U.S. Geological Survey St. Petersburg Coastal and Marine Science Center
20170213
Single-Beam Bathymetric Data collected with Personal Watercraft
collected along the Fire Island, New York shoreface (2014) in XYZ
ASCII text file format
Tabular digital data
U.S. Geological Survey Data Series
DS 1034
St. Petersburg, FL
St. Petersburg Coastal and Marine Science Center
http://pubs.usgs.gov/ds/1034/ds1034_data_downloads.html
Timothy R. Nelson
Jennifer L. Miselis
Cheryl J. Hapke
Owen T. Brenner
Rachel E. Henderson
Billy J. Reynolds
Kathleen E. Wilson
20170213
Bathymetry Data Collected in October 2014 from Fire Island, New York: the Wilderness Breach, Shoreface, and Bay
U.S. Geological Survey Data Series
DS 1034
St. Petersburg, FL
St. Petersburg Coastal and Marine Science Center
https://doi.org/10.3133/ds1034
Scientists from the U.S. Geological Survey St. Petersburg Coastal
and Marine Science Center in St. Petersburg, Florida, conducted a
bathymetric survey of Fire Island, New York, from October 5 to 10,
2014. The U.S. Geological Survey is involved in a post-Hurricane
Sandy effort to map and monitor the morphologic evolution of the
wilderness breach, which formed in October 2012 during Hurricane
Sandy, as part of the Hurricane Sandy Supplemental Project GS2-2B.
During this study, bathymetry data were collected, using single-beam
echo sounders and global positioning systems mounted to personal
watercraft, along the Fire Island shoreface and within the
wilderness breach, Fire Island Inlet, Narrow Bay, and Great South
Bay east of Nicoll Bay. Additional bathymetry and elevation data
were collected using backpack and wheel-mounted global positioning
systems along the subaerial beach (foreshore and backshore), and
flood shoals and shallow channels within the wilderness breach and
adjacent shoreface.
To determine the change Hurricane Sandy caused in the shoreface
morphology and breach evolution at Fire Island, New York, USA,
scientists from the U.S. Geological Survey (USGS) St. Petersburg
Coastal and Marine Science Center (SPCMSC) conducted a bathymetric
survey of Fire Island from October 5 to 10, 2014. The objectives of the
data collection effort were to map the morphology of the wilderness
breach and adjacent shoreface, Fire Island Inlet, Narrow Bay, and
Great South Bay east of Nicoll Bay the shoreface as part of the USGS
Hurricane Sandy Supplemental Project GS2-2B. This dataset,
201410_Single_Beam_XYZ_Shoreface.zip, consists of single-beam
elevation and global positioning system (GPS) data collected with personal watercraft (PWC).
20141005
20141010
ground condition
None planned
-72.9246748000007
-72.8616766000009
40.7307404000067
40.7000024000067
ISO 19115 Topic Category
elevation
oceans
geoscientificInformation
imageryBaseMapsEarthCover
ISO 19115 Topic CategoryGeneral
marine geology
bathymetry
Digital Elevation Model (DEM)
mapping
single-beam
geophysical
shoals
barrier island
U.S. Geological Survey
USGS
Coastal and Marine Geology Program
CMGP
St. Petersburg Coastal and Marine Science Center
SPCMSC
Hurricane Sandy Supplemental: Fire Island
Hurricane Sandy
2014-325-FA
Geographic Names Information System (GNIS)
United States
US
New York
NY
Fire Island
Fire Island National Seashore
Otis Pike Fire Island High Dune Wilderness
Bellport Bay
Fire Island Inlet
Great South Bay
Narrow Bay
Atlantic Ocean
General
the wilderness breach
General
2014
The U.S. Geological Survey requests that it be referenced as the originator of this dataset in any future products or research derived from these data.
These data should not be used for navigational purposes.
