Table 10.1
Summary of the survey platforms used for surveying the Grand Bahama Bank and Miami Terrace study areas
Survey platform
Vessel
speed
Sensor (frequency)
Swath width/resolution/sampling Output
Objective
Hull-mounted Multi-beam
(Depth *800
m)
10 kts Simrad EM 120 Multi-beam
(12 kHz)
3500 m width; 50 m bin-size
DEM
Reconnaissance mapping
Hull-mounted multi-beam
(depth *800
m)
4–5 kts Simrad EM 1002 multi-beam
(95 kHz)
1000 m width; 20 m bin-size
DEM and
acoustic
image
Reconnaissance mapping
C-Surveyor-II AUV (40 m
above seabed)
3.8 kts Simrad EM 2000 multi-beam
(200 kHz)
300 m width (100 m overlap);
3 m bin-size
DEM and
acoustic
image
High-resolution mapping
and spatial analyses
Edgetech side-scan sonar
(120 kHz)
400 m width (200 m overlap);
0.5 m bin-size
Acoustic image Habitat classification map
Edgetech chirp profiler (3 kHz) 200 m line spacing
Sub-bottom
profiles
Sedimentation rates and
echo-character
ADCP
Sampling every second
Current
velocity,
direction
AUV positioning; bottom
current
FastCAT ConductivityTemperature-Salinity (CTD)
Sampling every second
Temperature,
Salinity
Water mass property
Johnson-Sea-Link II
Submersible
\1
kts Video camera, manipulatorarm
Maximum positioning error of
9.6 m (at 500 m depth)*
Video, bottom
sampling
Ground-truthing
a
As in Reed et al. 2006
262
T. B. S. Correa et al.