U.S. Geological Survey
2016
Tracklines of a multibeam survey of the sea floor southwest of Montauk Point, New York, in 1998 (polyline shapefile, geographic, WGS 84)
1.0
vector digital data
data release
DOI:10.5066/F7Z899GG
Woods Hole Coastal and Marine Science Center, Woods Hole, MA
U.S. Geological Survey, Coastal and Marine Geology Program
https://doi.org/10.5066/F7Z899GG
https://www.sciencebase.gov/catalog/file/get/56cdc92ee4b0b1892d9f0c2f?name=mont_nav.zip
Bradford Butman
William W. Danforth
John E. Hughes Clarke
Richard P. Signell
William C. Schwab
2016
Bathymetry and backscatter intensity of the sea floor south of Long Island, New York
1.0
data release
DOI:10.5066/F7Z899GG
Reston, VA
U.S. Geological Survey
https://doi.org/10.5066/F7Z899GG
https://www.sciencebase.gov/catalog/item/56a8e8a2e4b0b28f1184dc54
Surveys of the bathymetry and backscatter intensity of the sea floor south of Long Island, New York, were carried out in November 1998 using a Simrad EM1000 multibeam echosounder mounted on the Canadian Coast Guard ship Frederick G. Creed. The purpose of the multibeam echosounder surveys was to explore the bathymetry and backscatter intensity of the sea floor in several areas off the southern coast of Long Island along the 20-meter isobath. Survey areas offshore of Fire Island Inlet, Moriches Inlet, Shinnecock Inlet, and southwest of Montauk Point were about 1 kilometer (km) wide and 10 km long. The area was mapped by the U.S. Geological Survey with support from the Canadian Hydrographic Service and the University of New Brunswick.
This data release makes multibeam echosounder data from the 1998 survey of the sea floor southwest of Montauk Point, New York, available in digital form. The navigation shapefile shows how the survey was carried out along tracklines running northeast-southwest approximately parallel to the local bathymetry and spaced about 100 m apart. The tracklines also can be used to identify data collected directly below the ship (at nadir).
Other data sets from this survey may be found in Butman and others (2016) (see larger work citation).
19981107
19981108
ground condition
None planned
-72.265335
-72.129548
40.938358
40.877317
USGS Metadata Identifier
USGS:56cdc92ee4b0b1892d9f0c2f
none
tracklines
navigation
polyline shapefile
multibeam
sea floor
sea floor mapping
Simrad EM1000
EM 1000
Canadian Coast Guard ship (CCGS) Frederick G. Creed
WHCMSC field activity 1998-015-FA
Woods Hole Coastal and Marine Science Center (WHCMSC)
Coastal and Marine Geology Program (CMGP)
U.S. Geological Survey (USGS)
Canadian Hydrographic Service
University of New Brunswick
ISO 19115 Topic Category
oceans
location
USGS Thesaurus
navigational data
marine geophysics
geospatial datasets
none
Montauk Point
Long Island
New York Bight
Middle Atlantic Bight
mid-Atlantic Bight
New Jersey
New York
North Atlantic Ocean
none
1998
none
none
U.S. Geological Survey
Bradford Butman
mailing and physical address
Woods Hole Coastal and Marine Science Center
384 Woods Hole Road
Woods Hole
MA
02543
USA
508-548-8700 x2212
bbutman@usgs.gov
mont_nav_browse.jpg
Image of tracklines of a multibeam survey of the sea floor southwest of Montauk Point, New York. File is located in the compressed zip file.
JPEG
Microsoft Windows Vista Version 6.1 (Build 7601) Service Pack 1; ESRI ArcCatalog 9.3.1.4095
Schwab, W.C.
Thieler, E.R.
Denny, J.F.
Danforth, W.W.
2000
Seafloor sediment distribution off southern Long Island, New York
Open-File Report
00-243
Reston, VA
U.S. Geological Survey
http://pubs.usgs.gov/of/2000/of00-243/
All navigation data were processed in the same manner. Navigation data were edited on-screen using the SwathEd routine jview to remove undesirable points, including turns at the ends of survey lines. Jview also rejects stray GPS fixes outside of the survey area, as set by the operator (see process steps for bathymetry). The Long Island surveys were assigned a block of line numbers beginning with 3000. GPS position data began to degrade on line 3045 and went out completely on line 3047. GPS data were regained on line 3048. The loss of navigation resulted in a data offset on lines 3045-3047. The offset is not corrected.
This shapefile contains all edited tracklines from 1998 multibeam survey southwest of Montauk Point, New York. Other data sets collected offshore of Long Island, New York, on WHCMSC field activity 1998-015-FA may be found in Butman and others (2016) (see larger work citation).
These data were navigated with a Differential Global Positioning System (DGPS); they are accurate to +/- 3 meters, horizontally.