Timothy R. Nelson
U.S. Geological Survey
mailing and physical address
600 4th Street South
St. Petersburg
FL
33701-4846
USA
727-502-8098
727-502-8182
trnelson@usgs.gov
Timothy R. Nelson
Jennifer L. Miselis
Cheryl J. Hapke
Kathleen E. Wilson
Rachel E. Henderson
Owen T. Brenner
Billy J. Reynolds
Mark E. Hansen
20160707
Coastal Bathymetry Data Collected in June 2014 from Fire Island, New York: the Wilderness Breach and Shoreface
U.S. Geological Survey Data Series
DS 1007
St. Petersburg, FL
St. Petersburg Coastal and Marine Science Center
https://doi.org/10.3133/ds1007
The accuracy of the data is determined during data collection. This
dataset is derived from a single field survey using identical
equipment, setup procedures, and staff; therefore, the dataset is internally
consistent. Methods are employed to maintain data collection
consistency. During setup, each piece of equipment is isolated to
obtain internal and external offset measurements with respect to the
survey platform. All the critical measurements are recorded manually
and digitally entered into their respective programs. For
single-beam soundings, distance between the transducer and GPS
antenna were measured for each personal watercraft and accounted for
during post-processing.
The U.S. Geological Survey St. Petersburg Coastal and Marine Science
Center collected shallow water bathymetric data in the wilderness
breach, Bellport Bay, Narrow Bay, Great South Bay east of Nicoll Bay,
Fire Island Inlet, and the ocean shoreface within approximately 2.5
kilometers (km) of the wilderness breach. Single-beam soundings were
collected in the wilderness breach (and associated flood and ebb tidal
shoals), Fire Island Inlet, Narrow Bay, and the eastern end of Great
South Bay. This zip archive contains the post-processed single-beam
bathymetric data (x, y, z) acquired during a single field survey, in
October 2014.
This is a complete post-processed x,y,z bathymetric data point file acquired with personal watercrafts along the shoreface of Fire Island, NY.
The GPS antenna and receiver acquisition configuration used at the
base station was duplicated on the survey vessel (rover). The
base receiver and the rover receiver recorded their positions
concurrently at 10 hertz(Hz) recording intervals throughout the survey.
All processed measurements were referenced to the base station
coordinates. All static base station GPS sessions were submitted
for processing to the Online Positioning User Service (OPUS),
which was created by the National Oceanic and Atmospheric
Administration/National Geodetic Survey (NOAA/NGS). OPUS results
provided an error measurement for each daily solution with a
horizontal accuracy estimated as 0.007 m root mean squared (RMS).
The combined horizontal error was assumed to be at most half of
the vertical offset.
0.087 m
Static GPS data were processed using NOAA/NGS OPUS software and
kinematic GPS data were processed with GrafNav v8.50 software by
Novatel and Matlab.
The GPS antenna and receiver acquisition configuration used at the
base station was duplicated on the survey vessel (rover). The
base receiver and the rover receiver recorded their positions
concurrently at 10 Hz recording intervals throughout the survey.
All processed measurements were referenced to the base station
coordinates. OPUS results provided an error measurement for each
daily solution. Applying these error measurements, the vertical
accuracy of the base station was estimated to be 0.007 m root mean
squared (RMS). The kinematic (rover) trajectories were processed
using GrafNav v8.50 software by Novatel and Matlab. Occurrences
where a personal watercraft trackline crosses itself were used to
determine vertical error. The calculated RMS error was 0.165 M.
The combined vertical error from base station coordinate
solutions, rover trajectories, and datum transformations is 0.174
m.
0.174 m
Static GPS data were processed using NOAA/NGS OPUS software and
kinematic GPS data were processed with GrafNav v8.50 software by
Novatel and Matlab.
GPS Acquisition: Horizontal and vertical positioning of each
vessel and backpack was were collected determined using a
base-rover configuration. Data were recorded at 10 Hertz (Hz)
using Ashtech ProFlex™ 500 Global Navigation Satellite System
(GNSS) receivers with Thales choke ring antennas. Three stationary
base stations (REST, VC, and U374) were occupied during the
surveys. The stationary base at published NGS benchmark U374
(Permanent Identification number (PID#) KU0206) was equipped with
an Inmarsat Broadband Global Area Network (BGAN) satellite uplink
system for remote monitoring of the base station. U374
consisted of an Ashtech Proflex 500 GNSS receiver and an Ashtech
choke ring antenna with a vertical offset of 1.24 meters (m). GPS
data acquired by the PWCs, backpack, wheel-mount, and the REST and
VC base stations were downloaded at the end of each survey day. A
small segment of the U374 data was downloaded via the BGAN network
nightly to ensure the system was operating properly. Reference
station coordinates were verified with Continuously Operating
Reference Stations (CORS) stations using OPUS,
(http://www.ngs.noaa.gov/OPUS/). OPUS computed reference positions
had a vertical error of 0.007 m and horizontal errors of 0.8 cm
and 0.6 cm for East-West and North-South, respectively.
