Identification_Information: Citation: Citation_Information: Originator: U.S. Geological Survey Publication_Date: 2014 Title: Survey tracklines of chirp subbottom data collected by the U.S. Geological Survey in Moultonborough Bay, Lake Winnipesaukee, New Hampshire in 2005 (Geographic, WGS 84, Esri polyline shapefile, CHIRP_TRK.SHP) Edition: 1.0 Geospatial_Data_Presentation_Form: vector digital data Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/F71N7Z4H Publication_Information: Publication_Place: Woods Hole Coastal and Marine Science Center, Woods Hole, Massachusetts Publisher: U.S. Geological Survey, Coastal and Marine Geology Program Online_Linkage: https://doi.org/10.5066/F71N7Z4H Online_Linkage: https://cmgds.marine.usgs.gov/data/field-activity-data/2005-004-FA/ Online_Linkage: https://cmgds.marine.usgs.gov/data/field-activity-data/2005-004-FA/data/seismics/2005-004-FA_chirptrk.zip Larger_Work_Citation: Citation_Information: Originator: Denny, J.F. Originator: Danforth, W.W. Originator: Worley, C.R. Originator: Irwin, B.J. Publication_Date: 2014 Title: High-resolution geophysical and sample data collected in Moultonborough Bay, Lake Winnipesaukee, New Hampshire in 2005, USGS Field Activity 2005-004-FA Edition: 1.0 Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/F71N7Z4H Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.5066/F71N7Z4H Description: Abstract: 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. Purpose: This shapefile contains approximately 37 kilometers of seismic trackline data collected with an Edgetech SB-424 chirp subbottom profiler 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 seismic trackline data are used in conjunction with the unique shot point navigation to aid interpretation and correlate features visible within the seismic record with features within the sidescan-sonar and bathymetric data (i.e. surficial sediment distribution and topography). Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 20050726 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -71.390529 East_Bounding_Coordinate: -71.361101 North_Bounding_Coordinate: 43.728549 South_Bounding_Coordinate: 43.710921 Keywords: Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: U.S. Geological Survey Theme_Keyword: USGS Theme_Keyword: Coastal and Marine Geology Program Theme_Keyword: CMGP Theme_Keyword: Woods Hole Coastal and Marine Science Center Theme_Keyword: WHCMSC Theme_Keyword: Marine Geology Theme_Keyword: field activity number 2005-004-FA Theme_Keyword: USGS CMGP InfoBank ID R-1-05-NH Theme_Keyword: field activity number 05004 Theme_Keyword: subbottom profiler Theme_Keyword: seismic Theme_Keyword: chirp Theme_Keyword: Edgetech SB-424 subbottom profiler Theme_Keyword: polyline shapefile Theme_Keyword: tracklines Theme_Keyword: survey line Theme_Keyword: R/V Rafael Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: inlandWaters Theme_Keyword: location Place: Place_Keyword_Thesaurus: None Place_Keyword: North America Place_Keyword: United States Place_Keyword: New Hampshire Place_Keyword: Lake Winnipesaukee Place_Keyword: Moultonborough Bay Access_Constraints: None. Use_Constraints: 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. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Jane F. Denny Contact_Organization: U.S. Geological Survey Contact_Position: Geologist Contact_Address: Address_Type: mailing and physical address Address: 384 Woods Hole Road City: Woods Hole State_or_Province: Massachusetts Postal_Code: 02543 Country: USA Contact_Voice_Telephone: 508-548-8700 x 2311 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: jdenny@usgs.gov Browse_Graphic: Browse_Graphic_File_Name: https://cmgds.marine.usgs.gov/data/field-activity-data/2005-004-FA/data/seismics/2005-004-FA_chirptrk.jpg Browse_Graphic_File_Description: Image showing survey tracklines of chirp subbottom data collected by the U.S. Geological Survey in Moultonborough Bay, Lake Winnipesaukee, New Hampshire, 2005 Browse_Graphic_File_Type: JPEG Native_Data_Set_Environment: Microsoft Windows Vista Version 6.1 (Build 7601) Service Pack 1; ESRI ArcCatalog 9.3.1.4095 Cross_Reference: Citation_Information: Originator: Denise M. Argue Originator: Richard G. Kiah Originator: Jane F. Denny Originator: Jeffrey R. Deacon Originator: William W. Danforth Originator: Craig M. Johnston Originator: Amy P. Smagula Publication_Date: 2007 Title: Relation of Lake-Floor Characteristics to the Distribution of Variable Leaf Water-Milfoil in Moultonborough Bay, Lake Winnipesaukee, New Hampshire, 2005 Edition: 1.0 Geospatial_Data_Presentation_Form: document Series_Information: Series_Name: Scientific Investigations Report Issue_Identification: 2007-5125 Publication_Information: Publication_Place: Reston, Virginia Publisher: U.S. Geological Survey Online_Linkage: https://pubs.usgs.gov/sir/2007/5125/ Cross_Reference: Citation_Information: Originator: John Stockwell Publication_Date: 2005 Title: Seismic Un*x Geospatial_Data_Presentation_Form: document Publication_Information: Publication_Place: Golden, Colorado, USA Publisher: Center for Wave Phenomena - Colorado School of Mines Online_Linkage: http://www.cwp.mines.edu/cwpcodes/index.html Cross_Reference: Citation_Information: Originator: Barry, K.M. Originator: Cavers, D.A. Originator: Kneale, C.W. Publication_Date: 1975 Title: Report on recommended standards for digital tape formats Geospatial_Data_Presentation_Form: document Series_Information: Series_Name: Geophysics Issue_Identification: