Sound velocity profiles (SVPs) in CSV format and PNG image format collected by the U.S. Geological Survey in the nearshore surrounding the Elizabeth Islands, MA

Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Entity_and_Attribute_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: U.S. Geological Survey

Publication_Date: 2012

Title:

Sound velocity profiles (SVPs) in CSV format and PNG image format collected by the U.S. Geological Survey in the nearshore surrounding the Elizabeth Islands, MA

Edition: 1.0

Geospatial_Data_Presentation_Form: vector digital data

Series_Information:

Series_Name: Open-File Report

Issue_Identification: 2011-1184

Publication_Information:

Publication_Place: Woods Hole Coastal and Marine Science Center, Woods Hole, MA

Publisher: U.S. Geological Survey, Coastal and Marine Geology Program

Online_Linkage:

<https://pubs.usgs.gov/of/2011/1184/GIS_catalog/svps/2010-003-FA_svp_profiles.zip>

Larger_Work_Citation:

Citation_Information:

Originator: Elizabeth A. Pendleton

Originator: David C. Twichell

Originator: David S. Foster

Originator: Charles R. Worley

Originator: Barry J. Irwin

Originator: William W. Danforth

Publication_Date: 2012

Title:

High-Resolution Geophysical Data From the Sea Floor Surrounding the Western Elizabeth Islands, Massachusetts

Edition: 1.0

Series_Information:

Series_Name: Open-File Report

Issue_Identification: 2011-1184

Publication_Information:

Publication_Place: Woods Hole Coastal and Marine Science Center, Woods Hole, MA

Publisher: U.S. Geological Survey, Coastal and Marine Geology Program

Online_Linkage: <https://pubs.usgs.gov/of/2011/1184/>

Description:

Abstract:

These data were collected under a cooperative agreement between the Massachusetts Office of Coastal Zone Management (CZM) and the U.S. Geological Survey (USGS), Coastal and Marine Geology Program, Woods Hole Coastal and Marine Science Center (WHCMSC). Initiated in 2003, the primary objective of this program is to develop regional geologic framework information for the management of coastal and marine resources. Accurate data and maps of seafloor geology are important first steps toward protecting fish habitat, delineating marine resources, and assessing environmental changes due to natural or human impacts. The project is focused on the inshore waters of coastal Massachusetts, primarily in water depths of 2-30 meters. Data collected for the mapping cooperative have been released in a series of USGS Open-File Reports (<http://woodshole.er.usgs.gov/project-pages/coastal_mass/html/current_map.html>). The data collected in this study area located around the western extent of the Elizabeth Islands includes high resolution bathymetry, acoustic-backscatter intensity, seismic-reflection, and navigation data. These data were collected during a nearshore cruise in September 2010 onboard the R/V Rafael using the following equipment: an SEA Ltd SwathPlus interferometric sonar (234 kHz), Klein 3000 dual frequency sidescan sonar, an Edgetech 424 chirp subbottom profiling system, and 4 GPS antennae. More information about the cruise conducted as part of the project: Geologic Mapping of the Seafloor Offshore of Massachusetts can be found on the Woods Hole Coastal and Marine Science Center Field Activity webpage: <http://quashnet.er.usgs.gov/data/2010/10003/>

Purpose:

This dataset is used to show the sound velocity profiles collected during USGS Cruise 2010-003-FA within the nearshore surrounding the Elizabeth Islands, MA. 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. This dataset contains hyperlinks to graphs of the sound velocity profile at each station location, as well as location in easting and northing (UTM, Zone 19N, WGS84, meters), time of day and date.

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20100910

Ending_Date: 20100916

Currentness_Reference: Data were not collected on 20100915 due to weather conditions.

Status:

Progress: Complete

Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -70.978214

East_Bounding_Coordinate: -70.850051

North_Bounding_Coordinate: 41.459365

South_Bounding_Coordinate: 41.395991

Keywords:

Theme:

Theme_Keyword_Thesaurus: General

Theme_Keyword: U.S. Geological Survey

Theme_Keyword: USGS

Theme_Keyword: Woods Hole Coastal and Marine Science Center

Theme_Keyword: WHCMSC

Theme_Keyword: Coastal and Marine Geology Program

Theme_Keyword: CMGP

Theme_Keyword: SVP

Theme_Keyword: Applied Acoustics SV plus v2

Theme_Keyword: sound velocity profile

Theme_Keyword: PNG image format

Theme_Keyword: WHCMSC field activity serial number 2010-003-FA

Theme_Keyword: R/V Rafael

Theme_Keyword: CSV format

Theme_Keyword: Info Bank ID R-3-10-BZ

Theme:

