VeeAnn A. Cross 2005 Open-File Report 2005-1089 Woods Hole Coastal and Marine Science Center, Woods Hole, MA U.S. Geological Survey, Coastal and Marine Geology Program https://doi.org/10.3133/ofr20051089 https://pubs.usgs.gov/of/2005/1089/data/visualization/southernpulley.zip VeeAnn A. Cross David C. Twichell Robert B. Halley Kate T. Ciembronowicz Bret D. Jarrett Erika S. Hammar-Klose Al C. Hine Stan D. Locker Dave F. Naar 2005 Open-File Report 2005-1089 Reston, VA U.S. Geological Survey https://pubs.usgs.gov/of/2005/1089/ Pulley Ridge is a series of drowned barrier islands that extends almost 200 km in 60-100 m water depths. This drowned ridge is located on the Florida Platform in the southeastern Gulf of Mexico about 250 km west of Cape Sable, Florida. This barrier island chain formed during the initial stage of the Holocene marine transgression. These islands were then submerged and left abandoned near the outer edge of the Florida Platform. The southern portion of Pulley Ridge hosts zooxanthellate scleractinian corals, green, red and brown macro algae, and a mix of deep and typically shallow-water tropical fishes. This reef community is in unusually deep water, and its extent and the controls on its distribution were unknown. To address these questions scientists from the U.S. Geological Survey Coastal and Marine Geology Program in cooperation with scientists from the University of South Florida Department of Marine Sciences have completed a detailed mapping of the southernmost 35 km of Pulley Ridge. The area was mapped using multibeam bathymetry, sidescan-sonar imagery, and high-resolution seismic-reflection profiling to define the geologic framework on which the reef is established. Submersible dives, remotely operated vehicle (ROV) transects, and transects of bottom photographs and video were collected to identify the corals and to map their distribution. This extensive suite of data has been compiled and preliminary analysis of the data suggests that the reefs are not tied to the ridge system, but instead are more broadly distributed. Whether reef distribution is controlled by oceanographic conditions or by subtle differences in the substrate that overlies the barrier island system is unclear, and are topics of continued research. This animation is provided to provide the 3D visualization relating the SeaBOSS bottom photographs with the high-resolution bathymetry collected in the study area. 2005 publication date Complete None planned -83.792254 -83.591486 25.000776 24.671257 USGS Metadata Identifier USGS:0641c2e7-66b3-4d0a-9216-bf2ea0dae46e None animation Coastal and Marine Geology Program CMGP OF 2005-1089 Open-File Report reef bathymetry SeaBOSS U.S. Geological Survey USGS Woods Hole Science Center MPEG Fledermaus fly-through ISO 19115 Topic Category oceans geoscientificInformation imageryBaseMapsEarthCover USGS Thesaurus navigational data remote sensing None Florida Florida Shelf Gulf of Mexico North America Pulley Ridge United States None. The U.S. Geological Survey must be referenced as the originator of the dataset in any future products or research derived from these data. VeeAnn A. Cross U.S. Geological Survey Marine Geologist mailing and physical address

