Metadata: Identification_Information: Citation: Citation_Information: Originator: Theresa A. Fregoso Originator: David P. Finlayson Originator: David L. Smith Originator: Brian M. Mulvey Originator: Thomas E. Reiss Originator: Bruce E. Jaffe Publication_Date: 2017 Title: Acoustic Backscatter of the Sacramento River, from the Feather River to Knights Landing, California in February 2011 Geospatial_Data_Presentation_Form: GeoTiff Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/F72B8W65 Publication_Information: Publication_Place: Pacific Coastal and Marine Science Center, Santa Cruz, California Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.5066/F72B8W65 Online_Linkage: https://www.sciencebase.gov/catalog/file/get/5898ce0de4b0efcedb707565?name=SacRiv2011_bscat_nad83u10.zip Larger_Work_Citation: Citation_Information: Originator: Theresa A. Fregoso Originator: David P. Finlayson Originator: David L. Smith Originator: Brian M. Mulvey Originator: Thomas E. Reiss Originator: Bruce E. Jaffe Publication_Date: 2017 Title: Bathymetry and acoustic backscatter data of the Sacramento River, from the Feather River to Knights Landing, California in February 2011 Series_Information: Series_Name: data release Issue_Identification: DOI:10.5066/F72B8W65 Publication_Information: Publication_Place: Pacific Coastal and Marine Science Center, Santa Cruz, CA Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.5066/F72B8W65 Online_Linkage: https://www.sciencebase.gov/catalog/item/588f8d74e4b072a7ac08c35e Description: Abstract: This part of the data release presents acoustic backscatter data collected on February 1, 2011, in the Sacramento River from the confluence of the Feather River to Knights Landing. The data were collected by the USGS Pacific Coastal and Marine Science Center (PCMSC) team with collaboration and funding from the U.S. Army Corp of Engineers. This project used interferometric sidescan sonar to characterize the riverbed and channel banks along a 12 mile reach of the Sacramento River, California (River Mile 79 through River Mile 91) to aid in the understanding of fish response to the creation of safe habitat associated with levee restoration efforts in two 1.5 mile reaches of the Sacramento River between River Mile 80 and 86. Purpose: These data are intended for science researchers, students, policy makers, and the general public. These data can be used with geographic information systems or other software to identify bathymetric features. Supplemental_Information: Additional information about the field activity from which these data were derived is available online at: http://cmgds.marine.usgs.gov/fan_info.php?fan=S0311CA Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Although this Federal Geographic Data Committee-compliant metadata file is intended to document the data set in nonproprietary form, as well as in Esri format, this metadata file may include some Esri-specific terminology. Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 20110201 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -121.726069161 East_Bounding_Coordinate: -121.612041213 North_Bounding_Coordinate: 38.820603621 South_Bounding_Coordinate: 38.758185456 Keywords: Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:5898ce0de4b0efcedb707565 Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: elevation Theme: Theme_Keyword_Thesaurus: Data Categories for Marine Planning Theme_Keyword: Bathymetry and Elevation Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: digital elevation models Theme_Keyword: bathymetry Theme_Keyword: sea-floor acoustic reflectivity Theme_Keyword: sidescan sonar Theme_Keyword: sea-floor characteristics Theme_Keyword: real-time monitoring and reporting Theme_Keyword: interferometric sonar Theme: Theme_Keyword_Thesaurus: Global Change Master Directory (GCMD) Theme_Keyword: Water Depth Theme_Keyword: GPS (Global Positioning System) Theme_Keyword: Echo Sounders Theme: Theme_Keyword_Thesaurus: Marine Realms Information Bank (MRIB) keywords Theme_Keyword: river Theme_Keyword: levee Theme_Keyword: multibeam echo sounder Place: Place_Keyword_Thesaurus: Geographic Names Information System (GNIS) Place_Keyword: Sacramento River Place_Keyword: Knights Landing Place_Keyword: Woodland Place_Keyword: Feather River Access_Constraints: None Use_Constraints: USGS-authored or produced data and information are in the public domain from the U.S. Government and are freely redistributable with proper metadata and source attribution. Please recognize and acknowledge the U.S. Geological Survey and the U.S. Army Corps of Engineers as the originator(s) of the dataset and in products derived from these data. This information is not intended for navigation purposes. Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey, Pacific Coastal and Marine Science Center Contact_Person: PCMSC Science Data Coordinator Contact_Address: Address_Type: mailing and physical Address: 2885 Mission Street City: Santa Cruz State_or_Province: CA Postal_Code: 95060-5792 Country: US Contact_Voice_Telephone: 831-427-4747 Contact_Electronic_Mail_Address: pcmsc_data@usgs.gov Browse_Graphic: Browse_Graphic_File_Name: https://www.sciencebase.gov/catalog/file/get/5898ce0de4b0efcedb707565?name=SacRiverBackScatter2011.png&allowOpen=true Browse_Graphic_File_Description: image map showing the 0.5 m resolution acoustic backscatter of the Sacramento River, color-coded to show backscatter intensity, with zoomed insets of different areas. Browse_Graphic_File_Type: PNG Data_Set_Credit: The U.S. Geological Survey would also like to acknowledge the U.S. Army Corps of Engineers for their help collecting these data Native_Data_Set_Environment: Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.3.1.4959 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: This data has not been independently verified for accuracy. Logical_Consistency_Report: All backscatter values are derived from the same instruments and processing workflow. Completeness_Report: Dataset is considered complete for the information presented, as described in the abstract. Users are advised to read the rest of the metadata record carefully for additional details. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Estimated to be no less than 2 m, owing to water depth and total propagated uncertainties of the mapping systems, which include sonar system, position and motion compensation system, and navigation, as well as data processing that includes sounding cleaning, gridding, and datum transformations Lineage: Process_Step: Process_Description: Acoustic-survey data were collected using a 468.75 kHz SEA (Systems Engineering & Assessment Ltd) SWATHplus-H phase-differencing sidescan sonar. The survey vessel was equipped with a CodaOctopus F180 attitude and positioning system for the duration of the survey. The F180 received Real Time Kinematic (RTK) corrected Global Positioning System (GPS) data that were broadcast from shore to the survey vessel via UHF radio link. The RTK GPS data were combined with the inertial vessel motion measurements (pitch, roll, and heading) directly within the F180 hardware so that high-precision position and attitude corrections were fed in real time to the sonar acquisition equipment. Sound velocity measurements were collected continuously with an Applied Micro Systems Micro sound velocimeter deployed on the transducer frame for real-time sound velocity adjustments at the transducer-water interface. In addition, sound velocity profiles (SVPs) were collected with an Applied Micro Systems, SvPlus 3472. GPS data and measurements of vessel motion were combined in the F180 hardware to produce a high-precision vessel attitude packet. This packet was transmitted to the Swath Processor acquisition software in real-time and combined with instantaneous sound velocity measurements at the transducer head before each ping. The returned samples were projected to the seafloor using a ray-tracing algorithm working with the previously measured SVPs in SEA Swath Processor. A series of statistical filters were applied to the raw samples to isolate the seafloor returns from other spurious targets in the water column. Finally, the processed data were stored line-by-line in both raw (.sxr) and processed (.sxp) trackline files. The raw 16-bit backscatter data recorded simultaneously with bathymetry by the SWATHplus-H system was georeferenced and gain-normalized by the program SXPEGN, which was written by the USGS to enhance the backscatter imagery. The program normalizes for time-varying signal loss and beam directivity differences. The resulting normalized amplitude values are re-scaled to 16 bit, and gridded into a GeoJPEG using GRID Processor Software supplied by SEA. For further information on the parameters used for each instrument, see the accompanying methods summary in the report for the Data Release for S-03-11-CA.pdf (https://www.sciencebase.gov/catalog/file/get/588f8d74e4b072a7ac08c35e?name=Report_for_Data_Release_Survey_S-03-11-CA.pdf). Process_Date: 2011 Process_Step: Process_Description: Mis-identified keyword was removed. Point of Contact and Metadata Contact sections were replaced with static contact information. Process_Date: 20191119 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Susan A. Cochran Contact_Organization: U.S. Geological Survey, Pacific Coastal and Marine Science Center Contact_Address: Address_Type: mailing and physical Address: 2885 Mission St. City: Santa Cruz State_or_Province: CA Postal_Code: 95060 Country: USA Contact_Voice_Telephone: 831-460-7545 Contact_Electronic_Mail_Address: scochran@usgs.gov Process_Step: Process_Description: Edited metadata to add keywords section with USGS persistent identifier as theme keyword. No data were changed. Process_Date: 20201019 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 Process_Step: Process_Description: Performed minor edits to the metadata to correct typos. No data were changed Process_Date: 20211013 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Susan A. Cochran Contact_Position: Geologist Contact_Address: Address_Type: Mailing and Physical Address: 2885 Mission Street City: Santa Cruz State_or_Province: CA Postal_Code: 95060 Contact_Voice_Telephone: 831-460-7545 Contact_Electronic_Mail_Address: scochran@usgs.gov Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: raster Raster_Object_Information: Raster_Object_Type: Grid Cell Row_Count: 13571 Column_Count: 19614 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 10 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.9996 Longitude_of_Central_Meridian: -123 Latitude_of_Projection_Origin: 0.0 False_Easting: 500000 False_Northing: 0.0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: row and column Coordinate_Representation: Abscissa_Resolution: 0.5 Ordinate_Resolution: 0.5 Planar_Distance_Units: METERS Geodetic_Model: Horizontal_Datum_Name: D NAD 1983 CORS96 Ellipsoid_Name: GRS_1980 Semi-major_Axis: 6378137.0 Denominator_of_Flattening_Ratio: 298.257222101 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: Attribute Table Entity_Type_Definition: Table containing normalized acoustic backscatter values Entity_Type_Definition_Source: Producer Defined Attribute: Attribute_Label: Value Attribute_Definition: normalized acoustic backscatter Attribute_Definition_Source: Producer Defined Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 65394.84 Attribute_Units_of_Measure: numbers representing normalized intensity values Attribute_Measurement_Resolution: .01 Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey - ScienceBase Contact_Address: Address_Type: Mailing and Physical Address: Denver Federal Center, Building 810, Mail Stop 302 City: Denver State_or_Province: CO Postal_Code: 80225 Contact_Voice_Telephone: 1-888-275-8747 Contact_Electronic_Mail_Address: sciencebase@usgs.gov Resource_Description: Backscatter grid is available in Geotiff format (SacRiver2011_bscatt_nad83u10.tif), along with the tiff world file (SacRiver2011_bscatt_nad83u10.tfw), in zipped form, a low-resolution browse graphic of backcatter in png format (SacRiverBackScatter2011.png), and FGDC-compliant metadata (SacRiver2011_bscatt_nad83u10.xml). Distribution_Liability: Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: GeoTiff Format_Version_Number: ESRI ArcGIS 10.3.1.4959 Format_Information_Content: Geotiff 0.5-m resolution normalized backscatter of the Sacramento River from the Feather River to Knights Landing. File_Decompression_Technique: zip Transfer_Size: 1015.40 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://www.sciencebase.gov/catalog/file/get/5898ce0de4b0efcedb707565?name=SacRiv2011_bscat_nad83u10.zip Network_Resource_Name: https://doi.org/10.5066/F72B8W65 Access_Instructions: Data can be downloaded via the Internet Fees: None. Technical_Prerequisites: These data can be viewed with ESRI ArcGIS software. Metadata_Reference_Information: Metadata_Date: 20211013 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey, Pacific Coastal and Marine Science Center Contact_Person: PCMSC Science Data Coordinator Contact_Address: Address_Type: mailing and physical Address: 2885 Mission Street City: Santa Cruz State_or_Province: CA Postal_Code: 95060-5792 Country: US Contact_Voice_Telephone: 831-427-4747 Contact_Electronic_Mail_Address: pcmsc_data@usgs.gov Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998