U.S. Geological Survey
2014
Klein 3000 sidescan-sonar survey lines collected in Moultonborough Bay, Lake Winnipesaukee, New Hampshire by the U.S. Geological Survey in 2005 (Geographic, WGS 84, Esri Polyline Shapefile, 2005-004-FA_SONARTRK).
1.0
vector digital data
data release
DOI:10.5066/F71N7Z4H
Woods Hole Coastal and Marine Science Center, Woods Hole, Massachusetts
U.S. Geological Survey, Coastal and Marine Geology Program
https://doi.org/10.5066/F71N7Z4H
https://cmgds.marine.usgs.gov/data/field-activity-data/2005-004-FA/
https://cmgds.marine.usgs.gov/data/field-activity-data/2005-004-FA/data/backscatter/2005-004-FA_sonartrk.zip
Denny, J.F.
Danforth, W.W.
Worley, C.R.
Irwin, B.J.
2014
High-resolution geophysical and sample data collected in Moultonborough Bay, Lake Winnipesaukee, New Hampshire in 2005, USGS Field Activity 2005-004-FA
1.0
data release
DOI:10.5066/F71N7Z4H
Reston, VA
U.S. Geological Survey
https://doi.org/10.5066/F71N7Z4H
In freshwater bodies of New Hampshire, the most problematic aquatic invasive plant species is Myriophyllum heterophyllum or variable leaf water-milfoil. Once established, variable leaf water-milfoil forms dense beds that can alter the limnologic characteristics of a waterbody, impacting natural lacustrine communities and their habitats. Variable leaf water-milfoil infestations also disrupt recreational uses of waterbodies and have negatively affected swimming, boating, fishing, and property values in and around several lakes and ponds in New Hampshire.
In 1965, Moultonborough Bay, Lake Winnipesaukee became the first waterbody in New Hampshire where variable leaf water-milfoil was observed. Variable leaf water-milfoil is native to the Southeastern and Midwestern areas of the United States where more alkaline waters appear to limit the growth of this plant. Outside its native range, however, it adapts well to the relatively acidic, low-alkalinity, and nutrient-poor conditions of oligotrophic lakes and bays similar to Moultonborough Bay.
In 2005, the New Hampshire Department of Environmental Services (NHDES) collaborated with the U.S. Geological Survey to investigate the distribution (presence and density) of variable leaf water-milfoil in Moultonborough Bay. This study utilized geophysical systems and conventional water-quality measurements to identify lake-floor environments that may provide suitable habitat for the establishment and growth of variable leaf water-milfoil. The results of the study are intended to assist resource managers in federal and state agencies by providing methods for detecting variable leaf water-milfoil and for identifying areas susceptible to infestation. Ultimately, this information may lead to early detection, prevention, and more effective mitigation strategies.
Field activity information for this cruise is available on-line through the U.S. Geological Survey Coastal and Marine Geoscience Data System https://cmgds.marine.usgs.gov/fan_info.php?fa=2005-004-FA.
This data set contains trackline navigation for approximately 37 km of sidescan-sonar data collected by the U.S. Geological Survey during USGS field activity 2005-004-FA within Moultonborough Bay, Lake Winnipesaukee, New Hampshire, 2005. The trackline navigation shows the coverage and location of sidescan-sonar data acquisition. The sidescan-sonar and bottom sample, photographs and video are used to define the sediment distribution and textural variability of the bay floor.
20050726
ground condition
None planned
-71.390470
-71.361160
43.728510
43.710750
USGS Metadata Identifier
USGS:1473368c-cec2-431a-9933-8e3b1f367c17
None
U.S. Geological Survey
USGS
Coastal and Marine Geology Program
CMGP
Woods Hole Coastal and Marine Science Center
WHCMSC
Marine Geology
field activity number 2005-004-FA
USGS CMGP InfoBank ID R-1-05-NH
sidescan
sidescan-sonar
sonar
backscatter
polyline shapefile
survey line
trackline
Klein 3000
Klein
k3k
R/V Rafael
ISO 19115 Topic Category
inlandWaters
location
USGS Thesaurus
navigational data
geophysics
geospatial datasets
None
North America
United States
New Hampshire
Lake Winnipesaukee
Moultonborough Bay
none
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 source of this information.
