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| R/V KILO MOANA is a general purpose Oceanographic Research Ship designed to operate in coastal and blue water areas. The unique SWATH hull form provides a comfortable, stable platform in high sea conditions. | |
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Inventory of Scientific Equipment 1. General Purpose Data Logging/Processing Computers
2. General Purpose Navigation Aids
3. General Purpose Peripherals to Navigation Aids & Computers
4. General Purpose Marine Geology and Geophysics Equipment
5. General Purpose Oceanographic Instrumentation
6. Additional Acoustic Equipment
7. Additional General Purpose Equipment
Additional access information is available at: http://www.soest.hawaii.edu/STAG/ Notes: Thermosalinograph (thsl) & CTD - Scientists can request additional calibrations of the CTD or thsl sensors (more frequently than the once/year/instrument funded within this proposal) at cost. Each vessel has a thsl system installed, but the newer thsl on the KM interfaces with the new external temperature sensor differently and so is not an exact swap for the older thsl on KOK. Therefore, the older spare thsl/ext temp pair is predominately a spare for the KOK thsl system. |
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Seafloor Mapping The Hawaii Mapping Research Group (HMRG) within SOEST is an organization of scientists, engineers, and graduate students involved in all aspects of seafloor mapping, including 1) the design, construction and operation of seafloor mapping instruments; 2) the development and maintenance of data acquisition and processing software for swath bathymetry and sidescan sonar systems; and 3) data processing to produce near real-time shipboard and enhanced post-cruise chart products for science users. Mapping instruments owned and operated by HMRG include:
In addition to HMRG's own sonars, the group also supports the acquisition, processing, charting and archiving of sonar data collected using other seafloor mapping systems: DSL-120 kHz sonar, a portable deep-towed phase difference sidescan bathymetry system operated by WHOI/DSOG. HMRG designed and built the sonar electronics, data acquisition software, and data processing software for this system, and has provided operational support for field programs since 2001. " Kilo Moana multibeam sonars: Simrad EM120 and EM1002 systems (see below) HMRG Shipboard staff. MR1 and IMI-30 surveys are staffed using 4 HMRG personnel: a party chief responsible for overall operations, data quality assurance and control, chart production, and communications with the chief scientist; an engineer responsible for the installation and maintenance of all mechanical, computer, and electronic systems; and two data processors who conduct near-real time data processing. IMI-30 operations require 24/7 watches to fly the deep-towed vehicle ~500 m above the seafloor. HMRG Data Products. Sidescan acoustic imagery and bathymetry mosaics for HMR1 and IMI-30 are generated in near-real time at sea, and are displayed on computer monitors, output to printers, and exported as digital data that can be imported into other display programs (such as the Generic Mapping Tools) or geographic information systems. HMRG processing and charting software is freely available to all NSF users, and the shipboard scientific party is encouraged to learn and participate in data processing at sea, and to install and use HMRG processing software at their research institutions. At the end of each survey, the chief scientist is provided all raw acoustic digital data, hardcopies of all bathymetry and sidescan charts, bathymetry soundings and sidescan amplitudes in GMT netCDF grd format and/or ASCII XYZ format, and chart data in several digital formats (PostScript, JPEG, PDF and/or HP-RTL plus others as mutually agreed). HMRG maintains a sonar data archive of all raw and processed data. The archive includes an online web site that contains all cruise reports, charts and data processing documentation, with password protection for surveys considered proprietary. Multibeam Kilo Moana is outfitted with two multibeam bathymetry systems, a Simrad EM120 sonar for deep water (300 - 11000 meters) mapping, and a Simrad EM1002 for shallow water mapping (10 - 800m). Her deep draft (26') and SWATH hull form exclude bubble sweep down beneath the transducers and result in high quality data even in high sea states. EM120 operates at 12 kHz (± 0.75 kHz) using independent frequency coded sectors that are actively steered at transmit to compensate for vessel pitch, roll and yaw, resulting in transmit beams oriented perpendicular to the survey line. Swath widths up to 150° (7.46 times water depth) are theoretically possible, although in practice a swath width of ~6 times water depth is expected in shallow water (200 to 2000 m), and a maximum swath width of 22 kilometers in deeper water. The transmit beamwidth is 1° in the fore/aft direction, and individual receive beams are 2° in the athwart ships direction. The system uses phase and amplitude bottom detection, with an accuracy of less than 0.2% of water depth across the entire swath. In addition to bathymetry, the