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ME70 Water Column Sonar Data Collected During DY1706
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Acoustic-Trawl Survey of Walleye Pollock in the Gulf of Alaska (DY1706, ME70). The
Midwater Assessment and Conservation Engineering (MACE) program of NOAA Fisheries,
Alaska Fisheries Science Center (AFSC) conducted an acoustic-trawl (AT) stock assessment
survey along the Gulf of Alaska (GOA) shelf and associated bays during the late spring
and summer of 2017 to estimate the distribution and abundance of walleye pollock (Gadus
chalcogrammus). The survey was conducted 9 June-16 August aboard NOAA Ship Oscar Dyson,
a 64 meter stern trawler equipped with acoustic and oceanographic instrumentation.
The primary instrument for the survey was a Simrad EK60 split-beam echosounder system
utilizing five frequencies (18, 38, 70, 120, and 200 kHz). A Simrad ME70 multibeam
echosounder system was used during nighttime operations to evaluate the topography
of the seafloor in various habitats for select (typically untrawable) areas. The vessel
departed Kodiak, Alaska on 9 June and conducted the survey in three legs with all
port calls in Kodiak; the project was completed with the arrival of the vessel in
Kodiak on 16 August. Leg 1 of the project was conducted 9-28 June along the Gulf of
Alaska (GOA) shelf from the Islands of Four Mountains to Outer Shumagin Trough (12-18,
20-21, 22, and 26-27 June). Leg 1 survey areas included Sanak Trough (19 June), Morzhovoi
Bay (19-20 June), Pavlof Bay (21 June), Shumagin Islands area (23-25 and 26 June),
and Mitrofania area (25 June); the vessel transited to Kodiak 27-28 June. The vessel
departed Kodiak on 3 July to start leg 2 (3-28 July) and conducted survey work in
Shelikof Strait (3-8 and 10 July), Nakchamik area (9 July), Alitak Bay (12-13 July),
initial survey of Barnabas Trough (14-15 July), and GOA shelf (9-10, 10-12, and July).
The vessel returned to Kodiak on 15 July, ending leg 2, due to mechanical issues and
departed Kodak on 28 July to start leg 3. Leg 3 work included surveys of Chiniak Trough
(28-29 July), Barnabas Trough (31 July-1 August), Marmot Bay (3-4 August), and completion
of GOA shelf work (3 July; 2 and 4-14 August). The vessel transited to Kodiak Island
(14-15 August) and ended the project in Kodiak on 16 August. Sphere calibrations of
the EK60 and ME70 echosounder systems were conducted in Kalsin Bay, Kodiak Island,
Alaska on 9 June with an additional EK60 calibration conducted at the end of the project
on 16 August. Small surveys were conducted on select untrawlable habitat areas throughout
the project using a Simrad ME70 multibeam echosounder system.
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Applanix POS/MV 320 |
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POS/MV 320
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GCMD Data Center Keywords |
Global Change Master Directory (GCMD) Data Center Keywords |
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GCMD Instrument Keywords |
Global Change Master Directory (GCMD) Instrument Keywords |
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GCMD Location Keywords |
Global Change Master Directory (GCMD) Location Keywords |
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GCMD Science Keywords |
Global Change Master Directory (GCMD) Science Keywords |
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International DOI Foundation (IDF) |
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IHO Sea Areas |
International Hydrographic Organization (IHO) Sea Area ("Limits of Oceans and Seas"
publication S-23) |
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Knudsen CHIRP 3260 |
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CHIRP 3260
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Lockheed Martin Sippican eXpendable BathyThermograph/eXpendable Sound Velocimeter |
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Sippican XBT/XSV
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ME70 Water Column Sonar Data Collected During DY1706 |
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DY1706_ME70 doi:10.7289/V5C827J3 NCEI Metadata ID:gov.noaa.ngdc.mgg.wcd:DY1706_ME70
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NOAA National Centers for Environmental Information |
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NOAA Ship Oscar Dyson (R224) |
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Sea-Bird Electronics 32 Carousel Water Sampler |
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SBE 32
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Sea-Bird Electronics 49 FastCAT CTD Sensor |
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SBE 49 FastCAT
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Sea-Bird Electronics 911plus CTD |
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SBE 911plus CTD
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Simrad EK60 Echosounder |
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EK60
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Simrad ES60 Echosounder |
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ES60
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2 |
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Simrad ME70 Echosounder |
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ME70
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Vertical Datum: Unknown |
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World Geodetic System 1984 |
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http://knudseneng.com/products/chirp_3260 |
Chirp 3260 Echosounder |
Chirp 3260 Echosounder information |
information |
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http://maps.ngdc.noaa.gov/viewers/water_column_sonar/ |
Water Column Sonar Data Map Viewer |
Interactive map viewer to allow discovery and access to water column sonar data |
search |
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http://www.applanix.com/products/marine.html |
POS/MV 320 |
POS/MV 320 information |
information |
1 |
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http://www.seabird.com/products/WaterSamplers.htm |
SBE 32 |
SBE 32 Information |
information |
1 |
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http://www.seabird.com/products/profilers.htm |
SBE 49 FastCAT information |
Information on the SBE 49 FastCAT |
information |
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http://www.simrad.com/www/01/nokbg0240.nsf/AllWeb/A25148D8E9F00D0DC12570DE0050A7CB?OpenDocument |
Simrad EK60 Scientific echo sounder |
Information on the Simrad EK60 including file format documentation. |
information |
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https://epsg.org/crs_4326/WGS-84.html |
WGS 84 |
GML of World Geodetic System 1984 coordinate reference system. |
information |
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https://epsg.org/home.html |
European Petroleum Survey Group Geodetic Parameter Registry |
Registry that accesses the EPSG Geodetic Parameter Dataset, which is a structured
dataset of Coordinate Reference Systems and Coordinate Transformations. |
search |
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https://iho.int/ |
International Hydrographic Organization (IHO) Sea Area ("Limits of Oceans and Seas"
publication S-23) |
Publication of Sea Areas is maintained by IHO. |
information |
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https://www.earthdata.nasa.gov/learn/find-data/idn/gcmd-keywords |
Global Change Master Directory (GCMD) Keywords |
The information provided on this page seeks to define how the GCMD Keywords are structured,
used and accessed. It also provides information on how users can participate in the
further development of the keywords. |
information |
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https://www.lockheedmartin.com/content/dam/lockheed/data/ms2/documents/ocean/20050054_XBT_XSV_reader_page.pdf |
Lockheed Martin Sippican eXpendable BathyThermograph/eXpendable Sound Velocimeter |
Lockheed Martin Sippican eXpendable BathyThermograph/eXpendable Sound Velocimeter
information |
information |
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https://www.ncei.noaa.gov/contact |
NCEI Contact Information |
Information for contacts at NCEI. |
information |
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https://www.ncei.noaa.gov/waf/OER-Media/EXCTD/EX_CTD_Junction_Connector_Configuration_and_Voltage_Channel_Setup-2020_Field_Season-OER_%20NCEI_Version.pdf |
SBE 911plus CTD |
SBE 911plus CTD information |
information |
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https://www.ngdc.noaa.gov/mgg/wcd/ |
Water Column Sonar Data Archive Homepage |
Web page containing information on the water column sonar data archive. |
information |
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https://www.simrad.online/ek60/ref_english/default.htm |
Simrad EK60 information |
Information on the Simrad ES60 including file format documentation. |
information |