Jane F. Denny
U.S. Geological Survey
Geologist
mailing and physical address
384 Woods Hole Road
Woods Hole
Massachusetts
02543
USA
508-548-8700 x2311
508-457-2310
jdenny@usgs.gov
https://cmgds.marine.usgs.gov/data/field-activity-data/2005-004-FA/data/backscatter/2005-004-FA_sonartrk.jpg
Image of sidescan-sonar survey tracklines collected in Moultonborough Bay, Lake Winnipesaukee, New Hampshire
JPEG
Microsoft Windows Vista Version 6.1 (Build 7601) Service Pack 1; ESRI ArcCatalog 9.3.1.4095
Denise M. Argue
Richard G. Kiah
Jane F. Denny
Jeffrey R. Deacon
William W. Danforth
Craig M. Johnston
Amy P. Smagula
2007
Relation of Lake-Floor Characteristics to the Distribution of Variable Leaf Water-Milfoil in Moultonborough Bay, Lake Winnipesaukee, New Hampshire, 2005
1.0
document
Scientific Investigations Report
2007-5125
Reston, Virginia
U.S. Geological Survey
https://pubs.usgs.gov/sir/2007/5125/
William W. Danforth
1997
XSonar/ShowImage: A complete system for rapid sidescan-sonar processing and display
1.0
document
Open-File Report
97-686
Reston, VA
U.S. Geological Survey
https://pubs.er.usgs.gov/publication/ofr97686
Attributes relay information about the object ID (FID), Esri Object ID (polyline), length of tracklines (m), line number, type of sonar system used to acquire data, the frequency of the sonar system, swath width of the sonar system, USGS unique cruise identification, the date of acquisition and the Julian Day. Attributes were checked for consistency and for accuracy of descriptive information.
All sidescan-sonar data were collected during USGS cruise 2005-004-FA using a Klein system 3000 sidescan-sonar system. Quality control was conducted during processing of the data. Any spurious data or artifacts were removed or minimized.
This shapefile contains lines 43 - 112 of sidescan-sonar data collected on JD 207(07/26/2005) during USGS field activity 2005-004-FA. Lines 43 - 112 were a 'rerun' of lines 1 - 42 to try to improve on the data quality as there were significant system errors and malfunctions during data collection on JD 206 (07/25/2005). Lines 1 - 42 are not included in this dataset. They were not used for interpretative purposes. Lines 43 - 112 were used to generate the sidescan-sonar mosaic.
Navigation was acquired with Wide Area Augmentation System ( WAAS), which is accurate to + or - 1 to 2 meters, horizontally. Navigation data were acquired with a LGBX Pro receiver and sent directly to the sidescan-sonar acquisition software, L3-Klein Associates, SonarPro. The LGBX Pro received WAAS positions from an antenna located on the port, aft roof of the cabin. The sidescan-sonar towfish was towed at a shallow depth, close to the lake surface due to the shallow waters of the survey area. Layback was measured upon deployment of the towfish. The following offsets are measured prior to deployment of the sidescan-sonar towfish and entered into SonarPro: height of the block, offset from DGPS (WAAS) antenna to the block, and height of the DGPS antenna above the waterline. Considering errors in measuring towfish layback, as well as accuracy of WAAS, horizontal accuracy of the sidescan-sonar data are conservatively assumed to be + or - 10 meters.
U.S. Geological Survey
Unpublished Material
Raw sidescan-sonar data
disc
20070726
ground condition of field activity
none
Data were acquired with an L3-Klein Associates 3000 digital, dual-frequency, sidescan-sonar (www.l-3klein.com). Dual frequencies are nominally 100 (132 kHz) and 500 (445 kHz) kHz. The sidescan-sonar was towed aft the R/V Rafael. Line spacing was 50-meters throughout the survey area. Data files were recorded with SonarPro (2005) in XTF (extended-Triton Format) format at a 0.03-sec ping rate yielding a 50-meter range (100-meter swath). The 100 kHz data were used to generate the sidescan-sonar mosaic. The data range within the sidescan-sonar mosaic (digital number values (DN) of the 8-bit image) is 0 - 254, with the background value (i.e. No DATA) set to 255.
