10cct01_ss_tracklines.tif

Metadata also available as

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 - St. Petersburg Coastal and Marine Science Center

Originator: Nancy T. DeWitt

Originator: James G. Flocks

Originator: William R. Pfeiffer

Originator: Dana S. Wiese

Publication_Date: 2010

Publication_Time: 2010

Title: 10cct01_ss_tracklines.tif

Geospatial_Data_Presentation_Form: raster digital data

Series_Information:

Series_Name: USGS Data Series Publication
Issue_Identification: DS563

Publication_Information:

Publication_Place: St. Petersburg, FL
Publisher:: U.S. Geological Survey - St. Petersburg Coastal and Marine Science Center

Other_Citation_Details:

USGS Data Series 563 File Name = 10cct01_ss_tracklines.tif

Online_Linkage: <https://pubs.usgs.gov/ds/563>#

Description:

Abstract:: In March of 2010, the U.S. Geological Survey (USGS) conducted geophysical surveys east of Cat Island, Mississippi. The efforts were part of the USGS Gulf of Mexico Science Coordination partnership with the U. S. Army Corps of Engineers (USACE) to assist the Mississippi Coastal Improvements Program (MsCIP) and the Northern Gulf of Mexico (NGOM) Ecosystem Change and Hazards Susceptibility Project by mapping the shallow geological stratigraphic framework of the Mississippi Barrier Island Complex. The data collected will be used to create baseline bathymetry information that will address seafloor change. This report contains swath bathymetry and side scan sonar data collected aboard the R/V Survey Cat during Cruise 10CCT01. A combination of software packages was used to process and grid the data. This data series describes the methodology used and the resulting data projects.
Purpose:: This report serves as an archive of the processed swath bathymetry and side scan sonar data. Data products herein include gridded and interpolated surfaces, surface images, and x,y,z data products for both swath bathymetry and side scan sonar imagery. Additional files include trackline maps, navigation files, GIS files, Field Activity Collection System (FACS) logs, and formal FGDC metadata. Scanned images of the handwritten FACS logs are also provided as PDF files. Refer to the Acronyms page for expansion of acronyms and abbreviations used in this report.
Supplemental_Information:: These geophysical surveys will provide the data necessary for scientists to define, interpret, and provide baseline bathymetry and seafloor habitat for this area and to aid scientists in predicting future geomorpholocial changes of the islands with respect to climate change, storm impact, and sea-level rise. Furthermore, these data will provide information for barrier island restoration, particularly in Camille Cut, and provide protection for the historical Fort Massachusetts. For more information refer to <http://ngom.usgs.gov/gomsc/mscip/>.
The USGS St. Petersburg Coastal and Marine Science Center assigns a unique identifier to each cruise or field activity. For example, 10CCT01 tells us the data were collected in 2010 for the Coastal Change and Transport (CCT) study and the data were collected during the first field activity for that project in that calendar year. Refer to <http://walrus.wr.usgs.gov/infobank/programs/html/definition/activity.html> for a detailed description of the method used to assign the field activity ID.
Data were collected using a 26-foot Glacier Bay Catamaran. Side scan sonar and interferometric swath bathymetry data were collected simultaneously along the tracklines. The side scan sonar towfish was towed off the port side just slightly behind the vessel, close to the seafloor. The interferometric swath transducer was sled-mounted on a rail attached between the catamaran hulls. During the survey the sled is secured into position. Navigation was acquired with a CodaOctopus Octopus F190 Precision Attitude and Positioning System and differentially corrected with OmniSTAR. See the digital FACS equipment log for details about the acquisition equipment used. Both raw datasets were stored digitally and processed using SEA's Ltd. Swath Processor version 3.07 and CARIS HIPS and SIPS software version 7.0 in the St. Petersburg office. For more information on processing, refer to the Equipment and Processing page. Post-processing of the swath dataset revealed a motion artifact that is attributed to movement of the pole that the transducers are attached to in relation to the boat. The survey was forced to take place in the winter months, in which strong winds and rough waves contributed to a reduction in data quality. The rough seas contributed to both the movement of the pole and the very high noise base seen in the raw amplitude data of the side scan sonar. Chirp data were also collected during this survey and are archived separately.

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20100309
Beginning_Time: unknown
Ending_Date: 20100317
Ending_Time: unknown

Currentness_Reference: data collection interval

Status:

Progress: Complete
Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -89.100179
East_Bounding_Coordinate: -88.931303
North_Bounding_Coordinate: 30.286930
South_Bounding_Coordinate: 30.199814

Keywords:

Theme:

Theme_Keyword_Thesaurus: None
Theme_Keyword: trackline
Theme_Keyword: side scan sonar
Theme_Keyword: bathymetry
Theme_Keyword: USGS
Theme_Keyword: Klein 3900
Theme_Keyword: GeoTIFF

Place:

Place_Keyword_Thesaurus: None
Place_Keyword: GUIS
Place_Keyword: Mississippi
Place_Keyword: Cat Island
Place_Keyword: West Ship Island
Place_Keyword: Gulfport Ship Channel

Stratum:

Stratum_Keyword_Thesaurus: None
Stratum_Keyword: Water

Temporal:

Temporal_Keyword_Thesaurus: None
Temporal_Keyword: March 2010

Access_Constraints:

The U. S. Geological Survey requests that it be referenced as the originator of this dataset in any future products or research derived from these data.

Use_Constraints: These data are not to be used for navigation

Point_of_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Nancy T. DeWitt
Contact_Organization:: U.S. Geological Survey - St. Petersburg Coastal and Marine Science Center

Contact_Position: Geologist

Contact_Address:

Address_Type: mailing and physical address
Address: 600 4th Street South
City: St. Petersburg
State_or_Province: FL
Postal_Code: 33701
Country: USA

Contact_Voice_Telephone: (727) 803-8747 x3058

Contact_Electronic_Mail_Address: ndewitt@usgs.gov

Data_Set_Credit: Nancy T. DeWitt, William R. Pfeiffer, Jim Flocks, Dana Wiese

Native_Data_Set_Environment:

Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog version 9.3.1.3000

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:: The accuracy of the data is determined during data collection. This dataset is from a single cruise and therefore internally consistent. Methods are employed to maintain data collection consistency aboard various platforms. During mobilization, each piece of equipment (swath and sonar) is isolated to obtain internal and external offset measurements with respect to the survey platform. All the critical measurements are recorded manually and digitally and entered into their respective programs for calibration. Once calibration is complete and calibration status is considered acceptable then survey operations commence. Each system has a dedicated computer and efforts are made to utilize the same equipment and software versions. However, upgrades and changes occur and require additional setup, measurements, and notation. The swath transducer sonar head was sled-mounted between the catamaran pontoons. Offsets between the sonar head and the DGPS antennas were measured and entered into the F190 internal setup program. DGPS is always implemented for navigational accuracy. DGPS is normally provided through the OmniSTAR High Performance wide area GPS service unless otherwise noted.

Logical_Consistency_Report:

This dataset was completed on a single and continuous cruise over four days from the same research vessel platform. This

Completeness_Report:

This data provides a continuous and complete surface, however there may in be some cases where data is missing and inconsistent with reported tracklines. This is directly due to the exclusion of poor data, instrument failures.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

The ship was navigated using Differential Global Positioning System (DGPS) obtained using the CodaOctopus Octopus F190 Precision Attitude and Positioning System. Two antennas received the integrated OmniSTAR High Performance differential correction. The software used is F180 Series version 4.0.5. The horizontal accuracy of bathymetric data is at the limit of OmniSTAR, a wide-area differential GPS service, which is within 20 cm. Unless noted, all DGPS data are referenced to WGS84. The swath transducer sonar head was sled-mounted between the catamaran pontoons. Offsets between the sonar head and the DGPS antennas were measured and entered into the F190 internal setup program.

Quantitative_Horizontal_Positional_Accuracy_Assessment:

Horizontal_Positional_Accuracy_Value: 20
Horizontal_Positional_Accuracy_Explanation: centimeters

Lineage:

Process_Step:

Process_Description:

This is a GeoTIFF of the processed side scan sonar tracklines. The GeoTiff was exported from CARIS HIPS and SIPS version 7.0 and imported into ArcMap version 9.3.1. The symbology was set to colormap with the symbol label #24 displayed as "no color" to make the background transparent.

Process_Date: 2010

Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: William R. Pfeiffer
Contact_Organization: Jacobs Technology Inc., Tampa, FL

Contact_Position: Data Analyst

Contact_Address:

Address_Type: mailing and physical address
Address: 600 4th Street South
City: Saint Petersburg
State_or_Province: FL
Postal_Code: 33701
Country: USA

Contact_Voice_Telephone: (727) 803-8747 x3134

Contact_Electronic_Mail_Address: wpfeiffer@usgs.gov

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Raster

Raster_Object_Information:

Raster_Object_Type: Pixel
Row_Count: 933
Column_Count: 1604
Vertical_Count: 1

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Planar:

Grid_Coordinate_System:

Grid_Coordinate_System_Name: Universal Transverse Mercator

Universal_Transverse_Mercator:

UTM_Zone_Number: 16

Transverse_Mercator:

Scale_Factor_at_Central_Meridian: 0.999600
Longitude_of_Central_Meridian: -87.000000
Latitude_of_Projection_Origin: 0.000000
False_Easting: 500000.000000
False_Northing: 0.000000

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: row and column

Coordinate_Representation:

Abscissa_Resolution: 10.
Ordinate_Resolution: 10.

Planar_Distance_Units: meters

Geodetic_Model:

Horizontal_Datum_Name: D_WGS_1984
Ellipsoid_Name: WGS_1984
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.25722356300003

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: 10cct01_ss_tracklines.tif
Entity_Type_Definition: ESRI ArcGIS 9.3.1
Entity_Type_Definition_Source: ArcMap 9.3.1 GeoTIFF

Attribute:

Attribute_Label: ObjectID

Attribute_Definition: Internal feature number.

Attribute_Definition_Source: ESRI