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Acoustic midwater data from expedition SAS, Arctic Ocean, 2021

Julia Muchowski, Serdar Sakinan, Alexandra Padilla, Caroline Bringensparr, Carlos Castro, Christian Stranne, Martin Jakobsson, Pauline Snoeijs Leijonmalm

This dataset contains acoustic midwater data from the Central Arctic Ocean, collected with a wideband Simrad EK80 sonar installed onboard icebreaker Oden.

The main purpose of collecting the current dataset was to investigate and map thermohaline stratification, turbulence, and suspended particles, as well as individual fish, fish schools, and zooplankton.

Data were collected from Swedish icebreaker Oden during the Synoptic Arctic Survey (SAS) expedition to the central Arctic Ocean, from late July to mid September 2021.

MarineHydrographyOceanographyAcoustic broadband dataSimrad EK80Arctic OceanSAS 2021 expeditionIcebreaker Oden

Download data

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wget -i https://bolin.su.se/data/data/oden-sas-2021-midwater-1.txt

You may need to download the software wget.

The command uses wget to download all files specified in a file list. A list of all files is available at https://bolin.su.se/data/data/oden-sas-2021-midwater-1.txt

Because of the large data volume (347 GiB, 10158 files), downloading all files can take can take long time and requires sufficent disk space on your system.

To download a selected subset, you can edit the file list and run wget with your revised list. Alternatively, you can select files for download in the file list below.

Data files

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Name

oden-sas-2021-midwater

Version

1

Citation

Julia Muchowski, Serdar Sakinan, Alexandra Padilla, Caroline Bringensparr, Carlos Castro, Christian Stranne, Martin Jakobsson, Pauline Snoeijs Leijonmalm (2023) Acoustic midwater data from expedition SAS, Arctic Ocean, 2021. Dataset version 1. Bolin Centre Database. https://doi.org/10.17043/oden-sas-2021-midwater-1

References

Snoeijs-Leijonmalm Pauline, the SAS-Oden Scientific Party (2022) Expedition Report SWEDARCTIC: Synoptic Arctic Survey 2021 with icebreaker Oden. Swedish Polar Research Secretariat, 300 pp, ISBN 978-91-519-3672-7

Data description

Acoustic broadband data are provided in three data formats; in original Kongsberg .raw format, in .idx format and in .xyz text files. Information about the data format can be found at Kongsberg.

The .xyz files include cruise track from NMEA and depth data from the echosounder.

The data are separated into two main components: calibration data and observational data. File names include date and time of data collection. Filenames GEO and EFICA mark different settings in which the system was run and that are described in detail in the expedition report in the section of WP1 section 8.3 and WP14 section 20.3. Files can be read and processed with Echoview or specialized code in Matlab/Python.

Comments

The data were acquired in summer 2021 from Swedish icebreaker (IB) Oden during the Synoptic Arctic Survey (SAS) 2021 expedition organized by the Swedish Polar Research Secretariat.

Acoustic broadband data were collected continuously along the cruise track with a wideband Simrad EK80 sonar (18 kHz center frequency), including a Simrad EK80 transceiver and an ES18 transducer.

Detailed information about the instrument can be found at Kongsberg.

Project

Synoptic Arctic Survey (SAS) 2021 expedition. This dataset is analyzed for fish and zooplankton abundances by EFICA within EU contract number CINEA/EMFF/2020/3.2.1/01/SC07/SI2.860330.

Publisher

Bolin Centre Database

License

Creative Commons Attribution 4.0 International License (CC BY 4.0)

First name

Christian

Last name or organisation

Stranne

Email address

christian.stranne@geo.su.se

Address

Department of Geological Sciences; Stockholm University

Postal code

SE-106 91

City

Stockholm

Country

Sweden

GCMD science keyword

Earth science > Oceans > Ocean acoustics

GCMD location

Ocean > Arctic Ocean

Dataset language

English

Begin date

2021-07-30

End date

2021-09-14

DOI

10.17043/oden-sas-2021-midwater-1

Time

2023-12-15T15:00:24.757138+00:00