Memorandum of Understanding available here : MOU_Tonga.pdf
Localisation
The transects and the thermometer are at -12 meters depth on the outer slope.
21°04.046'S/175°20.256'W (conversion DM/DMS)
The wave probe is at -38m.
To be added soon
Program
The Polynesia Mana since 2009
| The analysis of the coral cover is done using four methods: Photo-quadrat coral transect Coral survey by "manta tow" Underwater seascape photography Photogrammetry You can access to and to the photo quadrats | ||
| Year | Rugosity parallel | Rugosity perpendicular | Height SD parallel | Height SD perpendicular |
|---|---|---|---|---|
| 2019 | 1.7460 (sd 0.0929) | 1.7485(sd 0.1038) | 0.1808 | 0.1422 |
| 2022 | 1.4815 (sd 0.0803) | 1.4533(sd 0.0606) | 0.1564 | 0.1397 |
| 2024 | 1.4697 (sd 0.0702) | 1.4705(sd 0.0516) | 0.1731 | 0.1388 |
| The fish are estimated using ichtyological assessment. Here are the data | ||
| The measures of the waves are done using the the SBE 26 Seagauge wave and tide recorder. Here are the data | ||
| The temperature is recorded using the SBE 26 Seagauge wave and tide recorder (see the previous link to access the data) and also using the SBE 56 Thermometer. Here are the thermometer data | ||
Click here to access an interactive video to compare 2019 and 2022 (warning 400MB of video)
Historique Tonga
Données brutes de suivi des équipements. Les dates affichées correspondent à la date de modification du fichier informatique en laboratoire.
| Date | Departure | Arrival | Instrument |
|---|---|---|---|
| 2013-11-13 07:59:03 | CRIOBE > Tonga | CRIOBE > Moorea | SBE26 houlographe 1303 - perdue |
| 2013-11-13 08:03:55 | CRIOBE > Moorea | CRIOBE > Tonga | SBE26 houlographe 1280 |
| 2015-10-27 22:18:26 | CRIOBE > Moorea | CRIOBE > Tonga | SBE26 houlographe 1303 - perdue |
| 2015-11-11 02:32:02 | CRIOBE > Tonga | CRIOBE > Moorea | SBE26 houlographe 1280 |
| 2017-10-18 07:52:19 | CRIOBE > Tonga (14) | CRIOBE > Moorea > CRIOBE (33) | SBE26 houlographe 1303 - perdue |
| 2017-10-18 07:53:37 | CRIOBE > Moorea > CRIOBE (33) | CRIOBE > Tonga (14) | SBE26 houlographe 1303 - perdue |
| 2019-10-15 02:51:59 | CRIOBE > Moorea > CRIOBE (33) | CRIOBE > Tonga (14) | SBE56Temp 1633 - perdue |
| 2019-10-16 23:39:29 | CRIOBE > Moorea > CRIOBE (33) | CRIOBE > Tonga (14) | wave Gauge Blue 10-22-01 161062 ou 19-3-14 #003 - perdue |
| 2019-10-27 04:21:23 | CRIOBE > Tonga (14) | CRIOBE > Moorea > CRIOBE (33) | SBE26 houlographe 1303 - perdue |
| 2019-10-27 10:38:54 | CRIOBE > Moorea > CRIOBE (33) | CRIOBE > Tonga (14) | SBE26 houlographe 1303 - perdue |
| 2022-07-25 23:13:50 | CRIOBE > Moorea > CRIOBE (33) | CRIOBE > Tonga (14) | SBE56Temp 3434 |
| 2022-08-10 07:46:28 | CRIOBE > Moorea > CRIOBE (33) | CRIOBE > Tonga (14) | wave Gauge Blue 1108453 - 20-11-22-002 |
| 2024-03-23 02:35:43 | CRIOBE > Moorea > CRIOBE (33) | CRIOBE > Tonga (14) | wave Gauge Blue 19-10-23-003 |
Retrait du thermographe SBE56 n° et Hobo n°
Changement de houlographe SBE26 n° de série 1303 (reprogrammation sur place)
Commentaires: pas de commentaire particulier
Changement de thermographe SBE56
Changement de houlographe SBE26 n° de série 1303
Commentaires: pas de commentaire particulier
<more>
Changement de thermographe SBE56
Changement de houlographe SBE26 n° de série 1280
Commentaires: pas de commentaire particulier
<more>
Changement de thermographe SBE56
Changement de houlographe SBE26 n° de série 1303
Commentaires: pas de commentaire particulier
<more>
Octobre 2009 : Installation d'un thermographe SB56 et d'un houlographe SBE26 (n°1219
)
Mise en place des transects et des photos-quadrats