v. 40, no. 02, p. 344-352. Publication_Information: Publication_Place: Houston, Texas Publisher: Society of Exploration Geophysicists (SEG) Online_Linkage: http://www.seg.org/documents/10161/77915/seg_y_rev0.pdf Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: All attributes were evaluated during processing as standard quality control to ensure attributes contain accurate and relevant information and values. Logical_Consistency_Report: All subbottom data were collected during USGS cruise 2005-004-FA using an Edgetech SB-424 chirp subbottom profiler. Seismic trackline navigation was generated from unique shot navigation for the seismic system. The unique shot navigation data were evaluated during processing for spurious points; all spurious points were removed prior to generating the trackline navigation. Completeness_Report: This shapefile contains lines 43 - 81, 84 - 112 of chirp subbottom data collected on JD 207(07/26/2005) during USGS field activity 2005-004-FA. Lines 43 - 81, 84 - 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. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: 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 to Triton-Elics Delph seismic acquisition software, where Chirp sub-bottom data were recorded in Society of Exploration Geophysicists Y (SEG-Y) format (Barry and others, 1975) with DGPS logged to the SEG-Y trace headers. The Edgetech SB-424 chirp subbottom profiler was towed near the surface, close to the R/V Rafael. The instrument was secured in this position throughout the survey. Due to this tow configuration, any layback was minimal. The overall horizontal accuracy, given even a small (~ 1 meter) offset between the WAAS antenna and the tow-body, is + or - 5 meters. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: U.S. Geological Survey Publication_Date: Unpublished Material Title: Raw Chirp Subbottom Data Type_of_Source_Media: online Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 20050726 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: none Source_Contribution: Chirp subbottom data were acquired with an Edgetech SB-424 chirp subbottom profiler. The SB-424 was deployed off the port side of the USGS R/V Rafael and towed close to the lake surface. Approximately 37 km of chirp subbottom data were collected. Data were recorded at a 75-millisecond (ms) record length (1875 samples, 40 microsecond sample interval) and a 4-24 kHz sweep and were logged using Triton-Elics Delph seismic acquisition software (version 2005) in Society of Exploration Geophysicists Y (SEG-Y) format (Barry and others, 1975) with WAAS navigation logged to the SEG-Y file trace headers. Navigation in the SEG-Y header was stored as seconds of arc. The raw chirp SEG-Y contained 3 channels: raw, match-filtered, and envelope detected. The envelope detected channel was used for data processing. Process_Step: Process_Description: A C-shell script was executed using Sioseis (v. 2011.2.7) to read the raw SEG-Y file and write out a new SEG-Y file with the shots renumbered starting at 1. A second C-shell script was executed using Seismic Unix (version 4.1) to read the renumbered SEG-Y files, write a Seismic Unix format file (*.su), and extract SEG-Y trace header information, which included shot number, source x (arc seconds), source y (arc seconds), year, Julian Day, hour, minute, second (UTC). Geographic coordinates (stored in arc seconds WGS 84) were converted to eastings and northings, UTM, Zone 19N, meters using proj (v. 4.7.1). Before saving the header information to a text file, the data were filtered using AWK (no version) to save only unique shot point locations. The unique shot navigation for each seismic line were then concatenated into a comma delimited (.csv) text file. The header records for the first several shots contained no navigation information, therefore the 'first' shot of the line is considered the first shot with usable data stored in the header. This was generally within the first 10 shots for the majority of lines. (Stockwell, 2005) Jane F. Denny performed this and all subsequent process steps. Process_Date: 2013 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Jane F. Denny Contact_Organization: U.S. Geological Survey Contact_Position: Geologist Contact_Address: Address_Type: mailing and physical address Address: 384 Woods Hole Road City: Woods Hole State_or_Province: Massachusetts Postal_Code: 02543 Country: USA Contact_Voice_Telephone: 508-548-8700 x2311 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: jdenny@usgs.gov Process_Step: Process_Description: The text file (*.csv) was imported into Esri ArcMap 9.3 using ArcCatalog, Create Feature Class from XY Table, specifying UTM, Zone 19N, WGS 84 coordinate system. XTools Pro (v. 7.1.0), Feature Conversion, Make one polyline from points, was used to generate a polyline shapefile from the unique shot point shapefile. The 'line' field was used as the 'ID Field' to use the unique shot points from each line to generate a unique polyline for each seismic line collected during the USGS field activity 2005-004-FA. 