Canadian Hydrographic Service
William W. Danforth
John E. Hughes Clarke
Unpublished Material
raw navigation data
disc
19981107
19981108
ground condition
none
The multibeam data were collected with a Simrad EM1000 multibeam echosounder mounted on the starboard pontoon of the Canadian Coast Guard ship Frederick G. Creed. The multibeam system utilizes 60 electronically-aimed receive beams spaced at intervals of 2.5 degrees that insonify a strip of sea floor up to 7.5 times the water depth. The horizontal resolution of the beam on the sea floor is approximately 10 % of the water depth. Vertical resolution is approximately 1 % of the water depth. Data were collected along tracklines oriented approximately northeast-southwest, parallel to the local isobaths, and spaced about 100 m apart. The frequency of the sonar was 95 kHz. Sound velocity profiles were obtained and input into the Simrad processing system to correct for refraction. Navigation was by means of differential GPS. Operation of the Simrad EM1000 was carried out by hydrographers of the Canadian Hydrographic Service. The data were collected on Woods Hole Coastal and Marine Science Center field activity 1998-015-FA.
Reformat ASCII navigation data collected by the DGPS receiver into an Excel csv formatted ASCII file using the UNIX awk utility. Spacing between points in the trackline is defined by time (1-second intervals).
2010
mont_nav.shp
U.S. Geological Survey
William W. Danforth
mailing and physical address
Woods Hole Coastal and Marine Science Center
384 Woods Hole Road
Woods Hole
MA
02543
USA
508-548-8700 x2274
wdanforth@usgs.gov
1. Import the csv file as points into ArcGIS using the Import XY data under the tools menu.
2. Export the point data to a shapefile by right clicking on the point data in the data view window and selecting the Export Data function.
3. Reformat the point shapefile into a line shapefile using the VAC Extras tool -> FeatConv -> Points to line v2
2014
U.S. Geological Survey
William W. Danforth
mailing and physical address
Woods Hole Coastal and Marine Science Center
384 Woods Hole Road
Woods Hole
MA
02543
USA
508-548-8700 x2274
wdanforth@usgs.gov
USGS Thesaurus keywords added to the keyword section.
20180720
U.S. Geological Survey
VeeAnn A. Cross
Marine Geologist
Mailing and Physical
384 Woods Hole Road
Woods Hole
MA
02543-1598
508-548-8700 x2251
508-457-2310
vatnipp@usgs.gov
Added keywords section with USGS persistent identifier as theme keyword.
20200810
U.S. Geological Survey
VeeAnn A. Cross
Marine Geologist
Mailing and Physical
384 Woods Hole Road
Woods Hole
MA
02543-1598
508-548-8700 x2251
508-457-2310
vatnipp@usgs.gov
Vector
String
22
0.000001
0.000001
Decimal degrees
D_WGS_1984
WGS_1984
6378137.000000
298.257224
mont_nav.shp
Shapefile showing the tracklines for the 1998 multibeam survey southwest of Montauk Point, New York
USGS
FID
Internal feature number.
Esri
Sequential unique whole numbers that are automatically generated.
Shape
Feature geometry.
Esri
Coordinates defining the features.
Linenum
Trackline number assigned by USGS
USGS
3040
3061
Lon
Longitude at start of line
USGS
-72.26
-72.13
Lat
Latitude at start of line
USGS
40.87
40.93
Year
Year at start of line
USGS
1998
1998
JulDay
Julian Day (day from beginning of year) at start of line
USGS
311
312
Hour
Hour at start of line
USGS
0
23
Minute
Minute at start of line
USGS
3
56
Second
Second at start of line
USGS
2
58
The attributes are the USGS assigned line number, and the latitude, longitude, and time (year, Julian day, hour, minute, second) at the start of line.
U.S. Geological Survey
U.S. Geological Survey - ScienceBase
mailing and physical address
Denver Federal Center
Building 810
MS 302
Denver
CO
80225
USA
1-888-275-8747
sciencebase@usgs.gov
mont_nav.zip: contains mont_nav.shp, other shapefile components, and FGDC-compliant metadata (CSDGM format).
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.
shapefile
ArcGIS 9.3
Esri shapefile
Esri shapefile of navigation tracklines and associated metadata from a multibeam survey southwest of Montauk Point, New York, compressed in a WinZip (version 14) file
zip
.4
https://www.sciencebase.gov/catalog/file/get/56cdc92ee4b0b1892d9f0c2f?name=mont_nav.zip
https://doi.org/10.5066/F7Z899GG
The network resource directs to a landing page where the zip file containing the data can be downloaded.
none
The shapefile of navigation is compressed into a WinZip (version 14) file (mont_nav.zip). To use these data, the user must have software capable of uncompressing the zip file and ArcGIS or another GIS application package capable of viewing the data.
20200810
U.S. Geological Survey
Bradford Butman
mailing and physical address
Woods Hole Coastal and Marine Science Center
384 Woods Hole Road
Woods Hole
MA
02543
USA
508-548-8700 x2212
bbutman@usgs.gov
FGDC Content Standards for Digital Geospatial Metadata
FGDC-STD-001-1998
local time