XSonar/ShowImage sidescan-sonar processing software was used to process the raw XTF sonar data following the methodology of Danforth, (1997). A 4 across track x 3 along track pixel median filter was applied to the raw sidescan-sonar data to remove speckle noise and a normalization of 4095 was applied to adjust the dynamic range within the output processed file. Processed data are stored as 8-bit. Navigation were also extracted from the raw data at 30-second intervals and saved in an ASCII file. Quality checks were conducted on the navigation to eliminate spurious or duplicate navigation fixes. The sonar data were further processed to correct for towfish altitude (i.e. proper tracking of the lakefloor), and slant-range and beam pattern distortions inherent in the sonar data. Processed sonar files were then merged with the edited navigation. Processed sonar files were then mapped at a 1-meter resolution in UTM coordinates (UTM, Zone 19N, WGS84, meters) and saved in two XSonar/ShowImage mosaic files representing odd and even (i.e. every other line) sonar tracklines, or files.
Below are the typical parameters for processing with XSonar: File Type: XTF, Low Frequency (132 kHz)
Setup Option: Navigation= Lat/Lon, Navigation Interval= 2 minute
Demultiplexing Range and Filter options: Across track=4 (pixels), Along track= 3 (pixels), Port/Starboard Normalize = 4095 (default), Port High Pass: 65535 (default), Input= 16 bit, Normalize Image= yes.
Beam Pattern Correction options: Number of lines= 100 Ping, overlap=50, Max beam angle= 90 (default), Response angle=55 (default,) Data normalization (0-255)=1 (default), Port/Stbd Tone Adjustment= "on" and "Normal"
Jane F. Denny performed this and all subsequent process steps.
2005
Jane F. Denny
U.S. Geological Survey
Geologist
mailing and physical address
384 Woods Hole Road
Woods Hole
Massachusetts
02543
USA
508-548-8700 x2311
508-457-2310
jdenny@usgs.gov
A c-shell script was used to reformat the output from degrees decimal minutes to decimal degrees. Proj and AWK were used to convert decimal degrees to eastings and northings (based on UTM Zone 19 N, meters, WGS 84) and to reformat the output as a comma delimited ASCII file including headers listing field names (Easting, Northing, Line Number, Julian Day, Hour, Minute, Second, Longitude, Latitude).
2005
The ASCII file (*.csv) was imported into Esri ArcMap 9.0 using Tools - Add XY Data and converted to an event theme. The event theme was then saved to a point shapefile and the projection was defined as Geographic Coordinate System, WGS84 (GCS_WGS_1984). The point shapefile was visually inspected for spurious data points.
2005
The point shapefile containing 30-second navigation was used as input for a tool in VACExtras (version 1.8), a VB collection of tools developed by VeeAnn Cross (USGS-WHCMSC), that converts point data to a new polyline (vector) shapefile, based on the order of records contained within one attribute field. The line number field was used to define the point order and as the unique line identifier.
2005
The length of each line segment was calculated and included in a new attribute field using XTools Pro for ArcGIS desktop (version 6.2.0), specifying UTM Zone 19 N, WGS 84 - meters. Year, System, Swath, Cruise_ID,Frequency and Julian Day (JD) fields were added to the attribute table within ArcMap 9.0.
The vector shapefile was then reprojected to the Geographic Coordinate System, WGS84 using Arc Toolbox, Data Management Tools, Projections and Transformations, Feature, Project.
Arc Toolbox, Data Management Tools, Projections and Transformations, Project was then used to project the shapefile from UTM, Zone 19 N, meters, WGS84 to Geographic Coordinate system, WGS84.
2005
ArcGIS 9.3, Xtools 7.1.0 (Build 738) was used to convert polyines to points using Xtools, Feature Conversion, Convert Features to Points, generating a new shapefile. Xtools was then used to add X,Y coordinates to the new shapefile table, using Xtools, Table Operations, Add X,Y,Z coordinates. The table was then exported to a text file using, Xtools, Table Operations, Export table to txt. The txt file was saved as a *.csv. The *csv can then be used outside of the ArcGIS 9.3 environment to generate trackline data, if neeed.
2014
The online links to the data were updated to reflect the new server hosting the data. Additionally, other small edits could be made to the metadata, such as modifying http to https where appropriate. The metadata date (but not the metadata creator) was edited to reflect the date of these changes.
20170406
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
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.
20200908
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
70
0.000001
0.000001
Decimal degrees
D_WGS_1984
WGS_1984
6378137.000000
298.257224
2005-004-FA_sonartrk
Tracklines for sidescan-sonar system
U.S. Geological Survey
FID
Internal feature number.
