APBAYMOS1M.TIF - 1m Sidescan-Sonar Mosaic of Apalachicola Bay, Florida

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: U.S. Geological Survey
Publication_Date: 2007
Title:
APBAYMOS1M.TIF - 1m Sidescan-Sonar Mosaic of Apalachicola Bay, Florida
Edition: 1.0
Geospatial_Data_Presentation_Form: remote-sensing image
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2006-1381
Publication_Information:
Publication_Place: Woods Hole Science Center, Woods Hole, Massachusetts
Publisher: U.S. Geological Survey, Coastal and Marine Geology Program
Online_Linkage:
<http://pubs.usgs.gov/of/2006/1381/GIS/raster/sidescan/apbaymos1m.zip>
Larger_Work_Citation:
Citation_Information:
Originator: David C. Twichell
Originator: Brian D. Andrews
Originator: H. Lee Edmiston
Originator: William R. Stevenson
Publication_Date: 2007
Title:
Geophysical Mapping of oyster habitats in a shallow estuary; Apalachicola Bay, Florida
Edition: 1.0
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2006-1381
Publication_Information:
Publication_Place: Woods Hole Science Center, Woods Hole, Massachusetts
Publisher: U.S. Geological Survey, Coastal and Marine Geology Program
Online_Linkage: <http://pubs.usgs.gov/of/2006/1381/>
Description:
Abstract:
These data were collected under a cooperative mapping program between the U.S. Geological Survey (USGS), the National Oceanic and Atmospheric Administration Coastal Services Center (NOAA\CSC), and the Apalachicola National Estuarine Research Reserve (NERR). The primary objectives of this program were to collect marine geophysical data to develop a suite of seafloor maps to better define the extent of oyster habitats, the overall seafloor geology of the bay and provide updated information for management of this resource. In addition to their value for management of the bay's oyster resources, the maps also provide a geologic framework for scientific research and the public.

High resolution bathymetry, backscatter intensity, and seismic profile data were collected over a 230 square kilometers of the floor of the bay. The study focused on the Apalachicola Bay and Western St. George Sound portions of the estuary in mostly in depths > 2.0 meters.

Purpose:
These data are high-resolution acoustic backscatter measurements of the bottom of Apalachicola Bay Florida. This raster covers approximately 141 square kilometers of portions of Apalachicola Bay.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20050405,20060529
Ending_Date: 20050405,20060627
Currentness_Reference: ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -85.100148
East_Bounding_Coordinate: -84.870076
North_Bounding_Coordinate: 29.735565
South_Bounding_Coordinate: 29.587799
Keywords:
Theme:
Theme_Keyword_Thesaurus: General
Theme_Keyword: U.S. Geological Survey
Theme_Keyword: USGS
Theme_Keyword: Coastal and Marine Geology Program
Theme_Keyword: CMGP
Theme_Keyword: Woods Hole Science Center
Theme_Keyword: WHSC
Theme_Keyword: Seafloor
Theme_Keyword: Marine Geology
Theme_Keyword: GeoTIFF image
Theme_Keyword: field activity serial number 05001
Theme_Keyword: field activity serial number 06001
Theme_Keyword: Sidescan
Theme_Keyword: Sidescan-Sonar
Theme_Keyword: Klein 3000
Theme_Keyword: grey-scale image
Theme_Keyword: gray-scale image
Theme_Keyword: backscatter imagery
Theme_Keyword: seafloor mapping
Theme_Keyword: geologic mapping
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: oceans and estuaries
Theme_Keyword: imageryBaseMapsEarthCover
Theme_Keyword: geoscientificInformation
Place:
Place_Keyword_Thesaurus: General
Place_Keyword: Apalachicola Bay
Place_Keyword: Florida
Place_Keyword: Apalachicola National Estuarine Research Reserve
Place_Keyword: United States
Place_Keyword: Gulf of Mexico
Stratum:
Stratum_Keyword_Thesaurus: General
Stratum_Keyword: Seafloor
Temporal:
Temporal_Keyword_Thesaurus: General
Temporal_Keyword: 2005
Temporal_Keyword: 2006
Access_Constraints: None
Use_Constraints:
Data are not intended for navigational use.

These data should not be used at resolutions for which it is not intended.

Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey (USGS) as the source of this information.

Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Brian Andrews
Contact_Organization: U.S. Geological Survey
Contact_Position: Geographer
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Rd
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
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: <http://pubs.usgs.gov/of/2006/1381/GIS/thumbnails/apbaymos1m.jpg>
Browse_Graphic_File_Description: gray scale image of backscatter values
Browse_Graphic_File_Type: JPEG
Native_Data_Set_Environment:
Microsoft Windows 2000 Version 5.2 (Build 3790) Service Pack 2; ESRI ArcCatalog 9.2.2.1350
Cross_Reference:
Citation_Information:
Originator: Danforth, W.W.
Publication_Date: 1997
Title:
Xsonar/ShowImage: a complete system for rapid sidescan-sonar processing and display
Edition: 1.0
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 97-686
Publication_Information:
Publication_Place: Woods Hole Science Center, Woods Hole, Massachusetts
Publisher: U.S. Geological Survey, Coastal and Marine Geology Program
Larger_Work_Citation:
Citation_Information:
Cross_Reference:
Citation_Information:
Originator: Paskevich, V.F.
Publication_Date: 1992
Title:
Digital mapping of sidescan-sonar data with the Woods Hole Image Processing System
Edition: 1.0
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 92-536
Publication_Information:
Publication_Place: Woods Hole Science Center, Woods Hole, Massachusetts
Publisher: U.S. Geological Survey, Coastal and Marine Geology Program
Data_Quality_Information:
Attribute_Accuracy:
Completeness_Report:
Although both the 100 kHz and 500 kHz frequency data were collected, only the low frequency 100 kHz data processed and included in this mosaic. Small differences in contrast stretch (DN values) exist because of variations in sea and weather conditions on each survey day.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
RTK-GPS is assumed to be accurate within 1-2 meters. Standard GPS is assumed accurate within 5-10 meters. 99% of the positional data are DGPS. Unless noted, all GPS/DGPS data are referenced to WGS84 (NAD83). The sidescan-sonar towfish was towed from an outrigger on the starboard side of the survey vessel in 2005 and the port side in 2006 such that the sonar was about 1-m below the surface and even with the stern of the survey vessel.
Lineage:
Process_Step:
Process_Description:
The sidescan-sonar data were acquired with a Klein 3000 dual-frequency sidescan-sonar systems. The Klein 3000 operates in a frequency range of 100 - 120 kHz. All sidescan-sonar data were logged digitally at a sample rate resulting in a 0.18-m pixel size in the across-track direction and approximately 0.14-m in the along-track direction . A median filtering routine was applied to the sidescan-sonar data to remove speckle noise, resulting in a 0.73-m pixel size. The data for each survey were further processed and digitally mosaiced using PCI Geomatics Software and procedures described in Danforth (1997), and Paskevich (1992) resulting in an enhanced, geographically correct, sidescan-sonar mosaic with 1 meter pixel resolution. The composite mosaic was exported as a TIFF image, with an associated world file.
Process_Date: 200609
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Brian Andrews
Contact_Organization: U.S. Geological Survey
Contact_Position: Geographer
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: 508-548-8700 x2348
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: bandrews@usgs.gov
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Raster
Raster_Object_Information:
Raster_Object_Type: Pixel
Row_Count: 16000
Column_Count: 22000
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: 1.000000
Ordinate_Resolution: 1.000000
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: 298.257224
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label:
Attribute:
Attribute_Label: ObjectID
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: Value
Attribute:
Attribute_Label: Count
Overview_Description:
Entity_and_Attribute_Overview:
There are no attributes associated with a GeoTIFF image. Image pixel values contain acoustic reflectivity values normalized to an 8-bit data range (0-255). Low-backscatter is represented by dark tones (low values) and high-backscatter is represented by bright tones (high values).
Distribution_Information:
Distributor:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Brian Andrews
Contact_Organization: U.S. Geological Survey
Contact_Position: Geographer
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: 508-548-8700 x2348
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: bandrews@usgs.gov
Resource_Description: Downloadable Data
Distribution_Liability:
Although this data set has been used by the U.S. Geological Survey (USGS), no warranty, expressed or implied, is made by the USGS as to the accuracy of the data and/or related materials. 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: TIFF
Format_Version_Number: ArcGIS 9.2
Format_Specification: GeoTIFF
Format_Information_Content:
File contains sidescan-sonar imagery data collected in Apalachicola Bay, Florida
File_Decompression_Technique: zip
Transfer_Size: 335.69
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
<http://pubs.usgs.gov/of/2006/1381/GIS/raster/sidescan/ApBayMos1m.zip>
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
Compatibility_Information: None
Fees: None
Technical_Prerequisites:
These data are available as an 8 bit unsigned integer GeoTIFF .To utilize these data, the user must have an image viewer, image processing or ESRI software capable of importing and viewing a GeoTIFF image.
Metadata_Reference_Information:
Metadata_Date: 20071107
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Brian Andrews
Contact_Organization: U.S. Geological Survey
Contact_Position: Geographer
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: 508-548-8700 x2348
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: bandrews@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
Generated by mp version 2.8.25 on Wed Nov 07 13:18:31 2007