Dr. David Naar 201111 Unknown vector digital data XYZ ASCII format high-resolution bathymetry data generated from the 2003, 2007, and 2009 combined multibeam sonar survey of Pulley Ridge, Gulf of Mexico, Key West, Florida. These data are intended for science researchers, students, policy makers, and the general public. The data can be used with geographic information systems (GIS) or other software to display bathymetry data of the West Florida Shelf, Gulf of Mexico. Resource Description: Downloadable Data. Cruise dates R/V Suncoaster in 2003, 2007, and the R/V Weatherbird II in 2009 required. 2003 Unknown 2007 Unknown 2009 Unknown ground condition Complete Unknown -83.919309 -83.736908 24.854269 24.709229 None Multibeam Mapping ISO 19115 Topic Category elevation 006 CoRIS Discovery Thesaurus Geographic Information > Bathymetry CoRIS Theme Thesaurus EARTH SCIENCE > Oceans > Bathymetry/Seafloor Topography > Bathymetry CoRIS Place Thesaurus COUNTRY/TERRITORY > United States of America > Florida OCEAN BASIN > Atlantic Ocean > Gulf of Mexico > Florida COUNTRY/TERRITORY > United States of America > Florida > Monroe County > Key West (25N080W0016) OCEAN BASIN > Atlantic Ocean > North Atlantic Ocean > Florida Reef Tract > Lower Florida Keys > Key West (25N080W0016) None Pulley Ridge Gulf of Mexico Key West Florida CoRIS Region Florida None Please recognize the University of South Florida as the source of this information. David Naar University of South Florida, College of Marine Science Associate Professor of Marine Geophysics mailing and physical address

140 7th Avenue South

St. Petersburg Florida 33701-5016 USA (727) 553 1637 (727) 553 1189 naar@usf.edu Leigh Hedgepeth ENS/NOAA 3500 Delwood Beach Rd. Panama City Beach, FL 32408 (850) 234-6541 ext. 212 Leigh.hedgepeth@noaa.gov Dr. David F Naar Associate Professor University of South Florida, College of Marine Science 140 7th Avenue South St. Petersburg, Florida 33701-5016 USA (727) 553 1637 (voice) (727) 553 1189 (FAX) naar@usf.edu KSI EM 710 2X2 degree acquisition system was used to collect the data using a SEAPATH Motion sensor. CARIS was used for post-processing. Processed GeoTIFF images were exported from CARIS for use in ArcGIS. Bathymetric data were post-processed using CARIS HIPS ver. 7.0 hydrographic data cleaning system software. Soundings were corrected for vessel motion using Kongsberg Seatex Motion Reference Unit (MRU), variations in water column sound velocity using Applied Microsystems smartSVP data, and adjusted for variations in water height (tides) using vertical position data from Kongsberg Seatex. Post-survey data cleaning, as well as Bathymetry Associated with Statistical Error (BASE) Surface creation using swath angle algorithm, were applied by CMWS. CMWS created final products from these post-processed multibeam bathymetry data. Soundings (xyz) were exported from a BASE Surface as an xyz text file. The xyz were imported into Fledermaus Dmagic ver. 7.1 to grid. In Dmagic, the 1m decimated xyz text files were interpolated into digital elevation model (DEM) grids. The Fledermaus grids were exported as ArcInfo ASCII raster files (.asc), which were converted into bathymetry ArcInfo grids in ArcGIS. Final x,y,z soundings, surface models, and derived products are relative to the NAD83 datum. Multibeam data were acquired using Kongsberg EM710 multibeam sonar system aboard the Lost Coast Explorer by University of South Florida. A Kongsberg Seatex Seapath system was used to provide position and attitude data during data collection and accounted for vessel motion such as heave, pitch, and roll (x and y position accuracy 1cm, z position accuracy 2cm, heading accuracy 0.05%, roll and pitch accuracy 0.03, heave accuracy 5% or 5cm). Altitude data were used to account for tide cycle fluctuations and sound velocity profiles were collected with an Applied Microsystems smart SV. The Center for Marine and Wetland Studies at Coastal Carolina University created final produ No accuracy assessment was completed for this dataset. The instruments involved are capable of x and y position accuracy of 1cm, heading accuracy of 0.05% and roll and pitch accuracy of 0.03%. No tidal correction was made to the data. The instruments involved are capable of a z position accuracy of 2cm and heave accuracy of 5% or 5cm. The data are approximately set at a Mean Sea Level Chart datum but are not tide corrected, because tidal variation is a small percent (<0.01%) compared to the total depth. The tidal range is also less than the total accuracy of the data along these single transits and thus any slight offset is not observable within the data. The data crossing over a previous NOAA multibeam survey matched at 99% of total depth. Lead weight harbor verifications were done in both Key West and Pascagoula matching within 5 cm. Point features present. Similar scarps and bioherms were observed with the new data as was visible in the previous data collected by NOAA in a systematic survey along the slope of the west shelf of Florida in depths ranging from 300 to 700 meters. As much data was collected as possible within the time constraints of the cruise. No accuracy assessment was completed for this dataset. The instruments involved are capable of x and y position accuracy of 1cm, heading accuracy of 0.05% and roll and pitch accuracy of 0.03%. No tidal correction was made to the data. The instruments involved are capable of a z position accuracy of 2cm and heave accuracy of 5% or 5cm. Bathymetric data were post-processed using CARIS HIPS ver. 7.0 hydrographic data cleaning system software. Soundings were corrected for vessel motion using Kongsberg Seatex Motion Reference Unit (MRU), variations in water column sound velocity using Applied Microsystems smartSVP data, and adjusted for variations in water height (tides) using vertical position data from Kongsberg Seatex. Post-survey data cleaning, as well as Bathymetry Associated with Statistical Error (BASE) Surface creation using swath angle algorithm, were applied by CMWS. CMWS created final products from these post-processed multibeam bathymetry data. Soundings (xyz) were exported from a BASE Surface as an xyz text file. The xyz were imported into Fledermaus Dmagic ver. 7.1 to grid. In Dmagic, the 1m decimated xyz text files were interpolated into digital elevation model (DEM) grids. The Fledermaus grids were exported as ArcInfo ASCII raster files (.asc), which were converted into bathymetry ArcInfo grids in ArcGIS. Final x,y,z soundings, surface models, and derived products are relative to the WGS84 datum. Unknown David Naar University of South Florida, College of Marine Science Associate Professor of Marine Geophysics mailing and physical address

