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39 results for “Echosounder”
200 kHz pre-processed echosounder data collected on the Antarctic Circumnavigation Expedition during the austral summer of 2016/2017.
<p><strong>Dataset abstract </strong></p> <p>These data consist of pre-processed echosounder observations in the Southern Ocean collected during the Antarctic Circumnavigation Expedition (ACE; Leg2-Leg3) using an EK60 GPT operating at 200 kHz. The instrument was calibrated at South Georgia during the expedition (Leg 3) and corrections were applied prior to calculation of the volume backscattering strength (Sv). The signal-to-noise ratio (SNR) was analysed and was deemed very poor at depths greater than 100 m. Therefore, only data collected between the transducer depth (8.4 m) and 100 m were archived.</p> <p><strong>Dataset contents</strong></p> <ul> <li>ACE-DYYYYMMDD-THHMMSS.csv, data files, comma-separated values</li> <li>data_file_header.txt, metadata, text</li> <li>README.txt, metadata, text</li> </ul> <p><strong>Dataset license</strong></p> <p>This 200 kHz pre-processed echosounder data collected on ACE is made available under the Creative Commons Attribution 4.0 International License (CC BY 4.0) whose full text can be found at https://creativecommons.org/licenses/by/4.0/</p>
DGPS and Echosounder data for Glass Window Bridge, Eleuthera, Bahamas.
<p>Bathymetric and Differential GPS data collected on Eleuthera, Bahamas as collected by survey instruments. These data are used in Rovere et al., 2017 (PNAS, see references).</p> <p><strong>Bathymetry: </strong>data was acquired with an MX Biosonics Aquatic Habitat Echosounder (Depth accuracy 1.7cm±0.2% of depth; DGPS positional accuracy: <3m, 95%) mounted on a small boat. No tidal correction has been applied. No IMU corrections to take into account wave motion were applied.</p> <p><strong>GPS: </strong>GPS points and lines were measured with a Trimble Pro XRT GPS receiving real-time Omnistar HP corrections (2-sigma 95% accuracy of 10cm). Heights are referred to the ITRF Ellipsoid.</p> <p>All data is in .shp format.</p>
Split-beam echosounder data from keel-mounted EK60 during PolarFront 2023-08 cruise
<p><strong>PolarFront 2023-08 EK60</strong></p><p>The keel-mounted Simrad EK60® split-beam echosounder continuously recorded hydroacoustic data at 18, 38, and 120 kHz. The ping rate was set to 1.5 seconds and pulse length to 1,024 µs. </p>
Submerged aquatic vegetation biomass from the Saint Lawrence River (2006-2016) to compare estimation from quadrat-diver technique to rake collection and echosounding
<p>Here we provide 4 datasets that describes 1) the comparison between quadrat and rake collected biomass (QR), 2) the comparison of rake biomass and biovolume, a biomass proxy derived from echosounding (RE), 3) a validation dataset that confronts quadrat measurements to quadrat prediction measured from echosounding using two intercalibration equations (derived from QR and RE datasets), and 4) a whole-system biomass estimation comparing biomass predicted from echosounding and from rake.</p> <p>Original data comes from the Saint Lawrence River, mainly from Lac Saint-Pierre, but for the QR dataset also from Lac Saint-François and Lac Saint-Louis. Data from the QR (2006-2009) and validation dataset (2016) were collected by Christiane Hudon, Environment and Climate Change Canada, while the RE dataset and part of the validation dataset were collected as part of a project led by the Groupe de recherche interuniversitaire en limnologie (GRIL, 2012-2015) and by Morgan Botrel Ph.D. candidate (2016-2017, Université de Montréal). Data were created for an article on a method to estimate SAV biomass, led by Morgan Botrel and supervisor Roxane Maranger, with co-supervisor Christiane Hudon and Pascale Biron.</p> <p>For the second version, the data is more clearly organized in the four categories mentioned above. Additionally, revised prediction equations were applied which modifies results used in the validation and whole-system datasets (dataset 2 and 4). Equations are presented in the associated publication:</p> <p>Botrel, M., C. Hudon, P.M. Biron, R. Maranger. Combining quadrat, rake and echosounding to estimate submerged aquatic vegetation biomass at the ecosystem scale. Limnology & Oceanography: Methods. Accepted (as of 2023/02/08)</p>
12.5 kHz raw echosounder data collected on the Antarctic Circumnavigation Expedition during the austral summer of 2016/2017.
