Fate of terrestrial runoffs on the coastal zone of Noumea (New-Caledonia) : Moorings and CTD profiles

As the main city of New Caledonia, Nouméa, rapidly expends, the amount of anthropogenic compounds it releases to the nearby lagoon increases. These human-induced bulks are then transported through terrestrial runoffs and can stress sensitive ecosystems. Besides, the area faces recurring atmospheric extreme events, with more than one cyclone and two tropical depressions every year. The heavy downpours and devastating winds such events carry have the potential to alter the lagoon water mixing and bring human-induced matter up to usually undisturbed areas. Therefore, in order to understand the spatial extent and the propagation kinetics of runoff plumes produced by these events, observations (CTD profiles and pressure, temperature and conductivity moorings) have been conjointly conducted over the 2016-2017 tropical summer (from December to April). During this period the lagoon encountered two major events: Cook cyclone and a moderate tropical depression. 

Sampling strategy available on Sextant - Marine Geographic Information System.

More information on PRESENCE project.

 

As the main city of New Caledonia, Nouméa, rapidly expends, the amount of anthropogenic compounds it releases to the nearby lagoon increases. These human-induced bulks are then transported through terrestrial runoffs and can stress sensitive ecosystems. Besides, the area faces recurring atmospheric extreme events, with more than one cyclone and two tropical depressions every year. The heavy downpours and devastating winds such events carry have the potential to alter the lagoon water mixing and bring human-induced matter up to usually undisturbed areas. Therefore, in order to understand the spatial extent and the propagation kinetics of runoff plumes produced by these events, observations (CTD profiles and pressure, temperature and conductivity moorings) have been conjointly conducted over the 2016-2017 tropical summer (from December to April). During this period the lagoon encountered two major events: Cook cyclone and a moderate tropical depression. 

Sampling strategy available on Sextant - Marine Geographic Information System.

More information on PRESENCE project.

 

Disciplines

Physical oceanography

Keywords

New Caledonia, Noumea, Lagoon, Hydrodynamics, Circulation, Pressure, Currents, Temperature, Salinity, Waves, Coastal environment, Terrestrial runoffs, Water quality, PRESENCE Project

Location

-22.031744N, -22.618644S, 166.812186E, 166.036276W

Devices

Sensor Model Sampling Rate
Temperature / Conductivity JFE Advantech Infinity CTW 15 min
Temperature / Pressure RBR DUO - T.D 1 hour or 1 min
CTD Profiler SBE 19 plus 0.5 sec
Lagrangian surface ciruclation Pacific Gyre – Reef Drifter 10 min

 

Data

FileSizeFormatProcessingAccess
D01 : Temperature, level
3 MoNetCDFQuality controlled data
D01 : Temperature, level, waves
145 KoNetCDFQuality controlled data
D01 : Temperature, salinity
336 KoNetCDFQuality controlled data
B01 : Temperature, level
3 MoNetCDFQuality controlled data
B01 : Temperature, level, waves
145 KoNetCDFQuality controlled data
B01 : Temperature, Salinity
336 KoNetCDFQuality controlled data
CTD Profiles
5 MoNetCDFQuality controlled data
How to cite
Desclaux Terence, Soulard Benoit, Bruyère Oriane, Petton Sebastien, Royer Florence, Hubert Clarisse, Le Tesson Eric, Lemonnier Hugues, Schohn Thomas, Le Gendre Romain (2017). Fate of terrestrial runoffs on the coastal zone of Noumea (New-Caledonia) : Moorings and CTD profiles. Seanoe. https://doi.org/10.17882/53974

Copy this text