140 7th Avenue South

St. Petersburg Florida 33701-5016 USA (727) 553 1637 (727) 553 1189 naar@usf.edu Unknown Multibeam Mapping of Pulley Ridge, Gulf of Mexico, Key West, Florida Point 0.00002 0.00002 Decimal Degrees WGS 84 WGS 84 6378137.0 0.0033528106647475 Mean sea level 0.01 meters Attribute Values David Naar University of South Florida, College of Marine Science Associate Professor of Marine Geophysics mailing and physical address

140 7th Avenue South

St. Petersburg Florida 33701-5016 USA (727) 553 1637 (727) 553 1189 naar@usf.edu Offline Data These data not intended for navigational purposes. Although these data have been used by the University of South Florida, College of Marine Science, these data and information are provided with the understanding that they are not guaranteed to be usable, timely, accurate, or complete. Users are cautioned to consider carefully the provisional nature of these data and information before using them for decisions that concern personal or public safety or the conduct of business that involves substantial monetary or operational consequences. Conclusions drawn from, or actions undertaken on the basis of, such data and information are the sole responsibility of the user. Neither the University of South Florida or the State of Florida nor any agency thereof, 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 data, software, information, apparatus, product, or process disclosed, nor represent that its use would not infringe on privately owned rights. Trade, firm, or product names and other references to non-University of South Florida products and services are provided for information only and do not constitute endorsement or warranty, express or implied, by the University of South Florida or the State of Florida, as to their suitability, content, usefulness, functioning, completeness, or accuracy. Disclaimer- While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty. ASCII, GeoTIFF, ESRI, CARIS, or KSI raw format Data are provided to the NOAA Panama City Lab on a GoFlex USB 500 Gb drive. No compression applied 0.5 USB Drive Unknown KSI EM 710 2X2 degree acquisition system was used to collect the data using a SEAPATH Motion sensor. CARIS was used for post-processing. Processed GeoTIFF images were exported from CARIS for use in ArcGIS. None Data are provided to NOAA Panama City Lab on GoFlex USB 500 Gb drive. Archive versions will be also stored at USF, and eventually forwarded to the National Geophysical Data Center in Boulder Colorado, at NAVO at Stennis Space Center in Mississippi, and other data centers as appropriate. 1 week Distributed by: Dr. David F Naar University of South Florida, College of Marine Science 140 7th Avenue South St. Petersburg, FL 33701-5016 USA (727) 553 1637 (voice) Availability in digital form: Data format: ASCII, GeoTIFF, ESRI, CARIS, or KSI raw format Network links: N/A Cruise dates 9-Nov-2011 through 11-Nov-2011 required. Cost to order the data: None These data are intended for science researchers, students, policy makers, and the general public. The data can be used with geographic information systems (GIS) or other software to display bathymetry data of the West Florida Shelf, Gulf of Mexico. 2011 Unknown 20121220 20111206 NOAA NMFS Panama City Laboratory Leigh Hedgepeth Marine Protected Area GIS Specialist mailing and physical

3500 Delwood Beach Rd

Panama City Beach FL 32408 USA 850-234-6541 ex. 212 850-235-3559 leigh.hedgepeth@noaa.gov 0700-1500 M-F FGDC Content Standard for Digital Geospatial Metadata FGDC Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998) Local Time None Please recognize the University of South Florida as the source of this information. 20111206035430 None 20030101 20091231 http://www.coris.noaa.gov/metadata/records/html/pulley_ridge_2008_2009.html 6414