<p><strong>Dataset abstract</strong></p> <p>These data consist of raw echosounder observations collected during ACE (Leg1-Leg3) using an EK80 WBT operating at 12.5 kHz. The instrument was calibrated at South Georgia during the expedition (Leg 3) and corrections were applied prior to calculation of the volume backscattering strength (Sv). The signal-to-noise ratio (SNR) was analysed and was deemed very poor at depths greater than 1000 m. Therefore, only data collected between the transducer depth (8.4 m) and 1000 m were archived. Sv values within this depth range that had poor SNRs (<2) were deemed to be bad data and set to a value of NA. Observations were made using a pulse duration of 16.384 ms (c. 24 m) and are therefore not suitable for fine-scale studies (e.g. analysis of krill swarms). They are more suited to studies relating to large-scale biological features such as deep scattering layers.</p> <p><strong>Dataset contents</strong></p> <ul> <li>ACE-DYYYYMMDD-THHMMSS.csv, data files, comma-separated values</li> <li>data_file_header.txt, metadata, text</li> <li>README.txt, metadata, text</li> </ul>
Рис. 4. РаспреΑеΛение рыб в верхнем и нижнем бьефе в периоΑ осенней миграции 2018 г. (а) и верхнем бьефе в весеннюю миграцию 2019 г. (б). Точками показаны места фиксации рыб эхоΛотом Fig. 4. Distribution of fish upstream and downstream of the reservoir during the autumn migration of 2018 (а) and upstream of the reservoir during the spring migration of 2019 (b). Points indicate the locations where fish were registered by echosounder in Dynamics and current status of the Amazar River ichthyofauna after the construction of the PPM «Polyarnaya» hydroelectric complex
Рис. 4. РаспреΑеΛение рыб в верхнем и нижнем бьефе в периоΑ осенней миграции 2018 г. (а) и верхнем бьефе в весеннюю миграцию 2019 г. (б). Точками показаны места фиксации рыб эхоΛотом Fig. 4. Distribution of fish upstream and downstream of the reservoir during the autumn migration of 2018 (а) and upstream of the reservoir during the spring migration of 2019 (b). Points indicate the locations where fish were registered by echosounder
Split-beam echosounder data from keel-mounted EK60 during PolarFront 2022-05 cruise
<p>Cruise report:</p> <blockquote>Hull-mounted EK60 The keel-mounted Simrad EK60® split-beam echosounder continuously recorded hydroacoustic data at 18, 38, and 120 kHz. The ping rate was set to 1.5 seconds and pulse length to 1,024 µs. The echosounder was calibrated annually using the standard sphere method (Demer et al., 2015). A Seabird 911 Plus CTD® recorded temperature and conductivity regularly throughout the transects from which we could derive profiles of temperature and salinity, sound speed (Mackenzie, 1981), and the coefficient of absorption at each frequency (François and Garrison, 1982).</blockquote>
200 kHz raw echosounder data collected on the Antarctic Circumnavigation Expedition during the austral summer of 2016/2017.
<p><strong>Dataset abstract</strong></p> <p>These data consist of raw echosounder observations in the Southern Ocean collected during the Antarctic Circumnavigation Expedition (ACE; legs 2, 3) and through the Atlantic Ocean (ACE leg 4) using an EK60 GPT operating at 200 kHz. The instrument was calibrated at South Georgia during the expedition (leg 3).</p> <p><strong>Dataset contents</strong></p> <ul> <li>*DYYYYMMDD-THHMMSS.idx, auxiliary files, binary</li> <li>*DYYYYMMDD-THHMMSS.raw, data files, binary</li> <li>*DYYYYMMDD-THHMMSS.bot, auxiliary files, binary</li> <li>README.txt, metadata, text</li> </ul> <p><strong>Dataset license </strong></p> <p>These data consist of raw echosounder observations in the Southern Ocean collected during the Antarctic Circumnavigation Expedition (ACE; legs 2, 3) and through the Atlantic Ocean (ACE leg 4) using an EK60 GPT operating at 200 kHz. The instrument was calibrated at South Georgia during the expedition (leg 3).</p>
Sailbuoy Iskant PolarFront EK80 echosounder data [4/12] 2021-06-01 to 2021-06-05
<p>This dataset is part 4/12 of a collection and contains ~43.2 GB of data in 480 files, captured between 2021-06-01 and 2021-06-05.</p> <p>See <a href="10.5281/zenodo.7463346">Wideband acoustic EK80 transceiver datasets and GPS track of autonomous sailbuoy in the Barents Sea for the PolarFront project May to July 2021</a> for more information.</p>