Theme_Keyword_Thesaurus: ISO 19115 Topic Category

Theme_Keyword: oceans and coastal

Theme_Keyword: oceans and estuaries

Theme_Keyword: oceans

Theme_Keyword: environment

Place:

Place_Keyword_Thesaurus: General

Place_Keyword: North America

Place_Keyword: Atlantic Ocean

Place_Keyword: Massachusetts

Place_Keyword: Cuttyhunk Island

Place_Keyword: Nashawena Island

Place_Keyword: Elizabeth Islands

Place_Keyword: Buzzards Bay

Place_Keyword: Vineyard Sound

Place_Keyword: Quicks Hole

Place_Keyword: Cuttyhunk Harbor

Place_Keyword: Sow and Pigs Reef

Place_Keyword: Penikese Island

Place_Keyword: Gull Island

Place_Keyword: United States

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: David C. Twichell

Contact_Organization: U.S. Geological Survey

Contact_Position: Oceanographer

Contact_Address:

Address_Type: mailing and physical address

Address: 384 Woods Hole Road

City: Woods Hole

State_or_Province: MA

Postal_Code: 02543-1598

Country: USA

Contact_Voice_Telephone: 508-548-8700 x2266

Contact_Facsimile_Telephone: 508-457-2310

Contact_Electronic_Mail_Address: dtwichell@usgs.gov

Browse_Graphic:

Browse_Graphic_File_Name: <https://pubs.usgs.gov/of/2011/1184/GIS_catalog/svps/cast.png>

Browse_Graphic_File_Description:

Woods Hole Coastal and Marine Science Center sound velocity profiles offshore of the Elizabeth Islands, MA

Browse_Graphic_File_Type: PNG

Native_Data_Set_Environment:

Microsoft Windows 7 Enterprise Service Pack 1; ArcGIS Desktop 9.3 Service Pack 1; Build 1850

Data_Quality_Information:

Logical_Consistency_Report:

All sound velocity profiles were acquired with the same instrument during cruise 2010-003-FA; an Applied Microsystems SV plus v2.

Completeness_Report:

All sound velocity profiles not associated with the patch test collected during cruise 2010-003-FA are included

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

Differential Global Positioning System (DGPS) navigation data were acquired with a Communications Systems International (CSI), Inc. LGBX Pro receiver and recorded with HYPACK (www.hypack.com). The CSI received positions from a DGPS antenna located on the port, aft roof of the R/V Rafael cabin. Ship location was used for the sound velocity deployments. The SV plus v2 sound velocity profiler was hand deployed. Once the system reached bottom, positions were read from HYPACK and stored. DGPS accuracy is 1 to 3 meters, depending on the distance from a US Coast Guard coastal repeater station. However, offsets from the location of hand-deployment and the DGPS antenna were not measured, and the ship is allowed to drift during deployment which can last several minutes depending on water depth. The horizontal accuracy of the sound velocity locations is considered to be +/- 50 meters.

Vertical_Positional_Accuracy:

Vertical_Positional_Accuracy_Report:

Water depth of the sound velocity profiles was extracted from the recorded sound velocity profile after recovery. Depth (as pressure in dbars) is recorded as the sound velocity profiler is lowered through the water column and downloaded after the instrument is recovered. Data are stored in ASCII text files.

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Originator: U.S. Geological Survey

Type_of_Source_Media: disc

Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20100910

Ending_Date: 20100916

Source_Currentness_Reference: Data were not collected on 20100915 due to weather conditions.

Source_Contribution:

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 help 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. For information on collection of swath bathymetric data see the swath trackline file metadata (2010-003-FA_Swath_tracklines.shp) or a bathymetric grid metafile (ei_2hm_nofill) report.

Process_Step:

Process_Description:

Profiles were collected at least once during each survey day, and multiple times per day when the data suggested significant stratification within the water column. Fourteen sound velocity casts were collected in total during USGS Cruise 2010-003-FA using an Applied Microsystems SV Plus v2 instrument (see <http://www.appliedmicrosystems.com/products/productDetails.aspx?id=1> for details).