'Use input features order' was also specified. The polyline shapefile was then reprojected to Geographic Coordinate System, WGS 84 (GCS_WGS_1984), using ArcCatalog, Project. Process_Date: 2013 Process_Step: Process_Description: Cruise, System, Acq_Date fields were added to the attribute table within ArcMap 9.3. The length of each line segment was calculated and included in a new attribute field using XTools Pro for ArcGIS desktop (version 7.1.0), specifying UTM Zone 19 N, WGS 84 - meters. Process_Date: 2013 Process_Step: Process_Description: 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. Process_Date: 20170406 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: VeeAnn A. Cross Contact_Position: Marine Geologist Contact_Address: Address_Type: Mailing and Physical Address: 384 Woods Hole Road City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Contact_Voice_Telephone: 508-548-8700 x2251 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: vatnipp@usgs.gov Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Vector Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: String Point_and_Vector_Object_Count: 69 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: 0.000001 Longitude_Resolution: 0.000001 Geographic_Coordinate_Units: Decimal degrees Geodetic_Model: Horizontal_Datum_Name: D_WGS_1984 Ellipsoid_Name: WGS_1984 Semi-major_Axis: 6378137.000000 Denominator_of_Flattening_Ratio: 298.257224 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: 2005-004-FA_chirptrk Entity_Type_Definition: Trackline navigation for chirp subbottom data collected by the U.S. Geological Survey during field activity 2005-004-FA in Moultonborough Bay, Lake Winnipesaukee, New Hampshire, 2005 Entity_Type_Definition_Source: U.S. Geological Survey Attribute: Attribute_Label: FID Attribute_Definition: Internal feature number. Attribute_Definition_Source: Esri Attribute_Domain_Values: Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated. Attribute: Attribute_Label: Shape Attribute_Definition: Feature geometry. Attribute_Definition_Source: Esri Attribute_Domain_Values: Unrepresentable_Domain: Coordinates defining the features. Attribute: Attribute_Label: Line Attribute_Definition: Line and file number for corresponding seismic files. This information is used during data acquisition, processing and archival. Format: L1F1, where L = Line; 1 = Line number; F= File; 1 = File number. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Unrepresentable_Domain: String up to 254 characters Attribute: Attribute_Label: Cruise Attribute_Definition: 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. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Unrepresentable_Domain: String up to 50 characters Attribute: Attribute_Label: System Attribute_Definition: Chirp subbottom profiling system used to acquire seismic data during USGS field activity 2005-004-FA. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Unrepresentable_Domain: String up to 50 characters Attribute: Attribute_Label: Acq_Date Attribute_Definition: Date of data acquisition. Format MM/DD/YYYY. Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Unrepresentable_Domain: String up to 50 characters Attribute: Attribute_Label: Length Attribute_Definition: Length of each polyline (meters). Generated from ArcGIS 9.3 Xtools pro (v. 7.1.0) using UTM Zone 19N, WGS 84, meters projection Attribute_Definition_Source: U.S. Geological Survey Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 44.2 Range_Domain_Maximum: 4136.6 Attribute_Units_of_Measure: meters Distribution_Information: Distributor: Contact_Information: Contact_Person_Primary: Contact_Person: Jane F. Denny Contact_Organization: U.S. Geological Survey Contact_Position: Geologist Contact_Address: Address_Type: mailing and physical address Address: 384 Woods Hole Road City: Woods Hole State_or_Province: Massachusetts Postal_Code: 02543 Country: USA Contact_Voice_Telephone: 508-548-8700 x2311 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: jdenny@usgs.gov Resource_Description: The file 2005-004-FA_chirptrk.zip contains the shapefile 2005-004-FA_chirptrk.shp and other files associated with the shapefile. In addition to the shapefile, the zip file also contains the browse graphic (2005-004-FA_chirptrk.jpg) and the FGDC CSDGM metadata in the following formats: XML, HTML, FAQ and text. Distribution_Liability: 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. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: Shapefile Format_Version_Number: ArcGIS 9.0 Format_Specification: Esri polyline shapefile Format_Information_Content: Zip file containing the chirp subbottom profiler trackline data from the Moultonborough Bay, Lake Winnipesaukee, New Hampshire survey area. This also includes associated metadata. File_Decompression_Technique: Use WinZip, 7zip, Peazip or pkUnzip Transfer_Size: 0.2 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://cmgds.marine.usgs.gov/data/field-activity-data/2005-004-FA/data/seismics/2005-004-FA_chirptrk.zip Network_Resource_Name: https://cmgds.marine.usgs.gov/data/field-activity-data/2005-004-FA/ Network_Resource_Name: https://doi.org/10.5066/F71N7Z4H Access_Instructions: Data can be downloaded via the Internet Fees: none Technical_Prerequisites: 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. Metadata_Reference_Information: Metadata_Date: 20170406 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Jane F. Denny Contact_Organization: U.S. Geological Survey Contact_Position: Geologist Contact_Address: Address_Type: mailing and physical address Address: 384 Woods Hole Road City: Woods Hole State_or_Province: Massachusetts Postal_Code: 02543 Country: USA Contact_Voice_Telephone: 508-548-8700 x2311 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: jdenny@usgs.gov Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Time_Convention: local time