Sound Velocity Profiles, AML Minos X sound velocity profile data, collected during USGS field activity 2017-049-FA within Lake Powell, UT-AZ (PNG images, SVP text, and Esri point shapefile, GCS WGS 84).

Metadata also available as - [Questions & Answers] - [Parseable text] - [XML]

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: 2018
Title:

Sound Velocity Profiles, AML Minos X sound velocity profile data, collected during USGS field activity 2017-049-FA within Lake Powell, UT-AZ (PNG images, SVP text, and Esri point shapefile, GCS WGS 84).

Edition: 1.0
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:

Series_Name: data release
Issue_Identification: DOI:10.5066/P90BU2VS

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/P90BU2VS
Online_Linkage:

https://www.sciencebase.gov/catalog/item/5b97ca9ce4b0702d0e841ef3

Larger_Work_Citation:

Citation_Information:

Originator: Brian D. Andrews
Originator: Wayne E. Baldwin
Originator: Charles R. Worley
Originator: Robert L. Baskin
Originator: Jane F. Denny
Originator: David S. Foster
Originator: Barry J. Irwin
Originator: Eric M. Moore
Originator: Alex R. Nichols
Publication_Date: 2018
Title:

High-resolution geophysical data collected in Lake Powell Utah-Arizona, U.S. Geological Survey Field Activity 2017-049-FA

Edition: 1.0
Series_Information:

Series_Name: data release
Issue_Identification: DOI:10.5066/P90BU2VS

Publication_Information:

Publication_Place: Reston, VA
Publisher: U.S. Geological Survey

Other_Citation_Details:

Suggested citation: Andrews, B.D., Baldwin, W.E., Worley, C.R., Baskin, R.L., Denny, J.F., Foster, D.S., Irwin, B.J., Moore, E.M., and Nichols, A.R., 2018, High-resolution geophysical data collected in Lake Powell, Utah-Arizona, U.S. Geological Survey Field Activity 2017-049-FA: U.S. Geological Survey data release, https://doi.org/10.5066/P90BU2VS.

Online_Linkage: https://doi.org/10.5066/P90BU2VS
Online_Linkage:

https://www.sciencebase.gov/catalog/item/5b900656e4b0702d0e807395

Description:

Abstract:

High-resolution geophysical mapping of Lake Powell in the Glen Canyon National Recreation Area in Utah and Arizona was conducted between October 8 and November 15, 2017, as part of a collaborative effort between the U.S. Geological Survey and the Bureau of Reclamation to provide high-quality data needed to reassess the area-capacity tables for the Lake Powell reservoir. Seismic data collected during this survey can help to define the rates of deposition within the San Juan and Colorado Rivers, which are the main inflows to Lake Powell. These new data are intended to improve water budget management decisions that affect the natural and recreational resources of the reservoir. Multibeam echosounder bathymetry and backscatter data were collected along 2,312 kilometers of tracklines (331 square kilometers) of the lake floor to regionally define its depth and morphology, as well as the character and distribution of lake-floor sediments. Ninety-two kilometers of seismic-reflection profile data were also collected to define the thickness and structure of sediment deposits near the confluences of the San Juan and Colorado Rivers.

Purpose:

This dataset is used to display the locations of sound velocity profiles (SVP, also referred to as sound speed profiles), as well as the SVP data, collected during a 2017 USGS survey on Lake Powell in the Glen Canyon National Recreation Area of Utah and Arizona. The sound velocity profiles document water column sound speed variability during the survey, and were used during processing to account for refraction artifacts present within the multibeam bathymetric data. The dataset contains graphs of sound velocity vs. depth at each profile location, as well as a shapefile with the location in Geographic Coordinate System (GCS) WGS 84 latitude and longitude, the time of day, and date of collection.

Supplemental_Information:

Additional information on the field activity is available from https://cmgds.marine.usgs.gov/fan_info.php?fan=2017-049-FA.

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20171008
Ending_Date: 20171115

Currentness_Reference:

data were collected on the following dates: 20171008-20171022 (Julian day 281-295); 20171024-20171109 (Julian day 297-313); 20171115 (Julian day (319).