2014
U.S. Geological Survey St. Petersburg Coastal and Marine Science Center
Billy J. Reynolds
Engineering Technician
mailing and physical address
600 4th St. S
Saint Petersburg
FL
33701
USA
727-502-8067
727-502-8181
breynolds@usgs.gov
Single-Beam Sounding Acquisition: The single-beam bathymetric data
were collected on two Yamaha (2010 and 2013) VX Deluxe personal
watercraft. HYPACK version 2013 was used for positioning and
navigation during the survey. Depth soundings were recorded at 10
Hz using an Odom Ecotrac CV-100 Digital Hydrographic Echo Sounder
system with 200 kHz transducers with 4-degree (vessel 1) and
9-degree (vessel 2) transducers. Soundings were merged into a raw
data file (.raw) and a sounding file (.bin) in HYPACK. Each file
was named according to transect number and coordinated universal
time (UTC). Water column sound velocity measurements were
collected periodically throughout the survey, using a SonTek
CastAway conductivity, temperature, and depth (CTD) sensor. Data
were processed using SonTek CastAway CTD software version 1.5.
2014
U.S. Geological Survey St. Petersburg Coastal and Marine Science Center
Timothy R. Nelson
Geologist
mailing and physical address
600 4th St. S
Saint Petersburg
FL
33701
USA
727-502-8098
727-502-8182
trnelson@usgs.gov
Single-Beam Differentially Corrected Navigation Processing:
Positions and elevations associated with each sounding were
post-processed using differential corrections derived from the
base/rover setup. Applying the base station coordinates, GPS
data acquired from the rover were processed to the concurrent GPS
session data at the base station- using GrafNav version 8.5
software (Waypoint Product Group). The horizontal and vertical
coordinates were recorded in the World Geodetic System of 1984
(WGS84) reference frame and exported as an ASCII file for each
vessel and each survey day.
2014
U.S. Geological Survey St. Petersburg Coastal and Marine Science Center
Billy J. Reynolds
Engineering Technician
mailing and physical address
600 4th St. S
Saint Petersburg
FL
33701
USA
727-502-8067
727-502-8181
breynolds@usgs.gov
Single-Beam Processing: Soundings were merged with processed Differential GPS
data and sound velocity profiles using Matlab to visually analyze
single-beam soundings and correct for errors such as elevation
outliers and dropouts associated with wave breaking in the surf
zone. When this is suspected, a corrected seafloor elevation was
manually digitized by analyzing the complete waveform signal
recorded by the Odom within the .bin data file. The soundings were
then corrected for the speed of sound associated with the mean
water temperature and salinity. A moving average filter was then
applied to the soundings in order to reduce instrument noise and
noise associated with the pitch and roll of the PWC. The soundings
were referenced to the height of the GPS antenna and subsequently
to the WGS84 ellipsoid.
2014
U.S. Geological Survey St. Petersburg Coastal and Marine Science Center
Timothy R. Nelson
Geologist
mailing and physical address
600 4th St. S
Saint Petersburg
FL
33701
USA
727-502-8098
727-502-8182
trnelson@usgs.gov
Single-Beam Datum transformation: NOAA’s VDatum v3.3 was used to
transform single beam data points (x, y, and z data) from their
acquisition datum (WGS84) to the North American Datum of 1983
(NAD83) reference frame and the North American Vertical Datum of
1988 (NAVD88) elevation using the National Geodetic Survey (NGS)
geoid model of 2012A (GEOID12A). For conversion from the WGS84
ellipsoid to NAVD88 there is a total of 5.4 cm of uncertainty in
the transformation
(http://vdatum.noaa.gov/docs/est_uncertainties.html).
2014
U.S. Geological Survey St. Petersburg Coastal and Marine Science Center
Timothy R. Nelson
Geologist
mailing and physical address
600 4th St. S
Saint Petersburg
FL
33701
USA
727-502-8098
727-502-8182
trnelson@usgs.gov
Single-Beam Error Analysis: The accuracy of the single-beam
soundings was evaluated by identifying locations where survey
track lines either crossed or were within a horizontal distance of
0.25 m of each other. Any track line associated with a crossing
that had an elevation differing by greater than 0.6 m, compared to
crossing lines, was removed. Evaluation of the remaining track
line crossings indicated there was an overall mean difference of
3.8 cm (based on 210 crossings) and (root mean square) RMS error
of 16.5 cm (based on 696 crossings). Applying the square root of
the sum of the datum conversion uncertainty (5.4 cm) and the
sounding uncertainty (16.5 cm) results in a combined vertical
error of 17.4 cm. Horizontal uncertainty is assumed to be at most
half of the vertical uncertainty (8.7 cm).
