U.S. Geological Survey
2014
Sound velocity profile locations collected by the U.S. Geological Survey in Moultonborough Bay, Lake Winnipesaukee, New Hampshire in 2005 (Geographic, WGS 84, Esri point shapefile, 2005-004-FA_SVP.SHP)
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/bathymetry/2005-004-FA_svp.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 shapefile contains 8 sound velocity profile locations collected with an Applied Acoustics SV Plus velocimeter by the U.S. Geological Survey during USGS survey 2005-04-FA. These data were collected in Moultonborough Bay, Lake Winnipesaukee, New Hampshire as part of a collaborative USGS and New Hampshire Department of Environmental Services research program to assess the distribution of variable leaf water-milfoil. The information contained within the sound velocity profiles is needed to adequately account for refraction artifacts that may be present within raw swath bathymetric data.
20050725
20050726
ground condition
None planned
-71.388260
-71.350192
43.724794
43.702508
USGS Metadata Identifier
USGS:aa99b8c9-61b9-4779-a0de-f02b80e300da
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
field activity number 05004
sound velocity profiles
Applied Acoustics SV Plus velocimeter
swath bathymetry
point shapefile
location
R/V Rafael
ISO 19115 Topic Category
inlandWaters
location
geoscientificInformation
USGS Thesaurus
sound velocity
navigational data
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 originator of the dataset.
Jane F. Denny
U.S. Geological Survey
Geologist
mailing and physical address
384 Woods Hole Road
Woods Hole
Massachusetts
02543
USA
508-548-8700 x 2311
508-457-2310
jdenny@usgs.gov
https://cmgds.marine.usgs.gov/data/field-activity-data/2005-004-FA/data/bathymetry/2005-004-FA_svp.jpg
Image showing location of sound velocity profiles collected in 2005 by the U.S. Geological Survey 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/
All attributes were checked in a consistent manner.
All sound velocity profiles were collected during USGS cruise 2005-004-FA using an Applied Acoustics SV Plus velocimeter. Quality control was conducted during processing of the data. Any spurious data or artifacts were removed or minimized.
Cast 1 was collected outside of Moultonborough Bay and corresponds to the location of the patch test used to calibrate the interferometric sonar.
This shapefile contains eight sound velocity profiles collected on JD 206 (07/25/2005) and JD 207 (07/26/2005) during USGS field activity 2005-004-FA. Sound velocity profiles 1 - 3 were collected on JD206. Sound velocity profiles 4 - 8 were collected on JD207 and were used to correct refraction artifacts in swath bathymetric data used to generate the bathymetric grid of the survey area (collected on JD207 (lines 43 - 112).
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).
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 Communications Systems International (CSI), Inc. LGBX Pro receiver. The CSI LGBX Pro received positions from a WAAS antenna located on the port, aft roof of the R/V Rafael cabin. WAAS positions were recorded within HYPACK (www.hypack.com) navigation software. During each deployment of the sound velocity profiler, positions were recorded in the survey log book by reading the position off the HYPACK navigation display.
U.S. Geological Survey
Unpublished Material
Sound Velocity Profiles
online
20050725
20050726
ground condition
none
Sound velocity profiles are acquired in order to measure the speed of sound in the water column during survey operations. This information is used to correct any refraction artifacts that may be present within the swath bathymetric data due to unaccounted for changes in the speed of sound throughout the water column. As such, the swath bathymetric acquisition is described here, as well as acquisition procedures for the sound velocity profiles.
Swath-bathymetric and acoustic-backscatter data were acquired with a SEA, Ltd., Submetrix 2000 Series interferometric sonar operating at a 234-kHz frequency. The SEA Submetrix 2000 Series transducers were mounted at the bow of the USGS R/V Rafael. Approximately 37 km of swath bathymetric data were collected.
SEA RTS2000 acquisition software (version year 2005) was used to digitally log the bathymetric data at a maximum 50 meter range (100 meter swath width) and 2048 samples per ping in the SEA SXR format. In shallow water areas, the swath width did not achieve the full 50-meter range, but varied from roughly 5x water depth to the maximum 50-meter range (i.e. swath width varied from approximately 15 meter to 100 meters depending on water depth). Data collection parameters are saved as a RTS2000 session file in SEA SXS format.
An Octopus F180R Attitude and Positioning system (see: http://www.codaoctopus.com/motion/f180/index.asp) recorded ship motion (heave, pitch, roll, and yaw). These data were transmitted via network connection to the RTS2000 data acquisition software. The Octopus F180R Inertial Measurement Unit (IMU) was mounted directly above the SEA Submetrix 2000 Series transducers, to minimize lever arm offsets that can lead to positioning errors. The F180R uses two L1 antennas for position and heading accuracy. The antennas are mounted on a rigid horizontal pole, 3 meters above the F180R IMU, with a horizontal separation of 1 meter and are offset from the IMU in a forward/aft configuration. The forward offset of the primary antenna from the IMU is 0.5 meters, with no port/starboard offset.
Eight sound-velocity profiles were acquired during survey operations at roughly 1 to 3 hour intervals using an Applied Microsystems SV Plus Velocimeter (Applied Microsystems, 2008).
Vertical accuracy of the raw data based on system specifications may approximate 1% of water depth, 0.01 to 0.15 meters within the survey area. However, overall vertical accuracies on the order of 0.5 meters are assumed based on the following considerations: WAAS navigation vertical accuracies; the Coda Octopus F180 Attitude and Positioning system, used to correct for vessel roll, pitch, heave, and yaw, has a theoretical vertical accuracy of a few mm; refraction artifacts were minimized by acquiring a range of sound velocity profiles with a hand-casted Applied MicroSystems SV Plus sound velocimeter during the survey. Changes in ship draft due to water and fuel usage were not considered.
Eight sound velocity casts were collected at roughly 3 hour intervals during USGS field activity 2005-004-FA using an Applied Microsystems SV Plus velocimeter (see http://www.appliedmicrosystems.com/).
At each station, the SV Plus was hand deployed and slowly lowered to the lakefloor. The SV Plus was monitored by a member of the science party and as the instrument made contact with the lakefloor, the position (i.e. location) was recorded in the lab using HYPACK navigation software. The position was then manually recorded within the cruise log and RTS2000 acquisition software. Upon recovery, the SV Plus was connected to an onboard computer via serial port in order to download data using the SV Plus communications software, SmartTalk.
Software: SV Plus v2 SmartTalk (no version)
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
The data were then exported in comma-delimited text format and opened within Microsoft Excel. The files were saved in Microsoft Excel format (*.xls). Graphs of the sound velocity profile (Depth vs. speed of sound) at each station were created within Microsoft Excel and saved within the spreadsheet and as PDF files. The files were then opened using Adobe Photoshop CS3 and exported as JPG images.
2005
The location of each of the eight sound velocity profiles was stored in eastings and northings (UTM, Zone 19N, meters, WGS84) in a comma-separated value file (*.csv). This file was reformatted using an GNU awk script and cast number, time and date were added.
Proj (version 4.6.1) was used to convert the Eastings and Northings to Latitude and Longitude. GNU awk and paste were used to merge the proj output with the original comma-separated value file (*csv), creating a new csv file containing Latitude, Longitude, Cast number, Hour, Minute, and Julian Day.
Software: GNU awk 3.1.5
2005
The text 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 following fields were added to the attribute table: Cruise_ID, System, Acq_Date and a hyperlink field listing the filename of the JPEG image of the graph of each sound velocity profile.
2005
The table was 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
Point
Entity point
8
0.000001
0.000001
Decimal degrees
D_WGS_1984
WGS_1984
6378137.000000
298.257224
2005-004-FA_svp
Sound velocity profile locations collected by the U.S. Geological Survey in Moultonborough Bay, Lake Winnipesaukee, New Hampshire, 2005.
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.