Status:

Progress: Complete
Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -111.482500
East_Bounding_Coordinate: -110.431667
North_Bounding_Coordinate: 37.835278
South_Bounding_Coordinate: 36.986667

Keywords:

Theme:

Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:5b97ca9ce4b0702d0e841ef3

Theme:

Theme_Keyword_Thesaurus: None
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: Utah Water Science Center
Theme_Keyword: UWSC
Theme_Keyword: Bureau of Reclamation
Theme_Keyword: BOR
Theme_Keyword: National Park Service
Theme_Keyword: NPS
Theme_Keyword: Department of the Interior
Theme_Keyword: DOI
Theme_Keyword: Colorado River Storage Project
Theme_Keyword: CRSP
Theme_Keyword: shapefile
Theme_Keyword: sound velocity profile
Theme_Keyword: AML Minos X
Theme_Keyword: Esri shapefile
Theme_Keyword: field activity number 2017-049-FA
Theme_Keyword: R/V Stephens
Theme_Keyword: SVP
Theme_Keyword: SSP
Theme_Keyword: sound speed profile

Theme:

Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: inlandWaters
Theme_Keyword: geoscientificInformation
Theme_Keyword: location

Theme:

Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: profiles
Theme_Keyword: sound velocity
Theme_Keyword: limnology
Theme_Keyword: navigational data
Theme_Keyword: geospatial datasets

Place:

Place_Keyword_Thesaurus: None
Place_Keyword: United States of America
Place_Keyword: State of Utah
Place_Keyword: State of Arizona
Place_Keyword: Garfield County
Place_Keyword: San Juan County
Place_Keyword: Kane County
Place_Keyword: Coconino County
Place_Keyword: Lake Powell
Place_Keyword: Glen Canyon National Recreation Area
Place_Keyword: Glen Canyon
Place_Keyword: Colorado River
Place_Keyword: Great Bend
Place_Keyword: San Juan River
Place_Keyword: Escalante River
Place_Keyword: Hite
Place_Keyword: Good Hope Bay
Place_Keyword: Bullfrog
Place_Keyword: Bullfrog Bay
Place_Keyword: Halls Crossing
Place_Keyword: Halls Bay
Place_Keyword: Rainbow Bridge National Monument
Place_Keyword: Dangling Rope
Place_Keyword: Rock Creek Bay
Place_Keyword: Friendship Bay
Place_Keyword: Last Chance Bay
Place_Keyword: Padre Bay
Place_Keyword: Gunsight Bay
Place_Keyword: Warm Creek Bay
Place_Keyword: Wahweap
Place_Keyword: Wahweap Bay
Place_Keyword: Antelope Canyon
Place_Keyword: Navajo Canyon
Place_Keyword: Page
Place_Keyword: Glen Canyon Dam

Temporal:

Temporal_Keyword_Thesaurus: none
Temporal_Keyword: 2017

Access_Constraints: none
Use_Constraints:

Public domain data from the U.S. Government are freely re-distributable 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_Organization_Primary:

Contact_Organization: U.S. Geological Survey
Contact_Person: Brian Andrews

Contact_Position: Geographer
Contact_Address:

Address_Type: mailing and physical
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: Massachusetts
Postal_Code: 02543-1598
Country: US

Contact_Voice_Telephone: 508-548-8700 x2348
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: bandrews@usgs.gov

Browse_Graphic:

Browse_Graphic_File_Name:

https://www.sciencebase.gov/catalog/file/get/5b97ca9ce4b0702d0e841ef3/?name=2017-049-FA_SVPdata_browse.jpg

Browse_Graphic_File_Description:

Thumbnail image of sound speed profile locations collected within Lake Powell, UT-AZ.

Browse_Graphic_File_Type: JPEG

Data_Quality_Information:

Logical_Consistency_Report:

Sound velocity profiles were acquired with an AML Minos X SVPT from 2017108–20171022 (JD281–295) and 20171024 to 20171115 (JD 297-319). No data were collected on 20171023 (JD 296) while the base of operations was moved from Bullfrog, UT in the northeast to Page, AZ in the southwest. No sound speed profiles were collected between 20171110 and 20171114 (JD 314-318) while survey operations were suspended due to equipment malfunction. These data only contain the downcast data collection.

Completeness_Report:

Each sound velocity profile (56 total) collected during survey 2017-049-FA is represented by an SVP formatted ASCII text file (see description below in the entity and attribute overview section), a PNG image file, and a feature point location in the Esri shapefile. Profile 2017-10-12_15-33-12 was faulty and excluded during QA/QC processing.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

DGPS navigation data for the sound velocity profiles were acquired using the WGS 84 coordinate system with an Applanix POS MV Wavemaster (model 220, V5) with two AeroAntenna Technologies GPS antennas located at either end of a 2-m baseline, which was oriented fore and aft and mounted atop the MBES pole, approximately midships on the starboard side of the vessel. A Hypack (v. 17.0.26.0) target was created to record the position of each SVP station, and the geographic coordinates were manually entered into the headers of the final Hypack .vel and Caris .svp formatted ASCII files. While the horizontal position accuracy is thought to be within 0.5 - 2 meters for the DGPS position solutions, we consider the sound velocity profile positions to be within 2-4 m, since the location of downrigger used to deploy the SVP relative to the MBES pole, approximately 1.5 meters aft, was not accounted for.

