Pacific Islands Benthic Habitat Mapping Center (PIBHMC), Coral Reef Ecosystem Division (CRED), Pacific Islands Fisheries Science Center (PIFSC), National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration (NOAA)
20060907
2006 Reson 8101ER Multibeam Sonar Data from Cruise
AHI-06-02 - American Samoa
Generic Sensor Format (GSF) digital data
http://www.soest.hawaii.edu/pibhmc/
Reson 8101ER multibeam Data were collected in
10-13 Feb. and 18 Feb-13 Mar 2006 aboard NOAA Survey
Launch Acoustic Habitat Investigator (AHI) in America
Samoa at Swains Island, Tutuila and Rose Atoll during
cruise AHI-06-02. These multibeam data were collected
using SAIC ISS-2000 software in the Generic Sensor Format
and processed using SABER software. Sound velocity
corrections from a Seabird SBE19 CTD sensor and motion
corrections from a POS-MV vertical reference were applied
to the data in real time.
Predicted tides were applied to the data in real time: at
Tutuila, Pago Pago (170000) predicted tides were used
with no corrections; at Rose Atoll, Pago Pago tides were
used with +0.1 hr time correction and a range ratio of 0.92;
and at Swains Island, Pago Pago predicted tides were used
with a -0.5 hr time correction and a 1.12 range ratio.
Horizontal accuracy is 20m (no differential GPS correctors
applied), vertical accuracy is depth dependent (~1% of
water depth), WGS84 datum. These data are not to be used
for navigation. Depths mapped range from 1 - 300 m. The
AHI was deployed from the NOAA Ship Hi'ialakai and
concurrent mapping was done using Simrad EM300 and EM3002D
sonars aboard the ship; metadata for HI-06-02 are
submitted separately.
The data were collected in support of Coral Reef
Conservation Program goals to map all shallow (0-30 m)coral
reefs in US Pacific waters and priority moderate (> 30 m)
depth areas by 2009. The data are being used to provide
bathymetric and backscatter data for previously unmapped
areas; in support of ecosystem management requirements for
benthic habitat mapping and location of Essential Fish
Habitat; and to study the geologic features of the area.
Data were collected aboard the R/V AHI (Acoustic Habitat
Investigator), a 8 m (25') survey launch owned and operated
by the NOAA Pacific Islands Fisheries Science Center in
Honolulu, HI. The R/V AHI's survey sensors include a 240
kHz RESON 8101-ER sonar which measures bathymetry and
acoustic backscatter imagery, a TSS/Applanix POS/MV Model
320 which measures time, position, velocity, attitude and
heading, and a Seabird SBE 19 CTD used to measure sound
velocity profiles.
The AHI's equipment serial numbers, software versions and
sensor configuration settings are as follows:
RESON 8101-ER multibeam echosounder
Transducer serial #: 201004
Firmware, dry: 8101-2.07-2D4D
Firmware, wet: 8101-1.06-2F6B
R/V AHI POS/MV Model 320, version 3
PCS serial #: 474
IMU serial #: 203
Controller software: v 2.1 and 2.21*
PCS Firmware: 2.16
Seabird SBE19 CTD:
Serial #: 3029
*The AHI's POS/MV was moved from the launch to the ship
each day during part of this cruise. On the evening of Feb
17th (local time) the ship's POS/MV started continually
rebooting. With assistance from Applanix we determined that
the problem was isolated to the PCS, the rack-mounted
controller box. We moved the PCS from the AHI to the ship
and were able to continue to survey. Because the IMU was
not moved no recalibration was required. The PCS was moved
between the ship and the AHI daily for several days,
allowing the ship to survey at night and the AHI to survey
during the day. The major aspect of the move was that the
power supply for the IMU is not compatible between the ship
and the AHI and had to be changed out each time the unit
was moved. The settings for each vessel's configuration
were saved to disk and reloaded at the beginning of each
session. This continued until Feb 24th when the ship's
replacement unit arrived. Another problem that came to
light near this same time was that some times the POS/MV
would provide two different date stamps for the data, the
time reported on the screen did not agree with the one
reported out the Ethernet data stream. When this was
noticed on Feb 26th new firmware (v 2.21) was loaded
immediately and corrected the problem.
R/V AHI Lever Arm Distances and Alignment Offsets: The R/V
AHI Reference Point (RP) is defined to be the intersection
of the vessel's centerline, the cabin deck and the bulkhead
immediately aft of the transducer. This is marked by a
punch in the deck weld at that location. Positive X means
the point is forward of the RP, positive Y means the point
is to starboard of the RP, positive Z means the point is
below the RP. The loaded waterline is defined as the
intersection of the vessel's performance wing with the hull
at the transom.