Split-beam echosounder data from keel-mounted EK60 during ARCTOS Polar Front 2021-05 cruise
<p><strong>PolarFront 2021-05 ship EK60</strong></p><p>Hydroacoustic data collected from 2021-05-14T10:43:37Z to 2021-05-21T08:18:33Z along the cruise transects from the three available frequencies installed on Helmer Hanssen (Simrad EK60, 18 kHz, 38 kHz and 120 kHz).</p><p>For further details, see <a href="https://doi.org/10.5281/zenodo.7384075">cruise report</a> section 5.2.</p>
Sailbuoy Iskant PolarFront EK80 echosounder data [6/12] 2021-06-11/2021-06-15
<p>This dataset is part 6/12 of a collection and contains ~43.2 GB of data in 480 files, captured between 2021-06-11 and 2021-06-15.</p> <p>See <a href="10.5281/zenodo.7463346">Wideband acoustic EK80 transceiver datasets and GPS track of autonomous sailbuoy in the Barents Sea for the PolarFront project May to July 2021</a> for more information.</p>
Raw high-frequency EK80 echosounder datasets from autonomous sailbuoy campaign in Lofoten/Vesterålen 2018
<p>In 2018, the autonomous surface vehicle sailbuoy <a href="http://sailbuoy.no/13-news/74-introducing-the-sb-echo">Echo</a> surveyed the coastal shelf surrounding the Lofoten and Vesterålen islands (aka. LoVe), Norway. The Echo was equipped with a <a href="https://www.kongsberg.com/maritime/products/ocean-science/ocean-science/es_scientific/transducers-for-scientific-echo-sounders/simrad-wbt-mini">EK80</a> high-frequency echosounder, and over the course of 131 field days, 8791 <code>.raw</code> EK80 echosounder files were captured, with a total size of ~750 GB.</p> <p>In 2022, Akvaplan-niva published the complete, raw data from Echo's LoVe 2018 campaign in their research archive on <a href="https://zenodo.org/communities/akvaplan-niva/search?page=1&size=20&q=sailbuoy%20ek80%202018">Zenodo</a>.</p> <p>EK80 datasets from Sailbuoy Echo in LoVe 2018:</p> <ul> <li><a href="https://doi.org/10.5281/zenodo.6839067">2018-03-08/2018-03-12</a></li> <li><a href="https://doi.org/10.5281/zenodo.6839167">2018-03-13/2018-03-17</a></li> <li><a href="https://doi.org/10.5281/zenodo.6839191">2018-03-18/2018-04-01</a></li> <li><a href="https://doi.org/10.5281/zenodo.6839345">2018-04-02/2018-04-05</a></li> <li><a href="https://doi.org/10.5281/zenodo.6839512">2018-04-06/2018-04-26</a></li> <li><a href="https://doi.org/10.5281/zenodo.6839520">2018-04-27/2018-05-03</a></li> <li><a href="https://doi.org/10.5281/zenodo.6839542">2018-05-04/2018-05-30</a></li> <li><a href="https://doi.org/10.5281/zenodo.6839550">2018-05-31/2018-06-02</a></li> <li><a href="https://doi.org/10.5281/zenodo.6834583">2018-06-03/2018-06-06</a></li> <li><a href="https://doi.org/10.5281/zenodo.6839566">2018-06-07/2018-06-09</a></li> <li><a href="https://doi.org/10.5281/zenodo.6839576">2018-06-10/2018-06-12</a></li> <li><a href="https://doi.org/10.5281/zenodo.6787552">2018-06-13/2018-06-17</a></li> <li><a href="https://doi.org/10.5281/zenodo.6786850">2018-06-18/2018-06-30</a></li> <li><a href="https://doi.org/10.5281/zenodo.6822565">2018-07-01/2018-07-11</a></li> <li><a href="https://doi.org/10.5281/zenodo.6839593">2018-07-12/2018-07-17</a></li> <li><a href="https://doi.org/10.5281/zenodo.6839740">2018-07-18/2018-07-28</a></li> <li><a href="https://doi.org/10.5281/zenodo.6839756">2018-07-29/2018-08-22</a></li> </ul> <p>See also: <a href="https://doi.org/10.5281/zenodo.6786918">Real-time oceanography captured by autonomous sailbuoy in Lofoten/Vesterålen 2018</a></p> <p>The sailbuoy Echo 2018 LoVe campaign was part of the research project<br> <a href="https://prosjektbanken.forskningsradet.no/en/project/FORISS/269188">Unmanned ocean vehicles, a flexible and cost-efficient offshore monitoring and data management approach</a></p>
Raw EK80 echosounder data of northern shrimp collected by wideband autonomous transceiver in mesocosm AZKABAN 2023-01-26
<p>Broadband active acoustic measurements using two echosounders (90-170 kHz and 185-255 kHz) of northern shrimp (Pandalus borealis) collected in Krossfjorden in a mesocosm (2m x 2m x 3m). The experiment was completed from the wharf in Ny-Ålesund. The fileset includes measurements from the experiment of January 26, 2023 and CTD data. Calibration data is available <a href="https://doi.org/10.5281/zenodo.8289670">https://doi.org/10.5281/zenodo.8289670</a>.</p>
