Lightweight drone-deployed autonomous ocean profiler for repeated measurements in hazardous areas – Example from glacier fronts in NE Greenland
Accelerated melting of ice in Polar Regions due to global warming increases freshwater input to coastal waters from marine terminating glaciers. Lack of measurements near the glacier terminus limits our knowledge of the mixing processes between freshwater and the underlying ocean. We present a low-c...
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ftpubmed:oai:pubmedcentral.nih.gov:9118920 2023-05-15T16:21:07+02:00 Lightweight drone-deployed autonomous ocean profiler for repeated measurements in hazardous areas – Example from glacier fronts in NE Greenland Poulsen, Ebbe Eggertsen, Mathias Jepsen, Erik H. Melvad, Claus Rysgaard, Søren 2022-05-04 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9118920/ https://doi.org/10.1016/j.ohx.2022.e00313 en eng Elsevier http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9118920/ http://dx.doi.org/10.1016/j.ohx.2022.e00313 © 2022 The Authors https://creativecommons.org/licenses/by/4.0/This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). CC-BY HardwareX Article Text 2022 ftpubmed https://doi.org/10.1016/j.ohx.2022.e00313 2022-05-22T01:00:50Z Accelerated melting of ice in Polar Regions due to global warming increases freshwater input to coastal waters from marine terminating glaciers. Lack of measurements near the glacier terminus limits our knowledge of the mixing processes between freshwater and the underlying ocean. We present a low-cost (< € 3200) and lightweight (2.6 kg) drone-deployed, retrievable conductivity, temperature and depth (CTD) instrument for remote controlled (1 km) autonomous profiling in highly hazardous and remote areas. The instrument was deployed with a drone taking off from land and marine vessels to perform measurements near tidewater glaciers termini of the Greenland ice sheet. The free-flowing profiler is reusable due to a compact ballast based single-shot buoyancy engine and post-profiling pickup by drone. It can reach a depth of up to 250 m, and is equipped with low-cost sensors for conductivity, temperature, and depth measurements. During decent the profiler reaches a velocity of about 0.48 m/s, resulting in about 3.5 data points pr. m depth, but is designed to easily vary the velocity by changing buoyancy setup before deployment. Successful tests were conducted at marine terminating glaciers in Northeast Greenland in August 2021. Text glacier Greenland Ice Sheet Tidewater PubMed Central (PMC) Greenland HardwareX 11 e00313 |
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Article Poulsen, Ebbe Eggertsen, Mathias Jepsen, Erik H. Melvad, Claus Rysgaard, Søren Lightweight drone-deployed autonomous ocean profiler for repeated measurements in hazardous areas – Example from glacier fronts in NE Greenland |
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Article |
description |
Accelerated melting of ice in Polar Regions due to global warming increases freshwater input to coastal waters from marine terminating glaciers. Lack of measurements near the glacier terminus limits our knowledge of the mixing processes between freshwater and the underlying ocean. We present a low-cost (< € 3200) and lightweight (2.6 kg) drone-deployed, retrievable conductivity, temperature and depth (CTD) instrument for remote controlled (1 km) autonomous profiling in highly hazardous and remote areas. The instrument was deployed with a drone taking off from land and marine vessels to perform measurements near tidewater glaciers termini of the Greenland ice sheet. The free-flowing profiler is reusable due to a compact ballast based single-shot buoyancy engine and post-profiling pickup by drone. It can reach a depth of up to 250 m, and is equipped with low-cost sensors for conductivity, temperature, and depth measurements. During decent the profiler reaches a velocity of about 0.48 m/s, resulting in about 3.5 data points pr. m depth, but is designed to easily vary the velocity by changing buoyancy setup before deployment. Successful tests were conducted at marine terminating glaciers in Northeast Greenland in August 2021. |
format |
Text |
author |
Poulsen, Ebbe Eggertsen, Mathias Jepsen, Erik H. Melvad, Claus Rysgaard, Søren |
author_facet |
Poulsen, Ebbe Eggertsen, Mathias Jepsen, Erik H. Melvad, Claus Rysgaard, Søren |
author_sort |
Poulsen, Ebbe |
title |
Lightweight drone-deployed autonomous ocean profiler for repeated measurements in hazardous areas – Example from glacier fronts in NE Greenland |
title_short |
Lightweight drone-deployed autonomous ocean profiler for repeated measurements in hazardous areas – Example from glacier fronts in NE Greenland |
title_full |
Lightweight drone-deployed autonomous ocean profiler for repeated measurements in hazardous areas – Example from glacier fronts in NE Greenland |
title_fullStr |
Lightweight drone-deployed autonomous ocean profiler for repeated measurements in hazardous areas – Example from glacier fronts in NE Greenland |
title_full_unstemmed |
Lightweight drone-deployed autonomous ocean profiler for repeated measurements in hazardous areas – Example from glacier fronts in NE Greenland |
title_sort |
lightweight drone-deployed autonomous ocean profiler for repeated measurements in hazardous areas – example from glacier fronts in ne greenland |
publisher |
Elsevier |
publishDate |
2022 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9118920/ https://doi.org/10.1016/j.ohx.2022.e00313 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
glacier Greenland Ice Sheet Tidewater |
genre_facet |
glacier Greenland Ice Sheet Tidewater |
op_source |
HardwareX |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9118920/ http://dx.doi.org/10.1016/j.ohx.2022.e00313 |
op_rights |
© 2022 The Authors https://creativecommons.org/licenses/by/4.0/This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1016/j.ohx.2022.e00313 |
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