2015
U.S. Geological Survey St. Petersburg Coastal and Marine Science Center
Timothy R. Nelson
Geologist
mailing and physical address
600 4th St. S
Saint Petersburg
FL
33701
USA
727-502-8098
727-502-8182
trnelson@usgs.gov
Export Transects: Using Matlab, partial lines (the result of
restarting the line in the middle of a transect) were subsequently
merged with similar segments to create one seamless line. When
repeats were present, only a single line was retained. Vessel 1
elevations were adjusted to those of vessel 2 for consistency (3.8
cm). The data were then combined into a single ASCII file
consisting of position, elevation, line number, vessel number, and
time of sampling.
2015
201410_PWC_XYZ.csv
U.S. Geological Survey St. Petersburg Coastal and Marine Science Center
Timothy R. Nelson
Geologist
mailing and physical address
600 4th St. S
Saint Petersburg
FL
33701
USA
727-502-8098
727-502-8182
trnelson@usgs.gov
Extract the Fire Island shoreface XYZ: The adjusted single-beam
data points were imported into ArcGIS using the ”Create Feature
Class from XY Table” tool in ArcCatalog. A polygon was then
created surrounding data points within the Fire Island shoreface
in ArcGIS. The polygon vertices were converted to points using the
“Feature Vertices to Points” tool, “Add XY Coordinates”
tool, and exported as an ASCII file using the “Export Feature
Attribute to ASCII” tool. This polygon ASCII file was
subsequently imported into Matlab. PWC data points within or on
this polygon were then extracted and saved as an ASCII file.
2015
201410_Single_Beam_XYZ_Shoreface.csv
U.S. Geological Survey St. Petersburg Coastal and Marine Science Center
Timothy R. Nelson
Geologist
mailing and physical address
600 4th St. S
Saint Petersburg
FL
33701
USA
727-502-8098
727-502-8182
trnelson@usgs.gov
Point
Point
484,812
Universal Transverse Mercator
18
0.9996
-75
0.0
500000
0.0
row and column
1.000000
1.000000
meters
North American Datum of 1983
Geodetic Reference System 80
6378137
298.257
North American Vertical Datum 1988
0.01 m
meter
Attribute values
201410_Single_Beam_XYZ_Shoreface.csv
Comma delimited xyz file
U.S. Geological Survey
Easting_m
NAD83 UTM x-axis coordinate (Zone 18N)
U.S. Geological Survey
675322
680015
Meter
Northing_m
NAD83 UTM y-axis coordinate (Zone 18N)
U.S. Geological Survey
4507572
4511052
Meter
Elev_NAVD88_m
z-value (elevation) in NAVD88
U.S. Geological Survey
-19.07
-0.16
Meter
Line_Num
Transect Line Number
U.S. Geological Survey
1
65.5
Vessel
Vessel ID Number
U.S. Geological Survey
1
2
Date
Date and Time of Sample
U.S. Geological Survey
6 October 2014 13:55:54
10 October 2014 14:56:25
Comma delimited xyz file containing UTM X, UTM Y locations and corresponding Z elevation value, all in meters.
Single-beam bathymetric point data for the Fire Island shoreface,
Fire Island, NY created from data collected between October 5, 2014
and October 10, 2014.
U.S. Geological Survey, St Petersburg Coastal and Marine Science Center, St. Petersburg, FL
Timothy R. Nelson
mailing and physical address
600 4th Street South
St. Petersburg
FL
33701
USA
727-502-8098
727-502-8182
trnelson@usgs.gov
U.S. Geological Survey DS 1034
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.
ASCII
ZIP
6.66
http://pubs.usgs.gov/ds/1034/downloads/201410_Single_Beam_XYZ_Shoreface.zip
None
20160615
20170106
U.S. Geological Survey
Timothy R. Nelson
Geologist
mailing and physical address
600 4th Street South
St. Petersburg
FL
33701
USA
727-502-8098
727-502-8182
trnelson@usgs.gov
Content Standard for Digital Geospatial Metadata
FGDC-STD-001-1998