EM120 acquires backscatter amplitude data that are used to produce seafloor acoustic imagery. EM1002 operates at frequencies near 95kHz, with the transmit beam divided into three independent sectors using different frequencies to mitigate the effects of acoustic multiples in the outer part of the swath. Swath widths up to 150° (7.46 times water depth) are theoretically possible, although in practice a swath width of ~6 times water depth is expected in shallow water (10 to 300 m), and a maximum swath width of 1800 meters in deeper water (300 to 800 m). The transmit beamwidth is 2° in the fore/aft direction, and individual receive beams are 2° in the athwartships direction. The system uses phase and amplitude bottom detection, with an accuracy of 0.2% of water depth over all but the outer beams of the swath. In addition to bathymetry, the EM1002 acquires backscatter amplitude data that are used to produce seafloor acoustic imagery. Each of the multibeam sonars is interfaced to a common TSS POS/MV 320 motion sensor to provide position/pitch/roll/yaw/heave data, plus 1 Hz system clock. Continuous sound velocity measurements of surface water are acquired using an Applied Micro Systems Smart SV mounted in an insulated tank. Sound speed profiles of the water column can be acquired in four different ways by using: 1) an Applied Microsystems Smart SV&P system; 2) a SeaBird CTD system, 3) XBTs and/or 4) an AML Smart Micro-CTD deployed on the Moving Vessel Profiler. Data from these systems are incorporated by the multibeam sonars to correct for ray bending and thereby to correctly position the bathymetry and acoustic imagery data. Hardware, software and data processing support for the multibeam systems is provided by the Hawaii Mapping Research Group (HMRG). The multibeam systems include software and computer hardware for survey planning and underway operations, as well as real-time gridding and display of bathymetry and acoustic imagery in the main computer lab. Sonar data acquisition is conducted on UNIX workstations using Simrad software. Sonar processing software includes Simrad's Neptune (bathymetry processing) and Poseidon (sonar imagery processing) packages, as well as HMRG sonar tools (bathymetry and backscatter processing and charting), the MB-System (bathymetry processing and charting), SAIC Saber (survey planning and area based bathymetry editing), Caris HIPS/SIPS (bathymetry and sidescan editing), ArcInfo (GIS and charting), and the Generic Mapping Tools (GMT) package for image manipulation and charting. These systems run on UNIX, linux and PC workstations devoted to multibeam processing and charting. Like other multibeam-equipped vessels in the UNOLS fleet, Kilo Moana collects swath bathymetry data every day at sea. HMRG, in conjunction with the STAG group, supports the multibeam hardware, software, and data acquisition/QA-QC/archiving. HMRG conducts shipboard training of SSF technicians who operate the multibeams on a regular basis. Scientists may also request additional Specialized Services for an HMRG mapping specialist to sail on their leg when swath bathymetry/imagery is critical to their cruise objectives and real-time decision making. In such cases, additional sound velocity profiling, shipboard data processing, seafloor imaging and charting will be available customized to their specifications. |
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ADCP (Acoustic Doppler Current Profiler) The Acoustic Doppler Current Profiler (ADCP) group at SOEST/UH is under the direction of Dr. Eric Firing. It performs the acquisition, archiving, and analysis of ADCP data for much of UNOLS, along with some NOAA, and Coast Guard vessels. This group is also involved in, or acts as consultant on, the development and testing of new ADCP systems. This group helped test and evaluate the RDI OS-75 (verses the older standard RDI NB-150) on the R/V Endeavor and is continuing to improve a general purpose Data Acquisition System (DAS) for the RDI OS-38 kHz instruments installed on R/V Kilo Moana, N.B. Palmer and L.M. Gould. Routine ADCP data collection efforts on the R/V KOK and R/V KM are included in the standard technician daily rate. The first routinely-operated shipboard ADCP was installed on the UH's R/V Moana Wave in late 1984. Since then, UH has been a leader in providing software for processing shipboard ADCP data (http://currents.soest.hawaii.edu/pub/codas3), and in processing and archiving shipboard ADCP data from the R/V Moana Wave and from other ships (http://currents.soest.hawaii.edu, http://ilikai.soest.hawaii.edu/sadcp/ ). UH personnel (Julia Hummon and Eric Firing) recently evaluated the shipboard ADCP systems on the new USCG research icebreaker HEALY (http://currents.soest.hawaii.edu/reports/healy_report/ ) and compared the RDI OS-78 to the RDI NB VM-150, using instruments installed on the R/V Endeavor (http://currents.soest.hawaii.edu/papers/os_eval_jtech.pdf ; Hummon and Firing, 2002). |
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University of Hawaii Marine Center 1 Sand Island Access Road, Honolulu, HI 96819 Phone (808) 847-2661, Fax (808) 848-5451 Toll Free 1-888-800-0460 email snug@soest.hawaii.edu |