High sampling rate thermistor string observations at the slope of Great Meteor Seamount
A high sampling rate (1 Hz) thermistor string has been built to accommodate the scientific need to accurately monitor high-frequency and vigorous internal wave and overturning processes in the ocean. The thermistors and their custom designed electronics can register temperature at an estimated preci...
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ftcopernicus:oai:publications.copernicus.org:os6845 2023-05-15T17:33:01+02:00 High sampling rate thermistor string observations at the slope of Great Meteor Seamount Haren, H. Groenewegen, R. Laan, M. Koster, B. 2018-01-15 application/pdf https://doi.org/10.5194/os-1-17-2005 https://os.copernicus.org/articles/1/17/2005/ eng eng doi:10.5194/os-1-17-2005 https://os.copernicus.org/articles/1/17/2005/ eISSN: 1812-0792 Text 2018 ftcopernicus https://doi.org/10.5194/os-1-17-2005 2020-07-20T16:27:28Z A high sampling rate (1 Hz) thermistor string has been built to accommodate the scientific need to accurately monitor high-frequency and vigorous internal wave and overturning processes in the ocean. The thermistors and their custom designed electronics can register temperature at an estimated precision of about 0.001° C with a response time faster than 0.25 s down to depths of 6000 m. With a quick in situ calibration using SBE 911 CTD an absolute accuracy of 0.005° C is obtained. The present string holds 128 sensors at 0.5 m intervals, which are all read-out within 0.5 s. When sampling at 1 Hz, the batteries and the memory capacity of the recorder allow for deployments of up to 2 weeks. In this paper, the instrument is described in some detail. Its performance is illustrated with examples from the first moored observations, which show Kelvin-Helmholtz overturning and very high-frequency (Doppler-shifted) internal waves besides occasionally large turbulent bores moving up the sloping side of Great Meteor Seamount, Canary Basin, North-Atlantic Ocean. Text North Atlantic Copernicus Publications: E-Journals Meteor Seamount ENVELOPE(8.500,8.500,-48.000,-48.000) Ocean Science 1 1 17 28 |
institution |
Open Polar |
collection |
Copernicus Publications: E-Journals |
op_collection_id |
ftcopernicus |
language |
English |
description |
A high sampling rate (1 Hz) thermistor string has been built to accommodate the scientific need to accurately monitor high-frequency and vigorous internal wave and overturning processes in the ocean. The thermistors and their custom designed electronics can register temperature at an estimated precision of about 0.001° C with a response time faster than 0.25 s down to depths of 6000 m. With a quick in situ calibration using SBE 911 CTD an absolute accuracy of 0.005° C is obtained. The present string holds 128 sensors at 0.5 m intervals, which are all read-out within 0.5 s. When sampling at 1 Hz, the batteries and the memory capacity of the recorder allow for deployments of up to 2 weeks. In this paper, the instrument is described in some detail. Its performance is illustrated with examples from the first moored observations, which show Kelvin-Helmholtz overturning and very high-frequency (Doppler-shifted) internal waves besides occasionally large turbulent bores moving up the sloping side of Great Meteor Seamount, Canary Basin, North-Atlantic Ocean. |
format |
Text |
author |
Haren, H. Groenewegen, R. Laan, M. Koster, B. |
spellingShingle |
Haren, H. Groenewegen, R. Laan, M. Koster, B. High sampling rate thermistor string observations at the slope of Great Meteor Seamount |
author_facet |
Haren, H. Groenewegen, R. Laan, M. Koster, B. |
author_sort |
Haren, H. |
title |
High sampling rate thermistor string observations at the slope of Great Meteor Seamount |
title_short |
High sampling rate thermistor string observations at the slope of Great Meteor Seamount |
title_full |
High sampling rate thermistor string observations at the slope of Great Meteor Seamount |
title_fullStr |
High sampling rate thermistor string observations at the slope of Great Meteor Seamount |
title_full_unstemmed |
High sampling rate thermistor string observations at the slope of Great Meteor Seamount |
title_sort |
high sampling rate thermistor string observations at the slope of great meteor seamount |
publishDate |
2018 |
url |
https://doi.org/10.5194/os-1-17-2005 https://os.copernicus.org/articles/1/17/2005/ |
long_lat |
ENVELOPE(8.500,8.500,-48.000,-48.000) |
geographic |
Meteor Seamount |
geographic_facet |
Meteor Seamount |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
eISSN: 1812-0792 |
op_relation |
doi:10.5194/os-1-17-2005 https://os.copernicus.org/articles/1/17/2005/ |
op_doi |
https://doi.org/10.5194/os-1-17-2005 |
container_title |
Ocean Science |
container_volume |
1 |
container_issue |
1 |
container_start_page |
17 |
op_container_end_page |
28 |
_version_ |
1766131373717848064 |