Longitude
X coordinate of sound velocity profile location in decimal degrees (Geographic, WGS 84)
U.S. Geological Survey
-71.38826
-71.350192
decimal degrees
Latitude
Y coordinate of sound velocity profile locations in decimal degrees (Geographic, WGS 84)
U.S. Geological Survey
43.702508
43.724794
decimal degrees
cast
Sound velocity profile location number, listed as CastX, where X is the location identifier. For example, cast1 is sound velocity profile cast # 1.
U.S. Geological Survey
String up to 254 characters
hr
Time of the sound velocity profile cast in Hours of 24 hour day, UTC.
U.S. Geological Survey
13
19
hours of 24-hour day
min
Time of sound velocity profile cast listed in Minutes, UTC.
U.S. Geological Survey
0
58
minutes (0 - 60)
jd
Julian Day during which sonar data were collected (2005)
U.S. Geological Survey
206
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
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
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
System
System used to collect the sound velocity profiles
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 20 characters
Hyperlink
Field listing the filename of the JPEG image of a graph of the sound velocity profile for each location (1-8 locations)
U.S. Geological Survey
String up to 50 characters
The CSV (comma separated value) files associated with this shapefile are raw field data. That is, these files were generated directly from the Applied Acoustics SV Plus velocimeter. These data were used to generate the graphs, available in JPEG format, showing the speed of sound in the water column for each sound velocity profile location. These graphs are bundled in the associated zip file (2005-004-FA_svp.zip) and filenames are stored in the hyperlink field within the shapefile (2005-004-FA_svp.shp).
The format of the CSV files is as follows:
Headings:
Cast#, where # is the sound velocity profile location (1 - 8 for 2005-004-FA field activity)
System Description, where system is SVPlus 3770 for 2005-004-FA field activity
Fields:
Time (M/DD/YYYY HR:MIN)
Pressure (depth in meters)
Temperature (Celsius)
Sound Velocity (meters per second)
Battery (volts)
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_svp.zip contains the shapefile 2005-004-FA_svp.shp and the other files associated with a shapefile. In addition to the shapefile, the locations of the sound velocity profiles are in CSV format (2005-004-FA_svp.csv). The profile data are available in JPEG and CSV format. The zip file also contains the browse graphic (2005-004-FA_svp.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.
Shapefile
ArcGIS 9.0
Esri point shapefile
Zip file containing the sound velocity profile locations in Esri shapefile format, JPEG images of graphs of the sound velocity profiles, and CSV text files of the sound velocity profiles collected from the Moultonborough Bay, Lake Winnipesaukee, New Hampshire survey area. This zip file also includes associated metadata and a *.csv containing xy coordinates (geographic, WGS 84).
Use WinZip, 7zip, Peazip or pkUnzip
1
http://cmgds.marine.usgs.gov/data/field-activity-data/2005-004-FA/data/bathymetry/2005-004-FA_svp.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
JPEG
1.0
JPEG Image Format
Zip file containing the sound velocity profile locations in Esri shapefile format, JPEG images of graphs of the sound velocity profiles, and CSV text files of the sound velocity profiles collected from the Moultonborough Bay, Lake Winnipesaukee, New Hampshire survey area. This zip file also includes associated metadata and a *.csv containing xy coordinates (geographic, WGS 84).
Use WinZip, 7zip, Peazip or pkUnzip
1
http://cmgds.marine.usgs.gov/data/field-activity-data/2005-004-FA/data/bathymetry/2005-004-FA_svp.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
Zip file containing the sound velocity profile locations in Esri shapefile format, JPEG images of graphs of the sound velocity profiles, and CSV text files of the sound velocity profiles collected from the Moultonborough Bay, Lake Winnipesaukee, New Hampshire survey area. This zip file also includes associated metadata and a *.csv containing xy coordinates (geographic, WGS 84).
Use WinZip, 7zip, Peazip or pkUnzip
1
http://cmgds.marine.usgs.gov/data/field-activity-data/2005-004-FA/data/bathymetry/2005-004-FA_svp.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 point 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.
20240318
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
whsc_data_contact@usgs.gov
The metadata contact email address is a generic address in the event the person is no longer with USGS. (updated on 20240318)
FGDC Content Standards for Digital Geospatial Metadata
FGDC-STD-001-1998
local time