Vertical_Positional_Accuracy:

Vertical_Positional_Accuracy_Report:

Minos X SVPT depths are calculated by the AML SeaCast software(v. 4.4), which converts pressure sensor readings to depth using the standard formulas described in Fofonoff, N.P.and Millard, R.C., Jr., 1988, Algorithms for computation of fundamental properties of seawater, UNESCO Technical Papers in Marine Science, No. 44. The depths are thought to be accurate to within 1 meter.

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Originator: U.S. Geological Survey
Publication_Date: unpublished material
Title: sound velocity data

Type_of_Source_Media: disc
Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20171008
Ending_Date: 20171115

Source_Currentness_Reference: ground condition

Source_Citation_Abbreviation: raw sound velocity data
Source_Contribution:

Sound velocity profiles were collected using an AML Minos X SVPT deployed using an electric downrigger mounted on the port quarter of the R/V Stephens. The clutch on the downrigger was released to allow for free fall deployment of the instrument to the user defined depth above the lake floor, followed by motorized retrieval. Three AML Oceanographic XChange probes attached to the Minos X body logged sound velocity, pressure, and temperature data during each deployment. AML SeaCast software(v. 4.4) was used to read the profile data from the Minos X, edit the profile to preserve only the downcast portion of the deployment, and export the profile Caris .svp ASCII formatted files. DGPS navigation data for the sound velocity profiles were acquired using the WGS 84 coordinate system with an Applanix POS MV Wavemaster (model 220, V5) with two AeroAntenna Technologies GPS antennas located at either end of a 2-m baseline, which was oriented fore and aft and mounted atop the MBES pole, approximately midships on the starboard side of the vessel. A Hypack (v. 17.0.26.0) target was created to record the position of each SVP station, and the geographic coordinates were manually entered into the headers of the final Hypack .vel and Caris .svp formatted ASCII files.

Process_Step:

Process_Description:

PROCESS STEP 1: SVP profile acquisition during survey:
Sound velocity profiles were collected one to three times per survey day using the AML Minos X SVPT.
This process step and all subsequent process steps were conducted by the same person - Wayne Baldwin.

Process_Date: 201711
Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Wayne E. Baldwin
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) 548-8700 x2226
Contact_Facsimile_Telephone: (508) 457-2310
Contact_Electronic_Mail_Address: wbaldwin@usgs.gov

Process_Step:

Process_Description:

PROCESS STEP 2: Plot the SVP data and import into Spatialite database:
A python script was used to read the SVP data and plot the sound speed profile as speed of sound (meter/second) versus depth (meters). Position, date, time, and profile id were pulled from the SVP header and written into the image (PNG) for reference. Within the same script, the position, Julian day, time, and profile id were also imported into a Spatialite (version 4.3.0) enabled SQLite (version 3.21.0) database table. The geographic positions were used to create point geometries for the station locations, and additional fields indicating SurveyID, VesselID, DeviceID, and SVP_Image were added.

Process_Date: 201711

Process_Step:

Process_Description:

PROCESS STEP 3: Create Esri shapefile containing the point data:
The SVP point features were added (Add Data) into ArcMap (version 10.3.1) from the SQLite database, then exported (Right click on database feature class >Data>Export Data) to the new Esri point shapefile 2017-049-FA_SVPdata.shp.

Process_Date: 201711

Process_Step:

Process_Description:

Added keywords section with USGS persistent identifier as theme keyword.

Process_Date: 20200806
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: point
Point_and_Vector_Object_Count: 56

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: 2017-049-FA_SVPdata
Entity_Type_Definition:

Sound velocity profile locations for survey 2017-004-FA collected within Lake Powell, UT-AZ.

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: Lon
Attribute_Definition: Decimal degree longitude value in GCS WGS 84.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: -111.482500
Range_Domain_Maximum: -110.431667
Attribute_Units_of_Measure: degrees
Attribute_Measurement_Resolution: .000001

Attribute:

Attribute_Label: Lat
Attribute_Definition: Decimal degree latitude value in GCS WGS 84.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 36.986667
Range_Domain_Maximum: 37.835278
Attribute_Units_of_Measure: degrees
Attribute_Measurement_Resolution: .000001

Attribute:

Attribute_Label: SVP
Attribute_Definition:

Name of velocity profile used to distinguish between casts. Profiles are named by the Date and UTC time of the profile collection in the format YYYY-MM-DD_HH-MM-SS.

Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values: