This dataset contains long-term passive acoustic data (i.e. underwater sound recordings) collected from Krill Observational Mooring for Benthic Investigations (KOMBI) seafloor lander platforms and Mooring for Epipelagic Echo-sounding of Krill (MEEK) platforms. In 2021 an AAD Moored Acoustic Recorder was integrated into each of the three KOMBIs deployed during the TEMPO voyage. MARs contained a factory calibrated HTI hydrophone and AAD-calibrated electronics that recorded continuously producing hour-long wav files at 12 kHz sample rate 16-bit depth. The start date and time of each recording is embedded in the file name of each wav file (i.e. yyyy-mm-dd_HH-MM-SS). Passive acoustic recorders recorded low and mid-frequency sounds that may be used for investigation of physical environment (e.g. ice, wind, waves, earth), biological environment (e.g. animal vocalisations and sounds) and anthropogenic noise (e.g. sounds produced by ships, construction, and other human activities). These data are for recorder 002 - also see the metadata records for recorders 001 and 003.

This dataset contains long-term passive acoustic data (i.e. underwater sound recordings) collected from Krill Observational Mooring for Benthic Investigations (KOMBI) seafloor lander platforms and Mooring for Epipelagic Echo-sounding of Krill (MEEK) platforms. In 2021 an AAD Moored Acoustic Recorder was integrated into each of the three KOMBIs deployed during the TEMPO voyage. MARs contained a factory calibrated HTI hydrophone and AAD-calibrated electronics that recorded continuously producing hour-long wav files at 12 kHz sample rate 16-bit depth. The start date and time of each recording is embedded in the file name of each wav file (i.e. yyyy-mm-dd_HH-MM-SS). Passive acoustic recorders recorded low and mid-frequency sounds that may be used for investigation of physical environment (e.g. ice, wind, waves, earth), biological environment (e.g. animal vocalisations and sounds) and anthropogenic noise (e.g. sounds produced by ships, construction, and other human activities). Related dataset: AAS_4102_longTermAcousticRecordings

This dataset contains long-term passive acoustic data (i.e. underwater sound recordings) collected from Krill Observational Mooring for Benthic Investigations (KOMBI) seafloor lander platforms and Mooring for Epipelagic Echo-sounding of Krill (MEEK) platforms. In 2021 an AAD Moored Acoustic Recorder was integrated into each of the three KOMBIs deployed during the TEMPO voyage. MARs contained a factory calibrated HTI hydrophone and AAD-calibrated electronics that recorded continuously producing hour-long wav files at 12 kHz sample rate 16-bit depth. The start date and time of each recording is embedded in the file name of each wav file (i.e. yyyy-mm-dd_HH-MM-SS). Passive acoustic recorders recorded low and mid-frequency sounds that may be used for investigation of physical environment (e.g. ice, wind, waves, earth), biological environment (e.g. animal vocalisations and sounds) and anthropogenic noise (e.g. sounds produced by ships, construction, and other human activities). These data are for recorder 001 - also see the metadata records for recorders 002 and 003.

This dataset contains long-term passive acoustic data (i.e. underwater sound recordings) collected from Krill Observational Mooring for Benthic Investigations (KOMBI) seafloor lander platforms and Mooring for Epipelagic Echo-sounding of Krill (MEEK) platforms. In 2021 an AAD Moored Acoustic Recorder was integrated into each of the three KOMBIs deployed during the TEMPO voyage. MARs contained a factory calibrated HTI hydrophone and AAD-calibrated electronics that recorded continuously producing hour-long wav files at 12 kHz sample rate 16-bit depth. The start date and time of each recording is embedded in the file name of each wav file (i.e. yyyy-mm-dd_HH-MM-SS). Passive acoustic recorders recorded low and mid-frequency sounds that may be used for investigation of physical environment (e.g. ice, wind, waves, earth), biological environment (e.g. animal vocalisations and sounds) and anthropogenic noise (e.g. sounds produced by ships, construction, and other human activities). These data are for recorder 001 - also see the metadata records for recorders 002 and 003.

This dataset contains all data collected from Krill Observational Mooring for Benthic Investigations (KOMBI) seafloor lander platforms. Platforms were left on the seafloor for one year at depths on the continental shelf and near the shelf break. The minimum depth of a mooring is 350m to avoid collision with icebergs and the maximum depth is 1500m. Their dimensions are 1145 x 1145 x 1300 mm. Moorings are typically deployed in summer months from vessels. Active acoustic (ADCP and echosounder) data, passive acoustic data, CTD data and video camera footage are available from various instruments installed on the mooring. Data is collected at varying intervals depending on the instrument. Moorings sit on the seafloor and have been positioned at various sites near the continental slope off Mawson station, East Antarctica. Data collection began in 2021 and is ongoing.