Echosounder derived metrics from small-scale coastal surveys
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Raw EK80 high-frequency echosounder data collected by autonomous sailbuoy in Lofoten/Vesterålen 2018-06-18/2018-06-30
<p>Collected "2018-06-18T00:01:09.000Z/2018-06-30T23:01:24.000Z". Please notice there are no data on 19, 22, and 23 June.</p> <p>For vehicle positions, other sensor observations, and additional metadata, please visit:<br> <a href="https://doi.org/10.5281/zenodo.6786919">https://doi.org/10.5281/zenodo.6786919</a></p>
Raw EK80 high-frequency echosounder data collected by autonomous sailbuoy in Lofoten/Vesterålen 2018-06-13/2018-06-17
<p>For vehicle positions, other sensor observations, and additional metadata, please visit:<br> <a href="https://doi.org/10.5281/zenodo.6786919">https://doi.org/10.5281/zenodo.6786919</a></p>
Raw EK80 echosounder data of zooplankton collected by wideband autonomous transceiver in mesocosm AZKABAN 2022-01-17
<p>Broadband active acoustic measurements using an echosounder (185 to 255 kHz) of a mix of zooplankton collected in Kongsfjorden in a mesocosm (2m x 2m x 3m). The experiment was completed from the wharf in Ny-Ålesund. The fileset includes calibrations of the transducer (ES200-7CDK-split; Kongsberg Maritime AS) with the wideband Autonomous Transceiver (Kongsberg Maritime AS) from January 19th, 2022.</p>
Raw EK80 echosounder data of polar cod collected by wideband autonomous transceiver in mesocosm AZKABAN 2023-01-19 and 24
<p>Broadband active acoustic measurements using two echosounders (90-170 kHz and 185-255 kHz) of polar cod (<em>Boreogadus saida</em>) collected in Billefjorden in a mesocosm (2m x 2m x 8m). The experiment was completed from the wharf in Ny-Ålesund. The fileset includes measurements from the experiments of January 19 and 24, 2023 and includes CTD data. Calibration data is available <a href="https://doi.org/10.5281/zenodo.8289670">https://doi.org/10.5281/zenodo.8289670</a></p>
Raw EK80 echosounder data of Atlantic cod collected by wideband autonomous transceiver in mesocosm AZKABAN 2023-01-20
<p>Broadband active acoustic measurements using two echosounders (90-170 kHz and 185-255 kHz) of Atlantic cod (Gadus morhua) collected in Kongsfjorden and Krossfjorden in a mesocosm (2m x 2m x 8m). The experiment was completed from the wharf in Ny-Ålesund. The fileset includes measurements from the experiment of January 20, 2023 and the raw CTD data. Calibration data is available <a href="https://doi.org/10.5281/zenodo.8289670">https://doi.org/10.5281/zenodo.8289670</a></p>
Sailbuoy Echo PolarFront EK80 echosounder datasets 2023-08 to 2023-09
<p><strong>Sailbuoy Echo PolarFront EK80 echosounder data 2023-08 to 2023-09</strong></p><p>The Echo was deployed on 18 August 2023 at 29.45E, 77.76N. For further details on deployment, sampling, and piloting, see Buschmann (2023).</p><p>Time coverage: 2023-08-18-T09:11:46Z/2023-09-22T03:17:15Z</p><p><strong>Datasets</strong></p><ol><li>2023-08-18/2023-08-23: <a href="https://doi.org/10.5281/zenodo.10036821">https://doi.org/10.5281/zenodo.10036821</a></li><li>2023-08-24/2023-08-26: <a href="https://doi.org/10.5281/zenodo.10036823">https://doi.org/10.5281/zenodo.10036823</a></li><li>2023-08-27/2023-09-03: <a href="https://doi.org/10.5281/zenodo.10036825">https://doi.org/10.5281/zenodo.10036825</a></li><li>2023-09-04/2023-09-14: <a href="https://doi.org/10.5281/zenodo.10036827">https://doi.org/10.5281/zenodo.10036827</a></li><li>2023-09-15/2023-09-22: <a href="https://doi.org/10.5281/zenodo.10036829">https://doi.org/10.5281/zenodo.10036829</a></li></ol><p><strong>References</strong><br>Akvaplan-niva (2023-10-01). <strong>Sailbuoy Echo PolarFront sensor data.</strong><br>Buschmann H (2023). Glider data sampling for Polar Front mission summer 2023. In: Daase, M. (2023). PolarFront August 2023 Cruise Report (1.0.0). Zenodo. <a href="https://zenodo.org/doi/10.5281/zenodo.10013660">10.5281/zenodo.10013660</a>.<br> </p>
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