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...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2005-01-01
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| Series: | Ocean Science |
| Online Access: | http://www.ocean-sci.net/1/17/2005/os-1-17-2005.pdf |
| _version_ | 1818279183379333120 |
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| author | H. van Haren R. Groenewegen M. Laan B. Koster |
| author_facet | H. van Haren R. Groenewegen M. Laan B. Koster |
| author_sort | H. van Haren |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-12-12T23:29:17Z |
| format | Article |
| id | doaj.art-8692c95f633a44538e1167d30cd0c0d9 |
| institution | Directory Open Access Journal |
| issn | 1812-0784 1812-0792 |
| language | English |
| last_indexed | 2024-12-12T23:29:17Z |
| publishDate | 2005-01-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Ocean Science |
| spelling | doaj.art-8692c95f633a44538e1167d30cd0c0d92022-12-22T00:07:53ZengCopernicus PublicationsOcean Science1812-07841812-07922005-01-01111728High sampling rate thermistor string observations at the slope of Great Meteor SeamountH. van HarenR. GroenewegenM. LaanB. KosterA 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.http://www.ocean-sci.net/1/17/2005/os-1-17-2005.pdf |
| spellingShingle | H. van Haren R. Groenewegen M. Laan B. Koster High sampling rate thermistor string observations at the slope of Great Meteor Seamount Ocean Science |
| title | 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_short | 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 |
| url | http://www.ocean-sci.net/1/17/2005/os-1-17-2005.pdf |
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