At each station, the SV plus 2 was hand deployed and slowly lowered to the seafloor. The SV plus v2 was monitored by a member of the science party and as the instrument made contact with the seafloor, 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 SWATHplus 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 v2 communications software, SmartTalk.

Process_Date: 201009

Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Elizabeth A. Pendleton

Contact_Organization: U.S. Geological Survey

Contact_Position: Geologist

Contact_Address:

Address_Type: mailing and physical address

Address: 384 Woods Hole Rd.

City: Woods Hole

State_or_Province: MA

Postal_Code: 02543-1598

Contact_Voice_Telephone: (508) 548-8700x2259

Contact_Facsimile_Telephone: (508) 457-2310

Contact_Electronic_Mail_Address: ependleton@usgs.gov

Process_Step:

Process_Description:

The data were then exported in comma-delimited text format and imported to MATLAB (version R2011a). Graphs of the sound velocity profile (Pressure vs. speed of sound) at each station were created within MATLAB and exported as *.png files

Process_Date: 201009

Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Elizabeth A. Pendleton

Contact_Organization: U.S. Geological Survey

Contact_Position: Geologist

Contact_Address:

Address_Type: mailing and physical address

Address: 384 Woods Hole Rd.

City: Woods Hole

State_or_Province: MA

Postal_Code: 02543-1598

Contact_Voice_Telephone: (508) 548-8700x2259

Contact_Facsimile_Telephone: (508) 457-2310

Contact_Electronic_Mail_Address: ependleton@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: Entity point

Point_and_Vector_Object_Count: 14

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Geodetic_Model:

Vertical_Coordinate_System_Definition:

Depth_System_Definition:

Depth_Datum_Name: Local surface

Depth_Resolution: 0.5

Depth_Distance_Units: meters

Depth_Encoding_Method: Attribute values

Entity_and_Attribute_Information:

Overview_Description:

Entity_and_Attribute_Overview:

Although these PNG images and CSV format data files do not have coordinates associated with the data themselves, they are related to the SVP locations (shapefile: 2010-003-FA_SVPs_dd.shp) by the cast number in the attribute table

Distribution_Information:

Distributor:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Elizabeth A. Pendleton

Contact_Organization: U.S. Geological Survey

Contact_Position: Geologist

Contact_Address:

Address_Type: mailing and physical address

Address: 384 Woods Hole Rd.

City: Woods Hole

State_or_Province: MA

Postal_Code: 02543-1598

Contact_Voice_Telephone: (508) 548-8700x2259

Contact_Facsimile_Telephone: (508) 457-2310

Contact_Electronic_Mail_Address: ependleton@usgs.gov

Resource_Description: Downloadable Data

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: WinZip

Format_Version_Number: 14.5

Format_Information_Content:

WinZip file contains sound velocity profiles collected by the U.S. Geological Survey - Woods Hole Coastal and Marine Science Center offshore of the Elizabeth Islands, MA. It contains comma-separated text files of each sound velocity cast and a png image of the profile plotted as depth versus veolcity.

File_Decompression_Technique: use WinZip or pkUnzip

Transfer_Size: 114 KB

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

<https://pubs.usgs.gov/of/2011/1184/GIS_catalog/svps/2010-003-FA_svp_profiles.zip>

Network_Resource_Name: <https://pubs.usgs.gov/of/2011/1184/html/GIS_catalog.html>

Access_Instructions: Data can be downloaded via the World Wide Web (WWW)

Offline_Option:

Offline_Media: DVD-ROM

Recording_Capacity:

Recording_Density: 4.75

Recording_Density_Units: Gbytes

Recording_Format: UDF

Fees: none

Technical_Prerequisites:

This zip file contains image data that can be viewed with any image viewing software or text data that can be viewed with any text editor.

Metadata_Reference_Information:

Metadata_Date: 20111118

Metadata_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Elizabeth Pendleton

Contact_Organization: U.S. Geological Survey

Contact_Position: Geologist

Contact_Address:

Address_Type: mailing and physical address

Address: 384 Woods Hole Rd.

City: Woods Hole

State_or_Province: MA

Postal_Code: 02543-1598

Contact_Voice_Telephone: (508) 548-8700x2259

Contact_Facsimile_Telephone: (508) 457-2310

Contact_Electronic_Mail_Address: ependleton@usgs.gov

Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998

Metadata_Time_Convention: local time

Metadata_Access_Constraints: None

Metadata_Use_Constraints: None

Metadata_Extensions:

Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>

Profile_Name: ESRI Metadata Profile