Field Activity 2006-001-FA

Identifier 2006-001-FA
Purpose Complete sea floor mapping of Apalachicola Bay using the RAFAEL to map areas deeper than 2 m and the ASV IRIS for mapping areas shallower than 2 m.
Location Apalachicola Bay, Florida, United States, Gulf of Mexico, North America, North Atlantic;
Summary This field season marked the second year of surveying in Apalachicola Bay. The goal of the mapping project was to provide an updated map of the distribution of oyster beds in the bay. Continuous coverage sidescan sonar imagery and bathymetric data were used to achieve this goal, and high-resolution chirp profiles were used to define the geologic framework upon which the oyster beds are set. The bay is shallow (average depth 2.5 m), and the crests of most of the oyster beds are in water depths less than 1 m. Consequently the entire area could not be surveyed using the RAFAEL. IRIS, the newly acquired ASV, was used to map the shallow areas. This was the first use of this system, and it proved quite successful. This year's field operation was conducted during late May and June. The RAFAEL collected data during 25 days of the 29-day field program and IRIS collected data during 14 days. Aboard RAFAEL RTK GPS navigation, Klein sidescan sonar imagery, Submetrix interferometric bathymetry, and chirp sub-bottom profiles were collected in digital form along 1492 km of trackline. IRIS collected RTK GPS navigation, EdgeTech sidescan sonar imagery, single-beam bathymetry, and chirp sub-bottom data in digital form along 148 km of tracks. From the two platforms data (all in digital form) were collected along 1640 km of survey lines.
Comments Original Center People field contained: Barry Irwin (boat captain); Charles Worley (electronics technician on RAFAEL); Emile Bergeron (electronics technician for IRIS); Thomas O'Brien (electronics technician for IRIS); Jane Denny (data processor); Brian Andrews (data processor); Dave Twichell (chief scientist). Project = Apalachicola Bay Habitat Mapping, Apalachicola Bay Habitat Mapping
25 feet
10 feet
Start Apalachicola, FL 2006-05-29
End Apalachicola, FL 2006-06-27
Days in the field 29
West -85.1667
East -84.75
North 29.78333
South 29.58333


384 Woods Hole Road
Quissett Campus
Woods Hole, MA02543-1598
(508) 548-8700
Principal investigators David C Twichell
Crew members
David C Twichell
Scientist, Staff
Thomas F O'Brien
Scientist, Staff
Jane F Denny
Scientist, Staff
Brian Andrews
Scientist, Staff
Emile Bergeron
Scientist, Staff
Charles R Worley
Scientist, Staff
Barry J Irwin
Scientist, Staff
Affiliate principal Lee Edmiston, Apalachicola Bay National Estuarine Research Reserve
Affiliate staff Lee Edmiston, Apalachicola National Estuarine Research Reserve; Bill Stevenson, NOAA Coastal Services Center

Data types and categories

Data category: Imagery, Location-Elevation, Seismics, Sonar
Data type: Photo, Navigation, Sub Bottom Profiler, Sidescan, Sound Velocity, Interferometric

Equipment used

Equipment Usage description Data types Datasets
EdgeTech 424 chirp sub-bottom profiler Sub Bottom Profiler 1
Digital camera Photo 1
Real Time Kinematic GPS Navigation (no data reported)
SEA SWATHplus-M 234 kHz Interferometric 1
Edgetech 4200 sidescan Sidescan 1
Klein 3000 Sidescan 1
Sensor - SVP Sound Velocity (no data reported)


Datasets produced in this activity

Dataset name Equipment Description Dataset contact
2006-001-FA-SE-002 EdgeTech 424 chirp sub-bottom profiler Autonomous Surface Vehicle (ASV) IRIS - Seismic profile data in EdgeTech FSSB-424 (4-24 kHz) Alice M. Orton
2006-001-FA-PH-001 Digital camera Deck photos of field activity operations Charles R Worley
Bathymetry GIS data SEA SWATHplus-M 234 kHz Linda P McCarthy
2006-001-FA-SO-002 Edgetech 4200 sidescan RAW IRIS DATA - EdgeTech 4200FS (100/400 kHz) collected from Autonomous Surface Vehicle (ASV) IRIS. Alice M. Orton
Sidescan mosaic Klein 3000 Linda P McCarthy


Samples collected during this field activity