The attached file details the workflow for the processing and analysis of active acoustic data (Simrad EK60; 12, 38, 120 and 200 kHz) collected from RSV Aurora Australis during the 2006 BROKE-West voyage. The attached file is in Echoview(R) (https://www.echoview.com/) version 8 format. The Echoview file is suitable for working with fisheries acoustics, i.e. water column backscatter, data collected using a Simrad EK60 and the file is set-up to read 38, 120 and 200 kHz split-beam data. The file has operators to remove acoustic noise, e.g. spikes and dropped pings, and operators for removing surface noise and seabed echoes. Echoes arising from krill are isolated using the ‘dB-difference’ method recommended by CCAMLR. The Echoview file is set-up to export the results of krill echo integration as both intervals and swarms. Full details of the method are available in Jarvis et al. (2010) and the krill swarms methods are described in Bestley et al. (2017).

The Australian Antarctic Division (AAD) has been collecting hydroacoustic data from its ocean going vessels for a number of years. This collection represents all hydroacoustic data gathered since 1990. The data are stored on the AAD Storage Area Network (SAN), and as such are only directly accessible by AAD personnel. Currently a very large volume of data are stored (greater than 2 TB), hence distribution of these data are logistically feasible really only for people with access to the SAN. As well as data, a large amount of documentation is provided - including methods used to collect these data, as well as any products resulting from these data (e.g. papers, reports, etc). In the past, these data have been collected under several ASAC projects, ASAC 357 (Hydroacoustic Determination of the Abundance and Distribution of Krill in the Region of Prydz Bay, Antarctica) and ASAC 1250 (Krill flux, acoustic methodology and penguin foraging - an integrated study) - ASAC_357 and ASAC_1250. As of 2019-12-19 the folders present in the acoustics data directory are: 1990-05_Aurora-Australis_HIMS 1991-01_Aurora-Australis_AAMBER2 1991-10_Aurora-Australis_WOCE91 1992-01_Aurora-Australis_Calibration_Great-Taylors-Bay 1993-01_Aurora-Australis_Calibration_Port-Arthur 1993-01_Aurora-Australis_KROCK 1993-02_Aurora-Australis_Calibration_Mawson 1993-03_Aurora-Australis_WOES-WORSE 1993-08_Aurora-Australis_Calibration_Port-Arthur 1993-08_Aurora-Australis_THIRST 1994-01_Aurora-Australis_SHAM 1994-12_Aurora-Australis_WOCET 1995-02_Aurora-Australis_Calibration_Casey 1995-07_Aurora-Australis_HI-HO_HI-HO 1996-01_Aurora-Australis_BROKE 1996-01_Aurora-Australis_Calibration_Port-Arthur 1996-02_Aurora-Australis_Calibration_Casey 1996-08_Aurora-Australis_WASTE 1997-01_Aurora-Australis_BRAD 1997-09_Aurora-Australis_ON-ICE 1997-09_Aurora-Australis_WANDER 1997-11_Aurora-Australis_SEXY 1997-11_Aurora-Australis_V3 1997-98-050_V5 1998-02_Aurora-Australis_SNARK 1998-04_Aurora-Australis_PICCIES 1998-07_Aurora-Australis_FIRE-and-ICE 1998-09_Aurora-Australis_V2 1998-10_Aurora-Australis_SEXYII 1999-01_Aurora-Australis_V5 1999-03_Aurora-Australis_STAY 1999-07_Aurora-Australis_Calibration_Port-Arthur 1999-07_Aurora-Australis_IDIOTS 1999-10_Aurora-Australis_V2 1999-11_Aurora-Australis_V4 2000-01_Aurora-Australis_V5 2000-02_Aurora-Australis_V6 2000-10_Aurora-Australis_Calibration_Port-Arthur 2000-11_Aurora-Australis_V1 2000-12_Aurora-Australis_KACTAS 2001-01_Aurora-Australis_Calibration_Mawson 2001-02_Aurora-Australis_Calibration_Davis 2001-10_Aurora-Australis_CLIVAR 2002-01_Aurora-Australis_LOSS 2002-09_Aurora-Australis_V1 2002-10_Aurora-Australis_Calibration_Port-Arthur 2003-01_Aurora-Australis_KAOS 2003-02_Aurora-Australis_Calibration_Mawson 2003-03_Aurora-Australis_Off-charter 2003-09_Aurora-Australis_ARISE 2003-09_Aurora-Australis_Calibration_NW-Bay 2003-11_Aurora-Australis_V2 2003-12_Aurora-Australis_HIPPIES 2004-02_Aurora-Australis_V7 2004-05_AAD_Lab-testing 2004-06_Aurora-Australis_Off-charter 2004-10 2004-10_Aurora-Australis_Calibration_NW-Bay 2004-10_Aurora-Australis_V1 2004-11_Aurora-Australis_V2 2004-11_Howard-Burton_NW-Bay-testing 2004-12_Aurora-Australis_ORCKA 2004-12_Howard-Burton_NW-Bay-testing 2005-02_Aurora-Australis_V5 2005-04_Howard-Burton_Bruny-Island-testing 2005-11_Aurora-Australis_Calibration_Port-Arthur 2005-11_Aurora-Australis_V2 2006-01_Aurora-Australis_BROKE-West 2006-02_Aurora-Australis_Calibration_Mawson 2006-03_Aurora-Australis_V5 2006-09_Aurora-Australis_V1 2006-12_Aurora-Australis_V2 2007-01_Aurora-Australis_SAZ-SENSE 2007-04_Aurora-Australis_V5 2007-08_Aurora-Australis_SIPEX 2011_10_20_Aurora_Calibration 200910_Aurora-Australis_BathymetryProcessing 201803_tankExperiments 20150102_Tangaroa 200708030_Aurora-Australis_V3_CEAMARC 200708040_Aurora-Australis_V4 200708060_Aurora-Australis_V6_CASO 200809000_Aurora-Australis_VTrials 200809010_Aurora-Australis_V1 200809020_Aurora-Australis_V2 200809030_Aurora-Australis_V3 200809050_Aurora-Australis_V5