POS/MV Settings:
RP to IMU, m 0.80 0.00 0.08
RP to Primary GPS(port),m 0.85 -0.50 -2.29
RP to Vessel, m 0.16 0.00 0.77
IMU w.r.t. Ref. Frame, deg 0.00 0.00 0.00
RP to Heave lever arm, m -0.67 0.00 0.00
RP to Sensor 1(MB transducer), m 0.16 0.00 0.77
RP to Sensor 2 0 0 0
Sensor 1 rotation Ref. Frame, deg 0 0 0
Sensor 2 rotation Ref. Frame, deg 0 0 0
Antenna Baseline Distance: 1.229
ISS2000 Settings for RESON DTC:
Roll Bias, deg 0.15
Pitch Bias, deg 0.025
Gyro Bias, deg 0.0
Transducer depth, m 0.62
Resource Description: Reson 8101ER Multibeam Sonar Data from
Cruise AHI-06-02 (R/V AHI)
20060210
20060310
ground condition
As needed
-171.21919
-168.057488
-10.935262
-14.633769
NCEI Geoportal FilterCoRIS_Metadata
CRCP Project
Benthic Habitat Mapping and Characterization - American Samoa and PRIA
1084
CoRIS Discovery Thesaurus
Geographic Information > Bathymetry
ISO 19115 Topic Category
elevation
006
CoRIS Theme Thesaurus
EARTH SCIENCE > Oceans > Bathymetry/Seafloor Topography > Bathymetry
None
Bathymetry
Multibeam sonar
None
Swains Island
Tutuila
Rose Atoll
American Samoa
Islands
CoRIS Place Thesaurus
OCEAN BASIN > Pacific Ocean > American Samoa > Tutuila Island (14S170W0016)
COUNTRY/TERRITORY > United States of America > American Samoa > American Samoa > Tutuila Island (14S170W0016)
OCEAN BASIN > Pacific Ocean > American Samoa > American Samoa (14S170W0000)
COUNTRY/TERRITORY > United States of America > American Samoa > American Samoa > American Samoa (14S170W0000)
OCEAN BASIN > Pacific Ocean > American Samoa > Rose Atoll (14S168W0001)
COUNTRY/TERRITORY > United States of America > American Samoa > American Samoa > Rose Atoll (14S168W0001)
OCEAN BASIN > Pacific Ocean > American Samoa > Swains Atoll (11S171W0001)
COUNTRY/TERRITORY > United States of America > American Samoa > American Samoa > Swains Atoll (11S171W0001)
CoRIS Region
AmSam
None.
These data are NOT TO BE USED FOR NAVIGATION
Pacific Islands Benthic Habitat Mapping Center (PIBHMC), Coral Reef Ecosystem Division (CRED), Pacific Islands Fisheries Science Center (PIFSC), National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration (NOAA)
mailing and physical address
NOAA IRC
NMFS/PIFSC/CRED
1845 WASP Blvd., Building 176
Honolulu
HI
96818
808 725-5360
808 725-5429
nmfs.pic.credinfo@noaa.gov
e-mail preferred
Joyce E. Miller Coral Reef Ecosystem Division,
NOAA Pacific Islands Fisheries Science Center
Not applicable
Unclassified
Not applicable
Generic Sensor Format multibeam
data processed with SAIC SABER processing software on LINUX
operating system computers
Horizontal accuracy is ~20 m as
data were collected using GPS with no differential
corrections. Vertical accuracy of multibeam data is
estimated at 1% of water depth; predicted tidal corrections
were applied.
These data are believed to be
logically consistent though no tests were performed
Varies
Variable
20
Multibeam
sonar data. No DGPS corrections applied; 20 m accuracy
Variable
1
Accuracy
varies with water depth. Multibeam data vertical
accuracy is ~1% of water depth. Predicted tides were
applied to the data in real time: at Tutuila, Pago Pago
(170000) predicted tides were used with no corrections;
at Rose Atoll, Pago Pago tides were used with +0.1 hr
time correction and a range ratio of 0.92; and at Swains
Island, Pago Pago predicted tides were used with a -0.5
phr time correction and a 1.12 range ratio.
Joyce E. Miller,
Coral Reef Ecosystem Division, NOAA Pacific Islands
Fisheries Science Center
20060907
Reson 8101ER multibeam bathymetric data
Digital data
2006
ground condition
Reson 8101ER
Reson 8101ER (240 kHz) bathymetry and
imagery data were collected in depths of ~10-250 m.
None
Unknown
Pacific Islands Benthic Habitat Mapping Center (PIBHMC), Coral Reef Ecosystem Division (CRED), Pacific Islands Fisheries Science Center (PIFSC), National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration (NOAA)
mailing and physical address
NOAA IRC
NMFS/PIFSC/CRED
1845 WASP Blvd., Building 176
Honolulu
HI
96818
808 725-5360
808 725-5429
nmfs.pic.credinfo@noaa.gov
e-mail preferred
Downloadable Data
These data are not to be used for
navigational purposes. NOAA makes no warranty regarding these
data, expressed or implied, nor does the fact of distribution
constitute such a warranty. NOAA cannot assume liability for
any damages caused by any errors or omissions in these data,
nor as a result of the failure of these data to function on a
particular system.
Please contact the Distributor (see above) for distribution options
These data are also archived through NOAA's National Geophysical Data Center at http://www.ngdc.noaa.gov/mgg/bathymetry/multibeam.html
Data Format - Generic Sensor Format, as described in http://www.ldeo.columbia.edu/res/pi/MB-System/formatdoc/gsf_spec.pdf
20200329
20110318
Pacific Islands Benthic Habitat Mapping Center (PIBHMC), Coral Reef Ecosystem Division (CRED), Pacific Islands Fisheries Science Center (PIFSC), National Marine Fisheries Service (NMFS), National Oceanic and Atmospheric Administration (NOAA)
mailing and physical address
NOAA IRC
NMFS/PIFSC/CRED
1845 WASP Blvd., Building 176
Honolulu
HI
96818
808 725-5360
808 725-5429
nmfs.pic.credinfo@noaa.gov
e-mail preferred
FGDC Content Standards for Digital
Geospatial Metadata
FGDC-STD-001-1998
Universal Time
20090526035838
None
20060210
20060310
https://www.coris.noaa.gov/metadata/records/html/cred_ahi0602_mb_metadata.html
2728