A cost-efficient low-weight autonomous profiler for measurements in polar coastal waters and other regions with strong density gradients
The rapid warming of our planet has resulted in accelerated melting of ice in polar regions. Currently we have limited knowledge on how, where and when the surface meltwater layer is mixed with the underlying ocean due to lack of observations in these remote areas. We present a lightweight (17 kg) a...
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ftdoajarticles:oai:doaj.org/article:62ccf0488b03469da8b5e476d8eedfef 2023-05-15T14:58:46+02:00 A cost-efficient low-weight autonomous profiler for measurements in polar coastal waters and other regions with strong density gradients Lucas M. Sandby Jens E.B. Mejdahl Simon H. Bjerregaard Claus Melvad Søren Rysgaard 2021-10-01T00:00:00Z https://doi.org/10.1016/j.ohx.2021.e00207 https://doaj.org/article/62ccf0488b03469da8b5e476d8eedfef EN eng Elsevier http://www.sciencedirect.com/science/article/pii/S2468067221000365 https://doaj.org/toc/2468-0672 2468-0672 doi:10.1016/j.ohx.2021.e00207 https://doaj.org/article/62ccf0488b03469da8b5e476d8eedfef HardwareX, Vol 10, Iss , Pp e00207- (2021) Autonomous profiler Extended buoyancy engine Arctic meltwater Polar surface waters Stratified surface layer Low-weight float Science (General) Q1-390 article 2021 ftdoajarticles https://doi.org/10.1016/j.ohx.2021.e00207 2022-12-31T16:32:56Z The rapid warming of our planet has resulted in accelerated melting of ice in polar regions. Currently we have limited knowledge on how, where and when the surface meltwater layer is mixed with the underlying ocean due to lack of observations in these remote areas. We present a lightweight (17 kg) and low-cost (6000€) instrument for autonomous profiling across the strongly stratified upper layer in Arctic coastal waters, freshened by the riverine input and meltwater from glaciers, icebergs, and sea ice. The profiler uses a specially designed plunger buoyancy engine to displace up to 700 cm3 of water and allows for autonomous dives to 200 m depth. It can carry different sensor packages and convey its location by satellite communication. Two modes are available: (a) a free-floating mode and (b) a moored mode, where the instrument is anchored to the seafloor. In both modes, the profiler controls its velocity of 12 ± 0.3 cm/s resulting in 510 ± 22 data points per 100 m depth. Equipped with several sensors, e.g. conductivity, temperature, oxygen, and pressure, the autonomous profiler was successfully tested in a remote Northeast Greenlandic fjord. Data has been compared to traditional CTD instrument casts performed nearby. Article in Journal/Newspaper Arctic greenlandic Iceberg* Sea ice Directory of Open Access Journals: DOAJ Articles Arctic HardwareX 10 e00207 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Autonomous profiler Extended buoyancy engine Arctic meltwater Polar surface waters Stratified surface layer Low-weight float Science (General) Q1-390 |
spellingShingle |
Autonomous profiler Extended buoyancy engine Arctic meltwater Polar surface waters Stratified surface layer Low-weight float Science (General) Q1-390 Lucas M. Sandby Jens E.B. Mejdahl Simon H. Bjerregaard Claus Melvad Søren Rysgaard A cost-efficient low-weight autonomous profiler for measurements in polar coastal waters and other regions with strong density gradients |
topic_facet |
Autonomous profiler Extended buoyancy engine Arctic meltwater Polar surface waters Stratified surface layer Low-weight float Science (General) Q1-390 |
description |
The rapid warming of our planet has resulted in accelerated melting of ice in polar regions. Currently we have limited knowledge on how, where and when the surface meltwater layer is mixed with the underlying ocean due to lack of observations in these remote areas. We present a lightweight (17 kg) and low-cost (6000€) instrument for autonomous profiling across the strongly stratified upper layer in Arctic coastal waters, freshened by the riverine input and meltwater from glaciers, icebergs, and sea ice. The profiler uses a specially designed plunger buoyancy engine to displace up to 700 cm3 of water and allows for autonomous dives to 200 m depth. It can carry different sensor packages and convey its location by satellite communication. Two modes are available: (a) a free-floating mode and (b) a moored mode, where the instrument is anchored to the seafloor. In both modes, the profiler controls its velocity of 12 ± 0.3 cm/s resulting in 510 ± 22 data points per 100 m depth. Equipped with several sensors, e.g. conductivity, temperature, oxygen, and pressure, the autonomous profiler was successfully tested in a remote Northeast Greenlandic fjord. Data has been compared to traditional CTD instrument casts performed nearby. |
format |
Article in Journal/Newspaper |
author |
Lucas M. Sandby Jens E.B. Mejdahl Simon H. Bjerregaard Claus Melvad Søren Rysgaard |
author_facet |
Lucas M. Sandby Jens E.B. Mejdahl Simon H. Bjerregaard Claus Melvad Søren Rysgaard |
author_sort |
Lucas M. Sandby |
title |
A cost-efficient low-weight autonomous profiler for measurements in polar coastal waters and other regions with strong density gradients |
title_short |
A cost-efficient low-weight autonomous profiler for measurements in polar coastal waters and other regions with strong density gradients |
title_full |
A cost-efficient low-weight autonomous profiler for measurements in polar coastal waters and other regions with strong density gradients |
title_fullStr |
A cost-efficient low-weight autonomous profiler for measurements in polar coastal waters and other regions with strong density gradients |
title_full_unstemmed |
A cost-efficient low-weight autonomous profiler for measurements in polar coastal waters and other regions with strong density gradients |
title_sort |
cost-efficient low-weight autonomous profiler for measurements in polar coastal waters and other regions with strong density gradients |
publisher |
Elsevier |
publishDate |
2021 |
url |
https://doi.org/10.1016/j.ohx.2021.e00207 https://doaj.org/article/62ccf0488b03469da8b5e476d8eedfef |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic greenlandic Iceberg* Sea ice |
genre_facet |
Arctic greenlandic Iceberg* Sea ice |
op_source |
HardwareX, Vol 10, Iss , Pp e00207- (2021) |
op_relation |
http://www.sciencedirect.com/science/article/pii/S2468067221000365 https://doaj.org/toc/2468-0672 2468-0672 doi:10.1016/j.ohx.2021.e00207 https://doaj.org/article/62ccf0488b03469da8b5e476d8eedfef |
op_doi |
https://doi.org/10.1016/j.ohx.2021.e00207 |
container_title |
HardwareX |
container_volume |
10 |
container_start_page |
e00207 |
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1766330893402636288 |