ESRI
Sequential unique whole numbers that are automatically generated.
Shape
Feature geometry.
ESRI
Coordinates defining the features.
LENGTH
length of line segment in UTM, Zone 19N, WGS84, meters
U.S. Geological Survey
27.28
4420.247
meters
LINE
Line and file number for corresponding sidescan-sonar files. This information is used during data acquisition, processing and archival. Format: L1F2, where L = Line; 1 = Line number; F= File; 2 = File number.
U.S. Geological Survey
String up to 16 characters
System
Sonar device used to collect sidescan-sonar data
U.S. Geological Survey
String up to 50 characters
Frequecy
Frequency of the sonar system used to acquire the data. Frequency is listed in kilohertz (kHz).
U.S. Geological Survey
String up to 50 characters
Swath
Swath width used during acquisition of the sidescan-sonar data (meters).
U.S. Geological Survey
String up to 50 characters
Cruise_ID
Unique USGS field activity identification number in the format YYYY-NNN-FA where YYYY is the field activity year, NNN represents the number assigned to the field activity within that year, and FA stands for field activity.
U.S. Geological Survey
String up to 50 characters
Acq_date
Date of data acquisition. Format MM/DD/YYYY.
U.S. Geological Survey
String up to 50 characters
Jday
Julian Day during which sonar data were collected
U.S. Geological Survey
207
Julian day is the integer number representing the interval of time in days since January 1 of the year of collection.
U.S. Geological Survey
Jane F. Denny
U.S. Geological Survey
Geologist
mailing and physical address
384 Woods Hole Road
Woods Hole
Massachusetts
02543
USA
508-548-8700 x2311
508-457-2310
jdenny@usgs.gov
The file 2005-004-FA_sonartrk.zip contains the shapefile 2005-004-FA_sonartrk.shp and other files associated with the shapefile. In addition to the shapefile, the zip file also contains the data in CSV format (2005-004-FA_sonartrk.csv), the browse graphic (2005-004-FA_sonartrk.jpg) and the FGDC CSDGM metadata in the following formats: XML, HTML, FAQ and text.
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.
SHP
ArcGIS 9.0
Esri Polyline Shapefile
Trackline navigation for Klein 3000 sidescan-sonar data collected by the U.S. Geological Survey in Moultonborough Bay, Lake Winnipesaukee, New Hampshire. This also includes associated metadata and *.csv containing xy coordinates (geographic WGS 84).
Use WinZip, 7zip, Peazip or pkUnzip
0.05
https://cmgds.marine.usgs.gov/data/field-activity-data/2005-004-FA/data/backscatter/2005-004-FA_sonartrk.zip
https://cmgds.marine.usgs.gov/data/field-activity-data/2005-004-FA/
https://doi.org/10.5066/F71N7Z4H
Data can be downloaded via the Internet
CSV
1.0
CSV (comma separated value) ASCII Format
Trackline navigation for Klein 3000 sidescan-sonar data collected by the U.S. Geological Survey in Moultonborough Bay, Lake Winnipesaukee, New Hampshire. This also includes associated metadata and *.csv containing xy coordinates (geographic WGS 84).
Use WinZip, 7zip, Peazip or pkUnzip
0.05
https://cmgds.marine.usgs.gov/data/field-activity-data/2005-004-FA/data/backscatter/2005-004-FA_sonartrk.zip
https://cmgds.marine.usgs.gov/data/field-activity-data/2005-004-FA/
https://doi.org/10.5066/F71N7Z4H
Data can be downloaded via the Internet
none
This zip file contains data available in Esri shapefile format. The zip file also contains associated metadata. The user must have ArcGIS or ArcView 3.0 or greater software to read and process the data file. In lieu of ArcView or ArcGIS, the user may utilize another GIS application package capable of importing the data. A free data viewer, ArcGIS Explorer, capable of displaying the data is available from Esri at www.esri.com.
20200908
Jane F. Denny
U.S. Geological Survey
Geologist
mailing and physical address
384 Woods Hole Road
Woods Hole
Massachusetts
02543
USA
508-548-8700 x2311
508-457-2310
jdenny@usgs.gov
FGDC Content Standards for Digital Geospatial Metadata
FGDC-STD-001-1998
local time