20111039> |
This zip file contains data available in Esri point shapefile format. The user must have software capable of uncompressing the zip file and reading/displaying the shapefile.
(508) 548-8700 x2251 (voice)
(508) 457-2310 (FAX)
vatnipp@usgs.gov