| Enregistrements |
| Auteur |
Bauer, R.K.; Forget, F.; Fromentin, J.-M. |
| Titre |
Optimizing PAT data transmission: assessing the accuracy of temperature summary data to estimate environmental conditions |
Type |
Article scientifique |
| Année |
2015 |
Publication |
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Revue Abrégée |
Fish Oceanogr. |
| Volume |
24 |
Numéro |
6 |
Pages |
533-539 |
| Mots-Clés |
behavior; mixed layer depth; ocean heat content; pacific-ocean; PAT-style Depth-Temperature Profiles; pop-up archival tags; temperature at depth; thermal stratification; thermocline; variability |
| Résumé |
Pop-up archival tags (PAT) provide summary and high-resolution time series data at predefined temporal intervals. The limited battery capabilities of PATs often restrict the transmission success and thus temporal coverage of both data products. While summary data are usually less affected by this problem, as a result of its lower size, it might be less informative. We here investigate the accuracy and feasibility of using temperature at depth summary data provided by PATs to describe encountered oceanographic conditions. Interpolated temperature at depth summary data was found to provide accurate estimates of three major thermal water column structure indicators: thermocline depth, stratification and ocean heat content. Such indicators are useful for the interpretation of the tagged animal's horizontal and vertical behaviour. The accuracy of these indicators was found to be particularly sensitive to the number of data points available in the first 100m, which in turn depends on the vertical behaviour of the tagged animal. Based on our results, we recommend the use of temperature at depth summary data as opposed to temperature time series data for PAT studies; doing so during the tag programming will help to maximize the amount of transmitted time series data for other key data types such as light levels and depth. |
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| Langue |
English |
Langue du Résumé |
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Titre Original |
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Titre de collection |
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Titre de collection Abrégé |
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Numéro de collection |
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Edition |
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| ISSN |
1054-6006 |
ISBN |
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Expédition |
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Conférence |
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| Notes |
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Approuvé |
pas de |
| Numéro d'Appel |
MARBEC @ alain.herve @ |
collection |
1484 |
| Lien permanent pour cet enregistrement |
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| Auteur |
Vianello, P.; Ternon, J.-F.; Demarcq, H.; Herbette, S.; Roberts, M.J. |
| Titre |
Ocean currents and gradients of surface layer properties in the vicinity of the Madagascar Ridge (including seamounts) in the South West Indian Ocean |
Type |
Article scientifique |
| Année |
2020 |
Publication |
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Revue Abrégée |
Deep-Sea Res. Part II-Top. Stud. Oceanogr. |
| Volume |
176 |
Numéro |
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Pages |
104816 |
| Mots-Clés |
agulhas current; biology; bloom; Chlorophyll-a; communities; dipoles; Eddy kinetic energy; fauna; Geostrophic currents; Madagascar Ridge; mesoscale eddies; Mixed layer depth; retroflection; Sea surface temperature; Seamounts; South West Indian Ocean; terms; variability; Walters shoal |
| Résumé |
This work is part of the MADRidge Project special issue which aims to describe pelagic ecosystems in the vicinity of three prominent shallow seamounts in the South West Indian Ocean: one here named MAD-Ridge (240 m below the surface) plus Walters Shoal (18 m) on the Madagascar Ridge, and La Perouse (60 m) on the abyssal plain east of Madagascar. The three span latitudes 20 degrees S and 33 degrees S, some 1500 km. The study provides the background oceanography for the once-off, multidisciplinary snapshot cruise studies around the seamounts. As life on seamounts is determined by factors such as summit depth, proximity to the light layers of the ocean, and the ambient circulation, a first description of regional spatial-field climatologies (16-22 years) and monthly along-ridge gradients of surface wind (driving force), water column properties of sea surface temperature, mixed layer depth, chlorophyll-a and eddy kinetic energy, plus ocean currents is provided. Being relevant to many applications in the study domain, these properties in particular reveal contrasting environments along the Madagascar Ridge and between the three seamounts that should drive biological differences. Relative to the other two seamounts, MAD-Ridge is in the more extreme situation, being at the end of the East Madagascar Current, where it experiences sturdy, albeit variable, currents and the frequent passing of mesoscale eddies. |
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| Auteur institutionnel |
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Thèse |
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Lieu de Publication |
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Éditeur |
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| Langue |
English |
Langue du Résumé |
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Titre Original |
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Titre de collection |
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Titre de collection Abrégé |
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Numéro de collection |
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Edition |
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| ISSN |
0967-0645 |
ISBN |
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Médium |
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Expédition |
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Conférence |
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| Notes |
WOS:000556810400013 |
Approuvé |
pas de |
| Numéro d'Appel |
MARBEC @ isabelle.vidal-ayouba @ |
collection |
2859 |
| Lien permanent pour cet enregistrement |
