MAUPITI HOE - wave friction

Date 2022-12-05
Temporal extent 2018-07-05 -2018-07-18
Author(s) Sous DamienORCID1
Contributor(s) Quentin CélineORCID
Affiliation(s) 1 : Université de Toulon, Aix Marseille Univ, CNRS, IRD, MIO, Toulon, France
2 : Aix Marseille Univ, CNRS, IRD, IRSTEA, OSU PYTHEAS, Marseille, France
DOI 10.17882/91337
Publisher SEANOE
Note If you use these data in publications or presentation, please acknowledge MIO/OSU Pytheas and GLADYS. Also, we would appreciate receiving a preprint and/or reprint of publications utilizing the data for inclusion in our bibliography. Relevant publications should be sent to: Damien Sous, Laboratoire MIO UMR7294, Campus de La Garde, Université de Toulon, CS 60584 - 83041 TOULON CEDEX 9 , France
Keyword(s) Earth Science > Oceans, Earth Science > Oceans > Bathymetry/Seafloor Topography > Bathymetry > coastal bathymetry, Earth Science > Oceans > Coastal processes, Earth Science > Oceans > Coastal processes > Sea Surface Height, Earth Science > Oceans > Hydrography, Instruments > In Situ/Laboratory Instruments > Gauges > Water level gauges, Locations > Ocean > Pacific Ocean > South Pacific Ocean > French polynesia, morphodynamic, wave friction
Abstract

Maupiti ("the Stuck Twins'') is a diamond-shaped island located in the western part of the Society archipelago in French Polynesia. The present study focuses on the data recovered over a single cross-barrier transect located in the south-west barrier during the MAUPITI HOE field campaign, from 5 to 18 July 2018. The studied area is representative of the reef structure observed along the 4km-long southwestern barrier reef, showing an alongshore-uniform structure exposed to swell approaching with weak incident angles, a healthy reef colony. In the cross-barrier direction, the reef displays a clear partitioning of bottom roughness that ranges from low-crested compact structures at the reef crest to higher and sparser coral bommies on the backreef. The experimental setup was specifically designed to analyse and differentiate the dynamics over three roughness-contrasting sections found over the barrier reef.

Licence CC-BY-NC-SA
Utilisation The data may be used and redistributed for free but is not intended for legal use, since it may contain inaccuracies. Neither the data Contributor, MIO, OSU Pytheas, CNRS, nor the French Government, nor any of their employees or contractors, makes any warranty, express or implied, including warranties of merchantability and fitness for a particular purpose, or assumes any legal liability for the accuracy, completeness, or usefulness, of this information.
Acknowledgements The complete experimental campaign MAUPITI HOE has been funded and supported by the GLADYS nearshore research group
Sensor metadata

Four pressure sensors (OSS3, OSS4, OSS5, OSS6) have been deployed across the reef flat/ backreef, outside the surf zone. The bottom pressure is measured continuously at 10 Hz, and are converted into free surface elevation assuming hydrostaticity.

An electrocurrent meter S4 provides the wave forcing while AQP1 is a velocity profiler providing the transports.

The bed profile is obtained from the combination of (I) boat survey in the deeper part and (ii) high resolution GNSS RTK topography by feet.

S4 position : -16.47109°N; -152.2782°E
OSS3 position: -16.46968°N; -152.27698°E
OSS4 position : -16.46931°N;  -152.27676°E
OSS5 position : -16.46851°N;-152.27614°E
OSS6 position: -16.46706°N; -152.27504°E
AQP1 position: -16.46318°N ; -152.27348°E

Data
File Size Format Processing Access
Instantaneous Sea Levels from 4 water level gauges around Maupiti Island (french polynesia) 150 MB NC, NetCDF Processed data Open access
Bathymetric profile : Z bottom depth in meter along X axis in meter straight aline between 2 points (-16.471332°N, -152.278081°E and -16.463089°N, -152.272216°W) 77 KB TEXTE Processed data Open access
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