384 Woods Hole Rd.

Woods Hole MA 02543-1598 (508) 548-8700 x2251 (508) 457-2310 vatnipp@usgs.gov Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.0.0.535 Information unavailable from original metadata. Information unavailable from original metadata. High-resolution swath bathymetry was converted into a Fledermaus file format (data object) with a colormap applied using the IVS DMAGIC software package. unknown An ArcView avenue script was used to derive the x and y corner point locations of a SeaBOSS bottom photograph if the photograph was made vertical. This was done by taking the polyline shapefile of the photograph locations to get the direction of travel. Since this polyline shapefile was generated from the point shapefile of photograph locations, each vertex in the polyline represents a photo location. A graphic line, perpendicular to the direction of travel of the polyline, was generated at each vertex of the SeaBOSS polyline. The length of this graphic is a constant value as defined in the script. For this work, the length of the graphic line was set to 200m. This in-house generated script is called createtransectsatvertices.ave. unknown These graphic lines were then converted to a polyline shapefile. unknown These polylines were then rotated 45 degrees using the in-house script vac_rotatepolyline.ave. unknown The script track_startend.ave was then used to add the start and end points (x and y) to each polyline. Other attributes that correspond to each photo location were incorporated into this shapefile. These include the bottom photograph filename corresponding to each line, approximate depth at the center of each transect line, and an upper z-limit (10 meters above the seafloor elevation). unknown This table of information was then exported to a delimited text file and reformatted using an awk script. The new format incorporated the command line version of the IVS vertical image creator. This command requires the following information: mkvimage < -in <imageFile>> [-out <sdOutFile> ] < -start xval yval > < -end xval yval > < -zrange zmin zmax > For use within a script running from a command prompt, the text "cmdop" needs to be added at the beginning of the line. This program takes as input an image file that represents a vertically oriented image plane along with the starting and ending locations and z-range. It then creates a Fledermaus formatted SD file representing a vertical slice that can be used in a Fledermaus 3D scene. unknown A subset of the total number of SeaBOSS bottom photographs was selected. These points were also extracted from the photopnts shapefile into a separate shapefile, while the remaining points were left in a separate shapefile. unknown The study area was roughly divided into 3 areas: southern, central and northern. This was necessary due to the large number of vertical images that were going to be used. The bathymetry SD files and the point shapefiles representing the selected images and remaining images were loaded into Fledermaus. In addition, the vertical image files corresponding to the southern portion of the study area were also loaded. The following projection parameters were used for the scene: near clipping plane: 0.01 far clipping plane: 250000 scene pushback: 250 global scene scale: 28 In addition to the data files, a polyline shapefile was also added to the scene which was to represent the approximate flight path for the animation. A vertical exaggeration of 18 was applied to the scene. This exaggeration also applied to the vertical images. The initial vertical extent of each image was 10 meters, but with this additional exaggeration applied, the images remained proportional based on a 200 m width for each image. unknown Using a Polehemus Isotrak 3D mouse (bat), a flight path was recorded in Fledermaus. unknown IVS's Movieclient software was used to smooth the resulting flight path and create an MPEG-1 file based on the flight path and the corresponding scene file. Within movieclient, the anti-aliasing parameter was set to 3, with the render magnification parameter set to 2. unknown VideoMach was then used to add visual effects and combine audio and video. unknown Edits to the metadata were made to fix any errors that MP v 2.9.36 flagged. This is necessary to enable the metadata to be successfully harvested for various data catalogs. In some cases, this meant adding text "Information unavailable" or "Information unavailable from original metadata" for those required fields that were left blank. Other minor edits were probably performed (title, publisher, publication place, etc.). Attempted to modify http to https where appropriate. The link to the larger work citation had to be fixed. Added the standard order process section in the Distribution Information section - which included adding a link to the data. Added ISO 19115 Topic Category keywords. The metadata date (but not the metadata creator) was edited to reflect the date of these changes. The metadata available from a harvester may supersede metadata bundled within a download file. Compare the metadata dates to determine which metadata file is most recent. 20170329 U.S. Geological Survey VeeAnn A. Cross Marine Geologist Mailing and Physical

384 Woods Hole Road

Woods Hole MA 02543-1598 508-548-8700 x2251 508-457-2310 vatnipp@usgs.gov USGS Thesaurus keywords added to the keyword section. 20180720 U.S. Geological Survey VeeAnn A. Cross Marine Geologist Mailing and Physical

384 Woods Hole Road

Woods Hole MA 02543-1598 508-548-8700 x2251 508-457-2310 vatnipp@usgs.gov Crossref DOI link was added as the first link in the metadata. 20191118 U.S. Geological Survey VeeAnn A. Cross Marine Geologist Mailing and Physical

384 Woods Hole Road

Woods Hole MA 02543-1598 508-548-8700 x2251 508-457-2310 vatnipp@usgs.gov Added keywords section with USGS persistent identifier as theme keyword. 20200908 U.S. Geological Survey VeeAnn A. Cross Marine Geologist Mailing and Physical

384 Woods Hole Road

Woods Hole MA 02543-1598 508-548-8700 x2251 508-457-2310 vatnipp@usgs.gov VeeAnn A. Cross U.S. Geological Survey Marine Geologist mailing and physical address

384 Woods Hole Rd.

Woods Hole MA 02543-1598 (508) 548-8700 x2251 (508) 457-2310 vatnipp@usgs.gov Downloadable Data Neither the U.S. Government, the Department of the Interior, nor the USGS, 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 information, apparatus, product, or process disclosed, nor represent that its use would not infringe on privately owned rights. 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. MPEG The zip files contains the MPEG and associated metadata. 66 https://pubs.usgs.gov/of/2005/1089/data/visualization/southernpulley.zip none The user must have an installed program, such as Windows Media Player or RealPlayer, capable of playing an MPEG animation file to view this visualization file. 20240318 VeeAnn A. Cross U.S. Geological Survey Marine Geologist mailing and physical address

384 Woods Hole Rd.

Woods Hole MA 02543-1598 (508) 548-8700 x2251 (508) 457-2310 whsc_data_contact@usgs.gov The metadata contact email address is a generic address in the event the person is no longer with USGS. (updated on 20240318) FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998 local time