Hourly measurements made by selected ship sensors on the R/V Seward Johnson during the "Estuary to the Abyss 2004" expedition sponsored by the National Oceanic and Atmospheric Administration (NOAA) Office of Ocean Exploration, August 20 through September 1, 2004. Measurements include ship's position and heading, air temperature, relative humidity, barometric pressure, wind speed and direction, depth, total solar irradiance, chlorophyll-a (fluorometer), sea surface temperature, and salinity. This data set was compiled from Virtual Instrument Data System (VIDS) ASCII files provided by the University of Miami Marine Technology Group at Harbor Branch Oceanographic Institution.

Ship track of R/V Seward Johnson during the "Operation Deep Scope 2005" expedition sponsored by the National Oceanic and Atmospheric Administration (NOAA) Office of Ocean Exploration, August 19 through September 4, 2005. This track was based on the hourly ship's position from the Virtual Instrument Data System (VIDS) provided by the University of Miami Marine Technology Group at Harbor Branch Oceanographic Institution.

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.

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.

In 2002 and 2003, the U.S. Geological Survey (USGS), Woods Hole Coastal and Marine Science Center (WHCMSC), in cooperation with the National Oceanic and Atmospheric Administration (NOAA), conducted three exploration cruises (USGS Cruise 02051, NOAA RB0208, September 24 to 30, 2002; USGS Cruise 03008, NOAA RB0303, February 18 to March 7, 2003 and USGS Cruise 03032, NOAA RB0305, August 28 to September 4, 2003). These cruises mapped for the first time the morphology of this entire tectonic plate boundary stretching from the Dominican Republic in the west to the Lesser Antilles in the east, a distance of approximately 700 kilometers (430 miles). Observations from these three exploration cruises, coupled with computer modeling and published Global Positioning System (GPS) results and earthquake focal mechanisms have provided new information that is changing the evaluation of the seismic and tsunami hazard from this plate boundary. The observations collected during these cruises also contributed to the basic understanding of the mechanisms that govern plate tectonics, in this case, the creation of the island of Puerto Rico and the deep trench north of it. Results of the sea floor mapping have been an important component of the study of tsunami and earthquake hazards to the northeastern Caribbean and the U.S. Atlantic coast off the United States. For additional information on the cruises see: http://woodshole.er.usgs.gov/operations/ia/public_ds_info.php?fa=2002-051-FA http://woodshole.er.usgs.gov/operations/ia/public_ds_info.php?fa=2002-051-FA http://woodshole.er.usgs.gov/operations/ia/public_ds_info.php?fa=2002-051-FA

Three months after the Deepwater Horizon (DWH) oil spill, and before extensive oil impacts reach shelf-edge reefs in the eastern Gulf of Mexico, NOAA's Cooperative Institute for Ocean Exploration, Research and Technology (CIOERT) is conducting a rapid response, multi-disciplinary, multi-institutional expedition to assess the impacts of the DWH oil spill on Florida's esophotic and deepwater ecosystems. CIOERT's expertise, tools, and technologies will address critical research needs associated with the DWH oil spill and potential impacts on the health of diverse ecosystems off Florida's Gulf and Atlantic coasts. CIOERT's 2010-11 Science Plan, developed before the spill began in April 2010, included a multi-disciplinary science expedition to study deep coral and live bottom reefs along the shelf edge of Florida, from the Cape Canaveral to the Alabama border. In response to the spill event, the mission has been moved up to begin July 9 aboard FAU/HBOI's R/V Seward Johnson. Scientists will use the research submersible Johnson-Sea-Link (JSL) to address critical research needs associated with the Deepwater Horizon oil spill and the potential impacts on the health of diverse shelf-edge ecosystems and new ocean resources. Working closely with technicians trained in Natural Resource Damage Assessment (NRDA) protocols, the expedition will characterize sub-surface spill properties and identify impacts on deep-reef resources. The expedition is closely integrated with other NOAA missions, complementing them in information collected and areas sampled.

This dataset shows the cruise tracklines for the acoustic surveys completed along the 58‐km long Assateague barrier island stretching from the Ocean City inlet in Maryland, down past Chincoteague Island in northern Virginia. The data was collected June 20th-25th, 2014 and May 12th - 21th, 2015. Full coverage side-scan sonar and partial coverage bathymetry data were collected using an EdgeTech 6205 Multiphase Echosounder. In total, 73 square kilometers were mapped at primarily at 100m line spacing and 80 m swath range per channel (to allow overlap between lines).

This dataset shows the cruise tracklines for the acoustic surveys completed along the 58‐km long Assateague barrier island stretching from the Ocean City inlet in Maryland, down past Chincoteague Island in northern Virginia. The data was collected June 20th-25th, 2014 and May 12th - 21th, 2015. Full coverage side-scan sonar and partial coverage bathymetry data were collected using an EdgeTech 6205 Multiphase Echosounder. In total, 73 square kilometers were mapped at primarily at 100m line spacing and 80 m swath range per channel (to allow overlap between lines).

Benthic habitat polygon coverages are being created for the Olympic Coast national marine sanctuary (OCNMS).

Benthic habitat polygon coverages are being created for the Olympic Coast national marine sanctuary (OCNMS).