Acoustic sounder charts were collected at six locations during Australian Antarctic Division Voyage 6 1994/95 (BANGSS) using the Kongsberg EA200 Echo Sounder on the Aurora Australis. BANGSS is an acronym for Big ANtarctic Geological and Seismic Survey. The voyage began on 6 February 1995 and finished on 12 April 1995. Each chart is labelled with information about when and where the data was collected: date, time, latitude and longitude. The charts provide a profile of the sea floor and have a time axis with numbers in the following format. the first two digits are the day the next two digits are the month the next five digits are the time (UTC) the last ten digits are the maximum value on the depth axis eg 2402005 360000000500 means 24 February 5:36 UTC and the maximum value on the depth axis is 500 metres See a Related URL for a link to information about the voyage including the voyage report.

This data set is a supplement to the R package, EchoviewR. EchoviewR is a free software package that acts as an interface between R and Echoview. It uses Component Object Model scripting to enable automated processing of active acoustic data. This data set contains the data necessary to run the vignette tutorials and package examples. The .raw files are acoustic data collected using an EK60 echosounder. They are a subset of the full acoustic data collected on the Krill Acoustic and Oceanographic Survey (KAOS) off Antarctica in the summer of 2003. The .EV template file was created using Echoview v6.1. The .ecs calibration file, .evl line object file and .evr region files are for use with this template. The region files designate off transect regions. The three pdf vignettes contain examples of reading data using EchoviewR, conducting school detection and running biomass estimation of Antarctic Krill. These data are intended only as a supplement to demonstrate the use of EchoviewR. This data is a subset of the KAOS data and as such, must NOT be used to formally estimate krill biomass. These data are a subset of data described in the metadata record at the provided URL.

This dataset contains long-term underwater acoustic recordings made under Australian Antarctic Science Projects 4101 and 4102, and the International Whaling Commission’s Southern Ocean Research Partnership (IWC-SORP) Southern Ocean Hydrophone Network (SOHN). Calibrated measurements of sound pressure were made at several sites across several years using custom moored acoustic recorders (MARs) designed and manufactured by the Science Technical Support group of the Australian Antarctic Division. These moored acoustic recorders were designed to operate for year-long, deep-water, Antarctic deployments. Each moored acoustic recorder included a factory calibrated HTI 90-U hydrophone and workshop-calibrated frontend electronics (hydrophone preamplifier, bandpass filter, and analog-digital converter), and used solid state digital storage (SDHC) to reduce power consumption and mechanical self-noise (e.g. from hard-drives with motors and rotating disks). Electronics were placed in a glass instrumentation sphere rated to a depth of 6000 m, and the sphere was attached to a short mooring with nylon straps to decouple recorder and hydrophone from sea-bed. The hydrophone was mounted above the glass sphere with elastic connections to the mooring frame to reduce mechanical self-noise from movement of the hydrophone. The target noise floor of each recorder was below that expected for a quiet ocean at sea state zero. The analog-digital converter, based on an AD7683B chip, provides 100 dB of spurious free dynamic range, but a total signal-to-noise and distortion of 86 dB which yields 14 effective bits of dynamic range at a 1 kHz input frequency. The data for each recording site comprise a folder of 16-bit WAV audio files recorded at a nominal sample rate of 12 kHz. The names of each WAV file correspond to a deployment code followed by the start time (in UTC) of the file as determined by the microprocessor’s real-time clock e.g. 201_2013-12-25_13-00-00.wav would correspond to a wav file with deployment code 201 that starts at 1 pm on December 25th 2013 (UTC). Recording locations were chosen to correspond to sites used during AAS Project 2683. These sites were along the resupply routes for Australia’s Antarctic stations, and typically there was only one opportunity to recover and redeploy MARs each year.